Just Dyno'd 426rwhp@ 13.5 pounds
Thread Starter
Rotary Enthusiast
Joined: Feb 2004
Posts: 1,391
Likes: 0
From: New york
Originally Posted by pluto
The a/f ratio was very conservative being around 11.2:1 a/f. We made 371rwhp at 11psi. The 426rwhp was actually more like 15-16psi at mid range and taper down to 13.5-14psi. I think most of it has to do with the porting since this is one of the few T78 cars that actually held up the torque up to 7.5k rpm. We were having issues with the boost not holding at higher rpm so we pretty much stop at that point since the hp we made exceeded his expectation (400rwhp is all he wanted).
Joined: Mar 2001
Posts: 30,793
Likes: 646
From: FL-->NJ/NYC again!
Originally Posted by pluto
The a/f ratio was very conservative being around 11.2:1 a/f. We made 371rwhp at 11psi. The 426rwhp was actually more like 15-16psi at mid range and taper down to 13.5-14psi. I think most of it has to do with the porting since this is one of the few T78 cars that actually held up the torque up to 7.5k rpm. We were having issues with the boost not holding at higher rpm so we pretty much stop at that point since the hp we made exceeded his expectation (400rwhp is all he wanted).
Rotary Enthusiast
Joined: Feb 2002
Posts: 750
Likes: 0
From: Florida
i have pics of the ports seeing that it was my old motor in the car!!! hey showoff wassup, and it was john duarte aka boostn7 that ported the motor, showoff dont you just hate when people bash others for there good work...
i will only show the pics if showoff says the word to.
i will only show the pics if showoff says the word to.
Last edited by T88Rx7; May 16, 2006 at 05:15 PM.
Rotary Freak
Joined: Feb 2001
Posts: 1,926
Likes: 0
From: fort worth, tx, usa
I don't think they're talking about showoff's engine, but rather the overlapping that pp13bnos was talking about that you can having a SP engine with an overlap of a PP.....
Originally Posted by T88Rx7
i have pics of the ports seeing that it was my old motor in the car!!! hey showoff wassup, and it was john duarte aka boostn7 that ported the motor, showoff dont you just hate when people bash others for there good work...
i will only show the pics if showoff says the word to.
i will only show the pics if showoff says the word to.
Rotary Enthusiast
Joined: Feb 2002
Posts: 750
Likes: 0
From: Florida
oops then i take that back...lol sorry guys
Originally Posted by pluto
I don't think they're talking about showoff's engine, but rather the overlapping that pp13bnos was talking about that you can having a SP engine with an overlap of a PP.....
Joined: Aug 2002
Posts: 4,152
Likes: 0
From: Pittsburg, KS.
Originally Posted by showoff
supra tt fuel pump, crane cam ignition amp and stock 9's all around
-dj
-dj
Help!
Joined: Mar 2001
Posts: 30,793
Likes: 646
From: FL-->NJ/NYC again!
Originally Posted by ErnieT
Good to see it was made at 16psi, becuase I know your not making 426rwhp at 13psi at 11.2 Good to see the real numbers come out. Congrats.
Ahh yes, now that sounds more like it.
426hp at 13psi would have made me ditch my KAI and get a T78 =P
16psi is more realistic... very similar to my numbers. I believe I was making 420 at 15psi - and we all know Steve likes to tune on the rich side for safety.
426hp at 13psi would have made me ditch my KAI and get a T78 =P
16psi is more realistic... very similar to my numbers. I believe I was making 420 at 15psi - and we all know Steve likes to tune on the rich side for safety.
Rotary Freak
Joined: Feb 2001
Posts: 1,926
Likes: 0
From: fort worth, tx, usa
No, peak hp is made at 13.5psi eventhough it did go up to 15-16psi from 5-6krpm but only held to 13.5 by the time it gets to 7krpm.
on a side note, the car made 371rwhp@11psi (very stable boost since it was around the wastegate spring pressure).
on a side note, the car made 371rwhp@11psi (very stable boost since it was around the wastegate spring pressure).
Originally Posted by ErnieT
Good to see it was made at 16psi, becuase I know your not making 426rwhp at 13psi at 11.2 Good to see the real numbers come out. Congrats.
Thread Starter
Rotary Enthusiast
Joined: Feb 2004
Posts: 1,391
Likes: 0
From: New york
Originally Posted by pluto
No, peak hp is made at 13.5psi eventhough it did go up to 15-16psi from 5-6krpm but only held to 13.5 by the time it gets to 7krpm.
on a side note, the car made 371rwhp@11psi (very stable boost since it was around the wastegate spring pressure).
on a side note, the car made 371rwhp@11psi (very stable boost since it was around the wastegate spring pressure).
-dj
Thread Starter
Rotary Enthusiast
Joined: Feb 2004
Posts: 1,391
Likes: 0
From: New york
Originally Posted by Low Impedance
so...is it fast...or...just kinda so-so.
-dj
Originally Posted by dubulup
learn to feather the throttle a little