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| What should my compression read? https://slantsix.org/forum/viewtopic.php?t=38431 |
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| Author: | RACE GENTRY [ Mon Dec 28, 2009 7:37 am ] |
| Post subject: | What should my compression read? |
I ran compression on 74 225 valiant all are 160psi, ran on my 65 Dart 225 and got 150 on 5 cyl and 140 on one is it time for a rebuild,Also engine on dart sucks for power. Both are automatic. |
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| Author: | Matt Cramer [ Mon Dec 28, 2009 8:13 am ] |
| Post subject: | |
Both of them are within spec. I'd first check the timing and give it a good tuneup. |
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| Author: | Doc [ Tue Dec 29, 2009 9:11 am ] |
| Post subject: | |
Check the valve lash as part of the tune-up. (valve adjustment) Tight lash will throw-off your cranking compression readings. DD |
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| Author: | ESP47 [ Sat Jan 02, 2010 2:48 pm ] |
| Post subject: | |
Even if you can't get it any better than that, those are all pretty high numbers. I'd leave it alone until something breaks. |
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