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Thread: Welding external WG onto stock manifold?

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Posts: 21-30 of 30
2012-04-04 19:19:44
#21
not enough to say oo jeeze my ass dyno is saying 10 more hp
2012-04-04 20:39:39
#22
lmfao^^^^
2012-04-04 23:20:43
#23
Originally Posted by Keo
that manifold has been around and finally got used!


Originally Posted by wnwright
YAY... So it sat around for what 4 years?





am i the first to use it in this form? that paint it still burning off.. lol
2012-04-05 00:43:34
#24
Originally Posted by lynchfourtwenty
am i the first to use it in this form? that paint it still burning off.. lol


Nope I used it for a year or so. Last time I saw it somebody had cut up the downpipe some... So I imagine it has been repainted.

IIRC 3071R .64a/r 12psi ~350whp flat from ~4500-9000rpm... That was my make the biggest flat powerband build dyno
2012-04-05 00:45:11
#25
yea the dp got chopped a bunch before i got it, but i made use of it



Last edited by lynchfourtwenty on 2012-04-05 at 00-55-59.
2012-04-05 03:47:52
#26
Originally Posted by gomba
I am using an Avenir. What are the advantages to the GTI-R manifold? That would require a DP flange re-adjustment, no? Nothing gets out ASAP. Like I said, even the bellmouth are 5-6 week wait.



Oddly enough, this is what A.Miko says as the VET seems to share the same housing as my 2871 you can also see what I mean by the divider not coming all the way up:

http://www.sr20-forum.com/174571-post134.html

Actually, mine is a little different:



Is this what you mean by the divider wall coming all the way up? This is a pic of a GT3076R I have.

2012-04-05 04:32:13
#27
Ya, that's a nice housing, definitely comes all the way to the top
2012-04-05 10:57:51
#28
ive done this job before

before welding
i highly recommend preheating the cast iron before welding
dont try and lay on one big single bead
u want to lay down multiple beads ontop of each other as it heaps post-heat
so lay down one small bead then let it cool down to the point u can touch the manifold with your hand then lay down another bead ontop of the bead u already welded

when cooling do not dip the manifold in water to cool down
let the manifold cool down over night on its own
u want it to cool down slowly

one i gone a while back

2012-08-02 22:36:43
#29
I'm sorry I didn't read this entire thread but it's done on my setup. Stainless pipe welded to the cast Avenir manifold. A master welder hooked me up. It cracked initially, he redid it, it's been solid ever since for roughly 20k miles. From the research I did, the manifold is to be heated in an oven to around 600*. Weld the parts together, then place back in 600* oven and turn off. Allow to slow cool on its own in the oven.
2012-08-02 22:57:25
#30
I welded a WB flange to my stock mani. I use a regular wire feed welder. Key is to control the heat. I "trigger" welded(weld, slight pause, weld, slight pause, etc.) the flange on. I did also use an oven to warm the manifold to 350, welded and then let sit on 350 again for an hour and then left it sit in the oven over night. It never cracked and I used it for awhile. This may have not been the best way to weld it, but it worked great and the weld had good penetration and did not crack.
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