Thread: Stock AFR ratio
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Old 04-12-2020, 10:50 AM   #8 (permalink)
Z_ealot
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Quote:
Originally Posted by SonicVQ View Post
What was the compression pressure for each cylinder?
For reference, the factory spec is:
•*Standard: 242-341 PSI
• Minimum: 178 PSI
•*Maximum cylinder to cylinder difference of 14 psi

How much oil does it burn?
210 across all cylinders hot and dry, between about 250-260 hot and wet across all cylinders. The only exception is cylinder 3 and 5 which start out at the same psi as all other cylinders but then lose about 20 psi over the course of a minute. As for how much oil is burning, keeping track of it since this last oil change i did it had burned a half quart in just under 1500 miles. Also threw a vacuum gauge on it just to test out and vacuum gauge reads a steady 16 in/Hg which seems like something's up there but talked to my tuner and he insisted it's fine. Also checked cylinders 3 and 5 with a borescope and they show no obvious signs of head gasket failure, still have a nice thin coat of carbon on each of the piston tops so not sure what's going on. Only thing i don't have available to me and I'm not capable of doing where i live is a leak down test which I'm trying to get scheduled at the dealership

Last edited by Z_ealot; 04-12-2020 at 10:53 AM.
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