m20b28 rotating assy pics

[digger]

phew, whats the availability on the 9.4:1 slugs? i thought they were NLA like the 9.8's?

[ForcedFirebird]

dumb question, some of those slugs say 84.48 and some 83.98?

Yessir. Sorry, mix of builds. Some are over sized pistons.

[digger]

dumb question, some of those slugs say 84.48 and some 83.98?

[RobE30]

Awesome man!

[ForcedFirebird]

A little off topic, but relevant since this is the first job it's used on. Never had my own rod balancing fixture, but my friend about a mile away does. Been meaning to purchase one, but they are pricey for what they are, so grabbed some scraps of aluminum from the neighbors bin, and some skateboard bearings I keep for the kids' skateboards - made my own. His uses chains and a hanging bearing, looked at other designs and went with pendulums. The chain system is kinda cumbersome. Once this one is set up for a rod length, takes minutes to weigh them, and the bearings are universal, so the rod can be flipped easily on the scale.

[ForcedFirebird]

The pistons are early model, so long skirts need trimming.



Keep weights in check when taking so much off.

[ForcedFirebird]

.5mm over 9.4:1 early Euro pistons on 130mm rods, 84mm crank, .5mm off the block. Will result in 10.4:1 with the added stroke.

[ForcedFirebird]

I'm bad at taking pics, worse at posting projects, but do my best to help the community. Snapped some pics for a mail-order client and figured why not share here.