Hand porting heads
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Cruiser
Joined: Jun 2010
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From: Oak Harbor
Hand porting heads
Anyone ever try hand porting/polishing their cylinder heads? I realize that diamond cut CNC work is far superior, but it is also pretty costly. Back in the day I did some hand port/polish work on automotive heads but never on a HD. If you have done it I would be curious to hear your results. TIA
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
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From: Indiana, USA
Unless you know what you are doing, you can actually reduce flow in your stock heads, The porting a Harley head is not the same as we did in the old days to our domestic V8s with gasket matching and porting to blend. Do not attempt unless you know what you are doing and or know somebody that has proven over time with flow bench numbers. There are gains to be had but only throught he hands of an expert, seek 1 out.
Seasoned HDF Member
Joined: Feb 2010
Posts: 5,618
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From: Green Country
Mine were done by a friend that ran a reputable custom shop. He did me a favor and installed Manley valves, new springs and the port/polish job for 150 bucks. But that was quite some time ago...
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Cruiser
Joined: Jun 2010
Posts: 136
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From: Oak Harbor
Unless you know what you are doing, you can actually reduce flow in your stock heads, The porting a Harley head is not the same as we did in the old days to our domestic V8s with gasket matching and porting to blend. Do not attempt unless you know what you are doing and or know somebody that has proven over time with flow bench numbers. There are gains to be had but only throught he hands of an expert, seek 1 out.
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Cruiser
Joined: Jun 2010
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From: Oak Harbor
How did she run afterwards?
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Seasoned HDF Member
Joined: Feb 2010
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From: Green Country
Like a freight train. I got decent gas mileage if I stayed out of the throttle. No dyno numbers to brag with. I also had cams, a thinner head gasket, Mikuni flat-slide carb and RB Racing 2-1 pipe. Here she is...
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Cruiser
Joined: Jun 2010
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From: Oak Harbor
).... Good lookin scooter hdgzr.