how to get 270hp out of an S5 n/a?
08-05-03, 09:03 PM
#51
Lives on the Forum
Don't you just love the benchracing... 
270hp at the crank minus 15% for friction loss is about 230hp to the wheels.
On a streetport, we're talking about the upper 1% of motors that have been built for such purposes.  The porting is actually your restriction.
To overcome the port restriction, just crank the revs up.  Horsepower is just a function of torque multiplied by RPM (and some constant), therefore, we can conclude that if you can keep the motor together in one piece, it will eventually hit your target horsepower number.
Now, to build such a high reving motor, we're talking about seriously balanced engine components, absurdly high (for street) oil pressures, deep-grooved/special bearings, and special seals.  All points to spending a lot of money.
I'd estimate you could hit your number if we can get the motor to rev up to say, 14kRPM?  Now, the engine will be making very little usable power up that high with a streetport, but this was a mental exercise, right?
-Ted
270hp at the crank minus 15% for friction loss is about 230hp to the wheels.
On a streetport, we're talking about the upper 1% of motors that have been built for such purposes.  The porting is actually your restriction.
To overcome the port restriction, just crank the revs up.  Horsepower is just a function of torque multiplied by RPM (and some constant), therefore, we can conclude that if you can keep the motor together in one piece, it will eventually hit your target horsepower number.
Now, to build such a high reving motor, we're talking about seriously balanced engine components, absurdly high (for street) oil pressures, deep-grooved/special bearings, and special seals.  All points to spending a lot of money.
I'd estimate you could hit your number if we can get the motor to rev up to say, 14kRPM?  Now, the engine will be making very little usable power up that high with a streetport, but this was a mental exercise, right?
-Ted
08-05-03, 09:40 PM
#52
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Unless you change your mind about the porting you're only option is higher compression rotors. Look at a rotor, see that cavity on each face? Fill that in completely, so that it's smooth with the rest of the face.
2. Do you know what the compression would be?
Sounds like alot of BS to me.
Why are you asking this question anyway? How to get 270hp out of an N/a with no turbo,NOS, and limited to streetport? How is this realistic.
Realistic- Adding performance parts to your n/a to make it semi-fast without dropping tons of $$$ into it. Personally I bought my n/a for $900, a few grand in mods and I would say that my car is more of a performance car as a averagely priced TII, and its in good shape.
Non-realistic- Spending tons of money to get 270 hp out of an n/a, when you could spend half as much and have 400 hp with a turbo.
my .03 cents.
08-06-03, 02:22 AM
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Re: That is my goal as well
Originally posted by tweaked
the S5 made like 185 HP I think. a 20% increase gets you over 215 HP These guys saying you can't get over 200 are insane. 15 HP is nothing.
the S5 made like 185 HP I think. a 20% increase gets you over 215 HP These guys saying you can't get over 200 are insane. 15 HP is nothing.
08-06-03, 03:28 AM
#56
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Go with the renesis motor for sure...that motor is a nice step up from the fd's motor...problem is no turbo option, just isnt the same w/o...ok, you say you have headers right? have you tried port matching and polishing the exhaust ports...thatll give you some more hp. Remove the power steering pump. bigger radiator, lower temp thermostat. ignition system...bigger fuel pump and injectors controlled by an apex safc (and dyno tune it). thats alli can think of for now
08-06-03, 03:50 AM
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ReTED said: '270hp at the crank minus 15% for friction loss is about 230hp to the wheels.'
If you use a fixed %age for friction loss going from flywheel to rear wheel you really do not know much about frictional losses. Rear wheel HP is a dreadful metric, especially given the calibration state of most dynos.
For example: how do you dyno a 300HP car on a 230 HP dyno? Easy. strap it down hard and get 3 people to sit on the back. This will increase losses to the point where you measure less than 230HP and then use a coast down to take out those losses
You talk bench racing. why don't you call mazdatrix and ask them what HP they are getting at 10K. The engine is built and dyno'd and raced, so therefore real in my book
If you use a fixed %age for friction loss going from flywheel to rear wheel you really do not know much about frictional losses. Rear wheel HP is a dreadful metric, especially given the calibration state of most dynos.
For example: how do you dyno a 300HP car on a 230 HP dyno? Easy. strap it down hard and get 3 people to sit on the back. This will increase losses to the point where you measure less than 230HP and then use a coast down to take out those losses
You talk bench racing. why don't you call mazdatrix and ask them what HP they are getting at 10K. The engine is built and dyno'd and raced, so therefore real in my book
08-06-03, 08:53 AM
#58
trying to build a racecar
Originally posted by BDoty311
1. What do you plan on filling it with?? You think it will hold up with that much compression, heat, and 2-3K rpms?
1. What do you plan on filling it with?? You think it will hold up with that much compression, heat, and 2-3K rpms?
2. Do you know what the compression would be?
Has the thread starter run around the block, breathing through a straw, like I suggested?
08-06-03, 09:08 AM
#59
OBEY YOUR MAZDA
I found this motor on a swedish website, 290 HP with MFR PP Rotothousings, race rotors and dry-sump.
I seriously doubt that 270 hp is acheivable on streetports.
If you are better in swedish than I then please translate
http://w1.314.telia.com/~u31430971/
I seriously doubt that 270 hp is acheivable on streetports.
If you are better in swedish than I then please translate
http://w1.314.telia.com/~u31430971/
08-06-03, 11:31 AM
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Devcon is what people use when going to a peripheral port and have to fill in the side ports. They makes a variety of products that could work, high temp ceramic/carbide epoxies. Or you could weld them up and machine them smooth. I've never done this, just throwing out possibilities.
08-06-03, 12:13 PM
#61
trying to build a racecar
Sure, why not? Obviously money is no object in this impossible motor, as long as you don't violate the street port doctrine. So lets just save ourselves some trouble (HA!) and have new rotors built to our specs.
Custom CNC chromoly rotors with maybe a ceramic coating... they can't be *that* expensive.
Custom CNC chromoly rotors with maybe a ceramic coating... they can't be *that* expensive.
08-06-03, 01:35 PM
#62
I wonder if the original poster has gotten the point that 270whp is not going to happen with an N/a 13B?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?
08-06-03, 04:47 PM
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Daaaaaannnnnnggggggg!!!!
we got some really touchy people here and some hotheads and ignant (ignorant0) people and some people that are insightful problemsolvers and people that don't read the "context" of any of my posts before they start seemingly bashing some of "my" not "your" goals on this project. if it can't be done.....f-i-n-e, but if you read my original post, trying to get as close to that hp # w/ again "my" not "your" parameters is my goal. Please read peoples.
1987 rx7 guy-
oh man, where do I begin, let's start w/ your post
"I wonder if the original poster has gotten the point that 270whp is not going to happen with an N/a 13B?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?"
my reply, even if the questions are not worth answering...
1) no, haven't got the point, just some opinions and some others experiences, and facts. And if you really read your question someone just posted 290hp
pp from an n/a. If you read my original post, trying to get as close as i can b-u-d-d-i-e. Read please, some of your questions and comments might have been answered, addressed. Idiotic restrictions? Whew that's a pretty strongword for a guy who just asking for an answer to his question, not a comment for my question. To you maybe. It's my project umember, just asking for some help w/ a project w/ some parameters. ( we all got different things we wanna do with our rotary projects, these just happen to be mine, i don't think there idiotic.
2) Ah, duh, yeah moe, larry...maybe we could use stickers to add hp like 1987rx7guy said, could be good for 100 extra hp. Didn't really think of that, actually i wouldn't, some things are givens that wouldn't work, but i guess for some that idea or question might come up.
3) BIG RX7 sticker across the hood, nah i was tinkin' somethin' like Honda DOHC. for those that don't know, I'm not serious.
suggestions, brah, don't get all hot, mang, and clowning,don't hate for me just asking a question and for some help. thanks. got any other "real" ideas? if not that's cool, thanx.
for bdoty311- your below post reads
"Why are you asking this question anyway? How to get 270hp out of an N/a with no turbo,NOS, and limited to streetport? How is this realistic.
Realistic- Adding performance parts to your n/a to make it semi-fast without dropping tons of $$$ into it. Personally I bought my n/a for $900, a few grand in mods and I would say that my car is more of a performance car as a averagely priced TII, and its in good shape.
Non-realistic- Spending tons of money to get 270 hp out of an n/a, when you could spend half as much and have 400 hp with a turbo.
my .03 cents."
1) responding to your $0.03 cents comment first, that's about what it's worth, nah seriously though, guys read my first post. Let me respond to some of your questions, basically, why am I asking the question, uh, it's a project I'm undertaking and was asking for some help. my parameters might not be completely realistic, but close. read my 1st post again...as close as I can get...as far as your nonrealistic comment, no i don't plan on spending gobs of dinero and I don't want a 400 boosted beast, already got my TII for that, just wanted an aggressive n/a rx7 roadster. I realize some may disagree w/ my parameters for the result i want, but that's what I'M setting out to do and plan and see how much $$$ it's gonna be and get as close to the goal I want and decide to move forward or not @ that point.
By the way, love your rx's setup, have you ever dynoed it, got #'s? curious.
suggestions on future posts:
(ALL PLEASE READ BEFORE ANYMORE POSTS, THANX)
many have already chimed in w/ basically "no it can't be done w/ those parameters," and that's fine, thanx for that input and reasons why. But, if there is anyone else (besides the previous remarks, only need to hear it once or twice, not 10x w/ people just repeating what others had previously stated) out there in the rotary family(community) please post w/ some ideas I may have not thought about, but within my parameters!
i.e. renesis rotors and higher comp. rotors were great ones. I need this post to be a little more constructive, think of it as a brainstorming session, you know you got such and such to work with, you know what the goal is, what are some things we could think of to get there ( within parameters).
here are somethings that i came up so far w/ to get as close as I can:
start with a 1990 n/a S5 = 160fwhp/ 140 tq.
add a little pineapple 6port sleeves,
w/ a smiggen of apex cone air filter,
a bored out throttle body,
extrude honed intake manifold,
TII intermediate housings,
streetported (portmatched to intake manifold) motor,
maybe after extrudehone the intake and exhaust ports,
underdrive pullies,
electric fan,
header into 2 1/2" exhaust,
complete w/ your very own standalone computer (wolf, haltech, microtech, etc. engine/fuel management)
(seriously) anything else to put in/ add to the mix to get to as close 270fwhp we can get????????
A) anyone know of anyone w/ a similar setup who's got dyno #'s?
B) what is the highest hp rating you have seen w/ a similar setup? and can you post it?
SORRY FOR BEING SO WORDY, BUT I FELT CERTAIN THINGS NEEDED TO BE ADDRESSED AND HAD TO BREAK IT DOWN FOR SOME PEOPLE. FOR ALL OF YOUR POSTS AND FUTURE ONES THANKS. IT'S REALLY APPARENT THAT WE GOT SOME ENGINEERS, VETERANS, AND ENTHUSIASTS OUT THERE. THIS IS REALLY HELPING A ROTORHEAD OF 15 YEARS WITH THIS PROJECT. POST AWAY........
(whew)
rotarypwrd
1977 REPU mazdagreen
1984 GSLSE black
1989 TII black
1990 GTU black
looking for 94-95 R2 black
we got some really touchy people here and some hotheads and ignant (ignorant0) people and some people that are insightful problemsolvers and people that don't read the "context" of any of my posts before they start seemingly bashing some of "my" not "your" goals on this project. if it can't be done.....f-i-n-e, but if you read my original post, trying to get as close to that hp # w/ again "my" not "your" parameters is my goal. Please read peoples.
1987 rx7 guy-
oh man, where do I begin, let's start w/ your post
"I wonder if the original poster has gotten the point that 270whp is not going to happen with an N/a 13B?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?"
my reply, even if the questions are not worth answering...
1) no, haven't got the point, just some opinions and some others experiences, and facts. And if you really read your question someone just posted 290hp
pp from an n/a. If you read my original post, trying to get as close as i can b-u-d-d-i-e. Read please, some of your questions and comments might have been answered, addressed. Idiotic restrictions? Whew that's a pretty strongword for a guy who just asking for an answer to his question, not a comment for my question. To you maybe. It's my project umember, just asking for some help w/ a project w/ some parameters. ( we all got different things we wanna do with our rotary projects, these just happen to be mine, i don't think there idiotic.
2) Ah, duh, yeah moe, larry...maybe we could use stickers to add hp like 1987rx7guy said, could be good for 100 extra hp. Didn't really think of that, actually i wouldn't, some things are givens that wouldn't work, but i guess for some that idea or question might come up.
3) BIG RX7 sticker across the hood, nah i was tinkin' somethin' like Honda DOHC. for those that don't know, I'm not serious.
suggestions, brah, don't get all hot, mang, and clowning,don't hate for me just asking a question and for some help. thanks. got any other "real" ideas? if not that's cool, thanx.
for bdoty311- your below post reads
"Why are you asking this question anyway? How to get 270hp out of an N/a with no turbo,NOS, and limited to streetport? How is this realistic.
Realistic- Adding performance parts to your n/a to make it semi-fast without dropping tons of $$$ into it. Personally I bought my n/a for $900, a few grand in mods and I would say that my car is more of a performance car as a averagely priced TII, and its in good shape.
Non-realistic- Spending tons of money to get 270 hp out of an n/a, when you could spend half as much and have 400 hp with a turbo.
my .03 cents."
1) responding to your $0.03 cents comment first, that's about what it's worth, nah seriously though, guys read my first post. Let me respond to some of your questions, basically, why am I asking the question, uh, it's a project I'm undertaking and was asking for some help. my parameters might not be completely realistic, but close. read my 1st post again...as close as I can get...as far as your nonrealistic comment, no i don't plan on spending gobs of dinero and I don't want a 400 boosted beast, already got my TII for that, just wanted an aggressive n/a rx7 roadster. I realize some may disagree w/ my parameters for the result i want, but that's what I'M setting out to do and plan and see how much $$$ it's gonna be and get as close to the goal I want and decide to move forward or not @ that point.
By the way, love your rx's setup, have you ever dynoed it, got #'s? curious.
suggestions on future posts:
(ALL PLEASE READ BEFORE ANYMORE POSTS, THANX)
many have already chimed in w/ basically "no it can't be done w/ those parameters," and that's fine, thanx for that input and reasons why. But, if there is anyone else (besides the previous remarks, only need to hear it once or twice, not 10x w/ people just repeating what others had previously stated) out there in the rotary family(community) please post w/ some ideas I may have not thought about, but within my parameters!
i.e. renesis rotors and higher comp. rotors were great ones. I need this post to be a little more constructive, think of it as a brainstorming session, you know you got such and such to work with, you know what the goal is, what are some things we could think of to get there ( within parameters).
here are somethings that i came up so far w/ to get as close as I can:
start with a 1990 n/a S5 = 160fwhp/ 140 tq.
add a little pineapple 6port sleeves,
w/ a smiggen of apex cone air filter,
a bored out throttle body,
extrude honed intake manifold,
TII intermediate housings,
streetported (portmatched to intake manifold) motor,
maybe after extrudehone the intake and exhaust ports,
underdrive pullies,
electric fan,
header into 2 1/2" exhaust,
complete w/ your very own standalone computer (wolf, haltech, microtech, etc. engine/fuel management)
(seriously) anything else to put in/ add to the mix to get to as close 270fwhp we can get????????
A) anyone know of anyone w/ a similar setup who's got dyno #'s?
B) what is the highest hp rating you have seen w/ a similar setup? and can you post it?
SORRY FOR BEING SO WORDY, BUT I FELT CERTAIN THINGS NEEDED TO BE ADDRESSED AND HAD TO BREAK IT DOWN FOR SOME PEOPLE. FOR ALL OF YOUR POSTS AND FUTURE ONES THANKS. IT'S REALLY APPARENT THAT WE GOT SOME ENGINEERS, VETERANS, AND ENTHUSIASTS OUT THERE. THIS IS REALLY HELPING A ROTORHEAD OF 15 YEARS WITH THIS PROJECT. POST AWAY........
(whew)
rotarypwrd
1977 REPU mazdagreen
1984 GSLSE black
1989 TII black
1990 GTU black
looking for 94-95 R2 black
08-06-03, 10:34 PM
#67
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1) responding to your $0.03 cents comment first, that's about what it's worth, nah seriously though, guys read my first post. Let me respond to some of your questions, basically, why am I asking the question, uh, it's a project I'm undertaking and was asking for some help. my parameters might not be completely realistic, but close. read my 1st post again...as close as I can get...as far as your nonrealistic comment, no i don't plan on spending gobs of dinero and I don't want a 400 boosted beast, already got my TII for that, just wanted an aggressive n/a rx7 roadster. I realize some may disagree w/ my parameters for the result i want, but that's what I'M setting out to do and plan and see how much $$$ it's gonna be and get as close to the goal I want and decide to move forward or not @ that point.
Thanks for the compliments and no I havent dyno'd it yet. Plan on doing that when I get all of my power mods done and after I get my S-AFC.
08-07-03, 01:24 AM
#68
Originally posted by rotarypwrd
1987 rx7 guy-
oh man, where do I begin, let's start w/ your post
"I wonder if the original poster has gotten the point that 270whp is not going to happen with an N/a 13B?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?"
my reply, even if the questions are not worth answering...
1) no, haven't got the point, just some opinions and some others experiences, and facts. And if you really read your question someone just posted 290hp
pp from an n/a. If you read my original post, trying to get as close as i can b-u-d-d-i-e. Read please, some of your questions and comments might have been answered, addressed. Idiotic restrictions? Whew that's a pretty strongword for a guy who just asking for an answer to his question, not a comment for my question. To you maybe. It's my project umember, just asking for some help w/ a project w/ some parameters. ( we all got different things we wanna do with our rotary projects, these just happen to be mine, i don't think there idiotic.
2) Ah, duh, yeah moe, larry...maybe we could use stickers to add hp like 1987rx7guy said, could be good for 100 extra hp. Didn't really think of that, actually i wouldn't, some things are givens that wouldn't work, but i guess for some that idea or question might come up.
3) BIG RX7 sticker across the hood, nah i was tinkin' somethin' like Honda DOHC. for those that don't know, I'm not serious.
1987 rx7 guy-
oh man, where do I begin, let's start w/ your post
"I wonder if the original poster has gotten the point that 270whp is not going to happen with an N/a 13B?
Especially with his idiotic restrictions.
Maybe he is thinking about using stickers to add HP?
Like a BIG RX-7 accross the hood of his car?"
my reply, even if the questions are not worth answering...
1) no, haven't got the point, just some opinions and some others experiences, and facts. And if you really read your question someone just posted 290hp
pp from an n/a. If you read my original post, trying to get as close as i can b-u-d-d-i-e. Read please, some of your questions and comments might have been answered, addressed. Idiotic restrictions? Whew that's a pretty strongword for a guy who just asking for an answer to his question, not a comment for my question. To you maybe. It's my project umember, just asking for some help w/ a project w/ some parameters. ( we all got different things we wanna do with our rotary projects, these just happen to be mine, i don't think there idiotic.
2) Ah, duh, yeah moe, larry...maybe we could use stickers to add hp like 1987rx7guy said, could be good for 100 extra hp. Didn't really think of that, actually i wouldn't, some things are givens that wouldn't work, but i guess for some that idea or question might come up.
3) BIG RX7 sticker across the hood, nah i was tinkin' somethin' like Honda DOHC. for those that don't know, I'm not serious.
I should have been more specific. "With your parameters it will be 1000% impossible to get 270whp without some new company comming out with some great internal parts."
If you can get 270rwhp from an engine with your perameters you can have my car and i will pay your gas for the next 5 years.
Even the Renesis is dynoing at 180whp! that is still 90hp short of your goal.
And 290whp is doubtfull from even a peripheral port. The one engine I qouted was 270 BHP BHP BHP not NOT whp WHP.
BTW- Cand I borrow or rather have about 2 or 4k dollars? Cuz it seems you are going to throw it away on your dillussional goal. A beefy n/a is possible but your asking for too much from a 13B.
There have been many people that came before us don't you think if it was possible they would have achieved it by now? I personally haven't even seen a 200whp dyno sheet from any SP 13B on this forum.
I would be very happy to see your goal met but it is NOT going to happen without some miracle new product hitting the market and you using it.
Santiago
PS- Repetition is the best way to remember something and is the goal of the people that keep saying it is IMPOSSIBLE. You need to listen and learn.
08-07-03, 03:41 AM
#69
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270rwhp... NO
270hp... well maybe... depends on how tuned the motor is...
the guy at SDJ motor sports got a streetport to hit 265 (flywheel) hp on a carbed motor... i'm sure with the right intake setup and a tuned stand alone it would be possible.....
270hp... well maybe... depends on how tuned the motor is...
the guy at SDJ motor sports got a streetport to hit 265 (flywheel) hp on a carbed motor... i'm sure with the right intake setup and a tuned stand alone it would be possible.....
08-07-03, 03:53 AM
#70
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1987 rx7 guy-
thanx for your reply, and clearing things up, but please read my posts in their entireity. You would not be stating some things you have stated if you would read.
1) stated earlier, basically, if you got nuthin' good to say, don't say it at all. I got the whole it just can't be done shpeel the 1st time, please only post ideas, configurations, etc. or just don't post anything further to leave some room for some more critical thinkers, engineers, more experienced rotorheads, and innovators to post their stuff, thanx.
2) as far as the whole 270rwhp figure, you stated that not me. Again, if you read my 1st post and the subject for this thread "270hp" is what I stated as a goal.
(270)hp is a figure that most auto manufacturers and automagazines use to state flywheel (crank) hp, not whp or rwhp. So, to break it down I'm trying to get 270hp or it's equivalent about 235ish whp. With that said, the understanding of my goal of 270hp, if it's achieved within my parameters are you seriously willing to wager handing your car over to me for me to own and free gas(unleaded fuel) paid by you for the next 5 years? Hint, be careful what you wager. Kinda like becareful what you wish for. Let me know.
FOR EVERYONE...........
Was doing an engine install tonight with some friends and am really thinking through the renesis rotors suggestion and how to make it work, how much more power it would generate w/o the rx8 exhaust ports. Also working through the idea of basically having an rx8 (renesis) motor (block), but swapping out the aluminum rotor housings w/ FD rotor housings (still having the old 2 exhaust ports). You'd now have 5 (technically 6) instead of 3 (technically 4) exhaust ports. What would that do to the motor? How would it change it's character of how it operates? What successes would there be w/ that configuration? What failures or setbacks or problems could there be w/ such a cofiguration (i.e. port timing, apex/corner seals falling out)? I know there would have to be a custom exhaust manifold (header) made, but what do all of my extended rotary family think of all that? Let me here your thoughts on this and any other ideas besides the ones I just mentioned. (remember constructive)
Also, what is the highest whp #'s anyone has seen or knows of for an n/a w/ my parameters get? Also, if you can, post.
thanx in advance, rotarypwrd
thanx for your reply, and clearing things up, but please read my posts in their entireity. You would not be stating some things you have stated if you would read.
1) stated earlier, basically, if you got nuthin' good to say, don't say it at all. I got the whole it just can't be done shpeel the 1st time, please only post ideas, configurations, etc. or just don't post anything further to leave some room for some more critical thinkers, engineers, more experienced rotorheads, and innovators to post their stuff, thanx.
2) as far as the whole 270rwhp figure, you stated that not me. Again, if you read my 1st post and the subject for this thread "270hp" is what I stated as a goal.
(270)hp is a figure that most auto manufacturers and automagazines use to state flywheel (crank) hp, not whp or rwhp. So, to break it down I'm trying to get 270hp or it's equivalent about 235ish whp. With that said, the understanding of my goal of 270hp, if it's achieved within my parameters are you seriously willing to wager handing your car over to me for me to own and free gas(unleaded fuel) paid by you for the next 5 years? Hint, be careful what you wager. Kinda like becareful what you wish for. Let me know.
FOR EVERYONE...........
Was doing an engine install tonight with some friends and am really thinking through the renesis rotors suggestion and how to make it work, how much more power it would generate w/o the rx8 exhaust ports. Also working through the idea of basically having an rx8 (renesis) motor (block), but swapping out the aluminum rotor housings w/ FD rotor housings (still having the old 2 exhaust ports). You'd now have 5 (technically 6) instead of 3 (technically 4) exhaust ports. What would that do to the motor? How would it change it's character of how it operates? What successes would there be w/ that configuration? What failures or setbacks or problems could there be w/ such a cofiguration (i.e. port timing, apex/corner seals falling out)? I know there would have to be a custom exhaust manifold (header) made, but what do all of my extended rotary family think of all that? Let me here your thoughts on this and any other ideas besides the ones I just mentioned. (remember constructive)
Also, what is the highest whp #'s anyone has seen or knows of for an n/a w/ my parameters get? Also, if you can, post.
thanx in advance, rotarypwrd
08-07-03, 04:06 AM
#73
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Rx7boi-
Thanx so much for that valuable info. Finally some "real #'s" that are sooo close to my goal. Can you or he post the dyno sheet? I'd really like to talk w/ this guy @ sdj motorsports on how he did it. Where are they located? Does he work @ the shop? Let me know. And thanx again that news is really encouraging and ahem, not so unrealistic as some people may have thought. Hope certain peeps are listening. I know, know, not until I see the proof of those #'s, hear-say only until we see it on paper, no seat of the pants measurement counts, I know.
inspired, hopeful,
rotarypwrd
Thanx so much for that valuable info. Finally some "real #'s" that are sooo close to my goal. Can you or he post the dyno sheet? I'd really like to talk w/ this guy @ sdj motorsports on how he did it. Where are they located? Does he work @ the shop? Let me know. And thanx again that news is really encouraging and ahem, not so unrealistic as some people may have thought. Hope certain peeps are listening. I know, know, not until I see the proof of those #'s, hear-say only until we see it on paper, no seat of the pants measurement counts, I know.
inspired, hopeful,
rotarypwrd
Last edited by rotarypwrd; 08-07-03 at 04:09 AM.
08-07-03, 04:13 PM
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The stock intake, whatever you do will top out around 200HP area. IDA will get you in the 230 mark. After that you are getting into interesting territory. Port actuators will have to go, inlet length will become critical as will balance clearance and sealing. Things like ceramic seals will get you another 10lbft (source pineapple racing) and more RPM, but then you need to lighten things or go to a 2 piece eccentric.
Oh yes get T2 rotor housings, better flowing exhaust and easier than grinding out the splitters.
Certainly a fun area to explore, especially as so few people have ever tried to push the 6-port.
Oh yes get T2 rotor housings, better flowing exhaust and easier than grinding out the splitters.
Certainly a fun area to explore, especially as so few people have ever tried to push the 6-port.