Just took my 350i Plenum Chamber off....

[keynsham]

I am in the process of fixing oil leaks on my 350i, specifically rocker covers and valley gasket. When I tool the plenum chamber off I was met with this...



Has anyone ever seen this before? I couldn't have dislodged the intakes when I removed the plenum, indeed there was no noises when I did, and the one that was completely out of its seating was a tap fit so I couldn't have moved it anyway! Also the tubes are not all a tight fit and I can easily remove them. Is this normal?

[rev-erend]

Yes, it's been reported before. Just the epoxy resin no longer holding in place.

[Classic Chim]

But your plenum base is very clean which is a very good sign so glue them back in

[Englishman]

Yes, a common issue, including my SEAC when I had a peek a few years ago. Fixed using Loctite 648.

[mk1fan]

Neatly & squarely cut off 35mm from the end of each one before resetting in place.

I found the same when I took the plenum off my 350i.

May as well as a thermal gasket underneath too.

Then a wrapped alloy elbow for the intake in lieu of the canvas tube.

Edited by mk1fan on Wednesday 5th October 18:38

[adam quantrill]

I have the proper glue for these, it's Loktite stuff, it is out of date but each bottle is sealed and still works well.

Let me know if you want one, I had this problem on the 400SX exacerbated by supercharger inlet temperatures, but the Loktite did the job.