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]

Those might not be JE pistons!

I have 2 new sets, Stroker 3.0l L28 Z-car and a 1MM over set for a Miata BP engine.

My JEs look different than yours!

All the pictures I've found on the internet show ZERO markings on the top.

Mine are marked INSIDE the crown on the bottom.

Wisecos ARE marked on the top...

Everything "forged" I have Wiseco, JE, and Ross has much, much finer machining on the crown.

More pics of piston please! Underside, both thrust and non-thrust sides of pistons (the skirts/both sides) and a side view on pin would help.

You have a long stroke and short rods: I'm looking for excessive side loading on pistons. (Skirts will be worn)
Your bores look OK, not bedded properly but not screwed up.

LN does offer JEs flat tops with no valve relief. The pistons in this kit appear to be them. They don't look marked on the top either but it's HARD to see.
https://lnengineering.com/type-4-store/engi...orsche-kit.html