Vintage Mustang Forums banner
1 - 1 of 16 Posts

· Registered
2,155 Posts
What grit did the machine shop hone to? If the hone is too course on these little import engines, they will do exactly this. These fine little oil scrapers love to hang on course hone marks. BTW, have you checked the end clearence of the oil rings?

Do yourself a favor and don't hammer on the pistons very hard, (you knew that........*G*), even with the back of a hammer handle. Use somthing soft like a shop rag folded up and a block of wood and tap on the block of wood when you get back to that point.

When they are right, they will go in, even if they are a little sticky.

Try going over the bores with a red scotchbrite pad and some WD-40 to break the edges of their hone marks. Also, have you tried other cylinders to see if the problem is the same?

Think about it this way.......... If you were trying to make the piston stick you would likely put course hone marks and then use the finest little rings you could find.......*G*. The machine shop likely ran a "bottle brush" hone down the cylinders and called it good. That is too course. You may need to re-hone with a fine stone hone and try again. First try the scotchbrite trick.

Love hard, drive fast, wear your seat belt.

PS, that's my 'bird...... My Mustang is too ugly to take pictures of yet........*G*.
1 - 1 of 16 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.