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 Weber 34ICH conversion
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V4 Guru

United Kingdom
1785 Posts

Posted - 24 Feb 2017 :  19:31:57 Show Profile Reply with Quote
The 34ICH uses an alloy adaptor ring on the top and this usually, I think, comes with the kits. If you use that, the standard late filter housing fits perfectly. The same ring fits all of the ICH sizes, 25-27-29. FastRoad etc should have them if you don't have.
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Starting Member

36 Posts

Posted - 02 Mar 2017 :  09:18:15 Show Profile Reply with Quote
Man, it's been a while.
I got the 34 ICH mounted, but I've now been confronted with another dilemma.

The old exhaust pipe for the car was mostly rusted out, and I'd like to replace it with some new stuff. The problem is, I don't know whether to upgrade it to 2 inch, like I've seen a couple guys do, or simply replace it with 1 inch?
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V4 Fanatic

United Kingdom
258 Posts

Posted - 14 Apr 2017 :  20:38:18 Show Profile Reply with Quote
Really hard to start. Then it'd only idle with choke out. Obviously wasn't getting any fuel through the idle circuit so I removed the idle jet and the mixture screw and blew it out using a tyre pump. Put it back together and no change. Removed the idle jet, pumped more air through it and noticed some air/fuel coming out of a hole just above the idle jet. On the inlet manifold I found a little brass plug that fitted the hole. For some reason the Weber 34 ICH has a hole just above the mixture screw with a brass plug in it. I was lucky it only blew (or fell) as far as the manifold. I'd imagine an air line could blow it far far away, so I'd suggest putting some tape over it before blowing through to clear blockages. I still don't know whether it fell out and that was the original problem or whether I blew it out but either way, when I put the brass plug back in the hole it all works fine.
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