Reconditioning Camshaft

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frankfast
Posts: 231
Joined: Wed May 05, 2010 12:35 pm
Location: New York (upstate)

Reconditioning Camshaft

Postby frankfast » Thu Apr 30, 2020 3:14 pm

I have a 350 Scrambler camshaft that was excessively worn due to a severed oil pump. I replaced it and the rockers with a 250 Scrambler cam and screw type adjustable rockers. Can the 350 cam be reconditioned possibly by building up the lobes on the cam with weld? Has anybody done this? It looks like the damage was limited to the cam and rockers because the bike runs fine with the new setup. All the bearing seem to be fine and there is no noticeable noise.

Duccout
Posts: 1450
Joined: Wed Feb 05, 2020 1:20 pm
Location: Essex UK

Re: Reconditioning Camshaft

Postby Duccout » Thu Apr 30, 2020 3:25 pm

It definitely can be done, there are companies in the UK that do it (usually, I believe with stellite weld) so there must be equivalents in the U.S.

If not, there is a small company in Britain called Joy Engineering who are well-known to posters on here who can do the job; it is not cheap though, I believe that the charge for the cam is around £120 and rockers £30 each.

double diamond
Posts: 557
Joined: Thu Apr 28, 2011 1:20 am

Re: Reconditioning Camshaft

Postby double diamond » Thu Apr 30, 2020 9:40 pm

Webcam in Riverside, California will hardweld and regrind your cam. They can recondition your rockerarms as well. Another vendor is Megacycle cams in the SF Bay Area.
Matt

frankfast
Posts: 231
Joined: Wed May 05, 2010 12:35 pm
Location: New York (upstate)

Re: Reconditioning Camshaft

Postby frankfast » Fri May 01, 2020 12:42 am

Thanks guys. Better to find someone here in the states.

gregwils
Posts: 180
Joined: Mon Jun 27, 2011 2:56 am

Re: Reconditioning Camshaft

Postby gregwils » Mon May 04, 2020 12:22 am

I have also have an old air-cooled Porsche, there is a guy named John Dougherty that is fairly well known and endorsed on the Porsche forums. His name is John Dougherty, here's his website www.drcamshafts.com. I don't know if he does motorcycle cams, but if he doesn't he may be able to refer you to someone that does.
Greg W
1965 Ducati Monza
1966 Ducati Monza (Project)
1966 Ducati Monza Jr
1986 Porsche 911 Carrera
Pittsburgh, PA USA

marsheng
Posts: 40
Joined: Sun May 18, 2014 4:14 pm
Location: New Zealand
Contact:

Re: Reconditioning Camshaft

Postby marsheng » Wed Jun 03, 2020 10:59 pm

Is there anywhere you can but new race cams ? They may be better priced than having them rebuilt?
1964 - 250 MK3 ... 1980 - 900 SSD ... 1977 - 500 GTL Parallel twin ... 1980 - 500 Pantah ... Plus a 'few' others.

graeme
Posts: 1006
Joined: Sun Mar 25, 2012 12:00 am
Location: Tasmania Australia

Re: Reconditioning Camshaft

Postby graeme » Wed Jun 03, 2020 11:34 pm

Nigel Lacey. Lacey Ducati UK

marsheng
Posts: 40
Joined: Sun May 18, 2014 4:14 pm
Location: New Zealand
Contact:

Re: Reconditioning Camshaft

Postby marsheng » Thu Jun 04, 2020 12:49 am

Thanks I found the page on Nigel's site with the cam. With the exchange rate (which is poor) and shipping, that equates to nearly $700 NZ. If it was only the cam fine, but with a full rebuild, I have to watch the pennies (actually Pounds). Rims, spokes, tank, fairing, seat, running gear, valves etc Ouch Ouch Ouch.

Cheers Wallace.
1964 - 250 MK3 ... 1980 - 900 SSD ... 1977 - 500 GTL Parallel twin ... 1980 - 500 Pantah ... Plus a 'few' others.

Duccout
Posts: 1450
Joined: Wed Feb 05, 2020 1:20 pm
Location: Essex UK

Re: Reconditioning Camshaft

Postby Duccout » Thu Jun 04, 2020 6:50 am

What about VeeTwo and Road and Race in Australia? Vee Two used to make race cams and Road and Race list reground to racing spec.

double diamond
Posts: 557
Joined: Thu Apr 28, 2011 1:20 am

Re: Reconditioning Camshaft

Postby double diamond » Sat Jun 06, 2020 7:23 pm

Ian Gowanloch in Australia might have affordable options for you, new-used.
Megacycle in California has two billet cams in their catalog. The softer option is probably suitable for street use. If you could convince them to ship by US Post Office international small flat rate box cost is only US$27.50.


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