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Old 08-24-2021, 05:11 PM   #1
red or green
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Default Compression PSI

Hello to all in T land
I acquired a 1918 T Roadster awhile back, though it has electric start added and changed to a steel firewall.
It was running pretty rough and I started down the road of troubleshooting.
In the process, I took all the spark plugs out and performed a compression test.

40 PSIG on all four holes.

I'm doing this at 7000' elevation so if you add 25% compensating for altitude, round numbers, it would be 50 PSI at sea level
I am thinking that is in the ballpark of acceptable for a T engine.
Agree or disagree....??

I've got it running well, it's remarkable what rebuilding and timing coils will do in conjunction with a new timer!

Thanks
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Old 08-24-2021, 07:22 PM   #2
J Franklin
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Default Re: Compression PSI

Your engine seems ok.
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Old 08-25-2021, 07:22 AM   #3
red or green
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Default Re: Compression PSI

I was thinking so,
Thank you for the confirmation
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Old 08-25-2021, 09:05 AM   #4
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Default Re: Compression PSI

Even at sea level, 40 would be ok.
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Old 08-25-2021, 11:41 PM   #5
G Baese
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Default Re: Compression PSI

Hello there Mr Red or Green,
Is it the car or your drive way?
Its a great little car!
Cheers,
gb
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Old 08-26-2021, 10:14 AM   #6
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Guessing, you are talking abut the cut off pickup? If so, thank you!
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