ev27 upgrade question!
Tourer
Joined: Aug 2010
Posts: 320
Likes: 24
From: Hudson Valley
I wouldn't be as worried about valve to piston clearance as I would about valve to valve, spring bind and retainer to guide clearances.
So check your clearance, set your heads up correctly and you won't have any problems.
Stage III
Joined: Mar 2007
Posts: 3
Likes: 0
From:
so if i dont have valve to valve clearance issues I should be fine.
Would it make much difference to performance....or would it not be to noticable.
thanks for you input guys....really appreciated.
Banned
Joined: Sep 2008
Posts: 113
Likes: 3
Actually .525
Check for clearance in the top of the pushrod tubes as they get the added ratio by shortening that lever, thepushrod end of the rocker. Depending on the adjustable pushrods you use they potentially could hit.
Mill the heads .070 or you will see not much noticeable increase in power / torque
Check for clearance in the top of the pushrod tubes as they get the added ratio by shortening that lever, thepushrod end of the rocker. Depending on the adjustable pushrods you use they potentially could hit.
Mill the heads .070 or you will see not much noticeable increase in power / torque
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
All I mean is that the EV27 has been around a very long time. I fitted one to my bike 20 years ago, before we started playing with different ratio rocker arms. It seems to me mixing up an old favourite cam with modern rocker thinking, which may not work as well as with a different modern cam. That's all!
Tourer
Joined: Jul 2009
Posts: 307
Likes: 2
From: Ontario Canada
I just installed the Andrews EV27 on my bike (1996 FXDWG) last weekend with a new Torington bearing( make sure you check the cam end play) Andrews recomends .010-.015, mine was .013 , I used a .55 cam shim. Adj pushrods and a Dyna 2000 ignition. Wow it works awsome .A very good cam selection for sure.
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