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04-19-2018, 05:52 AM | #1 |
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valves to tight ?
How does an 8ba sound & act if valves are adjusted too tight? Lumpy idle & low compression? This is a fresh rebuild by a reputable builder. THANKS for any imput!!! mike
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04-19-2018, 05:55 AM | #2 |
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Re: valves to tight ?
Forgot to mention this is a stock 8cm cam.
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04-19-2018, 06:33 AM | #3 |
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Re: valves to tight ?
If exhaust valves are too tight you can hear it at the tail pipe, if intake valves you'd hear it popping back through the carb.
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04-19-2018, 06:33 AM | #4 |
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Re: valves to tight ?
Too tight will result in a rough idle as will a few other things. Connecting a vacuum gauge or doing a compression check can determine if you have a problem with the valves or not.
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04-19-2018, 09:02 AM | #5 |
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Re: valves to tight ?
Thanks guys....Frank, comp is only 50-70 new build 400 offy heads.
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04-19-2018, 09:05 AM | #6 |
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Re: valves to tight ?
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04-19-2018, 09:06 AM | #7 |
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Re: valves to tight ?
Thanks J already going that direction.
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04-19-2018, 09:58 AM | #8 |
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Re: valves to tight ?
I just checked vac...very low & needle jumps around a lot! Sounds like a valve issue since dizzy & carb are known good units....yes?
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04-19-2018, 10:47 AM | #9 |
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Re: valves to tight ?
Compression should in the 120 range at least.
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04-19-2018, 11:53 AM | #10 |
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Re: valves to tight ?
The first thing you will notice is the engine will have very low power until high RPM are reached.
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04-19-2018, 06:27 PM | #11 |
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Re: valves to tight ?
JWL yup as rpm increases it sounds better & smoother.....thanks to each one of you for your thoughts! The builder will get the car & says they will make it right....God is good & i feel the builder is too.
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04-19-2018, 06:30 PM | #12 |
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Re: valves to tight ?
Special thanks to all for help & support ... the Barn is GR8 !!!! mike
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