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Join Date: Nov 2007
Location: Chandler, Arizona
I found several VN750 cams on eBay. As an auto mechanic, I would never put an engine back together with used internal parts other than in a serious emergency. Even if they look good, you have no way of knowing what kind of stresses used parts have been subjected too. I always start with a block and heads, and if they pass my visual inspection and all the measurements check out, I have them hot tanked and magnafluxed to check for cracks. Then I have all the machine work done before installing new parts.
The cams you are talking about may very well work, but for how long? Consider the amount of labor it takes to install them, and the consequences if they fail. I guess it comes down to a lot of things, the overall condition of the bike, how long you intend to keep it, and how you intend to ride it (long highway trips or mostly locally), how much your time and labor is worth, and what the bike means to you. If the bike has high mileage or shows more than a tiny bit of wear, I'd go ahead and use them. And also look for any other signs of damage that a loose chain might have caused.
One of the problems I have always had with the Vulcan engine is it's overly complex design, and the price of new parts. To me, this makes it a disposable engine. If you are just trying to get some more miles out of it, then decent used parts make sense. When you install them, make sure you check the clearance between the cam journals and the head. If it is too loose, the cams are unusable. Also check the cam lobes themselves for wear.
Oh, and I suggest some genuine TOC manual tensioners. I noticed someone is trying to sell converted ACCTs on eBay as manual tensioners. If you want to go that route, convert your own. It's a whole lot cheaper.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike