 Deck Height, using shims UNDER the cylinder |
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| IHHRA |
 Dec 11 2011, 09:14 PM
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#1
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Newbie  Group: Members Posts: 2 Joined: 11-December 11 From: Western NC Member No.: 13,888 Region Association: None  |
When calculating compression ratio, is it a no-no to use more than one shim under the cylinder to get the desired DH?
Thanks, Bill |
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| stugray |
Dec 13 2011, 12:07 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
How about NO shims?
Any advice on that one? Stu |
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| wndsrfr |
Dec 13 2011, 12:39 PM
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#3
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Senior Member Group: Members Posts: 1,458 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region 
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QUOTE(stugray @ Dec 13 2011, 10:07 AM)  How about NO shims? Any advice on that one? Stu I'm re-doing my 2316 right now......shooting for 10:1. I'll get 9.9:1 at zero deck height with a .056" shim. Based on the CR calculator at CB's website, if I put in no shims, I'd have minus .056" deck height which would yield 11.6:1--too much for me on 93 octane and probably get valve interference as well with the 9560 cam. Be mighty careful if you go that close! Of course, your registers may be higher up or your piston pins as well, so you've got to measure your specific deck height carefully--here's the link to the CB calculator- http://www.cbperformance.com/enginecalc.html John |
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Posts in this topic
IHHRA Deck Height Dec 11 2011, 09:14 PM
Mark Henry Three shims max, but I would get shims made by RIM... Dec 11 2011, 09:49 PM
IHHRA
Three shims max, but I would get shims made by RI... Dec 12 2011, 08:54 PM sean_v8_914 burnish the faces and de-burr teh edges. Dec 12 2011, 08:51 AM 76-914
Three shims max, but I would get shims made by RI... Dec 12 2011, 10:39 PM Mark Henry
Three shims max, but I would get shims made by R... Dec 12 2011, 10:54 PM sww914 I can't recommend it, but I ran 5 shims in my ... Dec 13 2011, 11:31 AM '73-914kid On stroked motors, or motors that are not your ... Dec 13 2011, 12:32 PM bobhasissues Type IV shim sets available at DRD Racing approx ... Dec 13 2011, 01:07 PM |
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