did you blueprint the timing pointer?
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,065
Likes: 79
From: central FL, near the beach.
did you blueprint the timing pointer?
when i installed (degreed) the cam i checked the timing pointer and it was off 2 degrees.
so when base timing says 12,
it is really 10
Anybody else check this?
so when base timing says 12,
it is really 10
Anybody else check this?
Melting Slicks
Joined: Dec 2000
Posts: 2,041
Likes: 0
From: Wichita, KS
Re: did you blueprint the timing pointer? (Matt Gruber)
No and I have regretted it ever since. I suspect that mine is at least 2 degrees off and will pull one of the heads this winter just to check the piston placement.
Pro
Joined: Nov 2000
Posts: 594
Likes: 0
From: Tucson AZ
Re: did you blueprint the timing pointer? (Matt Gruber)
I went through the trouble of pulling my EFI and left head to make sure it was right. I borrowed a friends magnetic base dial indicator and bought an adjustable timing pointer. Now I know it's right. My engine still does not run right. I called the manufacturer and they want me to send them my distributer and oxygen sensor to see if they are right.
Someday it will run right I hope - Somedays I think about switching back to the carb. I hope they find that the distributer or the O2 sensor is bad.
Someday it will run right I hope - Somedays I think about switching back to the carb. I hope they find that the distributer or the O2 sensor is bad.
Melting Slicks
Joined: Dec 2000
Posts: 2,041
Likes: 0
From: Wichita, KS
Re: did you blueprint the timing pointer? (Fevre)
Yes there is a stop pin that can be used to determine TDC. I have one in fact. The angle of the spark plug hole is to steep to allow for proper use. Don't want to poke any holes in the top of the piston!
Thread Starter
Race Director
Joined: Oct 2000
Posts: 15,065
Likes: 79
From: central FL, near the beach.
Re: did you blueprint the timing pointer? (1979toy)
could also use a long reach(mopar) spark plug.
loosen all rockers and turn over with a wrench.
But as long as the car has quiet mufflers, it can be tuned by ear. Or with loud pipes and a knock sensor.
loosen all rockers and turn over with a wrench.
But as long as the car has quiet mufflers, it can be tuned by ear. Or with loud pipes and a knock sensor.
Drifting
Joined: Mar 2001
Posts: 1,396
Likes: 7
From: Indiana
Re: did you blueprint the timing pointer? (Matt Gruber)
When I installed my cam last year, I found mine was off by 3 degrees. I bent it around to get it right, but I doubt it stayed put. I also used the threaded tool from Summit to check the pointer on my streetrod. It was off by 4 degrees. FYI, both cars have aftermarket chrome pointers.
I don't think you have to worry about that unless you plan to use the starter to turn the engine :eek: Just pull all of the spark plugs to reduce the compression and turn the engine by hand with a breaker bar SLOWLY. Set the stop so it stops the movement several(maybe 10 or so) degrees from TDC. Mark the balancer with chalk. Then turn it the opposite direction and mark it again. Halfway between the two chalk marks is your new TDC marker.
Yes there is a stop pin that can be used to determine TDC. I have one in fact. The angle of the spark plug hole is to steep to allow for proper use. Don't want to poke any holes in the top of the piston!
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