Type 4 Exhaust Stub J pipes

[relentless12]

I need some Type 4 Stub J pipes... I'm building an exhaust system and having trouble locating them! Are there any exhaust vendors out there that can supply ready made or do they have to be custom made?

Ron

[wildthings]

You need to find a set of 411/412 heat exchangers and then cut off the covers.

[sideshow]

Never used them but EMW offers;

http://www.europeanmotorworks.com/pvw/2 ... eplacement

[Piledriver]

If you want to make a set of T4 stubs, IIRC I (think I...) posted a how-to awhile back.

Short version:
1.5" tube, ~3.5" long, cut along length halfway down center w/bandsaw. SS is good to keep heat out of the heads, mild steel exhaust pipe less prone to crack.

Put cut across a vise and squeeze end (last 1/2") until you get the perfect oval fit to head.
Weld now mostly closed up cuts, tack/weld some tubing or ears on, weld on flanges, finish on belt sander, done.

Obviously jigs would be nice, but you have a set of tapered 1.5" stubs in ~30 minutes.

You can step the size up at the flanges.

[t4vwbugster]

OK - I understand the construction of the stubbies - one more question, the sealing edge: should it be rounded, rolled, flattened or just left as is? I believe it is supposed to get a copper ring in there to seal?

Sorry for all the questions - I also need to make some stub pipes this monday.

Mario

[wildthings]

Flatten the mating surface with a large bastard file so that the two pipes are perfectly aligned with one another. Then go back and lightly file the outer edge so that it is no longer sharp.

[mrblyoung]

if not wanting to make them A.J. Sims makes the flanges. Just construct your header off of them...

http://www.thesamba.com/vw/classifieds/ ... ?id=739156

[craigvwdude]

those are spendy!

[Piledriver]

Spendy, but a lot less so than the other stubs commercially available.

Those look nice, another lister was trying to make some awhile back but couldn't get the fact that there was a left and right stub... T4 ex stud offset differs.

If you are in a position where you need early HX but have late squareports, these are a possibility.

[Piledriver]

OK - I understand the construction of the stubbies - one more question, the sealing edge: should it be rounded, rolled, flattened or just left as is? I believe it is supposed to get a copper ring in there to seal?

Sorry for all the questions - I also need to make some stub pipes this monday.

Mario

How did it go?

[Type 4 Unleashed]

Spendy, but a lot less so than the other stubs commercially available.

Those look nice, another lister was trying to make some awhile back but couldn't get the fact that there was a left and right stub... T4 ex stud offset differs.

If you are in a position where you need early HX but have late square ports, these are a possibility.

Actually The Stub Pipes from George Narbel @ European Racing Headers sells his stub pipes separately and those are complete ready to bolt on for around $150 ? It has been a while since I bought a set, and where cheaper then, I guessamated his increase... ... But still reasonable.

[Piledriver]

Spendy, but a lot less so than the other stubs commercially available.

Those look nice, another lister was trying to make some awhile back but couldn't get the fact that there was a left and right stub... T4 ex stud offset differs.

If you are in a position where you need early HX but have late square ports, these are a possibility.

Actually The Stub Pipes from George Narbel @ European Racing Headers sells his stub pipes separately and those are complete ready to bolt on for around $150 ? It has been a while since I bought a set, and where cheaper then, I guessamated his increase... ... But still reasonable.

Ah, good, I keep thinking of the ones from ...someone else, awesome quality assured, but the price is still stuck in my mind like a splinter...

[DWP]

here"s an idea for you
http://www.germanlook.net/forums/showthread.php?t=10540

another option is an old exhaust from the porsche people cut and weld
search the 914 forums and pelican parts

Dave