Subject	Re: Stuck lifter may cause LOSS of compression
Posted by	slicktt on August 22, 2013 at 12:40 PM
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In Reply To	Stuck lifter may cause LOSS of compression posted by ZXoltan on August 22, 2013 at 12:12 PM
Message	Camshaft profiles actually have something designed in them called overlap. During this time both intake and exhaust valves are open somewhat. If the exhaust valves are sticking shut or not fully opening or if the intake valves shut early it can actually raise compression especially at cranking speed. Because the overlap duration is decreased and this forces up pressure. Overlap only helps airflow at higher engine speeds. I have seen it happen more than once. 1995 Slicktop TwinTurbo HREF="http://www.flickr.com/photos/100257008@N08/sets/721576350 44711353/">Z32 Build
Follow Ups	repost -Engine rebuild? - Zvil (FL) 11:49:19 08/21/13 If it isn't broke, don't fix it, lol. Install the parts on - TTZ2NV(EPTmotorsports) 12:00:47 08/21/13 Yes he did but he did replace the main and rod bearings - Evan_Wright (Ca) 12:32:48 08/21/13 dont touch it the engine. - rmp459 12:09:21 08/21/13 Repost...? When/where did you post originally? - ZXoltan 14:18:48 08/21/13 repost because there are several "should I rebuild" posts - Zvil (FL) 15:36:08 08/21/13 no way I would do it - LJZTT 15:07:06 08/21/13 Replace the rod bearings at a minimum. (n/m) - michaell32 (FL) 15:09:58 08/21/13 Re: repost -Engine rebuild? - slicktt 09:59:34 08/22/13 Need to totally disassemble to check ring gaps. - ZXoltan 10:24:49 08/22/13 Re: Need to totally disassemble to check ring gaps. - slicktt 10:35:59 08/22/13 Stuck lifter may cause LOSS of compression - ZXoltan 12:12:24 08/22/13 that's kinda what I was poking at - Zvil (FL) 12:20:47 08/22/13 Re: Stuck lifter may cause LOSS of compression - slicktt 12:40:11 08/22/13 Would an oil pressure test and oil analysis be enough? - Zvil (FL) 12:26:38 08/22/13 Your first sentence is a fairly common sentiment here (which - LJZTT 12:00:49 08/22/13 my example is a poor one - LJZTT 12:06:34 08/22/13 Re: Your first sentence is a fairly common sentiment here (which - slicktt 12:47:43 08/22/13 I will admit though - slicktt 12:51:37 08/22/13 this is my point - LJZTT 15:44:45 08/22/13 What Mitch from EPRacing has to say. - LivinTheDream 23:01:21 08/22/13 More: - LivinTheDream 23:10:22 08/22/13 If your as meticulous as u say and I am as well I would - LivinTheDream 23:14:23 08/22/13
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