Engine/Transmission (1994 - 1998) Benefit from DV's

[TrqMonster]

I was wondering if I installed Delivery valves at this point in time would it be beneficial or should I just wait. I am already pushing my stock turbo I suppose. I plan on twins in near future or at least a B-1 or so and also larger injectors. Here is what I am currently running. 4 GSK going in this Sunday also. Thanks in advance for any input.



Button Clutch

12mm studs

Fire-ringed

60# valve springs

. 120 Injection Lines

Machined Street Cam

Timing at 15. 5*

K&N/BHAF setup

No Torque Plate

Plugged Wastegate= 52 PSI

Autometer Boost & EGT's pilliar mounted

 

[Cooker]

52PSI on an HX35

 

[BPonci]

Well you already have lazer EGTs so why not add lazer cut dvs.

 

[ndurbin]

I've heard some laser cut DVs, aren't exactly laser cut. The from another more high flowing P-pump.



Anybody know anything about that?



Nathan

 

[Got Smoke?]

Best price for "Laser Cut DV's" is JR Adkins, -- email address removed -- or 317-281-3130



P. S. Not affliated with ADP, just a happy customer! :-laf

 

[BPonci]

I don't know about that. I can tell you that the 022s are out of a kamatsoo.

 

[TrqMonster]

The cam that I just had installed has really lowered my EGT's. So will I get any benefit or would I need injectors to really do anything. 52 PSI is what the gauge tells me. They didnt seemed supriesed at Scheids when they test drove, just said to be careful not to blow it as 50-55 is the max. The cam really helped with EGT's and much quicker spool up.

 

[Got Smoke?]

just said to be careful not to blow it as 50-55 is the max.

C. Harlan blew his OEM HX35 @ 49psi!

 

[Cooker]

Can you imagine the drive pressure at 52psi I'm glad he has fire rings and studs.

 

[JoshPeters]

I'd throw in some 370's and 191's for some real pick me up!



Josh

 

[DRAG DIESEL]

52PSI on an HX35

:-laf Cut DV's and 370's @ Full Boost :-laf

#ad

 

[Centeno1]

full boost?

hey this may sound dumb but how do you guys get so much boost at a standstill? I thought boost was realtive to loading of the engine and rpm's i can run like 5 psi standing still but thats it with a max of 43 psi at wot

 

[TrqMonster]

Can you imagine the drive pressure at 52psi I'm glad he has fire rings and studs.

What do you mean by drive pressure?

 

[bmoeller]

hey this may sound dumb but how do you guys get so much boost at a standstill?

He was on the dyno.

 

[RWood]

Drive preasure it the preasure that causes the turbo to spin. This preasure is higher because there is a normal loss a of engery.

 

[Cooker]

Drive preasure it the preasure that causes the turbo to spin. This preasure is higher because there is a normal loss a of engery.

but drive pressure does not alway have to be higher. In fact you would prefer it to be as close to, or below a 1:1 ratio with boost as possible.



Drive pressure is the exhaust gas pressure that drives the turbo. As drive pressure exceeds boost pressure, energy is being wasted, and excess heat created. Drive pressures can pop a head gasket just as easily as to much boost.



FWIW - A stock HX35 is efficient only to a maximum of 37psi or so. Beyond that drive pressure and heat are getting up there.