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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 28th February 2008
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Default timing oil pump

i timed my 1974xlch oil pump with my cam timing marks. is that right if so somEbody please let me know thanks............mark
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  #2  
Old 28th February 2008
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ok yaw i called my local harley mechanic here in sc. rob steele who owns steele cycles. it was confirmed that when your cams are in there timing marks. and the vent hole in the oil pump should be visible in the notched part of the pump this is on a 1974xlch i looked in this forum couldnt find the answer so here it is. for whom ever needs to know this. i know if not in timed it will create heating issues
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  #3  
Old 28th February 2008
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Originally Posted by 74chopster View Post
i timed my 1974xlch oil pump with my cam timing marks. is that right if so somEbody please let me know thanks............mark
I just lined my 75 up the other day. I'm a little weirded by the fact that there's stock intakes in there, but andrews pb+ exhaust, but it should be fine.... right?

When I was lining up the timing holes, I locked the engine at rear TDC (Vertical line in the timing hole for me), then I slipped on the worm gear the drives the oil pump (no good picture of this), and it had a mark pointing straight up. I lined this up with the oil pump's dot sitting right in the notch. It took a few tries to roll it into place but all was good. Then I lined up the pinion gear and everything looked like what you see below. Was everything the same for you?

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Old 28th February 2008
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Yep,

That's the right procedure for timing the oil pump.

Patrick
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  #5  
Old 28th February 2008
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Ive timed mine in the past before but forgot its had been a while. and this same processes works for my andrews y series cams so it'll do the same for bp+ cams
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Old 1st March 2008
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Looks right to me. When my boyfriend's motor came, I noticed the cam cover on this new "professionally" rebuilt engine wouldn't seat properly, so I removed it and lo and behold the cams were all out of whack. I re-installed the cams and now it seats just right.

Maybe it's my fault for not asking what sort of "professional" rebuilt the engine... a professional lettuce picker or what?

Now I need to go through this gem & see what else was professionally overlooked.
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Old 1st March 2008
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Originally Posted by Rush View Post
Looks right to me. When my boyfriend's motor came, I noticed the cam cover on this new "professionally" rebuilt engine wouldn't seat properly, so I removed it and lo and behold the cams were all out of whack. I re-installed the cams and now it seats just right.

Maybe it's my fault for not asking what sort of "professional" rebuilt the engine... a professional lettuce picker or what?

Now I need to go through this gem & see what else was professionally overlooked.
WHOA... she fixed her BF's bike...... DAAAAMMMMNNNN... lucky guy...
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  #8  
Old 13th May 2008
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ok so let me get this straight... i need to reinstall my oil pump... so with my cams all lined up with the timing marks all i have to do is install the pump with the breather hole lined up wiht that notch?
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Old 13th May 2008
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Quote:
Originally Posted by rvwalke View Post
ok so let me get this straight... i need to reinstall my oil pump... so with my cams all lined up with the timing marks all i have to do is install the pump with the breather hole lined up wiht that notch?
Yup. If you pull that normal gear off of the drive shaft, you'll see a pinion gear under it that drives the oil pump. The pinion gear has a mark on it, point that straight up in the air, while the oil pump's mark is in the notch. This will time your breathing. Then put that normal gear back on and all of the cams back in so the marks line up. Sounds simple, right? If you've got these off anyway, you might want to look into measuring the cam spacing and replacing the spacers if necessary. Mick's got a sticky on it.
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  #10  
Old 13th May 2008
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so lets say after its all together that hole is slightly off from that notch... what kind of problems might one run into running it this way?... just curious
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