Where did my power go?
07-10-2009, 04:10 AM
#1
Staging Lane
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Where did my power go? I just got done installing an HKE built 402,Midwest Chassis 9", SPEC twin disc,custom fuel system, and full suspension.Drove the car around for about 130 miles and went to the dyno for some tuning.
My engine combo consists of:
-8cc Wiseco pistons
TFS 225 cc heads
251/259 .624/.624 110+4
Victor Jr Intake
Intakeelbows.com elbow
NW90mm TB
85mm MAF
TSP 1/78 headers
TSP 3" off-road Y-pipe
As far as I know the total timing was 9 degrees over stock
The numbers were 441rwhp and 423rwtq
I know that I might be leaving some power left on the table with the elbow on top of the intake, perhaps maybe some with the intake not being port matched to the heads.I'm just curious as to why these numbers seem so ridiculously low. If anyone has any type of insight let me know.
My engine combo consists of:
-8cc Wiseco pistons
TFS 225 cc heads
251/259 .624/.624 110+4
Victor Jr Intake
Intakeelbows.com elbow
NW90mm TB
85mm MAF
TSP 1/78 headers
TSP 3" off-road Y-pipe
As far as I know the total timing was 9 degrees over stock
The numbers were 441rwhp and 423rwtq
I know that I might be leaving some power left on the table with the elbow on top of the intake, perhaps maybe some with the intake not being port matched to the heads.I'm just curious as to why these numbers seem so ridiculously low. If anyone has any type of insight let me know.
07-10-2009, 03:28 PM
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Staging Lane
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The compression is 10.8-1, which isn't extremely low but not as high as other setups out there. I don't feel like the half point in compression would account for the hp and tq to be down so much.What other ideas do you guys have? I would really like to get this thing putting out as much as it should.
07-10-2009, 03:44 PM
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Does the car feel like a 440 rwhp car, or does it feel like a 550 rwhp car ?? If you answered 550 rwhp that is where you should be with a setup like yours.
Just take a look at my sig. Much less aggressive and makes 541 rwhp 505 rwtq.
What kind of dyno?
What cc are the 225's miled to? That 1/2 point of compression could be hurting more then you think.
How does the power/tq feel down low? How is throttle response? Like someone already said, ditch the elbow. There is a thread about a guy that swapped his 90* elbow for some other type, sorry I can't remember what he got but he picked up some serious power.
Just take a look at my sig. Much less aggressive and makes 541 rwhp 505 rwtq.
What kind of dyno?
What cc are the 225's miled to? That 1/2 point of compression could be hurting more then you think.
How does the power/tq feel down low? How is throttle response? Like someone already said, ditch the elbow. There is a thread about a guy that swapped his 90* elbow for some other type, sorry I can't remember what he got but he picked up some serious power.
Last edited by allngn_c5; 07-10-2009 at 03:51 PM.
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07-10-2009, 07:19 PM
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07-11-2009, 05:15 AM
#10
Staging Lane
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Does the car feel like a 440 rwhp car, or does it feel like a 550 rwhp car ?? If you answered 550 rwhp that is where you should be with a setup like yours.
Just take a look at my sig. Much less aggressive and makes 541 rwhp 505 rwtq.
What kind of dyno?
What cc are the 225's miled to? That 1/2 point of compression could be hurting more then you think.
How does the power/tq feel down low? How is throttle response? Like someone already said, ditch the elbow. There is a thread about a guy that swapped his 90* elbow for some other type, sorry I can't remember what he got but he picked up some serious power.
Just take a look at my sig. Much less aggressive and makes 541 rwhp 505 rwtq.
What kind of dyno?
What cc are the 225's miled to? That 1/2 point of compression could be hurting more then you think.
How does the power/tq feel down low? How is throttle response? Like someone already said, ditch the elbow. There is a thread about a guy that swapped his 90* elbow for some other type, sorry I can't remember what he got but he picked up some serious power.