Club 80-90 Forums

The common thinking is that prior to attempting to remove exhaust studs, one should apply PlusGas to the studs and bolts a few times during the days leading up to the actual job.

I was about to start doing this when a thought occurred to me. PlusGas is basically a light oil (with "other" stuff I suppose). If one applied it, then later on fired up the engine, perhaps the oil might "burn" in the heat around the exhaust port and actually "bake" making the stud more secure than if not "treated".

Wondering if a single application to a warm engine, then just get on with the job might be better ?

p.s. = I know heat from a gas blow torch is a big help too

p.p.s. = This is just an academic question / thought, as I am entrusting the job of fitting my new VW Speedshop exhaust to the very good garage I use in Saltney, Chester. The owner has 2 T25's and is very good with them.

Interesting dilemma. When I did mine with a Brickies as exhaust (dg) I used the 'soak it nightly in plus gas' then go easy in undoing etc and reassembled with cooper slip and stainless bolts on the knuckle. Worked fine. My guess is that if a stud is going to wind out when being undone it will do so more easily if something has already penetrated slightly along the internal threads as as the external ones. Hope it's a good job, sounds like you have some trust and comfort in knowing a decent garage!