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Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

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Old 23rd November 2006
irony irony is offline
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Default How can I identify my cams?

I have the bottom end apart on my 78 sporty.The guy I got the bike from says he thinks the cams are Andrews 'A' grind. I cant find anything fitting that discription in any catalouges. The only marks on the cams are on the back of the gears -1p ,2p, 3p, 4p. Any way to tell what kind they are ?
IRONY.
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Old 23rd November 2006
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THOSE CAMS ARE "p" CAMS STOCK H-D. THEY WERE A STANDARD CAM H-D PUT IN THE IRONHEADS. THE #'S DEIGNATE WERE THEY GO. NUMBERED 1-4 STARTING WITH THE REAR EXHAUST CAM =1 REAR INTAKE=2 FRONT INTAKE=3 FRONT EXHAUST=4. I HOPE THIS HELPS.
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Old 23rd November 2006
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i noticed that you have a 78 xlch. that particular motor should have had "pb" cams in it. sounds to me like someone changed them. the "pb" style cam was a performance oriented stock h-d cam. the had longer duration and slightly higher lift. than the "p" style cams.
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Old 23rd November 2006
irony irony is offline
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Thanks for the info SCAGNETTI! Seems the previous owner GOT TOOK. He thought he had perfofmance cams installed. He also thought the cylinder wre bored 10 over with new pistons but when I took it apart it still had stock pistons and the cylinder measure standerd bore .
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Old 23rd November 2006
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It sounds to me like someone has done a stock rebuild to it. i highly doubt that stock 1970's hardware has lasted this long. what part numbers are the cylinders? -57?
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Old 23rd November 2006
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where on the cylinders is the part #. I think I'l have to scrape off some wrinkle paint to find them
Thanks.
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Old 23rd November 2006
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The part # should be on the thick flange on the base of the cylinder. facing the left side of the bike. if you were sitting on it.
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