SE Evo Heads

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#21

07-28-2017, 09:51 AM

IBDAGRIZ

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Quote:

Originally Posted by Ruggs59

Could you install a set of SE Evo heads on this motor? Stock 1998 14K miles. Now last year I put a VThunder 3010 cam, new cam bearing and S&S lifters with Primo adjustable push rods. I was offered a set of New in the box SE Evo heads for real cheap. Id rather not change the cam again. 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?

You'd really love those heads with a V-Thinder -Xtreme Energy 5010 in it. Really nice on a bagger..

Griz

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#22

07-28-2017, 05:25 PM

1997bagger

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Quote:

Originally Posted by tjhog

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 ... ???

Believe they did in a 10.5-1 set up and a SE57 was it's mate. The SE heads seemed to follow the original Branch Heads in design plus dome pistons to fit the bathtub chambers like Branch

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#23

07-28-2017, 05:29 PM

98hotrodfatboy

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Quote:

Originally Posted by 1997bagger

Believe they did in a 10.5-1 set up and a SE57 was it's mate. The SE heads seemed to follow the original Branch Heads in design plus dome pistons to fit the bathtub chambers like Branch

How well did that setup do?

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#24

07-28-2017, 10:16 PM

1997bagger

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Quote:

Originally Posted by 98hotrodfatboy

How well did that setup do?

http://www.nightrider.com/biketech/hplist_evo80.htm

Several dyno runs listed with SE heads, my man John Sachs in there with a 109 hp 80" with SE Heads. Some 10.5 SE Head 80" posted, Cyclerama has a 132 hp SE headed 80" listed, they can produce some HP if the dynos's are not on the "happy" side, Sachs told me there are happy dyno's making runs.

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#25

07-30-2017, 06:47 AM

Dan89FLSTC

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Base gasket change is a must, and consider having a competent machinist true the bottoms of the cylinders, this will help prevent any future base gasket issues.

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#26

07-30-2017, 08:48 AM

98hotrodfatboy

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Quote:

Originally Posted by Dan89FLSTC

Base gasket change is a must, and consider having a competent machinist true the bottoms of the cylinders, this will help prevent any future base gasket issues.

Good advice there......

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#27

07-30-2017, 10:02 AM

Anthony Paul

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Quote:

Originally Posted by Dan89FLSTC

Base gasket change is a must, and consider having a competent machinist true the bottoms of the cylinders, this will help prevent any future base gasket issues.

At this time you should figure your squish band before you machine the bottom of your cylinders. It's often over looked and performance may suffer.

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#28

07-30-2017, 10:21 AM

Bingee

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This pdf shows some of the specs for the SE Heads. Fairly easy install. Just check all clearances.

Attached Files

SE_Performance_Heads.pdf (269.0 KB, 720 views)

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#29

07-30-2017, 10:38 AM

1997bagger

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Quote:

Originally Posted by IBDAGRIZ

You'd really love those heads with a V-Thinder -Xtreme Energy 5010 in it. Really nice on a bagger..

Griz

Ran the V Thunder 5005 with SE heads, 89" sure was a neck snapper down low, didn't understand combination numbers or tuning back then and had trouble with detonation. Today with a carb that engine setup would live and be a torque monster, Sachs got on me hard "throw that junk M&M system and put a carb on it, what is wrong with you" learned at the University School of Mistakes.

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