 2.0 L race engine deck height, How little dare I? |
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| Driver174 |
 Mar 7 2018, 01:02 AM
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#1
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Member  Group: Members Posts: 120 Joined: 2-February 17 From: Nevada Member No.: 20,806 Region Association: None 
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914-4, stock crankshaft, Stock Jugs, H-Beam rods, JE Pistons, 7k redline; how tight can I safely go? I've heard that a deck height of 0.050" is a safe amount. Can I go 0.040" without risking interference issues?
Thanks, Jim |
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| Mblizzard |
Mar 7 2018, 07:50 AM
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#2
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Others may have more specific information but I would be concerned about interference caused by valve float at 7K especially if you are running stock springs.
You can certainly go through the process of checking the clearance using clay or dial indicator but you also have to account for piston rock and allow additional clearance on the exhaust site for the additional expansion of the exhaust valve due to the heat. Some of the experts may be abele to give you exact numbers for rules of thumb clearances but if you are running stock springs at 7K rpm then you can be sure that you will get valve float. |
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| Driver174 |
Mar 7 2018, 10:55 AM
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#3
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Member Group: Members Posts: 120 Joined: 2-February 17 From: Nevada Member No.: 20,806 Region Association: None
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I'm really just concerned with deck clearance; wanting to know how tight I can safely go.
Valves, springs and cam have all been upgraded. Thanks, |
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Posts in this topic
Driver174 2.0 L race engine deck height Mar 7 2018, 01:02 AM
Racer Chris With CrMo rods and forged pistons you can set the ... Mar 7 2018, 11:02 AM Mblizzard I read here somewhere that the deck height require... Mar 7 2018, 11:21 AM yeahmag I’m around 0.038” on stock 2L rods and crank, ... Mar 9 2018, 11:03 AM
Racer Chris
I’m around 0.038” on stock 2L rods and crank,... Mar 9 2018, 11:20 AM yeahmag Not sure if you remember Evan Fullerton, but he ra... Mar 9 2018, 11:47 AM brilliantrot
Not sure if you remember Evan Fullerton, but he r... Mar 14 2018, 01:05 PM Driver174 Thanks for the input guys; I'm feeling better ... Mar 15 2018, 09:58 PM Charles Freeborn Ressurecting this thread as I'm unable to run ... Jan 27 2022, 05:32 PM stownsen914
Ressurecting this thread as I'm unable to run... Jan 28 2022, 07:58 PM |
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