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-   -   40+ too much? (https://www.dieselbombers.com/5-9l-12v-performance/55220-40-too-much.html)

Heaterguy 07-25-2010 06:56 PM

40+ too much?
 
Put a #100 plate in my truck this weekend in the full foward position, then back 1/8".
Boy what a difference....played with the starwheel to clean up some of the smoke and got it pretty nice. But when i romp on it aside from my clutch saying "no" my boost gauge shoots up to 40+ psi, from what ive read this is not good for a stock turbo. From what i can tell some one installed a boost elbow on top of the afc previously. What is the proper way to lower my boost, or should i look for something that maybe someone "touched"?
Also looking at a new clutch, wondering how much more pedal effort is required for a dd setup.

FastCR 07-25-2010 07:21 PM

i pulled my plate and turned in my starwheel, but didn't slip my clutch until i put the HO sticks in it like you have. if you don't have the money now, back it off just a bit to save your clutch, your right on the edge of slipping it. from what most people say, i have yet to see a map, the hx35 is blowing hot air after 35psi. do you have a 40psi gauge pegged, or do you have an actual peak #? is your timing stock?
If you want that kinda power, start planning on some upgrades. first a southbend or valair, then start planning on head studs if you wanna put a turbo on it and run that hard.

IMHO.

jrad989 07-25-2010 08:04 PM

40 psi is more of a problem with a stock HG then the safety of the turbo. HX35 are solid and take a lotta punishment. Problem is above 35 psi they are not helping make power so there is no point. Head studs and clutch my friend.

94 12valve 07-25-2010 09:09 PM

for a dual disk there is a slight increase in pedal pressure if you upgrade the hydro as well

cummins power 97 07-25-2010 09:22 PM

i got a super b turbo i can push 50 psi. when i had my hx35 i could almosn get 40 psi. i have talk to alot of diesel shops in tn and they said you could push 40 psi without and head studs

Heaterguy 07-25-2010 09:49 PM

it read 42-43psi on a 60 lb gauge, my timing is stock, anyone know of any shopts in ct that will time a cummins, not to many diesel shops that i know of around here..

wes-cummins 07-25-2010 11:54 PM

back off on the boost elbow some, there should be a little allen screw

Heaterguy 07-26-2010 04:23 PM

ok my boost elbow isnt adjustable.....its a solid piece. Also would i be able to install head studs w/o pulling the head and disturbing the gasket? or is that just a bad idea..?

94 12valve 07-26-2010 04:38 PM

you can, pull one head bolt and replace it with a stud, and so one and so on

oglejust 07-26-2010 04:41 PM

u can do them 1 at a time.. ull have 2 have the 6 that hold the rocker pedistals off at the same time so u can get them milled. or bbd performance (sponsor on this forum) sells the studs and rocker pedistals already milled and u can do them 1 at a time like that.

12valvecory 07-26-2010 10:44 PM

this may not be the best advice but a new a kid that peaked out his dodge on a 60PSI gauge with no head studs and a hx35turbo the only problem was that he went through about 4 turbos so u can run higher but at ur own risk.

Heaterguy 07-27-2010 06:14 AM

whats a safe boost pressure that shouldnt bother the hg? , since studs arent in the budget right now because I need a clutch soon.

glfredrick 07-27-2010 07:41 AM

35 to 38 max.


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