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  #1  
Old 09-20-2008, 08:54 PM
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Default cam gear squeaze

I just put an EV23 cam and gear in about 3500 miles ago and just recently developed a squeak/whistle type noise that I couldn't locate with a stethascope so I decided to take a look in the cam case and found that the cam gear is getting squeazed between the cover bushing and the crankcase in the notch at the breather. There are no other signs of anything being out of place. Oh, the noise only occurs after reaching full operating temp. I found very little scuffing on the breather barrel but nothing serious. I don't see any specs on this in my manual but I'm getting old. Any ideas?
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  #2  
Old 09-21-2008, 09:49 AM
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There are different size washers to set cam depth, you also need to check gear pitch, if that's off andrews can send a cam with different pitch. Best thing to do is press the gear off your stock cam and press it on the new cam. A decent shop can do that for you, probably charge you 10 or 20 bucks. That gear needs to be positioned exactly like it was or you will change the cam timeing.
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  #3  
Old 09-21-2008, 10:56 AM
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Default cam squeaze

I found the cam specs in my manual and they are very minor like.0001to.0050
that ain't much. However it appears that the gear is thicker than the original bya very small amount I didn't myke it yet but I think that the crankcase is expanding and pushing against the crank side of the cam and then the cam in running tight against the cover bushing. I'm thinking maybe just get a dremel and grind the crankcase in the contact are and install a reed breather to liminate another sourse of frictional heat.
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  #4  
Old 09-21-2008, 11:34 AM
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Be easier to just use the correct thickness thrust washer, that's why they have different size washers. The length of the cam can vary some to. When I did mine I switched the gears and then spaced it correctly, no big deal. Remove the lifter blocks so you can get in there with a feeler gauge and then install the nose cone with a gasket, torque to spec. and check the end movement [ in and out ] with the feeler gauge. You will then know what thickness washer you need to be within spec. A noise like you described can be caused by the gear pitch being wrong, changing the gear is pretty simple.
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  #5  
Old 09-21-2008, 01:41 PM
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draggin:
o-sixs suggestions here are right on the money. Having your stock cam gear (press fit) R&R'd on to your new cam (correctly timed/positioned) saves a lot of un-neccesary grief & expense,etc.

You're saying that you've found the end play specs in your manual to be .0001 - .0050 which tells me that either you've got some after-market manual or you're misreading it..because according to the HD manual it should be .010-.050..and,if memory serves me Andrews reccomends .010-.020 You need a sufficient amount or end play to allow oil to get into those spaces..w/o having your cam just moving around in there too much..and like o-sixs said thrust washers are available in various sizes to adjust that gap the way he described or with a dial indicater. If you've set your end play at less than .010..NOT good !!

Did you replace your stock inner cam bearing with a new Torrington (T-138) bearing? If not that too could be the source of your problem/noises...noting that the stock bearing is prone to going away even with a stock cam and almost guaranteed to go away with anything hotter in most Evo engines.

Meanwhile, I like your idea of going with the S&S reed type breather..and will be doing that when I replace my lifters over this coming winter that have over 50-K miles on them and also seem to be one of the few weak links in Evo engines.
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Last edited by evoKENevo; 09-21-2008 at 01:48 PM.
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  #6  
Old 09-21-2008, 02:27 PM
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Thanks all. Your input is greatly appreciated.
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  #7  
Old 09-21-2008, 02:47 PM
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I just checked my manual it's a real harley one PN 99483-97A page 3-1 cam gear shaft .00075to 00175
cam shaft and bearing loose .0005to .0025
cam gear end play loose .0001 to .050
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  #8  
Old 09-21-2008, 06:48 PM
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"Ooops"...a typo on my part, as far as MINIMUM end-play goes HD wise...would'nt go THERE myself,anyhow, and would'nt go with their MAX either..

Just double checked my Andrew's install instructions (kept in shop manual) and they call for .010-.015 end play...hope this helps
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Last edited by evoKENevo; 09-22-2008 at 05:22 AM.
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