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01-25-2001, 12:47 PM
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Registered Member
Join Date: Aug 2000
Location: Thousand Oaks, CA
Posts: 396
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Pinging/detonation question
I need some help determining whether the sound I'm hearing is exhaust leaks or detonation. I haven't been able to cure the header leaks yet, and I've advanced/retarded the timing from 8 BTDC to 18 BTDC and the noise seems to remain constant. Add to that the Flowmasters are pretty loud - how do tell the difference between pinging and header leaks? Can you hear it over a loud exhaust? What sort of long term damage can I expect if it has been pinging for an extended period of time? Thanks for the help.
------------------ 86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s. |
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