steven74

Always nice to see a car come together.

Noahs944

Here's some pics of someone else's 78 924, which was at the last TSD rally.

Noahs944

I am getting excited to work on Gramps It's been a long time since that was the case... or come to think about it, I think this is the FIRST time I have been excited.

I admit to have fallen a bit in love with the car. I like lowered 924s... they remind me a alligators or salamanders with their bellies pressed to the floor.

I have some 30mm lowering springs which tempt me, but I must resist for the time being. Or should I? The car comes with 14mm and 23 mm sway bars and the Sach shocks are relatively new.

Part of my reason for resisting the lowering is because it's ALREADY a low car. I am addicted to gravel roads & well... sometimes it snows a lot here, so factory ride height is probably the best.

Noahs944

Noahs944 wrote:
Question: if you wanted to up the compression to say 11.5:1 (using stock pistons), is this possible on the na 2.0l by merely shaving the head, or is shaving the block required?


Ideola says "DO NOT shave the head! The NA head is a heron style head, meaning it is flat, with no combustion chamber in the head itself. You will not gain a single point of compression by shaving the head, you will only affect your ability to properly tension the timing belt.

Have you seen my compression ratio calculator?
http://garage.ideola.com/top-DL-Comp...RatioCalc.html

If you start with US-spec long block from 1980-82, you have 9.0:1 CR pistons to start with. Assuming you don't want to go to the expense of finding Euro-spec pistons, or swapping in something aftermarket or custom, this is your best starting point.

You can gain another 0.4 points of compression by using a Cometic .027" head gasket.

If you take the block down to 230.0mm, you gain 2 whole points of compression, so that would put you at 11.4:1.

So that's how you do it.

If you remove that much material from the block, you should consider an adjustable cam gear to dial in cam timing."

Noahs944