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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #1  
Old 15th July 2012
goirish64 goirish64 is offline
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Default cam thrust washers

Took the cam cover off of my 77 xlh 1000 today and noticed as i did that only one of the cams had a thrust washer on it. i looked at my clymer manual and it showed all of them having this washer. someone was in the motor before ( has s&s flywheels and connecting rods) and i was wondering if anyone would know why they wouldnt be there or if anyone has seen something like this before.
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  #2  
Old 15th July 2012
GA_Ironhead GA_Ironhead is offline
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Shims or no shims is a contentious issue. The best advice I can offer is to educate yourself and then decide if you think you need/want them.

http://xlforum.net/vbportal/forums/s....php?t=1003853
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  #3  
Old 15th July 2012
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No thrust washers, but there are cam gear plates [AKA dog bones, figure 8s] and cam shims. Presumably you mean the shims?
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Old 15th July 2012
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Was it only the #2 cam w/ the points that was shimmed?
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Old 15th July 2012
goirish64 goirish64 is offline
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yeah iron mick it was the cam shims between the bushings and the actual cam. i dont know if its aftermarket camed or not, but i cant find any marking on the cams. and yeahchevelle its the rear cylinder intake cam, the one that drives the points
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Old 16th July 2012
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It could be that only the one cam needed to be shimmed. You can either toss all the shims or go thru the process and set them all up to between .015 and .020 [i think that is what we agreed on]. Most agree that the spec in the FSM should not be used.
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Old 16th July 2012
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I set mine up right around .015 mark never herd an iron so quite,if you go tighter as the manual says it means check this every season...
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Old 16th July 2012
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The #2 cam gets a seal, so it would be the most important to keep from walking I would assume.
Same goes for the ign rotor/advance unit bolted to that cam.
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Old 16th July 2012
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Probably gonna toss them mick the noise doesn't bother me but I wanted to make sure it wasn't overly critical. Thanks for the continued help!
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Old 17th July 2012
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i'm,kind of surprised you went back with them at .015,timberjack.didn't you find alot of them in your oil pump,after disassembly?
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