Author Topic: Stock compression ratio on 2.3 (Read 5223 times)

joecool85 · « **on:** August 04, 2006, 01:08:53 PM »

What is the stock compression ratio on a 2.3 in a pinto? I had read that the 2.0 was 8.2:1 and was thinking I read that it was the 2.3 lol. Is the 2.3 that low? I know later 2.3s are 9.5:1, but it wasn't that high in the pintos was it?

onefarmer · « **Reply #1 on:** August 04, 2006, 04:24:23 PM »

My 77 had 9.0-1 according to the books. I shaved 0.60" off the head. Theoreticly the new ratio was 10-1 but never checked it so don't take it as gospel. Added Headman Headers 2 1/4 pipes, went from 26mpg to 32 purely on the highway. It knocked some but backed off the timing 4 degrees and it was ok. Later added a bigger cam and could get the timing back and 28mpg.

joecool85 · « **Reply #2 on:** August 04, 2006, 04:44:14 PM »

Really? 9:1 huh? Sweet, thats what I was aiming for. I was figuring it was 8.2:1 and I could raise it to 9, but if it's already 9 thats great!

joecool85 · « **Reply #3 on:** August 06, 2006, 06:48:16 AM »

Ok, I found out that 74-75 is definetly 8.6:1, and 77-80 is 9:1, I can't find info on the 76 motor, but I'm sure its either 8.6 or 9 lol. Good stuff to know. I got most of my info from the options listings here: http://pintopage.fordpinto.com/

joecool85 · « **Reply #4 on:** August 06, 2006, 08:17:44 PM »

K, so I think the '76 is 9:1 compression, but not 100% sure. Does anyone know? Or does anyone know who I could talk to, where I can research, or some sort of book I can check or something?

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Author Topic: Stock compression ratio on 2.3 (Read 5223 times)

joecool85

Stock compression ratio on 2.3

onefarmer

Re: Stock compression ratio on 2.3

joecool85

Re: Stock compression ratio on 2.3

joecool85

Re: Stock compression ratio on 2.3

joecool85

Re: Stock compression ratio on 2.3