SE Evo Heads
Road Master
Joined: Jun 2011
Posts: 836
Likes: 230
From: Deep South
Ignition
With a Bump in compression ....you may want to see about a upgrade for the ignition module also ..(if you don't have one already) ... to get the full advantage of the heads and cam ..an adjustable one would be best ...are you will have a very hard hitting and vibrating motor ....
if you want to sell the stock heads ...when your done ...i will take them !!!
if you want to sell the stock heads ...when your done ...i will take them !!!
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Road Master
Joined: Jan 2013
Posts: 1,005
Likes: 103
From: Ghent NY
Thanks for all the responses, Its a no brainer. Ill grab them and install. Having never removed Evo cylinders can I assume after I remove the heads just lift the cylinders enough to slip the wrist pin out so as to leave the piston in the cylinder. . would like to do the base gaskets to. (yes I have the service manual) and better start reading it.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,028
Likes: 7,549
From: Poolville
That would be correct Dave. Just lift cylinders enough to push out the pins.... After you pull the cylinder heads off take a couple pieces of PVC three-quarter inch pipe and Bolt the cylinders back down. Both cylinders and check your piston how far down in the hole they are. You might be able to use a .010" base gasket to help pop the comp even a little more. Cometic is all I use.. it will actually help the burn with a tighter squish of around .035".
Grand HDF Member
Joined: Oct 2009
Posts: 3,918
Likes: 3,715
From: Hill Country, TX
Originally Posted by Ruggs59
From what I read the SE head can be used with stock pistons and will raise the compression to 9.5. What's your thoughts on just removing my heads and bolting the SE one on? Any gain to be had?
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,028
Likes: 7,549
From: Poolville
A street port stage I is approximately $600. The SE heads are stage I... but for $300. or real cheap....
Dave have you measured where the pistons are in the hole? Can you benefit from a .010" base gasket?
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Road Warrior
Joined: Jan 2015
Posts: 1,949
Likes: 53
From: NoNV
Can't remember for sure, but I do believe that H-D does (or ... did ) make a Screamin' Eagle domed piston just for these heads ... Anyone ... ???
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,028
Likes: 7,549
From: Poolville
Yes they did....