CainMotorsports2102

Good deal! Hmmm, maybe get some oneunder bearings to loosen the tolerances up a bit?

ebr

Acually thats my bad I was refering to the rod side claerance not the main clearance.

CainMotorsports2102

ooooo rod side clearence is off? Hmmm, get those bearings chamferred down some more!

ebr

Yea wewill once they get back in 4 days. I just cant believe MMR is sending them back to me saying that .008 for the pair is ok, maybe for one but not two and believe me I clarified that with them and they said it was fine for a coated rod but the coating is only .001 so that is not correct the way I see it.

CainMotorsports2102

Ya, I build Mopar Big blocks and Small blocks for a living, and we use coated rods at times on select builds, .001 to .001 with a 7 is usually a good index for coated rods, but still that doesnt make up for that kinda difference, and that is definitely a very tight rod side clearance. Fir the most part our stuff, you can visually check the rod side clearance, because as long as you put the chamferred in to the outside of the main, youll get your number, and anywhere from .015-.025 is usually what we look for as well. If its tighter, we cake a few thousands off on the rod bearings.

ebr

How does taking of the rod bearings give you more side clearance?

CainMotorsports2102

Rod side clearance, the space rod to rod, crank main end to crank main end, correct?

If you chamfer the chamfered side of the rod more, then it will go side to side up on that seat furthur, thus giving you more rod side clearance. You do have the chamfered ends going the correct way right?

We have to cut all our rod bearings anyways, so we know to look out for that extra but on a coated rod, so we take a little more off when chamfering them.

CainMotorsports2102

Are the tolerances that tight on the 1-2,3-4,5-6, and 7-8 mains? Or is it just on a few of the mains? Your working in super small numbers, you can make up the digits you need easily =)

ebr

Per Manley and MMR the chamfered side has to go to the inside on this application! I know, I know but that is what they said . The rods will not even go in with the chamfered side out like this rod would install on a chevy . I wish I would have known ahead of time that Manley uses a chevey forgeing for this application.

ebr

Look at the pic in post 46 at the offset on the bottom of the rod it is a chevy rod that Manley reworks to work in the ford setup so they dont have to use a differnt forgeing and that is per Manley. The ford rods are even on both sides.