Headwork suggestions please
Thread Starter
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Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
Headwork suggestions please
So my riding days are limited I'm thinkin it's almost time to do my 117 upgrade to my lowrider s. I was thinking of having the heads ported and polished while they're off. has anyone done anything like this to their bike? If so how did it work out? Gains? Problems? Reliability? What exactly did you have done? Thank you for any info
Last edited by Nickd2689; Dec 9, 2016 at 06:42 PM.
Grand HDF Member
Joined: Sep 2010
Posts: 3,580
Likes: 215
From: Illinois
It's all in the heads! Definitely don't skimp on that cause if you do don't matter how big you go a smaller displacement with good head work will kick your ***.
Choose a builder of your choice. I would recommmned Baisley or Hillside Cycles.
Talk to them and open those suckers up.....you wouldn't be going for a 117 if you didn't want speed and HP.
Choose a builder of your choice. I would recommmned Baisley or Hillside Cycles.
Talk to them and open those suckers up.....you wouldn't be going for a 117 if you didn't want speed and HP.
Cruiser
Joined: Aug 2016
Posts: 232
Likes: 59
From: Round Rock TX
I just posted a dyna s 117 build we did in the dyno section take a look at it and yes do head work while your in there. Baisley is arguably the best Porter there is so open your wallet and I would bet he will not let you use the 117 bolt on kit wit the hd cams with his heads no point in that choose better cams for his heads and compression etc. I have never seen baisley and hillside used in the same sentence two completely different levels of head work. I would call some porters and see what you are looking for then go from there. its all in the head work and what you want to spend
Stellar HDF Member
Joined: Sep 2012
Posts: 2,099
Likes: 214
From: Delawere
I would/did go with these guys...Worth a call. Great bunch of guys.
http://rrcycles.com/cart/index.php?m...6e28fc754c43ce
http://rrcycles.com/cart/index.php?m...6e28fc754c43ce
HDF Community Team
Joined: Jun 2008
Posts: 4,756
Likes: 951
From: Out West
Where are we on this, we should be looking at heads and cylinders off by now at least, pictures man, pictures!!! 
You know you have to make a thread and take and post copious amounts of photos right, I mean, that's a given, it's winter, and we have needs!
Here is an already mentioned option: http://www.baisley.com
Call them up, talk to Dan.
You know you have to make a thread and take and post copious amounts of photos right, I mean, that's a given, it's winter, and we have needs!
Here is an already mentioned option: http://www.baisley.com
Call them up, talk to Dan.
Thread Starter
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Stellar HDF Member
Joined: Feb 2016
Posts: 2,066
Likes: 259
From: Northstreet, michigan
Lol I still haven't started, I'm trying to decide whether or not I'm going to have the crank modified as I'm not looking for crazy numbers because I want to keep my bike reliable. I would be happy with 120 hp/tq. When I do the build I will have a thread for it and I will post a lot of pictures.
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Road Captain
Joined: Jun 2007
Posts: 632
Likes: 85
Has anyone used Jerry Branch's old Flowmetrics for head work on a Twin Cam? I've used them with great success in the past with Shovelhead and Evo motors.
http://www.branchokeefe.com/heads.html
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http://www.branchokeefe.com/heads.html
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Road Captain
Joined: Dec 2014
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From: Fl
Seasoned HDF Member
Joined: Apr 2014
Posts: 5,809
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From: UK
Something like this:
"The stock 2013 heads were received, disassembled, soda blasted and then reassembled and flow tested. The stock guides were removed and all ports were profiled including the short side radii, bowl, guide boss and throat areas. The port entrances were matched to the manifold outlets and the combustion chamber was polished. The intake seats were replaced to allow fitment of larger valves. New manganese bronze valve guides were fitted and a precision valve job performed consisting of five angles on the intakes and three angles and a radius on the exhausts. The stock valves were replaced with high flow forged stainless steel valves – modified 1.94” intakes and 1.61” exhausts. All the seating faces were vacuum tested. The stock valve springs were replaced with high performance beehive springs which were set up to provide 175lbs pressure on the seat and 360lbs at 0.560” peak lift of the Andrews TW57 cam profile. The combustion chambers were machined to 86cc which gives a static compression ratio of 10:1 and a corrected compression ratio of 9.3:1 with 3.91” x 0.030” head gaskets. After final assembly the heads were flow tested with and without the stock throttle body and the results recorded. TDC and valve to piston clearances have been checked."
"The stock 2013 heads were received, disassembled, soda blasted and then reassembled and flow tested. The stock guides were removed and all ports were profiled including the short side radii, bowl, guide boss and throat areas. The port entrances were matched to the manifold outlets and the combustion chamber was polished. The intake seats were replaced to allow fitment of larger valves. New manganese bronze valve guides were fitted and a precision valve job performed consisting of five angles on the intakes and three angles and a radius on the exhausts. The stock valves were replaced with high flow forged stainless steel valves – modified 1.94” intakes and 1.61” exhausts. All the seating faces were vacuum tested. The stock valve springs were replaced with high performance beehive springs which were set up to provide 175lbs pressure on the seat and 360lbs at 0.560” peak lift of the Andrews TW57 cam profile. The combustion chambers were machined to 86cc which gives a static compression ratio of 10:1 and a corrected compression ratio of 9.3:1 with 3.91” x 0.030” head gaskets. After final assembly the heads were flow tested with and without the stock throttle body and the results recorded. TDC and valve to piston clearances have been checked."