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08-24-2021, 05:11 PM | #1 |
Junior Member
Join Date: Aug 2011
Location: On a rock pile, Tijeras NM
Posts: 10
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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 |
08-24-2021, 07:22 PM | #2 |
Senior Member
Join Date: May 2010
Location: Oregon
Posts: 5,963
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Re: Compression PSI
Your engine seems ok.
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08-25-2021, 07:22 AM | #3 |
Junior Member
Join Date: Aug 2011
Location: On a rock pile, Tijeras NM
Posts: 10
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Re: Compression PSI
I was thinking so,
Thank you for the confirmation |
08-25-2021, 09:05 AM | #4 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,342
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Re: Compression PSI
Even at sea level, 40 would be ok.
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08-25-2021, 11:41 PM | #5 |
Member
Join Date: Apr 2013
Location: Ft Collins, CO
Posts: 80
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Re: Compression PSI
Hello there Mr Red or Green,
Is it the car or your drive way? Its a great little car! Cheers, gb |
08-26-2021, 10:14 AM | #6 |
Senior Member
Join Date: May 2010
Location: Portland OR
Posts: 6,342
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Re: Compression PSI
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