ok..Rther than explain all this. I stole this thread from another web-site.... I wish I would of read this prior to my problem and fix...but it is good to know we discovered the same thing.
The B&M shifter is held in by two larger hex head bolts and two smaller normal bolts. The larger bolts go through the B&M shifter, then the stock base and finaly screw into the transmission, right? Well sort of … here’s the order again with a bit more detail:
1) Larger hex head bolt
2) B&M shifter
3) Metal sleeve / washer
4) Rubber washer
5) Stock base
6) Infamous gasket (rips, tears, etc.)
In stock form #1 contacts the top of #3. #3 then contacts #7. #4 allows #5 to “float” snugly against #6. When the bolt is tightened down, #3 prevents #5 from pressing #6 against #7 so hard that … you guessed it … #6 tears.
Now the fun part. Add #2 to the mix. Note that #3 is recessed into a hole in #5. Tighten the bolt. The bolt presses against #2 which presses against #5 which presses #6 against #7 much harder than before … bam … instant cut gasket.
If you repeat the above with the rubber gasket removed and RTV in it’s place the car won’t shift to boot!!!!!
My quick solution was to add two washers between #2 and #3 for each larger hex head bolt. This seems to have solved the problem. My only concern is that I messed with the thing for 3 hours. I hope that the silicon was pliable enough to not tear after being compressed and then lifted. I’ll drive it Wednesday morning and see. The stuff needs 24 hours to cure.