no_car_yet

my GTA is a smoker....it smokes the blue from the pipes.ugh. so what i am wondering is: - is there a way i can tell whether its my rings that are gone or if its just the valve seals, without opening the motor(like can i tell from if it builds up on idle or something like that?). this is the orgional never opened 305 with about 100,000 miles on it now if thats any indication, and i am trying to build a new motor for it but the 305 gotta do for a while yet, so if i can determine that its just the vavle seals gone, i'll have them replaced, but if its the rings gone, i'll just keep workin at the new motor.

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1991 trans am GTA
WS-6, t-tops
305 TPI auto, airfoil, Polished plenum/runners, K&N, headers, borla cat back, removed cat, B&M megashifter

15.0@95mph


1985 Camaro. 305 4bbl...dual side exit exhuast, Z28wheels, grant steering wheel, 2 10"subs with amp and custom box. 84 style GFX and front bumper. 84 Z28 hood.


Scrapped :
1986 Firebird
1984 Camaro Z28

Vader

A cylinder leakage test should help identify the source(s). The test is usually performed with the piston at TDC of the cylinder being tested. Of course, the valves are closed in that cylinder for the test. If you get significant leakage which can be audibly detected through the sump and oil filler cap of the rocker cover, it's likely the rings. If there is no significant leakage indication, either by sound or readings (less than 20%), your oil source may be the valve stems and seals.

It is entirely possible that you have a little of both. It is also possible that you have some of the oil ring rails that are sludged and sticking, and a good cleaning/flush might just help reduce some of the consumption.

92MaroRS

from what ive noticed, if it just smokes until it warms up its the seals, if it smokes constantly its the rings. just what ive seen with a few of my friends motors that have done stuff like this.