DV's
 

what would be the best set of delivery valves for my 94 12v with the power i have

Probably 181s. Your makeing 50psi with that much fuel?

ya she is set at 50 just to be safe from blowing the head

your still playing on borrowed time at 50

the stock head is rated at 55PSI so im not woried

not so much the head its the headgasket

thats also rated for 55PSI

Where did you get that info from? I only ask because my head gasket blew at 40psi.

me and my buddie are in a 2nd year diesel mechanic program and know from experience and i red it in one of the diesel power mags a few months ago

Its usually not so much the hg blowing out as much as it is the head lifting becuase the bolts arent strong enough.

thats exactly what it is thats why the recomend new head studs. hg's can blow from a number of things ive even seen them blow at 20PSI some at 55PSI,35PSI and on so its not much the hg but that still plays a roll

miles makes a difference too they don't get stronger as they get older.

I'm running 191's in my truck and I really like them. My truck is set up hotter than yours is, but I think you would like them.

You are for sure going to blow your head gasket at 50 lbs. The stock head bolts cant take that much pressure. They will stretch and you HG WILL blow. look at DDP DV's. they are supposed to make about 20 HP more than 191's and with less smoke, and less egts.

Amen on that.

what the hell are you talking about i aint from california i want more smoke not less

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about the blowing head gaket at 50PSI i wouldnt be so sure about that my budie is pushing 58PSI through his stock head gasket it hasnt blown

hes definatley runnin on borrowed time.

X2

and back to the original question id say go with 181's or 191's. those will be plenty for your truck.

Adam

i was planning on the 191's once spring hits

the 191's will give you a good bit of smoke. just relly gotta keep an eye on the egt's.

Adam

ya i will hopefully that HX40 i will end up getting will help it cool down a bit more

Dont worry about the 50 psi. To many naysayers. I have been set at 50 for three years and I have 255K miles on my truck. The key is letting the truck come up to temp before rodding on it. Your main issue is 50 psi on a stock turbo. 36 psi or so is all a HX35 is good for any more than that and your blowing a bunch of hot air.. Save the money you are gonna spend on DVs and get a bigger turbo like a 62/14 or 64/12. Set is at 40 psi then add Dvs.

i dont really need anything that big though HX40 is all i really need

Hate to tell ya dude but your current fueling levels are gonna tax a HX 40. Now you wanna add some DVs?.. Trust me Ive been there done that already..

im thinking about an HX40 and a Phat shaft 62 twin setup

huh? a 40 over a 62?

borrowed time.. What school do you attend?

the advance diesel program at North Idaho College

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id do the HX40 for the small one and the Phat shaft 62 as the big one

Wont work to well, you wont be gaining anything..
Hx 40 are a 60mm inducer and you would be driving a 62mm. I believe Ht3bs have between a 68 and 72mm inducer .
I'll try to find some info on that hx 60..

no really, with your fuel, you can spool a 62 just fine, and that's the main purpose of a twin setup, use a small turbo and a big one, so you can spool the biggun...but give it a shot.

just the word twins sounds awsome and when you pop the hood it looks sweet

Try a 62 over like a s400 then your talkin. Your drive pressures have to be getting up there too which will add to the falure of the HG.

ya i hear ya on that

my head gasket just blew with a wastegated housing keeping it under 28psi, the shop that's going to do the gasket, studs and porting said he changes several 12v 1st and 2nd gen gaskets a year on bone stock trucks. it's a matter of WHEN the head warps and WHEN the bolts stretch, allowing the old gasket some room to frey/move; high boost and drive pressure only multiplies the odds of WHEN the head gasket WILL blow out. like everyone said, you and your buddy are on borrowed time.
a good technical/vocational school will teach you 'how to learn' and admit that there's no way they can possibly teach you everything you need to know about your career field.

you decide what you want to go with for a turbo? I haven't heard many good things about the HX40's lasting very long; there's a reason you can get ahold of 'em pretty cheap, you get what you pay for. if I had a nickel for every time I've heard running an HX40 is fine as long as you have a spare in your toolbox/bed...

well i ended up going with the phat shaft 62/14 and im currently pushing 53psi with a stock headgasket and 264,000 miles on her

How about a pic of that beautiful Turbo

:pca1:

its snowing and pissing rain today but as soon as we get a sunny day ill snap a quick pic, the one i took the other day looks like crap on my phone