Fred's 2375 Rebuild Thread Options

[friethmiller]

[A softball question for the Ninja and/or others]

This is the cam card that came with my 2357 engine, which was originally built by Rimco/Fat (long block) a few years ago. Can someone explain why with an intake/exhaust of 448, the lift was only set to 327 degrees? I'm about to rebuild my motor and a lot of focus will be directed at piston "deck clearance" and the valve train geometry that wasn't set correctly. Thanks.

[technicalninja]

The pinning is not a big deal.

Needs to be done on a drill press but drop dead simple.

Maybe someone can link a picture. Once you see it you will understand.

Merely keeps the lower oil control ring from rotating.

Even Raby himself stated this caught him as well on his first use of this piston.

I'd only seen the SBC version before and those have a "gapless coil" ring similar to a rotolock pin retention ring. PIA to install! Prone to slice your fingers!

I sort of like the baby roll pin solution but have not built one yet.

EDIT: only install ONE of the circlips in the piston pins.
Set them up so you can pull the jug almost off the piston and remove it.
If you put the top ring back in for stability-I normally do as it makes it less likely to drop the piston out of the jug.
I use the ring to stabilize it and make it "an assembly".