ev27 upgrade question!
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Stage II
Joined: May 2007
Posts: 2
Likes: 0
ev27 upgrade question!
i have a 1990 softail custom with a stock L grind camshaft. I have a andrews ev27 that i was going to install but i have heard that its not worth upgrading as the stock L grind is very similar to the ev27. So what im asking for is your opinions if i should put in the ev27 or keep the L grind in there?
Cruiser
Joined: Dec 2010
Posts: 102
Likes: 1
From: Canada
Depends what you want...The L has no overlap..very smooth running cam..The 27 has a much nicer idle, however they can be noisy ..tic tic tic..As far as power I doubt you would see much difference.I have changed 3 cams in a weekend to decide which one I liked best..half the fun is working on them....
Tourer
Joined: Dec 2007
Posts: 265
Likes: 14
From:
I absolutely love the EV27. I had it in my 91 FLHS and that thing pulled wheelies!! I had some 9.8/1 heads on it too so as mentioned, a little increase in compression does help. It is a fast ramp grind so it can be noisy so I highly recommend you use your stock cam gear instead of Andrews. If your stock cam gear is worn then have a machinist measure the Andrews gear and find out what color code matches it then buy a crank gear to match it. Andrews says they have a color code red gear but I just did my neighbors bike and it was too tight so I measured it and it was a color code black!! Now he has to buy a different crank gear! If you get the gears matched correctly it won't be loud, mine wasn't. Enjoy it, it makes a really flat torque curve and even gets good mileage!!
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
I fitted an EV27 into my stock 1990. The only other mods were SE air filter, Crane ignition module and spiked mufflers. A significant and worthwhile improvement. Rode it that way for several years until I decided I wanted even more! You could simply fit it and try it. If you like it, the mods Scott suggested will make it even better! You won't be disappointed.
Last edited by grbrown; Jan 9, 2011 at 05:57 PM. Reason: Spelling!
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
Should be a great improvement for you.
You can actually remove another .040" (.080" total) from the head, with the .030" gasket, and you'll like it even more.
I was being conservative with my .065" suggestion.
Scott
You can actually remove another .040" (.080" total) from the head, with the .030" gasket, and you'll like it even more.
I was being conservative with my .065" suggestion.
Scott
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Stage III
Joined: Mar 2007
Posts: 3
Likes: 0
From:
has anyone tried an Ev27 with 1:1.675 ratio roller rockers.
I'm looking at doing this but i am concerned about problems such as the valves hitting the pistion or not having enough spring movement.
can any advise?
thanks in advance
I'm looking at doing this but i am concerned about problems such as the valves hitting the pistion or not having enough spring movement.
can any advise?
thanks in advance
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Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
I think you'll find the EV27 predates those rockers!