22-08-2012, 08:32 PM
(22-08-2012, 08:26 PM)Dan! Wrote: Mindfuck. What you are describing is pretty much impossible mate. If 20mm is only just nipping up then 25mm should be fine, how can a stud be too long, the extra thread will just come out the back of the nut...
The 25's without the extra nut don't go in enough to press against the gasket. With a nut on it just spins freely/loosely once all the way in.
20's go all the way in to the gasket but dont nip up tight.
15's are too short (almost to even reach the threads in the block).
I guess you could get some 22.5's but my local "Nuts & Bolts" specialist only does them in increments of 5.
Guess I could just stick a load more washers on the 25's.
It might not even be leaking to be fair.