New HP numbers
02-24-02, 01:45 PM
#26
Super Newbie
Originally posted by mazdaspeed7
Now many of you people who say porting the intake manifold will only add 2 hp have EVER done it?? Go look at Pual Yaws site. I dont remember the exact numbers, but I think porting the manifold gained as much as 30% more flow, and like 10% more power.(I could be wrong on the exact numbers, but its in his site).
If you have NO experience with something, how can you say what it can and cant do. If any of you have ever briven a n/a with a well ported intake manifold or have dyno charts of before and after, then I would like to hear your opinions. But that isnt the case.
Now many of you people who say porting the intake manifold will only add 2 hp have EVER done it?? Go look at Pual Yaws site. I dont remember the exact numbers, but I think porting the manifold gained as much as 30% more flow, and like 10% more power.(I could be wrong on the exact numbers, but its in his site).
If you have NO experience with something, how can you say what it can and cant do. If any of you have ever briven a n/a with a well ported intake manifold or have dyno charts of before and after, then I would like to hear your opinions. But that isnt the case.
BTW, Yaw has a flowbench. I don't see you flow testing anything, just hogging it out with a porting tool any way you see fit
02-24-02, 01:58 PM
#28
Super Newbie
Originally posted by 1Revvin7
does anyone know Paul Yaw's website address? i think we all want to see it....
does anyone know Paul Yaw's website address? i think we all want to see it....
02-24-02, 02:20 PM
#29
interesting, ic Felix's where is getting his theory ( whatever) with only using a grinder here and there, ya its possible ur only getting like 2 hp. But if u did it like yaw, using a flow bench, and welding and reshaping etc, with all of the testing tools i can see making a lot more hp out doing this. But then again this is just and observation i made, i don't have a ported manifold etc. no exp. Where is soul? he has a ported FD manifold on his car. He told me he gained 30 hp from the manifold and port job.
the link about his port job
the link about his port job
Last edited by Turblown; 02-24-02 at 02:23 PM.
02-24-02, 05:31 PM
#31
Senior Member
Thread Starter
Join Date: Aug 2001
Location: GA
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Felix Wankel
Um, I USED TO HAVE AN NA!!!!!!!!!!!!!!!!!!!!!! I did everyting conceiveable to it. You know what, it was STILL slow!
Um, I USED TO HAVE AN NA!!!!!!!!!!!!!!!!!!!!!! I did everyting conceiveable to it. You know what, it was STILL slow!
But then again, the cars that are worth beating, I agree, the N/A is slow. Hmm, maybe a turbo next since I really can't do anything else to my car.
Carl
02-24-02, 07:30 PM
#32
Full Member
Join Date: Oct 2001
Posts: 231
Likes: 0
Received 0 Likes
on
0 Posts
Re: New HP numbers
Originally posted by Silver88GXL
Hey all, the SE-RX7 club had another dyno day today and I found 10 more hp and 5 lbs of torque, bringing my total rear wheel Hp numbers to 161.6 and 127.4!! That is up from 152Hp and 122.5lbs/ft torque.
...
My modifications include K&N air filter, TB Mod, 89+ Intake manifolds, 86 motor, 6port sleeves removed, RB Headers, Midpipe, HKS catback, and an electric air pump. Not too shabby.
All motor, no porting what so ever.
Sorry to rant and rave, but I am extatic!
Carl
Hey all, the SE-RX7 club had another dyno day today and I found 10 more hp and 5 lbs of torque, bringing my total rear wheel Hp numbers to 161.6 and 127.4!! That is up from 152Hp and 122.5lbs/ft torque.
...
My modifications include K&N air filter, TB Mod, 89+ Intake manifolds, 86 motor, 6port sleeves removed, RB Headers, Midpipe, HKS catback, and an electric air pump. Not too shabby.
All motor, no porting what so ever.
Sorry to rant and rave, but I am extatic!
Carl
Great! What was the final mod that gave you another 10rwhp?? It can't be the removed sleeves, or could it?
02-24-02, 07:37 PM
#33
Super Newbie
Originally posted by Silver88GXL
Hmm, maybe a turbo next since I really can't do anything else to my car.
Carl
Hmm, maybe a turbo next since I really can't do anything else to my car.
Carl
02-24-02, 09:03 PM
#34
Senior Member
Thread Starter
Join Date: Aug 2001
Location: GA
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Re: Re: New HP numbers
Originally posted by ka8legend
Great! What was the final mod that gave you another 10rwhp?? It can't be the removed sleeves, or could it?
Great! What was the final mod that gave you another 10rwhp?? It can't be the removed sleeves, or could it?
Originally posted by Felix Wankel
Come to the dark side! Hang a TO4B on the side of that thing at about 8 psi
Come to the dark side! Hang a TO4B on the side of that thing at about 8 psi
Carl
02-24-02, 09:42 PM
#35
Full Member
Join Date: Oct 2001
Posts: 231
Likes: 0
Received 0 Likes
on
0 Posts
Re: Re: Re: New HP numbers
Originally posted by Silver88GXL
Nope, the sleeves have been gone for a long time. The only thing I have done since the last time was the electric air pump, TB mod, and my A/C compressor blew up. So, I guess all that parasitic drag is gone.
Carl
Nope, the sleeves have been gone for a long time. The only thing I have done since the last time was the electric air pump, TB mod, and my A/C compressor blew up. So, I guess all that parasitic drag is gone.
Carl
Most likely it was from the stucked VDI that caused you the potential 10rwhp. Now that it's working, the potential has been unleashed.
02-24-02, 11:19 PM
#38
Senior Member
Thread Starter
Join Date: Aug 2001
Location: GA
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Re: Re: Re: Re: New HP numbers
Originally posted by ka8legend
Most likely it was from the stucked VDI that caused you the potential 10rwhp. Now that it's working, the potential has been unleashed.
Most likely it was from the stucked VDI that caused you the potential 10rwhp. Now that it's working, the potential has been unleashed.
Carl
02-24-02, 11:47 PM
#40
rawr
iTrader: (2)
Join Date: Feb 2001
Location: Silver City, NM
Posts: 2,331
Likes: 0
Received 0 Likes
on
0 Posts
well, mazdaspeed7 is porting my intake manifold right now, i will make it a point to get a dyno with and without the manifold to see how much it actually does do, going from 86-88 manifold to the 89-91 should be good for 10-12hp im thinking, and after that its the porting job that makes it go up, but i will definitely post the numbers when i can do both
02-25-02, 08:40 PM
#42
Full Member
Join Date: Oct 2001
Posts: 231
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by supergoat
VERY nice numbers. Gives me hope. I can't wait to finally purchase a header now.
VERY nice numbers. Gives me hope.
I can't wait to finally purchase a header now.
So all this time, it was the parasitic accessories that's been sucking up 10rwhp.
02-25-02, 09:01 PM
#43
Rotary Freak
How does a header give only 2hp. I figured it would give 5 WHP compared to a streight pipe. The potential goes up with the more mods u have. I would think that RX-7.com would say that because they dont sell headers
I bought my race pipe off them.
I bought my race pipe off them.
02-26-02, 12:26 AM
#45
Full Member
Join Date: Oct 2001
Posts: 231
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Silver88GXL
...
BTW- I am still running the PS, A/C, and the OEM fan. That is probably robbing some HP.
Carl
...
BTW- I am still running the PS, A/C, and the OEM fan. That is probably robbing some HP.
Carl
02-26-02, 01:27 AM
#46
Eggs are like fowl cheese
Join Date: Mar 2001
Location: Daniel Island, SC
Posts: 574
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by mazdaspeed7
Headers have minimal gains over a race pipe w/ stock exhaust manifold. 5 hp, tops.
Headers have minimal gains over a race pipe w/ stock exhaust manifold. 5 hp, tops.
02-26-02, 10:59 AM
#47
Originally posted by ka8legend
I'm somewhat confused here, you mentioned later in the post that your 10rwhp gain was from removed airpump and blown A/C. But here in the quote you're still running the A/C and still gained 10rwhp with it?
I'm somewhat confused here, you mentioned later in the post that your 10rwhp gain was from removed airpump and blown A/C. But here in the quote you're still running the A/C and still gained 10rwhp with it?
02-26-02, 11:32 AM
#48
Full Member
Join Date: Feb 2002
Location: rock me amadeus...
Posts: 230
Likes: 0
Received 0 Likes
on
0 Posts
i'm a little confused too... don't you change to the 89-92 manifold because it's larger piping? wouldn't then porting give the same gains? correct me if i'm wrong please
02-27-02, 12:07 PM
#49
Senior Member
Thread Starter
Join Date: Aug 2001
Location: GA
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by 1Revvin7
im a little confuse too, So did u take off the belt or what?
im a little confuse too, So did u take off the belt or what?
Carl
02-27-02, 12:10 PM
#50
Senior Member
Thread Starter
Join Date: Aug 2001
Location: GA
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by blu_gxl
i'm a little confused too... don't you change to the 89-92 manifold because it's larger piping? wouldn't then porting give the same gains? correct me if i'm wrong please
i'm a little confused too... don't you change to the 89-92 manifold because it's larger piping? wouldn't then porting give the same gains? correct me if i'm wrong please
As for the manifold porting, I am sure it will work, but, the way everyone has been doing it so far is just to grind what ever looks good or looks like it could help flow. If there was flowbench testing on the porting, then I would be more up for it. The way the manifold is designed, I really don't want to take something out that is ment to be there for some velocity reason. Kind of like how you don't want to go honeing out the AFM.
Carl