Which cam is right??
Stellar HDF Member
Joined: Mar 2006
Posts: 2,395
Likes: 153
From: Utah
Don't cut corners and if you're lucky, you will get 130k out of that engine according to testimonials I have seen.
Personally, unless you have a really strong feeling about this bike, I wouldn't worry about cams. Exhaust and a free flow air cleaner would be a better investment. Half the cost per h.p. You will have to take the cams out, however, to change the inner bearings (if yours aren't torringtons). I doubt that you will need lifters or push rods but using adjustable push rods makes for easier changes later (and/or checking your tensioner shoes). You will need to change cams, however, if you are going to get an inner roller chain.
If you are worried about $ and aren't going to do the work yourself, then I would change the tensioners, the inner cam bearings, and the pushrods and get the ac/exhaust upgrade. Period. You got 40k+ out of your existing tensioner shoes. Some say that the new hydraulic design isn't any better. Once you have the adjustable push rods, anybody with a little bit of mechanical skill and experience can keep changing the tensioners for a total cost of $200. That's cheaper than tires per mile.
Of course, you may find that you have no choice but to change other stuff, like your cams that are worn.
C#
Grand HDF Member
Joined: May 2008
Posts: 4,624
Likes: 189
From: Newcastle, Ca.
21's make more compression then the other cams mentioned for your application. Compression = tq.
http://www.bigboyzheadporting.com/TwinCamComp.htm
That being said, none will rip your arms off with out more work like BB kit, headwork...
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http://www.bigboyzheadporting.com/TwinCamComp.htm
That being said, none will rip your arms off with out more work like BB kit, headwork...
.
.
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magnum629c
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Jul 1, 2013 07:52 PM
