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Timing/Tuning question, urgent
Posted 12 September 2003 - 01:10 AM
It's an 87 carbureted with an SPFI long block and the emissions stuff on the back of the block removed with a weber in mind somewhere in the future.
I was doing some last minute tuning tonight (car's only been running for like a week) including finally installing the thermostat(180deg) and it pings like a b******. I have a tank of regular gas in it and tonight added a bottle of octane booster and topped it off with 4.5 gallons of premium tonight, but I don't know if it's even found its way to the carb yet.
I don't know what the timing's set at because the timing light I borrowed from my dad is broken ..
I had the distributor turned all the way counterclockwise because it was easiest to start that way before it started running better and I put the good exhaust on (that helped a lot!). It would ping when I had the pedal about floored, and over 3000-3500 rpms.
I've turned it a little clockwise to advance it but it only seems to be pinging easier? If I have it advanced too much can that also cause ping?
I took it on the freeway up the Big Hill west of town on the way home tonight and it was pretty gutless. 35 in 3rd and I had to take it easy so it didn't ping too much.
-remove the thermostat?
-retard the timing?
-give up and rent a car to go get Skeet? or make him rent one to come here
I won't have too much time to play with this tomorrow before I am supposed to leave...
Posted 12 September 2003 - 01:15 AM
Timing with no light,
Advance timing until it pings under load.. Then retard it little by little until it doesn't ping anymore(under load/acceleration)
That should put you somewhere into a happy medium provided all fuel/ignition sytems are functioning properly
Posted 12 September 2003 - 01:30 AM
What do you think about the power loss?
others please feel free to reply.. not knocking yours, Caleb, but time is of the essence and I need as much feedback as possible here... this has very much been a learn-as-i-go thing. thanks again.
Posted 12 September 2003 - 04:48 AM
Posted 12 September 2003 - 06:38 AM
Posted 12 September 2003 - 08:47 AM
Posted 12 September 2003 - 09:39 AM
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