Car won't run in Az......

[azfordman]

I have not checked the secondaries on the carb that is on the car, so I am not sure if it has jets or a metering plate, just started with the primaries to get the car running better. Drilling out the #61 jets had a major improvement already (drilled them out just enough to see a visual size difference, nothing drastic). My question still is...if an engine is set up with higher compression and a bit of a cam, is a bit of a stumble/miss while at low throttle while driving normal? Timing is at around 30 BTDC which is where it seems to run the best. All plugs are good and firing, vacuum advance on the dist. is working, my only thought now, if this is a problem, is that there may be an intermittent issue with the coil......Again, the car seems to be running much better now, but the slight stumble does seem right to me.

[vettestr]

Hey AZford,
How about a side bet for 5 bucks, payable on the next run we see each other? I bet your stumble is a timing issue. I bet your initial timing is too low and increasing initial timing to about 12 to 16 degrees will make the stumble go away.

If the initial is in the 6 to 8 range now then increase to 12 degrees .... increase a little at a time up to a max of 16* if she will take it without pre-ignition or pinging. If the new timing takes the stumble away then you need leave it there but then check the total timing. You may have to restrict the mechanical so total is more like 34* to 36* total timing with the initial bumped up to 14ish.

Check you initial timing as it is set up now ..After you take the bet for a fin of course and let me know the outcome. Jeff C

[azfordman]

Originally Posted by vettestr

Hey AZford,
How about a side bet for 5 bucks, payable on the next run we see each other? I bet your stumble is a timing issue. I bet your initial timing is too low and increasing initial timing to about 12 to 16 degrees will make the stumble go away.

If the initial is in the 6 to 8 range now then increase to 12 degrees .... increase a little at a time up to a max of 16* if she will take it without pre-ignition or pinging. If the new timing takes the stumble away then you need leave it there but then check the total timing. You may have to restrict the mechanical so total is more like 34* to 36* total timing with the initial bumped up to 14ish.

Check you initial timing as it is set up now ..After you take the bet for a fin of course and let me know the outcome. Jeff C

That bet would be a bargain at twice the $, unfortunately the timing is already at 30 BTDC....this`is where the car runs the best....from what I understand the ignition needs to be advanced until it starts to "ping" then back it off.....with as loud as these cars are how in the world can you tell if it is pinging???