Cam for 89" EVO?
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Cruiser
Joined: Aug 2014
Posts: 245
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From: Windsor, CO
Cam for 89" EVO?
I have an 89" EVO with an older S&S 502 cam, and I don't like it. It's too big, takes too long to come on. The motor is built on S&S cases (not that it really matters) HD jugs, Ross 9.8:1 pistons, factory heads w/83cc chambers and an S&S G. I have a track on an E right now, but I don't like the cam. I have been looking around a bit and the Andrews 27 looks ok, but I dunno. The motor is in a rigid frame chop, and might weigh 450lbs at most. Suggestions?
Road Warrior
Joined: Jul 2012
Posts: 1,566
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From: Londonderry, NH
I have an 89" EVO with an older S&S 502 cam, and I don't like it. It's too big, takes too long to come on. The motor is built on S&S cases (not that it really matters) HD jugs, Ross 9.8:1 pistons, factory heads w/83cc chambers and an S&S G. I have a track on an E right now, but I don't like the cam. I have been looking around a bit and the Andrews 27 looks ok, but I dunno. The motor is in a rigid frame chop, and might weigh 450lbs at most. Suggestions?
Go with the EV27.
Sponsor
Joined: Dec 2007
Posts: 12,084
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If spring room, a Wood 6H.
BTW, what is the gearing of this machine?(which could be the root issue)
Some "expert" builders like to put some looooooooooooooooong-legged gearing on a bike like that.
Steals it's ability for it to accelerate correctly.
Scott
BTW, what is the gearing of this machine?(which could be the root issue)
Some "expert" builders like to put some looooooooooooooooong-legged gearing on a bike like that.
Steals it's ability for it to accelerate correctly.
Scott
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Cruiser
Joined: Aug 2014
Posts: 245
Likes: 7
From: Windsor, CO
Didn't think about the gearing. It's a 48 in the back, and I'm pretty sure it's a 23 in the front. Hard to see behind the bearing support. I need to mark a tooth and roll it around and count them. Now that you mention it, this thing has way too much top end for a light little rigid. It'd be an easy change, specially since the chain is a little sloppy and would need a new one sometime in the near future.
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Cruiser
Joined: Aug 2014
Posts: 245
Likes: 7
From: Windsor, CO
Just looked at the 6h cam. WOW that is a tall cam! .631" lift? Can that be used with springs only, or is there some clearance work needed in the rocker box along with piston to valve?
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