 Compression: can it be tested old & cold?, with any positive results??? |
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| Bruce Allert |
 Jun 16 2005, 12:09 AM
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Hellions asleep  Group: Members Posts: 3,289 Joined: 19-March 03 From: Eagle Creek, Orygun Member No.: 441 Region Association: Pacific Northwest  |
I've had this 1.7 for 2 years sitting on the shop floor. The guy I got it from prolly had it a few years sitting on his shop floor and it had oil in it when I got it. Looked clean too. (oil that is)
I checked compression tonight by rotating the engine by hand. Did 4 - 5 rotations for the peticular cylinder being tested. The results were a consistant 30 PSI in each hole. The only oil I've added is some Marvel Mystery Oil thru the plug holes and most of that squirted out the exhaust valves. There should be some oil in the sump. I know quite a bit came out onto the floor when I was moving it but it ain't dry! I'm just not sure if I want to go thru putting this engine in the car and have it not run or have no more than 30 PSI. Any ideas? Anyone know if compression will come up once it's running? I even adjusted the valves to be sure nothing was open. ........b |
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| SLITS |
Jun 16 2005, 11:12 AM
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
We used to do it wet & dry to determine the condition of the rings (kinda).
1st test...hook it up and spin it. 2nd test....shoot a couple of squirts of oil in the cylinder..hook it up and spin it. Compression will usually increase....if it increases a lot...the rings are worn (maybe). Have fun...last engine I tested cold...hadn't run in 3-4 years...130 PSIG on all cylinders. |
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Posts in this topic
Bruce Allert Compression: can it be tested old & cold? Jun 16 2005, 12:09 AM
groot 30 psi???? If that measurement's correct, don... Jun 16 2005, 06:28 AM groot I've tested my compression when the engine... Jun 16 2005, 06:30 AM Bruce Allert Jun 16 2005, 08:30 AM ! Best to do a leak down when an engine is out and c... Jun 16 2005, 08:36 AM SLITS You can't turn it fast enough to get real numb... Jun 16 2005, 10:31 AM Bruce Allert Jun 16 2005, 11:07 AM
Bruce Allert Thanks Buddy http://www.914wo... Jun 16 2005, 11:17 AM |
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