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post #1 of 9 (permalink) Old 12-24-2011, 01:40 AM Thread Starter
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Default ported heads

I'm not sure how much of demand there is for this. I have been porting heads at machine shop I work at for 10 years now. I have decided to take my heads off and port them put cams in bike and put big bore kit in it. Bike has already ran [email protected] I will post my results when I'm done. If anyone is interested I will do a 5 angle valve job and bowl work on heads and ship them back to u for 400. I will post pics of my stuff as I go so u can see work.

Last edited by hammerstang; 12-24-2011 at 01:43 AM. Reason: mis spelling
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post #2 of 9 (permalink) Old 12-27-2011, 04:52 PM
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Very interesting. Sure would like to see what difference a dyno would show for this mod.

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post #3 of 9 (permalink) Old 12-27-2011, 05:04 PM
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In for the results... Love to see some low 11 sec runs

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post #4 of 9 (permalink) Old 01-07-2012, 08:00 PM Thread Starter
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Well I put the bike on dyno today for some base numbers before I do all my work to it. The bike put down 87 horse and 92 lbs of torque. Bike has hacker 2into1 and s&s filter that's it. It ran 12.05 @107 with there numbers. I'm hoping for 130 ish HP with big bore kit 495 cams 11to1 compression larger throttlebody and ported heads.I think if it makes 130 I can run some 10 sec passes but we will see.
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post #5 of 9 (permalink) Old 03-04-2012, 06:31 PM Thread Starter
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I got the heads ported on my bike. Waiting on fresh set of rings so I can out it back together. I changed my mind on doing big bore for now. I can see buying pustions twice. So next year will do big bore and strikers crank. Still doing 495 cams. So bike will have 495 cams ported heads hacker 2into1 and s&s filter. Hoping to get some mid 11 runs this year.
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post #6 of 9 (permalink) Old 03-04-2012, 08:03 PM
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You have any before and after pics of the heads?I would like to see how much you took off the combustion chamber or did you just flow them and do the valves?

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post #7 of 9 (permalink) Old 03-04-2012, 11:07 PM Thread Starter
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I took a little out if chambers but not much. Just mainly ported intake and exhaust runners. I done a valve job and moved the seats to the outside edge of the valve. Yes I have before and offer pics. I can't get them to load from my phone but when I get to the computer I will load them.
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post #8 of 9 (permalink) Old 03-05-2012, 12:21 AM
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The heads are really good... but there is a casting ridge in the ports.

All you really want to do is blend the bowls where the casing seams are, do a 3-angle valve job, and polish the backs of the valves. Making the ports bigger will reduce port velocity and actually be detrimental to performance.

Cams like the .495 S&S/Andrews need COMPRESSION. With stock pistons those cams will kill the low end torque, especially with the S&S airbox.

Joe's 104 is making 120 horse with untouched heads.
My 110 makes in excess of 130 horse with the above head massaging on stock heads, stock valve sizes, stock intakes, stock injectors, stock 45mm throttle bodies, and .484" lift cams. It doesn't take much.

You ran 12.05 with 87 horses? You must not weigh much and you must be one hell of a rider too.

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post #9 of 9 (permalink) Old 03-05-2012, 12:38 AM Thread Starter
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Most of the work I done was on the radius and in the bowls. I work at a machine shop in the Midwest and port heads for cars on a regular basis so this is not my first set oh heads i worked on. I have been doing this for 11 years now. The valve job actually has 5 angles on it. I weight 210 with no riding gear on and I don't feel like I'm a great rider but the bike hooks very well and I feel I shift pretty good. I leave off the rev limiter with 20 lbs of air in the tire it picks front wheel up about a foot and carries it for 10 feet or so. It goes 1.75 pretty regular to the 60 ft. I know mph is down for 12 flat pass so it has to be leaving good and I have to shift decent. Most bikes at the track where I live run 2.0 to 60 ft and run 12.30s @ 110
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