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Old 1 Week Ago   #16
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Re: Maximum ignition advance for 650 engines

Quote Originally Posted by gordinir8 View Post
By the way check this "adjustable" timing disc.
https://www.blocklayer.com/degree-wheel.aspx
That looks very interesting and I will bookmark to check it out later. Would that be used for setting the position of the camshaft sprocket when fitting a non-standard camshaft?

It made me look at the valve timing specifications in the manual and that reveals a whole other can of worms. There are at least two different factory camshafts available for the 650 with distributor (Haynes). The 594 camshaft is different and maybe the same as the 499? Most suppliers list one type of standard camshaft as suitable for all engines in the range.

The FIAT timing tool was won by one lucky and stupid bidder who can't stop collecting all things Fiat 500.
But when it is delivered to me I can make a life-sized paper-rubbing of it for you as I don't think it would be difficult to make one once you had the pattern.
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Old 1 Week Ago   #17
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Re: Maximum ignition advance for 650 engines

I really like to have this original tool in my toolbox, I have search in the past with no success for it. At list it is in good hands so I definitely need an exact copy of It, maybe a scan so I can fabricate one out of aluminium. I will also make a timing disc. All I need is a 650 motor!
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Old 1 Week Ago   #18
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Re: Maximum ignition advance for 650 engines

Valve-timing discs can be obtained from a number of camshaft manufacturers at a very reasonable cost---much easier and more accurate (and much more cost effective) than trying to make one. Both 'KENT' and 'PIPER' cams can supply them for about 10 plus carriage.
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Old 1 Week Ago   #19
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Re: Maximum ignition advance for 650 engines

[QUOTE=It made me look at the valve timing specifications in the manual and that reveals a whole other can of worms. There are at least two different factory camshafts available for the 650 with distributor (Haynes). The 594 camshaft is different and maybe the same as the 499? [/QUOTE]

I have found those numbers
20/50 50/20 for the 500 ''Haynes has 25/51 64/12'' for the 110F
26/56 66/16 for the 600
18/53 72/24 for the 650
Obviously every engine or even model has a different cam.
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