Bored out to 30 over, what does a bigger bore exactly do? Make more power?
Balanced & polished, running standard bearings for both main and rod journals
Head was line bored 30 over and camshaft welded and grinded to 30 over
Is this scratch gonna be a problem? This happened to 3 out of 4 pistons I have, not exactly sure how they were fine when the rods were connected and since then has just been sitting in a box.
Also how do you get off the valve cover seals off a d16z6? Sounds like a stupid question but ive tried everything, prying, sodablast..it jsut wont come off.
Crabloc93 wrote:Bored out to 30 over, what does a bigger bore exactly do? Make more power?
It will increase displacement ever so slightly, but it's usually done on higher mileage blocks because the cylinder walls are slightly out of round from wear, or have some deep scratches. Removing the material brings the slight oval back to a perfect circle and provides an even surface before honing.
I had my z6 bored .020 which brought the dia from 75 to 75.5mm, so I'm not sure where you're at.
Nice pics, I love seeing fresh machine work
I wouldn't be too worried about the scratch on the face of the piston. They'll be covered in carbon after a while. You could probably wet sand it down if they really bothered you.