Subject	Your pressurize the cylinder at TDC with compressed
Posted by	MikeH(Phoenix) on December 12, 2001 at 5:02 PM
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In Reply To	what exactly is a leakdown test? posted by NIXTA TTZ on December 12, 2001 at 04:48 PM
Message	air on the compression stroke. You are measuring how well the rings and valves hold the pressure. If you set your compressor for 100PSI and the cylinder can only maintan 90psi then you have a 10% leak down . A strong motor will have 2% -10% leak down. Anything over 15% is queastionable. . Arizona'a most powerful 600HP 15 second Z More powerful than a stock TT , slower than an NA Dynoed 515 rwhp and 420 ft.lbs @ 16psi 89 degrees. 533 rwhp and 450 ft. lbs @19 psi and slipping clutch and heat soaked motor , 85 degrees.
Follow Ups	cant find problem with 40 psi cylinder.. - NIXTA TTZ 16:02:26 12/12/01 should have tested befoe head removed. When head is> - RT 16:13:54 12/12/01 isnt he correct tho?>> - NIXTA TTZ 16:28:48 12/12/01 No one cylinder being down unless piston has hole will>> - RT 16:40:08 12/12/01 Re: No one cylinder being down unless piston has hole will>> (n/m) - Z 6370 (Fab Hoe) 18:53:57 12/12/01 I had the same test, and it narrowed down to the valves. - KingRamaZX 18:10:04 12/12/01 Looks like my valves then. whew.........Thank God. (n/m) - KingRamaZX 18:04:25 12/12/01 You should have done a leak down test also (n/m) - MikeH(Phoenix) 16:41:40 12/12/01 what exactly is a leakdown test? - NIXTA TTZ 16:48:34 12/12/01 Your pressurize the cylinder at TDC with compressed - MikeH(Phoenix) 17:02:01 12/12/01 we did a leakdown.. came up 90%.. (n/m) - NIXTA TTZ 17:43:23 12/12/01
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