Log in

View Full Version : Boring question


Blacdout96
10-12-2011, 11:18 AM
A few years back I had my block bored .030 over for my 3.8 project. I had pistons ordered in for that , buy came as .75mm. Now .030 in metric is .7619, and .75mm is .0295. Will my Pistons be compatible with the boring size I gotten, or is that too large. It's not that big of a deal, worse come to worse, I'll have Ductile sleeves pressed in and have it bored to the appropriate sizing, hell I just might even do that anyway, but it's something that is on my mind at this moment, and wondering if anybody ahs any input on this. thanks.

sweetbmxrider
10-12-2011, 11:40 AM
Wouldn't the ring take up that gap?

Blacdout96
10-12-2011, 11:45 AM
That's what I'm assuming, I just wanted to make sure there isn't too much clearance between the piston and cylinder wall that may give me piston slap.

sweetbmxrider
10-12-2011, 12:19 PM
I would measure the pistons themselves. I'm no engine builder but that seems pretty tight. Google it even, there are answers on the internets.