Why do these numbers seem so low?
Originally Posted by ddnspider
define you "had the cam ground and found out it isnt right" and any flow numbers or info on the heads?
Not really any info on the heads. The car was at GMR up until around the middle of May then was down for awhile while the turbo kit was being built. Havent had it all long enough yet (or enough trouble with it yet) to get to really know anything about the setup
Your injectors will support more with a boost reference fuel pressure regulator. If you are running a consistant 60 psi fuel pressure, thats with zero drop, when you're at 16psi, thats an equvalent fuel pressure of 44psi. You need more pressure to maintain the D/P accross the injectors when in boost.
Ryan K.
Ryan K.
Originally Posted by Ryan K
Your injectors will support more with a boost reference fuel pressure regulator. If you are running a consistant 60 psi fuel pressure, thats with zero drop, when you're at 16psi, thats an equvalent fuel pressure of 44psi. You need more pressure to maintain the D/P accross the injectors when in boost.
Ryan K.
Ryan K.
And as far as the cam goes, it depends on your over all needs. It would be fine with a combination that you're not going to spin up to 7000 rpm.
The heads are "fine" but without being ported, they are going to be a restriction.
Ryan K.
The heads are "fine" but without being ported, they are going to be a restriction.
Ryan K.
Originally Posted by Ryan K
Also, do you have a log of the boost level? It seams that you may be having a boost spike at peak HP/TQ then the boost is dropping off as RPM increases?
Ryan K
Ryan K
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo then why not get ahold of GMR and find out from them exactly what you have for the heads and such.I take it your goals are higher than what you made cause for most builds that cam would have been fine.If your heads are stock then like Ryan said your leaving alot on the table as any power you would have gained NA would be magnified by adding boost.
Originally Posted by fletchls1
I dont have a log, but watching the gauge while it was on the dyno it never left 16psi once the boost controller stopped it.
Well if the boost is steady then you can rule the wastegate and turbo out. If there was a problem with those, boost would drop on the top end. How about valavesprings...which ones are you using?
I'm 8.0:1, and you should assume that 1psi is needed just to get you up to the equivalent of 9:1 power.
That being said, your numbers are promising except that you peaked really early. I'd look into that and look to understand if you ran out of turbo, injector, valvespring, or an into another issue.
Took Speed Inc. two separate dyno sessions to get my car to good numbers... springs and rockers needed to be changed.
That being said, your numbers are promising except that you peaked really early. I'd look into that and look to understand if you ran out of turbo, injector, valvespring, or an into another issue.
Took Speed Inc. two separate dyno sessions to get my car to good numbers... springs and rockers needed to be changed.
Originally Posted by Pro Stock John
I'm 8.0:1, and you should assume that 1psi is needed just to get you up to the equivalent of 9:1 power.
That being said, your numbers are promising except that you peaked really early. I'd look into that and look to understand if you ran out of turbo, injector, valvespring, or an into another issue.
Took Speed Inc. two separate dyno sessions to get my car to good numbers... springs and rockers needed to be changed.
That being said, your numbers are promising except that you peaked really early. I'd look into that and look to understand if you ran out of turbo, injector, valvespring, or an into another issue.
Took Speed Inc. two separate dyno sessions to get my car to good numbers... springs and rockers needed to be changed.