Beater 2316, Deck height vs. CR |
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Beater 2316, Deck height vs. CR |
groot |
May 2 2020, 01:15 PM
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#1
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Dis member Group: Members Posts: 896 Joined: 17-December 03 From: Michigan Member No.: 1,444 |
So, finally getting around to building a "beater" engine to develop my race car project (been idle too long). The idea is to build a reliable, decent engine that's not crazy expensive to sort out my car, then put in the expensive engine when the chassis is ready. I will only use race fuel with this engine.
Basic specs are:
Now, the question... should I source 0.220" or larger shims to drop the CR at the expense of deck height? A shim of 0.220" will drop the CR to 10.4:1, but raises the deck height to 0.050" Thoughts? |
wndsrfr |
May 10 2020, 06:56 AM
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#2
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Senior Member Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
I've got the same build... have to dig a bit to come up with my numbers but I'm on pump gas so just a tad over 10:1.
Jake or Len said not to be too concerned about calculated CR as the cam overlap drops the dynamic CR a lot....like below 9:1 iirc. Give Len a call.... I'm betting that you're way safe on 110 leaded. Oil sump needs to be deep. ..pretty sure I have a SCAT deep one here that I'm not going to use...lmk if you want it. |
stownsen914 |
May 10 2020, 08:53 AM
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#3
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Senior Member Group: Members Posts: 913 Joined: 3-October 06 From: Ossining, NY Member No.: 6,985 Region Association: None |
Just realized that you're talking about a 2316 displacement. I'd assumed smaller to make a race class. Wasn't noting the details apparently. So prob more like 200 hp.
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