Author Topic: Compression Ratio (Read 2493 times)

Trevor P · « **on:** September 12, 2004, 10:01:33 PM »

OK, I'm just pondering what compression I'm gonna run in the 2332. I have barrell spacers done, and the deck height figured. I was planning on using copper head gaskets as well which will yield a 9:1 ratio. If I pull out the coppers, that will bump me up to 9.7:1, with still safe deck height. Is it gonna be worth it to run a bit higher compression, or should I stick with the safer 9:1? I plan on running premium either way, and the car WILL be street driven as well. 911 shroud, with K-8 cam, and 044 CB heads with Kroc's touch.

James Buchan · « **Reply #1 on:** September 13, 2004, 09:11:22 AM »

I run a tad over 10:1 - weekend use only.

dannyboy · « **Reply #2 on:** September 13, 2004, 09:46:03 AM »

what kind of gas can you get over there?
i run my 2275 at 9.6:1 with no worries on 94 oct gas

Trevor P · « **Reply #3 on:** September 13, 2004, 11:02:07 AM »

94 at the pump.

James Buchan · « **Reply #4 on:** September 13, 2004, 11:06:15 AM »

I run on 94 Oct as well, no problems.

Bruce · « **Reply #5 on:** September 13, 2004, 04:54:44 PM »

What is the deck height for both CRs?

Trevor P · « **Reply #6 on:** September 13, 2004, 07:57:56 PM »

.040\" without copper gaskets.
.070\" with the coppers.

GMB · « **Reply #7 on:** September 14, 2004, 10:53:04 AM »

Hey Trevor. Run the .040\" and no copper torqued to 25ft lbs. You will be very happy! I am running 10.5:1 in a 2110cc with an engle 100 on 94 octane daily driven till the tranny went on holiday. With the K8 you could run 11.5:1 on pump gas with no problem. Tied together with Kroc heads and you would have an incredible engine. 9.7:1 will be excellent though. I know Brian Cook runs about the same compression (9.7:1) and runs 13.7 (Kroc heads) in the quarter on street tires and stock 4th gear in a fully dressed convertible Ghia. Allen U. is running High 11s with 9. somthing and Kroc heads in a full body 60s beetle. I know Brian is running .040\" deck hieght without the coppers and you would have to ask allen what he runs but I bet it is real close to .040\".
Gary Massin-Ball.

Hansk · « **Reply #8 on:** September 14, 2004, 06:23:49 PM »

Yup , I'd agree with the .040\" regardless of the comp. ratio or if you use the copper caskets or not . Based on what I hear and read , your engine \" MAY \" run hotter and be more prone to detonation with .070\" deck despite the lower comp. ratio .

Sparkmaster1 · « **Reply #9 on:** September 14, 2004, 08:16:37 PM »

If you have good steel rods .040 is a great deck height for performance and tunability. I have a friend down here that runs 10 to 1 on a street 2332 and drives it daily with no problems. He does use a slightly larger cam though. Web 86b I believe. What carbs do you intend to use? Sounds like a great combination. Tim.

Trevor P · « **Reply #10 on:** September 14, 2004, 08:54:12 PM »

Yeah, I'm running 84 CB crank with 5.5 CB H beams. Haven't bought any carbs for it yet (last big ticket item). Orginally was gonna run 48 DRLA tri-jets, but now 'am leaning more towards IDA's. Airfilters (or lack thereof)....that's the only thing I don't like about the IDA's. [_[

James Buchan · « **Reply #11 on:** September 14, 2004, 08:55:55 PM »

I'm pretty sure you can run an aircleaner on IDA's - you just wouldn't be cool though.

Trevor P · « **Reply #12 on:** September 14, 2004, 08:59:01 PM »

I saw that coming!

Yeah, I've seen those stupid looking little K&N pod put on top of the stacks...I say no!
I bet I would be cool if I had a set of oldschool NOS Empi airfilters for IDA's though! :lol:

James Buchan · « **Reply #13 on:** September 14, 2004, 09:00:05 PM »

Maybe a little....I really liked my old tri-jets they were nice carbs but nothing beats the sound of an IDA!

Trevor P · « **Reply #14 on:** September 14, 2004, 09:01:31 PM »

That is very true!

Hansk · « **Reply #15 on:** September 14, 2004, 11:16:59 PM »

Quote

but nothing beats the sound of an IDA!