tt408 first dyno fun
Originally Posted by NOSjohn
He's not making power 'cuz he's got a big hole in his piping to turbine side. 
Those numbers are fine for a mustang dyno...as previously stated. What specific size are the turbos?
Those numbers are fine for a mustang dyno...as previously stated. What specific size are the turbos?
Originally Posted by NOSjohn
He's not making power 'cuz he's got a big hole in his piping to turbine side.
Those numbers are fine for a mustang dyno...as previously stated. What specific size are the turbos?
Those numbers are fine for a mustang dyno...as previously stated. What specific size are the turbos?
rofl, go get that fixed and dyno it again! I bet your IAT #s drop quite a bit, remember that you can make the same amount of boost with a big leak but your turbo will be working much harder.
Thread Starter
Staging Lane
Joined: Aug 2005
Posts: 69
Likes: 0
Obviously that is where the wastegate went, I think obviously anyhow??
Car made 660 in the end, but still floats the valves at 5500 rpm..
I'm going to bet that is over 750 on a dynojet, being that my car dynoed 420 here on a dynojet and 350 there on the mujstang dyno(n/a of course), and altitude was about the same.
I'm going to go back to stock rockers and pushrod lengths, and seee what happens from there.
Car made 660 in the end, but still floats the valves at 5500 rpm..
I'm going to bet that is over 750 on a dynojet, being that my car dynoed 420 here on a dynojet and 350 there on the mujstang dyno(n/a of course), and altitude was about the same.
I'm going to go back to stock rockers and pushrod lengths, and seee what happens from there.
Staging Lane
Joined: Jun 2006
Posts: 68
Likes: 0
Originally Posted by kindaslo
Hp performance just got my c5 finished up and is dynoing it with the stage 2 turbos.
8 psi netter 630hp/670 tq
valvefloat seems ot be a problem as the motor wont rev past 6000 rpm.
I have comp 921's, what springs are boosted guys running??
8 psi netter 630hp/670 tq
valvefloat seems ot be a problem as the motor wont rev past 6000 rpm.
I have comp 921's, what springs are boosted guys running??
DoC
Yeah, those 921's shouldn't be the culprit, unless they are worn out and have lost their tension. I couldn't see them floating at 5500-5800rpm. Those are still some huge *** numbers for 8# of boost, I am dang jealous. Hope you find out exactly what it is, and get to your goal!
Originally Posted by kindaslo
Obviously that is where the wastegate went, I think obviously anyhow??
Car made 660 in the end, but still floats the valves at 5500 rpm..
I'm going to bet that is over 750 on a dynojet, being that my car dynoed 420 here on a dynojet and 350 there on the mujstang dyno(n/a of course), and altitude was about the same.
I'm going to go back to stock rockers and pushrod lengths, and seee what happens from there.
Car made 660 in the end, but still floats the valves at 5500 rpm..
I'm going to bet that is over 750 on a dynojet, being that my car dynoed 420 here on a dynojet and 350 there on the mujstang dyno(n/a of course), and altitude was about the same.
I'm going to go back to stock rockers and pushrod lengths, and seee what happens from there.
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Originally Posted by Boostaholic
It sure is where the wastegate goes! I'm just blind
Thread Starter
Staging Lane
Joined: Aug 2005
Posts: 69
Likes: 0
Originally Posted by 67Firebird455
Yeah, those 921's shouldn't be the culprit, unless they are worn out and have lost their tension. I couldn't see them floating at 5500-5800rpm. Those are still some huge *** numbers for 8# of boost, I am dang jealous. Hope you find out exactly what it is, and get to your goal!
That doesn't sound right... But it's not coming up on the rev limiter? That is the strangest thing I've ever heard. Are you sure timing isn't being backed off a ton on the curve and it's now allowing it to run past 5800? That is so strange.
Thread Starter
Staging Lane
Joined: Aug 2005
Posts: 69
Likes: 0
As far as dealing with hp, I have nothing bad to say about them. They did take longer than promised to get the car done, but what shop doesn't?
I was always able to get ahold of Nathan or Jimmy, and they returned my calls within 24 hours..
I used to work at a shop myself and know what pita it is to deal with customers, so i don't get bent when someone doesn't call me back in 3 hours like most people...
Expect them to take about 4 months if you give them your car, I understand that to be the norm, but I got my car back and it runs good..
I was always able to get ahold of Nathan or Jimmy, and they returned my calls within 24 hours..
I used to work at a shop myself and know what pita it is to deal with customers, so i don't get bent when someone doesn't call me back in 3 hours like most people...
Expect them to take about 4 months if you give them your car, I understand that to be the norm, but I got my car back and it runs good..