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]

I MAY have a close machine shop.

Replacing everything is NOT the answer!

Here, I'm going to be cheaper than you!

New rings from JE, have jugs platue honed at the proper finish for the JE rings as long as P-W clearance is ok (forged can take a bunch of clearance before failure).

Crank micro-polished (maybe) and balanced.

I would guess the case needs line boring from the weird bearing wear.

I'd ceramic coat the piston crowns/combustion chambers/exhaust port/exhaust valve (both sides) and face of the intake valve. I'd do this myself and not send then out. A "sacrificial" oven will be involved with this process. Search Craigslist. T4 heads will fit fine in what's available.
I'm hunting a BIG oven as I want to the able to do Datsun 6s too and they don't fit in anything...

But I wouldn't do anything until I had decided on a cam profile and verified Piston to Valve clearance first.
It IS possible to have a forged piston machined for valve pockets.

Now, everything regarding the cam drive needs to be NEW!
I'd probably try and re-use the rest of what you have now.

Running all of this by the guys at LN would be one of my first steps!

In a PM conversation with another member, he came up with "Just sending his stuff to LN." which has merit.