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Timing the 660

This is a discussion on Timing the 660 within the Engine forums, part of the Technical category; I have the service manual but just want some confirmation and some advice to make life easy.... you line up the flywheel with the "I" ...


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Old 04-27-2011, 07:27 AM
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Timing the 660

I have the service manual but just want some confirmation and some advice to make life easy....

you line up the flywheel with the "I" and the stationary mark there.....

the cam i believe the manual calls or the cam dots to be in the up position

so what is the easiest way to get the chain lined up and the two small cam bolts back in attaching the cam to the gear and position the chain on the gear with the cam now attached.

are the dots on the cam the only mark onthe top of the engine?
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Old 04-27-2011, 07:58 AM
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I just did mine and with the crank lined up you put the cam sproket in its place with 2 dots lining up with the top of the cylinder head and the third on top(2nd picture page 4-23 of manual).
Next you put the cam in making sure the 2 holes are up like in the manual(first photo page 4-23), install the first bolt through the sproket turn the crank then put the other bolt throught the cam sproket.
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Old 04-27-2011, 08:08 AM
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Quote: Originally Posted by mudman View Post
I just did mine and with the crank lined up you put the cam sproket in its place with 2 dots lining up with the top of the cylinder head and the third on top(2nd picture page 4-23 of manual).
Next you put the cam in making sure the 2 holes are up like in the manual(first photo page 4-23), install the first bolt through the sproket turn the crank then put the other bolt throught the cam sproket.
Dont forget the decomp pin needs to be in time also.
You can also use a 700 tensioner on the 660. Its a much better setup.
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Old 04-27-2011, 08:48 AM
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the decomp pins are in time how? those pins meaning the half moonlike plates with the springs on the gear?

what is different on the 700?
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Old 04-27-2011, 10:00 AM
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Yes, the weights have slots in them. Those slots fit around 2 pins on the decomp shaft on the cam. It also has a timing mark on it. It vgoes up as well.
The 700 tensioner workz on a ratcheting mechanism. I installed one on my 686 per Chris at Benchmarks recomendation.
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