how much boost w/stock turbo
 

how much boost will a stock turbo produce. i have a #6 fuel plate the rest is stock. i will get fresh air intake and get rid of cat&muffler next( if it makes a differance). ?

it will go all the way to 50ish but does more harm than good, its best to wastegate them at or around 32-35psi

stock 12valve makes 15-20 boost and taking off cat adds 2.5

Yea i got 52 lbs of boost outa my old stocker but u gotta be carfeul way to much drive pressure

I was boosting around 56 psi. which was stupid on my part for doing it. I think thay can start coming apart around 40-45 psi. dont quote me on that, but it some where around there. I had wastegate plugged off with 100hp injectors, 10 plate, .093 lines, timing 16. 3k springs.

thank you; wastgate how much that gana cost? ya know its not easy to tow with this truck my 3/4 ton 454 get in & tow ,w/dodge need more power, then be carefull trans cant take it, must have guages ,cooling system needs modification for towing. man i love my truck but using it as a truck.? if i can figure out a solution to the cooling sys.ill be once again happy me,dog 5th wheel,& dodge anywhere but vegas.

banks big head wastegate is like 400-500 & couple of guys i know say its worth the money

i got my banks big head for 182 its worth it

just get a boost elbow they are only 20 bucks or so

I second the boost elbow, does the job for cheap. :rocking:

where did you guys get your elbows?

Mine was actually on the truck when I bought it. I would either check with a vender here or eBay. http://item.mobileweb.ebay.com/viewi...d=300444737856

thanks bud $20 ill roll up some quarters an get one.need a cheep fix on my everything replaced & cleaned over heating while towing my 5th problem!

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thanks 20$ Ill roll up sum quarters n get one.need a cheep fix for my overheating while towing everything replaced & cleaned problem that is keepin me from leavin las vegas 4 fun!:argh::argh::argh:

The most i have seen on a stock 12 valve turbo is 42 psi, and the head gasket blew within a month. At that much boost, as stated above, it does more harm than good.

thanks matt, im going to get a boost elbo or make one.larger head studs&o-ringed head would be needed to handle more than 35 psi boost correct ?just lerning here thanks again.

I would say 35 psi is a safe efficient number for stock turbo, gasket, and studs. I have definitely seen people get away with much more than that though...

i was running 38 w bolts and no fuel plate and no problems pm me if u want info

well i got guages opperating except for trans ,need a t - fitting . i had rad emty to put in new stat but wanted to check guagaes . i filled it 3/4 test drove for readings . i got 30 boost wot no load 1200deg. egt in 1/4 mi ,at idle 280 or 380 i forgot. well i also got foam in rad bad head gasget i supose.coolant settled out dark brown to light br to green coolant.funny thing is w/ rad full i get no foam.any body know a good place in vegas for serfacing,o-ring install,valve seat &core crack check ?whats a good head gasget to use& studs.any dirrections or tips for removal and install ? thanksn have a nice day carl

i hit about 30 in the 2 1998s i drive and about 38 in my 93 with hx35

i have been trying to figure out how much more boost a hx-40 witha big head waste gate will produce compared to the lasts one, and is there any way t adjusts the waste gate instead of just simply blocking it off?

20-25 stock

better to get an s300 turbo with a better wastegate and better flowing exhaust housing. There is no reason to turn up an hx35 to over 32psi as the air cannot get out easily. You end up with a pressurized box because the WG on the hx35 sucks (only wastgates 3 cylinders) and then it is further blocked by the back plate before it goes into the downpipe.

they say no more than 45psi with stock turbo:scare2:

I'm supposed to be doing the head gasket this weekend (if I can find one), I have a thread right now going wondering if Felpro gaskets are acceptable substitutes for Cummins ones if you can't get OEM.. I am running the stock turbo at about 30-35 PSI, though I usually have to back my foot out of it if I have a heavy trailer and big hills.. if I'm not towing over 4 ton it's not a problem though. I am really looking for a SuperB turbo though so I can comfortably put 40PSI into it without it coming apart