Ls1 FD or Rotary FD?

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Old 01-28-08 | 04:55 PM
  #351  
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hope it happens.
Old 01-28-08 | 05:01 PM
  #352  
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Originally Posted by turbotommy
Im still waiting for a money race on the street with an untubbed v8 car. guess ill just continue to beat all the v8s around this area. One day ill race one of these insanley fast v8 rx7s on the street and take their money too. Until then, ill continue to laugh at these pathedic ls1 rx7 videos... even a honda motor makes more horsepower per cubic inch then an ls1, and so does a rotary, and a 2jz. a 350 is the biggest pos v8 motor out there. i guess thats y its so cheap.
Do you realize how much of a ricer this makes you sound?

it's not a "motor" it's called an engine, motors are run by electricity

and an LS1 isn't a 350, it's 347ci.

you fail at life
Old 01-28-08 | 05:06 PM
  #353  
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Originally Posted by phoenix7
dude, don't even start this again. I've been hunting for answers to this for YEARS without any decent data from the V8 guys other than :"it's great, it works, handles just as weel, if not better, you're stupid for asking."
Sorry, You, me, Sabre02, and IceMark went round and round about this a few months ago. EVERY question you and Mark asked, we answered with hard data, except for where the center of gravity of the LS1 powertrain lies. Which probably wouldn't matter because you can't supply hard data as to where the center of gravity of the 13brew powertrain lies.

Then, Mark "pruned" the thread because it didn't have anything to do with the OP's question. There were no inflamitory remarks or personal attacks, but he took out all of our info. You remember the thread.
Old 01-28-08 | 05:08 PM
  #354  
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well, when the paragraph starts with "Im still waiting for a money race on the street with an untubbed v8 car" you know to stop reading and move on.
Old 01-28-08 | 05:11 PM
  #355  
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Originally Posted by aussiesmg
Listen to the Lingenfelder di...amn
For the love of all that is good and holy, it's spelled L-I-N-G-E-N-F-E-L-T-E-R! I didn't even have to google it. Everyone save it to your FireFox spell checker so this doesn't keep happening. I don't want to see anymore Langanfilters, Lingenfelder, or Leygunphaldurz. Okay?
Old 01-28-08 | 05:15 PM
  #356  
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Fifengelder?
Old 01-28-08 | 05:16 PM
  #357  
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Originally Posted by Eat-Pez
Sorry, You, me, Sabre02, and IceMark went round and round about this a few months ago. EVERY question you and Mark asked, we answered with hard data, except for where the center of gravity of the LS1 powertrain lies. Which probably wouldn't matter because you can't supply hard data as to where the center of gravity of the 13brew powertrain lies.

Then, Mark "pruned" the thread because it didn't have anything to do with the OP's question. There were no inflamitory remarks or personal attacks, but he took out all of our info. You remember the thread.
yeah, except for the fact that I was not satisfied with the "data" posted. I know that's a personal problem of mine, which is why I'm going to do my own testing. As far as the pruning, well I don't know, once it died down I forgot about it.

Some of you posted great info; the 50/50 weight distribution, the weight comparison (even tho it was without PS and AC like the FDs) and so forth. It just doesn't click. My eyes see something, my mind does what it does best and then you give info that just doesn't fit into what my brain is telling me.

My goal:
document braking, acceleration (wonder who'll win, lol), slalom, skidpad and actual track racing. I want to be able to finally say; "OK, this is what's really going on. Here is back to back comparisons, videos, and other data."

Last edited by phoenix7; 01-28-08 at 05:23 PM.
Old 01-28-08 | 05:38 PM
  #358  
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Originally Posted by phoenix7
yeah, except for the fact that I was not satisfied with the "data" posted. I know that's a personal problem of mine, which is why I'm going to do my own testing. As far as the pruning, well I don't know, once it died down I forgot about it.

Some of you posted great info; the 50/50 weight distribution, the weight comparison (even tho it was without PS and AC like the FDs) and so forth.
Fair enough. Have you gotten in the 20BT guys **** for screwing up their handling? I saw one 20BTTT on the forum here and all the board members thought it was the coolest thing since sliced bread. All that exhaust and intake piping doesn't much weight

Originally Posted by phoenix7
It just doesn't click. My eyes see something, my mind does what it does best and then you give info that just doesn't fit into what my brain is telling me.
Yes, no offence, but that does sound like a personal problem.

Originally Posted by phoenix7
My goal:
document braking, acceleration (wonder who'll win, lol), slalom, skidpad and actual track racing. I want to be able to finally say; "OK, this is what's really going on. Here is back to back comparisons, videos, and other data."
Sounds good to me. I'll be there if I can fit it in the schedule. But you know what the problem will be? There will be somecars that people have $500 in and some with $50k in and the results will vary grately for both sides.... then the **** talking will continue.

Have you heard of the Grassroots $200X challenge?

The August 2005 issue of Grassroots Motorsports Magazine will features quite a few V-8 powered RX-7s that entered their $2005 Challenge event in Florida. The premise of the event is to build the best handling, best appearing, and quickest car possible for a total budget of $2005., including the price of the car and all components. You will be surprised at the wide variety of entrants and how creative they are. Check out the August issue for a feature on this year's challenge winner, a FORD POWERED 2nd gen RX-7!!! For a free copy of the magazine or to check out this year's $2005 challenge results, go to the Grassroots Motorsports website.
In the 2004 event, of a total of 76 cars that participated, a total of 9 RX-7s took part in the event, 5 V-8 powered and 4 rotary powered. In the drag race portion, all the V-8 RX-7s finished ahead of the rotary powered cars. No surprise here. The quickest V-8 RX-7 recorded a 12.636 ET, the quickest rotary's ET was a 14.323. What DID suprise a lot of sports car people is the results of the autocross competition. The quickest RX-7, a V-8, finished nearly 4 seconds ahead of the quickest rotary version. Among the 9 RX-7s present in the autocross, V-8 power captured 4 of the top 5 spots. Don't listen to those who tell you that a big V-8 will ruin your handling!!!
Daryl Evans's ZZ4 powered RX-7 solo car was last years local, regional and Canadian Western Champion in E Mod.
Old 01-28-08 | 06:20 PM
  #359  
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Originally Posted by su_maverick
There are enough NJ people on here to do this.

Rotary
- Goodfella - Rich, I know you would be down for this
- turbotommy is in NJ and apparently wants to race
- dwrx7 is also in NJ

LS1
- su_maverick - I am willing to meet up with any of you but this is a friendly competition so keep the drama down
- 2MCHPWR - Scott is always at auto-x events and some track days so Im sure he is willing
- Snyper - he has said he could come down

I cant vouch for everyone but this should happen so people will stop behaving like children. The rotary is not a hand grenade waiting to blow and the LS motors are not knuckle dragging straight line machines. Just because some of you need to feel like you belong to this exclusive club doesnt give you the right to bash others for making another choice (this applies to rotary & v8 owners).

Lets stop talking and set it up.

When? Where? What?
I have ABSOLUTELY NO PROBLEM coming down. I do have a problem with the immature **** talking. I will come down and race at a friendly level. **** talking is fine and is fun, but when kids like that douche bag told me to bring a gunrack down too..thats just ridiculous. This is a sport and I race/build my cars to have fun, not make it hostile.
Old 01-28-08 | 06:24 PM
  #360  
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Originally Posted by phoenix7
FD Vs. FD I want to see it.
See id like to do that but I know exactly whats gonna happen, if I beat any car ill get the "yeah but my car has ps,ac, blah blah blah"
Old 01-28-08 | 06:28 PM
  #361  
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Originally Posted by phoenix7
I took this into my own hands and I'm waiting for a local to finish his LS swap so we can do back to back testing. Braking, slalom, 1/4 mile (yeah, my measly 350hp might get owned), and then racetrack (local club will be going to Thunderhill in 2 weeks and other events throughout the year). Ask me this summer and I might have some real answers for you.
I'd be very curious to see the results of this, as unfortunately I don't give a rats *** about racing in a straight line, but more curious to see what the overall handling implications are on the car as a whole.
Old 01-28-08 | 06:46 PM
  #362  
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This will only be for ood natured people. Jackasses need not apply. I think there is an even mix for straight liners and corner carvers. I don't do straight line either.
Old 01-28-08 | 06:50 PM
  #363  
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Originally Posted by su_maverick
This will only be for ood natured people. Jackasses need not apply.
Exactly. If I come(which I will) and im surrounded by a bunch of idiots, ill just leave,because I know it would **** them off even more. Plus, its not a very far drive anyways.
Old 01-28-08 | 06:57 PM
  #364  
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sounds good. I think we can put a good group together
Old 01-28-08 | 07:16 PM
  #365  
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I may not be perfectly correct, but the 2005 grm $2005 challenge. The rx7 with the v8 had the power, so that helped it alot during the drag, and well the autox as well. I beleive if my memory serves me right the other rotarys were NA cars. I do remember a red t2 a year or 2 earlier who took a top prize running a rotary as well. I think people here are bashing ls1 conversions too much. There was a good point made, about a 20b TTT, and everyone went nuts over. I agree, that would make a good drag car, but would also throw off weight, so the only reason why its cool is well its a 20b TTT. So the V8 guys have a perfectly valid argument. However for me, if I saw the 20b TTT, it wouldnt do as much for me since Im road course biased. It would just seem like too much to go wrong, which is also why i cant bash the v8 guys as much. NA power is reliable, and there is alot less that could go wrong. Which is why someday I wish to go to a 20b NA, instead of a 13b T. I like the power potential of the turbo, but I want the simplicity of a NA

Last edited by Turbo23; 01-28-08 at 07:17 PM. Reason: spelling
Old 01-28-08 | 07:20 PM
  #366  
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and also for the v8 guys, just cause people run a rotary doesnt mean they are "dumb and like to spend money" We all know the v8 conversion cost a pretty penny if done right. Its simply the reason they bought a rx7, its for the rotary.
Old 01-28-08 | 07:30 PM
  #367  
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Originally Posted by Turbo23
I may not be perfectly correct, but the 2005 grm $2005 challenge. The rx7 with the v8 had the power, so that helped it alot during the drag, and well the autox as well. I beleive if my memory serves me right the other rotarys were NA cars. I do remember a red t2 a year or 2 earlier who took a top prize running a rotary as well. I think people here are bashing ls1 conversions too much. There was a good point made, about a 20b TTT, and everyone went nuts over. I agree, that would make a good drag car, but would also throw off weight, so the only reason why its cool is well its a 20b TTT. So the V8 guys have a perfectly valid argument. However for me, if I saw the 20b TTT, it wouldnt do as much for me since Im road course biased. It would just seem like too much to go wrong, which is also why i cant bash the v8 guys as much. NA power is reliable, and there is alot less that could go wrong. Which is why someday I wish to go to a 20b NA, instead of a 13b T. I like the power potential of the turbo, but I want the simplicity of a NA
well look at this and tell me how this makes sense:
Originally Posted by GRM
The key to winning the Challenge is balance. This was proven by the $2006 Overall Winner. The car was a 1988 Mazda RX7 with a 350 shoehorned into it. This RX7 was 2nd at the drags, 5th in Autocross, and 15th in Concourse, but it won overall because of its balance.
I don't think you should be scared of the turbo rotary as much as you should be worried about proper maintenance. Tune your car propely (or better yet, have someone who knows what they're doing tune it for you) and you won't have to worry about the so-called complexity of the boosted rotary.

EGT, AFR and temp monitoring equipment is a must if you're going to maintain your car (whether piston or rotary). The rotary is like hot girl you have to pamper all the time but in the end you're gonna have the best sex ever. The V8 is that chick that gives it up at a party for free. Depends on what you like. Like I said, There is nothing wrong with getting head in the bathroom, it's just not first choice.

Last edited by phoenix7; 01-28-08 at 07:36 PM.
Old 01-28-08 | 11:25 PM
  #368  
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Originally Posted by XxMerlinxX
For the love of all that is good and holy, it's spelled L-I-N-G-E-N-F-E-L-T-E-R! I didn't even have to google it. Everyone save it to your FireFox spell checker so this doesn't keep happening. I don't want to see anymore Langanfilters, Lingenfelder, or Leygunphaldurz. Okay?

Old 01-29-08 | 09:34 AM
  #369  
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Originally Posted by phoenix7
I don't think you should be scared of the turbo rotary as much as you should be worried about proper maintenance. Tune your car propely (or better yet, have someone who knows what they're doing tune it for you) and you won't have to worry about the so-called complexity of the boosted rotary.

EGT, AFR and temp monitoring equipment is a must if you're going to maintain your car (whether piston or rotary). The rotary is like hot girl you have to pamper all the time but in the end you're gonna have the best sex ever. The V8 is that chick that gives it up at a party for free. Depends on what you like. Like I said, There is nothing wrong with getting head in the bathroom, it's just not first choice.
I dont think it is this overall fear of the rotary that leads some of us to move over to the LSx engines. Personally, I have nothing against the rotary itself. But, I think that there still needs to be a ton of R&D on the supporting systems on it to make it a viable engine in the American marketplace. It is not the technology of the engine that fails but the technology supporting it.

Think about it. What are the two main reasons for someone blowing their rotary engine?
- Detonation
- Overheating/coolant seals

Both of these are no fault of the engine. There needs to be much more development in the areas of boost management, fuel delivery and coolant systems before I jump back on the bandwagon of the turbo rotary. There is nothing wrong with an NA rotary but when deciding between a NA 20B and the LS motor, I looked at the availability of replacement engines and replacement parts. Aside from the RX8 full race model, the 20B is a defunct model right now that is dwindling in supply and support. Until I have a garage, a truck and a trailer of my own, I cant take the risk of having an engine that nobody can work on. I guarantee that 90% of the mechanics in the US would look at that motor like it was something out of Star Wars.

I think your analogy is a little off. To me, the turbo rotary is the really hot girl that is wild in the sack but might steal your car and leave you stranded in the middle of nowhere looking like an *** while the LS1 is the girl that is still pretty damn good in bed but you know she is going to be there for you.

Rotary guys have spent so long trying to dispel the myths associated with the motor but you don’t see that you are doing the exact same thing now. Its pretty hypocritical if you ask me. Vettes and GTOs are known competitors in the road racing world.
Old 01-29-08 | 09:48 AM
  #370  
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Originally Posted by su_maverick
Vettes and GTOs are known competitors in the road racing world.
And on the streets for the insane, reliable, and efficient power they make. Thats why I went with them. I like rotary cars but the one I experienced sucked. They are a pain in the *** to drive in stop and go..you have to rev the **** out of them and slip the clutch so they don't stall..my Trans am used to start in 1st gear with no gas. They tested the new Z06 and did a 5th(yes fifth) gear start from 0-170.

I want something that I can easily drive without having to worry. Plus if any of you have ever driven a big turbo car at the track, or on the street(my 94 supra with a 67mm turbo 26psi) then you know how much of a f'n pain it is to feather in and out of the violent boost that makes the tires melt. The LS1 has a fairly steady VERY STRONG power band and you don't have to guess or try 600 diffrent launch techniques to get it right.
Old 01-29-08 | 10:42 AM
  #371  
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Here you go guys. Read this thread. It involves 2 friends, both with FDs (one rotary, one LS1), both autocross frequently, and they switch cars regularly.

https://www.rx7club.com/forum/showthread.php?t=280030

Read the WHOLE thing. By the end you see that although the LS1 isnt for him, TurboJeff, an experienced, respected, and fast rotary FD driver pulls off better times in the LS1 FD, and admits that the swap works. It's fast. period. In the end thats what you should care about.

Heres the best quote from a rotary owner moderator of RX7Club.
Originally Posted by DamonB
...polar moment, weight distribution, over powering the chassis and whatever else can be argued until everyone is blue in the face. The stopwatch doesn't lie. A car that is racing has only one thing it needs to do well: Get to the finish quickly. This v8 car don't appear to be no slouch
Old 01-29-08 | 02:09 PM
  #372  
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Originally Posted by su_maverick
I dont think it is this overall fear of the rotary that leads some of us to move over to the LSx engines. Personally, I have nothing against the rotary itself. But, I think that there still needs to be a ton of R&D on the supporting systems on it to make it a viable engine in the American marketplace. It is not the technology of the engine that fails but the technology supporting it.

Think about it. What are the two main reasons for someone blowing their rotary engine?
- Detonation
- Overheating/coolant seals

Both of these are no fault of the engine. There needs to be much more development in the areas of boost management, fuel delivery and coolant systems before I jump back on the bandwagon of the turbo rotary. There is nothing wrong with an NA rotary but when deciding between a NA 20B and the LS motor, I looked at the availability of replacement engines and replacement parts. Aside from the RX8 full race model, the 20B is a defunct model right now that is dwindling in supply and support. Until I have a garage, a truck and a trailer of my own, I cant take the risk of having an engine that nobody can work on. I guarantee that 90% of the mechanics in the US would look at that motor like it was something out of Star Wars.

I think your analogy is a little off. To me, the turbo rotary is the really hot girl that is wild in the sack but might steal your car and leave you stranded in the middle of nowhere looking like an *** while the LS1 is the girl that is still pretty damn good in bed but you know she is going to be there for you.

Rotary guys have spent so long trying to dispel the myths associated with the motor but you don’t see that you are doing the exact same thing now. Its pretty hypocritical if you ask me. Vettes and GTOs are known competitors in the road racing world.

+1 on above. You took the words right out of my mouth. I have been rotary only since 1985. I currently own an RX-8 as a DD. I did the LS1 swap on my 94 for basically the reasons stated. I REALLY wanted to do the 20B, but the cost? No thanks.
Old 01-29-08 | 02:15 PM
  #373  
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Originally Posted by Snyper
And on the streets for the insane, reliable, and efficient power they make. Thats why I went with them. I like rotary cars but the one I experienced sucked. They are a pain in the *** to drive in stop and go..you have to rev the **** out of them and slip the clutch so they don't stall..my Trans am used to start in 1st gear with no gas. They tested the new Z06 and did a 5th(yes fifth) gear start from 0-170.

I want something that I can easily drive without having to worry. Plus if any of you have ever driven a big turbo car at the track, or on the street(my 94 supra with a 67mm turbo 26psi) then you know how much of a f'n pain it is to feather in and out of the violent boost that makes the tires melt. The LS1 has a fairly steady VERY STRONG power band and you don't have to guess or try 600 diffrent launch techniques to get it right.
yes sir.... no driving involved. did you install a cup holder yet
Old 01-29-08 | 02:56 PM
  #374  
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Originally Posted by su_maverick

I think your analogy is a little off. To me, the turbo rotary is the really hot girl that is wild in the sack but might steal your car and leave you stranded in the middle of nowhere looking like an *** while the LS1 is the girl that is still pretty damn good in bed but you know she is going to be there for you.
I'll give you that one to an extent (the girl that takes your car and leaves you stranded only does so after you beat the **** out of her and then expect her to serve you dinner)! Made me LOL though. well you have to admit, the misconceptions on the rotary are so absurd, sometimes, that some of us might get overzealous. For that, there is no excuse.
Old 01-29-08 | 04:44 PM
  #375  
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Originally Posted by turbotommy
yes sir.... no driving involved. did you install a cup holder yet
Is that supposed to be some lame attempt at an insult?



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