full throttle pinging....., wondering...???? |
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full throttle pinging....., wondering...???? |
crash914 |
Oct 4 2005, 06:28 PM
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#1
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its a mystery to me Group: Members Posts: 1,827 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Ok, When ever I go full throttle, I get a lot of pinging....
in first or second, I can full throttle, but have to shift fast to the quick revs. under part throttle, I can spin up to 6500+ with no pinging or problems. I just can't floor it. seems odd to me. my afr is down around 11:1 at full throttle, so I am running plenty rich. I am running 93 octane, might have to add some xylene. I am wondering if my throttle bodies are too large. I don't know if my air fuel meter can pick it up that quick. I really notice it when I am in 5th gear and am pulling from around 2500 to 6500. I do have a spare set of heads that I can get cut... all right here is the specs...103 by 80. .125inch barrel shims gives me around .1" clearance and around 9.7 to 1. megasquirted with twin weber throttle bodies and large injectors... herb |
bd1308 |
Oct 6 2005, 02:57 PM
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#2
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
sorry to hijack....
So Jake, you say that the heads listed here are NEW castings, made from Today's metallurgy standards....... like new heads, and not re-used used castings? b |
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