rstclark
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Status Updates posted by rstclark
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John
I located an air pump I was going to discard it because is was frozen up but
my mechanic disassembled it lubed it and installed a new front bearing now it spins and it pumps air
It's not pretty and you will have to fabricate a belt tension bracket, the flat bar like on an alternator
Make me an offer with shipping from California to Colorado
Rob Clark
rstclark@yahoo.com
7607101189 cell or text
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John
Sorry I missed your question about the 123 tune
Just read the instructions that came with it and read the long thread a couple of times
The most difficult part is setting up the curves. The Light they talk about that denotes TDC I never could find. I think it is on the exterior of the distributor and shines down on the engine. You don't even need it. Just get it close and crank the motor until it fires It helps to have a friend twisting the distributor to get it to start but I've done by myself by just making small changes in the distributor until it will run by itself Then you can tune it by hand to find a good idle. I never really checked the actual static timing. I just found the best idle and went from there I know my motor is using a lot of advance at 3500 RPM Also The wiring instructions are a little vague about the switch for the second curve but you can figure this out.
Remember this, A Lean mixture like at idle and cruse take longer to burn hence you need to light the match sooner This is where the vacuum advance comes in under low load situations. If all you did was drag race at full wide open throttle all the time you wouldn't need vacuum advance. The vacuum curve has the motor already set to go when you transition from cruise to wide open.
Give it a go read a search thread about setting timing to get comfortable with how to find top dead center and set the distributor.
Once you have done it you will be proud of yourself
Best regards
Rob