Hot pipe question

ETH/DEE

ETH/DEE

Fick mich
Joined
Dec 10, 2007
Messages
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I want to build a s300/s400 twins set this winter and my only question so far is.... what material should I use for the hotpipe? I see that alot of people use schedule 40 pipe and was wondering if i should do the same. (4" short 90*?) Most of the home fabbed twins Ive seen have used what it looks to be is regular exhaust tubing. Also, could I use the v-band flange from my HX-40 for the hot pipe?(yea Im that cheap) Id like to use Rips primary mount since it incorporates the oil-drain, so that will decide the location of the large compressor....

Any help is greatly appreciated.

Aaron
 
I used a 3" shcedule 40 elbow for my hot pipe. I used this because I was concerned that exhaust pipe wouldn't last. You might be able to reuse the flange of you downpipe, but why not sell the downpipe to help fund the project?
Joe
 
I just used 3" exhaust pipe, since it is taking none of the weight of the turbos. I don't see why there would be longevity issues with it. Mine is ceramic coated inside and out as well.

Is your HX40 pipe stainless or mild steel? My first HX40 flange was low grade stainless, cracked all the time, had to get a mild steel flange from Rip to weld it properly.
 
Use schedule 40 stainless or regular black pipe, either will work. You can heat wrap it, coat it, do both, or leave it bare your choice.
 
i'm gonna try and use the 4" exhaust pipe too. i'm like you aaron, trying to do it on the cheap. if it break it breaks, i'll know what doesn't work lol. i'm going to use the flange off an 06 dodge downpipe and have a buddy cut me the t4 flange. matter of fact i'm gonna use 4" exhaust pipes for all the plumbing b/c i have tons of it laying around.
 
Thanks for the help guys, I think I will end up using either 3.5 or 4" exhaust tubing. Most of the kits ive been looking at seem to use a 4inch elbow.

Thanks again.
 
I used 316L Sch. 10 stainless for all of my hot pipe work. Much better resistance to heat-cycle fatigue than even Sch. 40 mild steel. 2000* ceramic coated inside and out. Should out last the turbo housings LOL

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Where does the pipe that goes to the left go to and what is it for? I get the external gate dumping into the primary.... but where does that second pipe go to?
 
I never get tired of looking at those pipes Don.

We put together a hot pipe. Ductile iron, 3/8" thick min with 1/2" walls in the hot corners. Wastegate in and out.
 

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SINNER said:
I used 316L Sch. 10 stainless for all of my hot pipe work. Much better resistance to heat-cycle fatigue than even Sch. 40 mild steel. 2000* ceramic coated inside and out. Should out last the turbo housings LOL

IMG_4378.jpg


IMG_43521.jpg


1014081946b.jpg
Click to expand...



nice layout..shouldve cup walked it tho..couldve done better weldiing it
 
carfichris said:
I never get tired of looking at those pipes Don.

We put together a hot pipe. Ductile iron, 3/8" thick min with 1/2" walls in the hot corners. Wastegate in and out.
Click to expand...
:aiwebs_013: :aiwebs_016:

:drool1: :drool1: :drool1: :drool1: :drool1: :drool1: :drool1:
 
dieselbeef said:
nice layout..shouldve cup walked it tho..couldve done better weldiing it
Click to expand...
I don't know, I think it looks pretty good for someone that doesn't do any kind of welding for a living. What he has there most people would not even attempt.
 
oh yeah...didnt know it was a home fab job...it fits and flows real well. just thought it would look nicer polished.....if it wasnt paid for then it looks sweet
 
SINNER said:
I used 316L Sch. 10 stainless for all of my hot pipe work. Much better resistance to heat-cycle fatigue than even Sch. 40 mild steel. 2000* ceramic coated inside and out. Should out last the turbo housings LOL

IMG_4378.jpg


IMG_43521.jpg


1014081946b.jpg
Click to expand...

Where did you get the s400 exhaust inlet flange at? I dig the round entrance so you don't have to squash the pipe
 
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