D Cluley
Well-Known Member
I was having trouble reading the timing marks on my '65 383. Stuck my phone down in there and got this picture. Am I reading this correctly?
Timing Marks?
- Thread starter D Cluley
- Start date
That looks correct, you can take some white chalk across the grooves to make them easier to see with the timing light.
Dave
Dave
D Cluley
Well-Known Member
Thanks, I actually hit the O line with a sharpie for the moment. Just wanted to be sure I had the numbers right. I'm getting some weird numbers. I suspect either the damper has slipped or my timing light is off.
If it is a old dial back be suspect, very suspect! Whats is it doing?
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On the FEW dampers I have seen where the outer ring actually "slipped", it ALSO moved outward or rearward significantly. VERY easy to see. The rubber in yours does look aged, but does not look like thr ring has moved enough to be a problem.
You might want to get some red Scotchbrite and clean the surface of the marker better. Which will also accent the stamped marks on the marker better in the process.
Just some observations,
CBODY67
You might want to get some red Scotchbrite and clean the surface of the marker better. Which will also accent the stamped marks on the marker better in the process.
Just some observations,
CBODY67
The possibility of "slippage" is always there and mentioned in all of the diagnostic trouble-trees for decades. Just because it is mentioned does not make it prevalent, though. Of all of the engines that my late machine shop operative "processed" during his time, between his teens and 80s, in the times I was around his shop (since the later 1970s), I only saw one balancer whose ring had moved. Yet there was always the possibility . . . and
CBODY67it also moved forward or rearward, not just rotated.
I concur that the prevalence of "moving" is greatly less than suspected, also knowing that it does not just turn, it moved outward, too.
CBODY67it also moved forward or rearward, not just rotated.
I concur that the prevalence of "moving" is greatly less than suspected, also knowing that it does not just turn, it moved outward, too.
D Cluley
Well-Known Member
It's a no name dual back light that I've had for nearly 20 years, so I am not surprised it has gone off. I'm getting awfully high numbers. Pretty sure my base timing at idle isn't 35 degrees before center. If it is off a consistent amount, I can deal with it, but haven't had time to investigate further.
57fury440
Senior Member
The snout on my son's 318 cracked and the balancer rotated about 15 degrees. I replaced it with a new one. That is the only Mopar one I have ever seen in sixty plus years of working on them. His balancer had 140,000 miles on it. The rubber was still good.
I have never seen one in person either.
I have read of a few Mopar dampers that possibly slipped, but never confirmed. I do know that there are some engines, like the GM 3.8 V6 where it's not uncommon.
Whenever I assemble an engine, I always double check TDC on the damper and never found one that was off.
That said, I have seen some really poor condition Mopar dampers with rotted rubber that just hit the scrap pile rather than being bolted on. Hard to say if they would have slipped, but the chances had to be higher.
Find a non dial back timing light and see where you are at. The dial backs the resistor on the knob wear out and are unreliable. Think of crackling on a radio volume knob. Digital ones work fine.
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