jhdeval
Well-Known Member
I know this has been beat to death but i am just curious im about 8 degrees before tdc. The engine sounds good and runs like a top. Is that a reasonable degree of timing?
slant timing
- Thread starter jhdeval
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805moparkid
Slant and AFX Guy
is the engine stock??
jhdeval
Well-Known Member
805 moparkid yes dead stock. The only thing i did was rebuild the head
805moparkid
Slant and AFX Guy
didnt mill it for compression?
i would think you should be able to get another couple of degree's in it say 10 or 12
jhdeval
Well-Known Member
It was up to about 20 degrees and it drove but not great at idle the engine would vibrate.
805moparkid
Slant and AFX Guy
yea just go for 10 to 12... and what do you mean by the engine vibrating? you mean pinging??
jhdeval
Well-Known Member
I mean literally vibrate. You would feel the whole car would shake. The mounts need to replaced but the gibratio still felt excessive.
805moparkid
Slant and AFX Guy
and it only does this when you turn up the timing?
slantsixdan
=..=
8° BTDC is an entirely reasonable setting that sounds like it's working well for you. You can experiment with more, but keep careful track of your gas mileage and listen carefully for pinging; I think you'll probably wind up going back to 8°.
jhdeval
Well-Known Member
805moparkid Yes with the timing at about 20 degrees the vibration was definitely consistent and it just didn't feel as responsive. Now I hit the gas and it responds immediately the vibration does not happen and the engine is quieter in general.
yea, my 66 does the same thing when you over advance the timing. Its because the engine is running rougher at idle, and the motor mounts are worn completely out. The lower and rougher idle makes the car shake, lol. Thats on mine anyhow.... Mounts are completely cracked up.
slantsixdan
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