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D2 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again

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  #11  
Old 20th November 2020, 10:02 PM
strummagnet strummagnet is offline
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Quote:
Originally Posted by MikkiJayne View Post
That appears to have a 1700mm cable, but looks like a standard 4-pin connector so it ought to work in both positions. You'll just need to tie up the extra 1200mm for the pre-cat sensors.
Thanks MJ. I was going round in circles trying to source specific components.
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  #12  
Old 29th November 2020, 05:25 PM
strummagnet strummagnet is offline
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Originally Posted by B@fink View Post
Interesting seeing the difference between the years.

But looking at your pictures that could be because the down pipe has no supporting mount (like yours has after the cat) and a flexible pipe at the manifold joint so it moves more and pulls the pipe joint.
The 'U's were a later 'addition', the original setup had flanges that were shot through so it was decided at the time of fitting that the best course was to cut and connect with U Joints. Not my best decision. There is a mounting point adjacent to the gearbox support on each side for the downpipes. I am now replacing the downpipes (as there was no cat stuff inside them) with units sourced from BM Catalysts as originals seem to be as rare as rocking horse doodoo.

Now it leads me on to another question. On fitting the new cat/downpipe I have noticed there is only approx 10mm clearance between the pipe and the epdm cover of the gearbox support mount, as picture. I checked with the original and there was a bit more - approx 15mm clearance. I am concerned there is not enought clearance between the downpipe and the gearbox support mount with regard to heat dissipation affecting it. Any advice?

Update to this: Transpired the first downpipe that I thought was from BM catalysts (bought through a third party) had been modified - bent out of the original shape - so I was on to a loser from the start. Purchase of another 'original unmolested' resulted in enough clearance. No further issue.
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Daily Driver: BMW 3 series GT - Just more practical for my camping trips!

Last edited by strummagnet; 4th April 2022 at 12:40 PM. Reason: Issue resolved
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