Originally Posted by
Chip
Yeah ive noticed that plenty of YB engine builders dont like them, just strange that the YB specifically has an issue when so many other iron block and ally head engines dont.
Have you any idea what about the YB causes the problems you are talking about? As like I mentioned they've been fine in engines I have built using them, in fact I have even re-used them and still not had an issue.
stop using them chip ffs
surely the fact that the top yb builders don't use them says it all
only people like yourself seem to think they are ok based on very little experience
the stretch bolt was a revolutionary design for alloy heads
studs were used in prehistoric times like the moris minor era
why people get so excited that they are throwing away a cosworth designed part specifically designed for the yb and replacing it with a morris minor head stud is beyond me
I'll start your debate and leave your brain to start up in analytical mode
The cosworth yb head has a thermal expansion rate of 17 thou form 20C to 90C