I will soon(ish) be in possession of a 2.2L long block thanks to Charles! It will need to be rebuilt which means I need to figure out how far I want to take any modifications.
My Goal: I currently have an internally stock 70 1.9l and want more power. This is my "fun" car and is used primarily for High Performance Driving Events (HPDE) at the many tracks in California. I also drive it about once a week and go on an occasional long drive. I want to get all the easy power out of the engine while keeping it reliable (aka street gas, good idle and on the easy side to maintain). If I had to put a hp goal out there I would shoot for ~150hp and a total $3k investment or less in the rebuild (I will take more if it is easy or scale back if the goal costs more than 3k). In general I only need this engine to show off its power on a race track, high up in the RPM range so I am shooting for top end HP over torque.
Parts I have:
An aluminum flywheel from the group buy
OGTS headers and a 2" exhaust.
1.9L intake modified for 2.2L head - Thinking of a 38Weber for now and tinkering with a megasquirt EFI system as a seprate prject in the future.
Upgraded ignition system (coil and converted distributor)
I have scanned the forum. In general 2.4l builds look more common and there are some important differences between it and the 2.2L. I have never done an engine build but my current thoughts are to switch to forged 1.9l rods (should be a direct replacement) and forged pistons (overkill?) in the bottom end. The top end is where I am struggling:
Should I go big valve if I am replacing the valves?
Should I bump up compression and how should I go about it (mill the head, piston dish, or deck height)?
What cam and where to get it?