- Joined
- May 28, 2001
- Messages
- 16,519
Not exactly what I was looking for...
Best pull, [No 13] was 604RWHP and 638 TQ. Was looking for 700 TQ. [25psi boost]
Engine pulled great to 4500, started stuttering a bit, went fat,[O2 corr at 4000 was 4% taken out.. hit 4500, started the stutter and the O2 was then pulling 11%] and then managed to run on up to 6200 B4 the pull was concluded.
I had an interesting experiment w/ the dual 9" cleaners I have installed.
Pull 7 was at 20psi and the cleaners were in place. Resulting in 576HP/604 TQ.
Pull 8 was w/ the intake pipe off at the turbo inlet. Resulting in 556Hp and 617TQ !!! We noted an immediate rise in MAT. Begin pull 80* end pull 122*!!
Rest of pulls were w/ the pipe in place but not hooked to the plenum box.
Pulls 5 & 6 were with exh closed,[5] and dump open,[6] Found only 3HP and 4#TQ improvement w/ it open...
Will have more to share when we look at the external data logger.
I had FP, boost, rpm and exh backpressure instrumented.
Anyone have any input on the stutter, going fat scenario??
I'm leaning towards the spark not getting there, the fuel not being burned and the Wb sensor seeing rich. Sound logical??
Also, Anyone have any ideas as to the best way to get the spark intensity up to par?? I have new coils and module to install next.
MSD?? Etc??
Thanks for the help!
Next time it's track testing..
Best pull, [No 13] was 604RWHP and 638 TQ. Was looking for 700 TQ. [25psi boost]
Engine pulled great to 4500, started stuttering a bit, went fat,[O2 corr at 4000 was 4% taken out.. hit 4500, started the stutter and the O2 was then pulling 11%] and then managed to run on up to 6200 B4 the pull was concluded.
I had an interesting experiment w/ the dual 9" cleaners I have installed.
Pull 7 was at 20psi and the cleaners were in place. Resulting in 576HP/604 TQ.
Pull 8 was w/ the intake pipe off at the turbo inlet. Resulting in 556Hp and 617TQ !!! We noted an immediate rise in MAT. Begin pull 80* end pull 122*!!
Rest of pulls were w/ the pipe in place but not hooked to the plenum box.
Pulls 5 & 6 were with exh closed,[5] and dump open,[6] Found only 3HP and 4#TQ improvement w/ it open...
Will have more to share when we look at the external data logger.
I had FP, boost, rpm and exh backpressure instrumented.
Anyone have any input on the stutter, going fat scenario??
I'm leaning towards the spark not getting there, the fuel not being burned and the Wb sensor seeing rich. Sound logical??
Also, Anyone have any ideas as to the best way to get the spark intensity up to par?? I have new coils and module to install next.
MSD?? Etc??
Thanks for the help!
Next time it's track testing..