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Cam bushings to bearings

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DRGN RYDR

Posts: 6

Joined: Mon Nov 10, 2008 11:58 am

Post Thu Jan 15, 2009 9:14 pm

Cam bushings to bearings

I am hearing that there is a bushing/bearing swap for 45". Anyone have any info on this?
Thanks
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k dogg snr

Posts: 56

Joined: Mon Aug 27, 2007 3:23 am

Location: new zealand

Post Fri Jan 16, 2009 1:25 am

Re: Cam bushings to bearings

there are a few choices avaliable . i have converted to timkin caged needle rollers . they are a direct fit and require no machining of the cases , i did however have to make small oil feed holes in the brg cases to align with the oil feed holes in the engine cases. be careful when fitting the brgs that they clear the crankpin nuts. also you will have to make some thrust washers to fit on each end of the cams so the cams dont wear thru the brg housing or the alloy casing. i have also seen timkin roller brgs fitted simillar to that found in a skate board wheel ( larger size of course ) i think they are a sealed roller brg but will require the cases to be machined .
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panic

Post Sat Jan 17, 2009 8:55 am

Re: Cam bushings to bearings

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Last edited by panic on Mon Jan 19, 2009 10:41 am, edited 1 time in total.
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MOLDTHREAD

Posts: 118

Joined: Fri May 04, 2007 5:46 am

Location: BRANFORD, CT

Post Sat Jan 17, 2009 9:11 am

Re: Cam bushings to bearings

Hi Panic,

Can you fill me in on the "sportster eyeglasses"
I'm just finishing up the machining on the WR Peek-A-Boo cover and will also be machining the casting for the bushing models.
I have been looking into using needle bearings for the standard bushing shafts, but am cancerned about the amount of press fit in standard cases, oiling on the cam cover bearings and retaining the ones in the engine side.
I've got photos of the raw castings on my website http://www.enfieldracing.com

Thanks,
Bruce
Bruce Argetsinger
AHRMA Dirt Track # 67J
www.enfieldracing.com
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Tim 435

Posts: 741

Joined: Mon Sep 01, 2003 12:01 am

Location: Pa. , USA

Post Sat Jan 17, 2009 9:42 am

Re: Cam bushings to bearings

Sportster eyeglasses, (#25551-58 cam gear plate) used on engine case side as thrust washer when using #9057 needle bearings , note ; may have to trim from the top side of plate if tappet drops against them depending on your cam grind, Tim
Vintage roadracing, Class C, AHRMA # 335
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MOLDTHREAD

Posts: 118

Joined: Fri May 04, 2007 5:46 am

Location: BRANFORD, CT

Post Sat Jan 17, 2009 11:52 am

Re: Cam bushings to bearings

Thanks Tim,

Anybody got a picture of one?
Bruce Argetsinger
AHRMA Dirt Track # 67J
www.enfieldracing.com
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Beachdog

Posts: 765

Joined: Mon Oct 16, 2000 12:01 am

Location: CA USA

Post Sat Jan 17, 2009 12:39 pm

Re: Cam bushings to bearings

Bruce,
Pretty good drawing in the ironhead parts book.
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k dogg snr

Posts: 56

Joined: Mon Aug 27, 2007 3:23 am

Location: new zealand

Post Sun Jan 18, 2009 2:19 am

Re: Cam bushings to bearings

in my previous comment re oil feed holes i totally meant holes in the cam cover. the brgs in the engine case are splash mist dribble fed . i made spacers because the cams had alot more end float once the brgs were fitted so i cut the ends from the old cam bushes, machined to fit over the od of the cam brgs and pinned them to both inner cases where the cams run , i then pre assembled the cases with cams and bush ends [ brass thrusts ] in place and remeasured the end float so i could determine the thicknesses of the steel thrust shims i needed to get the correct spec end floats. there is no doubt an easier way . i have a lathe so it seemed the most logical way of doing it. we dont have easy acces down here to a lot of old parts so we tend to make things out of other things ;thats why i didnt use the sportster eyeglasses; that would be the easiest choice if ava . for example a blue flame inlet valve is harder to find in nz so to do the larger valve i used a bedford 300 truck valve , i shortened it about 8mm and reground a groove in it to fit the origonal hd keeprs and it was a perfect fit in the hd guide . re hardened the end . thanks.
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MOLDTHREAD

Posts: 118

Joined: Fri May 04, 2007 5:46 am

Location: BRANFORD, CT

Post Sun Jan 18, 2009 9:20 am

Re: Cam bushings to bearings

ICE MC has a kit listed on his website http://www.icemc.com
Bruce Argetsinger
AHRMA Dirt Track # 67J
www.enfieldracing.com
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panic

Post Sun Jan 18, 2009 11:08 am

Re: Cam bushings to bearings

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Last edited by panic on Mon Jan 19, 2009 10:41 am, edited 1 time in total.
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panic

Post Sun Jan 18, 2009 11:09 am

Re: Cam bushings to bearings

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Last edited by panic on Mon Jan 19, 2009 10:42 am, edited 1 time in total.
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MOLDTHREAD

Posts: 118

Joined: Fri May 04, 2007 5:46 am

Location: BRANFORD, CT

Post Sun Jan 18, 2009 2:44 pm

Re: Cam bushings to bearings

Thanks Panic,

This is greatly appreciated.
I assume that converting a WL to needle bearings 3 of these could be used,2 on the engine ends of each cam, and 1 on the cover side of # 3 & 4.
The photo looks like steel, is it hardened?
It would go right against the cases and be the same thickness as the flanges on the bushings, the shims would then go between this piece and the cam?

Bruce
http://www.enfieldracing.com
Bruce Argetsinger
AHRMA Dirt Track # 67J
www.enfieldracing.com
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panic

Post Sun Jan 18, 2009 5:39 pm

Re: Cam bushings to bearings

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Last edited by panic on Mon Jan 19, 2009 10:42 am, edited 1 time in total.
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k dogg snr

Posts: 56

Joined: Mon Aug 27, 2007 3:23 am

Location: new zealand

Post Mon Jan 19, 2009 12:54 am

Re: Cam bushings to bearings

i replaced all the bushes in the engine case with caged needle rollers and three in the cam cover/housing . the only one i didnt replace was the outer bush for the cam that runs the oil pump. and yes do make sure that whatever u use doesnt interfere with a# the crank nuts and b# the cam followers esp on their downward stroke .
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George Greer

User avatar

Posts: 961

Joined: Wed Aug 28, 2002 12:01 am

Location: Markt Einersheim, Germany

Post Mon Jan 19, 2009 6:32 am

Re: Cam bushings to bearings

Anybody got photos of how this should look, after all parts are properly installed.

Engine side and camcover side?

George
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MOLDTHREAD

Posts: 118

Joined: Fri May 04, 2007 5:46 am

Location: BRANFORD, CT

Post Mon Jan 19, 2009 7:58 am

Re: Cam bushings to bearings

I just saw that the spectacles can't be used on the WL cover side because the bushings are at different depths.
The end play is to the the side faces of the gears and cams, where as on the WR the end play is controlled by the bearings which fit to shoulders on the shafts.
Could this be the reason the were not used on the cover side of the sportster?

Bruce
http://www.enfieldracing.com
Bruce Argetsinger
AHRMA Dirt Track # 67J
www.enfieldracing.com
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Beachdog

Posts: 765

Joined: Mon Oct 16, 2000 12:01 am

Location: CA USA

Post Wed Jan 21, 2009 8:40 am

Re: Cam bushings to bearings

Bruce,
Here is a pic of how to put xl needle bearings into the cam cover.
http://cgi.ebay.com/ebaymotors/ws/eBayI ... &viewitem=
This appears to be a modified mid 1939-up WLDR cam cover.
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Oldschool

Posts: 20

Joined: Mon Sep 26, 2005 1:29 pm

Location: Muncie, IN

Post Wed Jan 21, 2009 10:37 am

Re: Cam bushings to bearings

Do not have any affiliation or product knowledge, but found this site when researching this subject. Hope it is of some use.
Regards,
http://www.icemc.com/product_-_bearings
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Tim 435

Posts: 741

Joined: Mon Sep 01, 2003 12:01 am

Location: Pa. , USA

Post Wed Jan 21, 2009 6:14 pm

Re: Cam bushings to bearings

DRGN RYDR , FYI over the past 15 years i converted 3 race 45's to needle bearings using big cams and valve springs and never had a failure :wink:
( knock on wood )
Vintage roadracing, Class C, AHRMA # 335
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DRGN RYDR

Posts: 6

Joined: Mon Nov 10, 2008 11:58 am

Post Thu Jan 22, 2009 7:48 am

Re: Cam bushings to bearings

Tim 435 wrote:DRGN RYDR , FYI over the past 15 years i converted 3 race 45's to needle bearings using big cams and valve springs and never had a failure :wink:
( knock on wood )

Thanks
I have found an article detailing how to and bearings to use.
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