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]

Changing cam in a T4 means "all the way down".

I'd do a bunch of little tests BEFORE teardown.

I'd properly tune what you have FIRST!

You running a WB yet?

No way I'd make big ass changes before I knew exactly what I wanted to improve.

I'd have 1 or 2 WBs (depending on exhaust). CHTs on all plugs (for testing, for daily use just one under #3) and EGT (prefer 4 during provisioning).
Knock sensors on both banks.

I'd be stand-alone FI as well. COP, Sequential with 1000cc injectors. Center of injection pulse timed to intake lobe centerline. Only inject into a moving airstream!

I'd want to be able to internally log a bunch of stuff

And after a major amount of tuning, I'd be ecstatic with 200...

Which IS SAD!

The base Boxster I have (2.5L) has 200 stock!