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> full throttle pinging....., wondering...????
crash914
post Oct 4 2005, 06:28 PM
Post #1


its a mystery to me
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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







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Posts in this topic
crash914   full throttle pinging.....   Oct 4 2005, 06:28 PM
Aaron Cox   too much advance?   Oct 4 2005, 06:31 PM
crash914   advance is set at 12 and 28. Mallory unilite.... ...   Oct 4 2005, 06:33 PM
Jake Raby   Whats your deck height??? if it's .100 thats a...   Oct 4 2005, 06:36 PM
john rogers   What do the plugs look like after a full throttle ...   Oct 4 2005, 06:39 PM
Jake Raby   John, We learned that years ago..... Most engines...   Oct 4 2005, 06:44 PM
crash914   This will give me something to do this winter.... ...   Oct 4 2005, 07:02 PM
Jake Raby     Oct 4 2005, 08:28 PM
bd1308   I am pretty sure my problem is fuel delivery relat...   Oct 4 2005, 11:21 PM
crash914   I knew that was what you would say Jake....I was b...   Oct 6 2005, 02:13 PM
Jake Raby   No need to call either of us... These combination...   Oct 6 2005, 02:39 PM
bd1308   sorry to hijack.... So Jake, you say that the he...   Oct 6 2005, 02:57 PM
bug man nrg   you are all over looking the dizzy we had a dizzy ...   Oct 6 2005, 02:57 PM
bd1308   mine's a fuel problem.... yeah man either way...   Oct 6 2005, 03:03 PM
Jake Raby     Oct 6 2005, 03:19 PM
bd1308   I was thinking the same thing concerning reusing u...   Oct 6 2005, 04:05 PM
Jake Raby     Oct 6 2005, 04:26 PM
Aaron Cox  
 

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