hx35 swap
 

i just picked up an hx35 off of a 1996 5 speed truck. it only has 99xxx miles on it but i do not know the exact size of the exhaust housing from a manual tranny truck. is it 16cm? and how much boost psi is safe to run through this turbo? just picked it up for 150$ so i cannot complain, eventually gonna do a hx40 hybrid.

All dodge p-pump engines I know of came with 12cm turbine housings

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And I'm not necessarily saying its a good idea but I've seen several guys run 60 psi continually and not hurt the hx35

If its from a 94 to 98 12 valve it will have a 16cm, if its from a 98.5 to 02 24 valve it will have a 12cm, also I would not suggest hitting over 40 pounds unless you got head studs and a head gasket that can handle it

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I never heard of a hx 35 on an dodge that had 16 housing lets see a pic of said housing

all hx35 and wh1c i have ever seen or read about have 12cm housings the hx40's have 16cm housings. and safe psi is 35 i would LOVE to see 60psi on a 35 saftey glasses and a bullet proof jock strap! LOL

I have seen 60 psi out of a 35 in my 99 that has a 96 12valve in it going up the mountain I have seen 1600+ degrees and 60lbs I just pulled it this winter and sold it to a local machine shop that made a 35 40 hybrid out of it and is using it. I think I had a good one :yeah:

what a lucky SOB. the efficiency range is maxed in the mid 30's that poor poor little hx bet it sounded cool

It sure did scream and yes it was way past its efficiency range

i never said it DEFFINATELY had a 16cm housing just asking if thats what it had. i will post pics later and pics of the swap. a i going to need anything besides a gasket between the turbo and manifold?

It will have a 12CM waste gated housing. All HX35's n WH1C's had a 12cm waste gated housing. hy35's had a 9CM waist gated housing.

I did the swap on mine yesterday cuz I had it to try n help with EGT's till I get a bigger one to help with the big injectors. I reused the gasket between the manifold n housing, it's just a flat piece of tin.

ok thats all i was conserned about but how much diffrence in the EGTS at WOT??

I think about 200* if I remember right.

thats pretty good will probably be more for me im still running stock injectors until this summer im gonna do 5x.012s

I'm running 5x12's n like em.

are they smokey and do i need to do a different down pipe for the hx35?

They give a cloud then clear up if you lay into it but if you roll into it she barely hazes. Not as long as it came off a 12V. if it's off a 12v just push the pipe back half an inch n your set then figure out the waste gate line or do like I did n ran the old non waste gated housing off my h1c but mines a 16cm housing. if it's off a 24v you gotta run the old exhaust housing off your H1C.

i have an hx35 off of a 1996 wich is a 12v and can i just block off the gate? and how much difference in power did you see from the 5x12's? juts want a rough estimate of what i will kake on a dyno.

DO NOT BLOCK OFF THE GATE!!!!!!!!!!!!!!!!!!!!!!!!!! FOR GODS SAKE RUN A FREAKIN REFERENCE LINE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:scare2:

Whats wrong with that????!!!!

because the drive pressures go through the roof! you will drastically shorten the life of the turbo and you run the risk of lifting the head off the block. (from boost in the exhaust for a lack of better words) you can get the EXACT same performance the right and safe way and run a gate. people that recomend running like this for anything other than test purposes to get measurments are just hugely missinformed.

the stock H1C had an exhaust housing you could put your arm in up to your elbow! it was near impossible to make the correct pressures hence why the sucked so bad. wastegates dont limit boost they limit PRESSURE, in the exhaust manifold, that is backing up to your head.

hope that is somewhat enlightening...

Dunno how much difference in performance from stock sticks but there supposed to be a 90-100 horse increase injector. I'm running my hx35 with my non waste gated housing off the old H1C because the 12cm is to small for my mods.

I guess I'm still not enlightened:tttt:

What?

i know exactly what you mean i will not block off the gate, i wanna run on the safe side!

very glad you understand why a gate is part of a system for a reason. run the 12cm housing. a hx35 is good to the mid 350hpish range with very good responce.

So why do they make non waste gated housing that are the same size You are no longer using it for what it was designed for by making more power

because they are much bigger turbos and your engine cant over pressurize it like the 21 and 18cm housings on the H1C's OR like how i run on my sandrail you have an external gate. on twins there normally isnt a gate on the large turbo the little one does all the bleeding pressure off. you have to have a fail safe to have any hope of reliability. yes you will make more boost on a stock truck with the gate nonfunctional but you can make the exact same or damn near to it by limiting or slowing down the signal to the gate.

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and just because its a 12 or 14 or 16cm housing doesnt mean its the same size housing. will the 12cm housing from your hx35 fit on a phatshaft 62/65/12???? absolutly not its the same as trim. a 60trim t3garrett is way smaller than a 60 trim t4garrett but its the same number... it is in relation to the size of the wheel and so on and so forth.

On a twin set the little one should be waste gated into the big one at a certain point so its not a restriction

On a single app At some point the 35 will run out of its efficiency range but if the gate is opening I'm wasting energy until it gets to hot (I haven't found the spot yet) And if your to stupid not to let out of it before it pops then i guess that's what happens I have seen 60 lbs out of a 35 at 1600 degrees And haven't popped one yet

This is with a 12 cm housing with the waste gate blocked tight:c:

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Yes I understand Like for instance a hx 52 with an 11 cm housing is much bigger inside than a 35 12cm housing that isn't what I meant but anyways

cant argue will a fool... have a wonderful day.

That's sorta what I was thinking but I wasn't going to say it:c:

Easy guys, it sounds like the point that 2332 is trying to make is that the turbo may not be exactly what is in danger. He is worried about over pressurizing the exhaust side and therefore back pressurizing the engine causing head gaskets or worse bolts to fail.

So I'm pretty confused, what does it take to bolt on a hx35 off of a 96 to a 90 non-intercooled. Also what about the 4" downpipe- would you want to buy one for a 1st gen or second gen?

The exhaust flange is the same 3inch vband On 1st and 2nd gens unless it says its a hx40 inch vband then its true 4inch you want a first gen set up. And youd need to clock the turbo and either use a 2.5 inch to 3inch coupler to hook to the crossover pipe or make your own

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the HX35 and H1C flanges are different. the h35 is a 2 bolt flange that you have to use with the factory cast elbow with that came on the turbo. the H1C is a 3 inch v band and the hx40 style is a 4 inch v band. cooler tubz makes a crossover pipe for a non intercooled to hx35.

Not a 12v hx35..... its the same 3inch v band.
24v had that setup and he said he has a 96...:screwy:

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http://img.tapatalk.com/aefc7a98-aac8-b2d7.jpg
96 hx35.....

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hu.... my 95 had the 2 bolt flange. however it has been awhile since i looked at how the cast elbow was attached which is missing from your pic

Thats because it unbolts from the back of the turbo....

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The 35 u have there does not have a 3" flange, it's more like a 2.5". Now before u jump all over me on this one consider how they are sized. A 3" vband flange fits OVER a 3" pipe and measures roughly 4" on the biggest part that the clamp fits over. If u don't believe me go to any performance web site and order a 3" flange and clamp and try to fit it up to Ur turbo like as if to use it to make a custom down pipe and let me know how u make out. Oh and likewise, the hx40 has never had a "true" 4" flange. It is commonly referred to as a 3.75. Should be the same as a gt35. It's a weird size. Don't ask me y they had to do seemingly stupid things like this but unfortunately that's just how it is.

Id of the clamp is 3inch thats how they are measured not the outside diameter the h1c wh1c and hx35 can fit the same flange. The hx35 might be slighty smaller but it still can be made to work

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