Topic: Ported heads!! Finish product. Check it out. Jprecision. (Read 11993 times)

CVO2FIXUP · « **on:** January 18, 2012, 07:22:35 PM »

Just got these back from Jprecision. CNC ported, CNC valve job. Bigger intake valves, re-shaped ports, Bronze guides, better springs, $1200.00 shipped. Check the picks. Now a quick de-glaze and a set of fresh rings. I will let you know how it goes after the dyno. Cheers.

CVO2FIXUP · « **Reply #1 on:** January 18, 2012, 07:23:50 PM »

extra pick

CVO2FIXUP · « **Reply #2 on:** January 18, 2012, 07:24:36 PM »

More picks

CVO2FIXUP · « **Reply #3 on:** January 18, 2012, 07:26:16 PM »

last pick

Lever · « **Reply #4 on:** January 18, 2012, 07:32:06 PM »

looks good got any flow #'s ?

CVO2FIXUP · « **Reply #5 on:** January 18, 2012, 07:32:52 PM »

Quote from: Lever on January 18, 2012, 07:25:48 PM

looks good got any flow #'s etc ?

I did not get any specks from Patric at Jprecision. If you look at his web site there are stats there. All the heads he does are the same as it is CNC. He has bin doing Harley heads for ever, and has the port design down!!! Check out the web site to see more. Then take your heads off and send them to him. I love it, so excited to see the dino results!! Cheers.

dlaws01 · « **Reply #6 on:** January 18, 2012, 07:43:50 PM »

CVO2RIDE, any cam changes going with that head porting?

Twolanerider · « **Reply #7 on:** January 18, 2012, 07:44:17 PM »

Looking at this on a phone rather than a real screen. So may not actually see what I'm seeing. But... are the valves awfully deep in the head?

CVO2FIXUP · « **Reply #8 on:** January 18, 2012, 08:03:27 PM »

Quote from: dlaws01 on January 18, 2012, 07:43:50 PM

CVO2RIDE, any cam changes going with that head porting?

I will do the cams next winter. Will go with Feuling high pressure oil pump, hi flow lifters and cam plate ( that nice red billet one ) S&S push rods and S&S gear driven cams with the comp release. Cheers.

CVO2FIXUP · « **Reply #9 on:** January 18, 2012, 08:05:44 PM »

Quote from: Twolanerider on January 18, 2012, 07:44:17 PM

Looking at this on a phone rather than a real screen. So may not actually see what I'm seeing. But... are the valves awfully deep in the head?

No they are the stock depth. Just the intake valve is bidder. The chamber is polished. Here is a pick from a different angle.

CVO2FIXUP · « **Reply #10 on:** January 18, 2012, 08:09:24 PM »

Oh, Patrick also ports the intake manifold. It gets a type of rough CNC finish to increase air fuel mixing.

lilcoot · « **Reply #11 on:** January 18, 2012, 08:26:25 PM »

Hey, CVO2RIDE, I'm really interested in your numbers after porting. I look forward to seeing the results. Do you have a pre-port dyno run so you can compare the differences?

Every Harley mechanic I talk to has different advice, from "You have to port the heads to get the engine to work right" to "You don't need to have ported heads, it doesn't do anything, it's a waste of money". I get really fed up with the lack of consistency, and I know I'm not the only one.

CVO2FIXUP · « **Reply #12 on:** January 18, 2012, 08:51:36 PM »

Quote from: lilcoot on January 18, 2012, 08:26:25 PM

Hey, CVO2RIDE, I'm really interested in your numbers after porting. I look forward to seeing the results. Do you have a pre-port dyno run so you can compare the differences?

Every Harley mechanic I talk to has different advice, from "You have to port the heads to get the engine to work right" to "You don't need to have ported heads, it doesn't do anything, it's a waste of money". I get really fed up with the lack of consistency, and I know I'm not the only one.

I was recommended to this builder in Toronto Canada. Raph at Aviation Motorcycles. I checked this guy out and found he is so honest and very knowledgeable. The kind of guy that does not really need any more work. He has bike lined up for engine work out the door. I went in to get some cams put in. Raph started explaining to me that with out head work I will not get that much gains from the cams. Said the heads ore the most restricted part of the v-twin. ( same $$ for the port job with labor as the cams, gears, gaskets, push rods and labor ) So it did not mater to him what I did. He was talking from experience after building Harley engens for years. Then I looked around at bikes in his shoppe and every one who had there bikes built with ported heads were raving about the performance gains. And the quality of the build. Porting, C&C valve job, valve springs is clearly the way to go. Now that the heads flow to there potential, the cams will do there job. I don't have the stock numbers from my bike but a stock 110 is about 90 hp ans 90 fpt I am confident it will be around 110 hp before cams. I will post the results in about 2 weeks. Cheers. Check out Jprecision, give Raph a call 416 477-3239

CVO2FIXUP · « **Reply #13 on:** January 18, 2012, 09:20:18 PM »

Quote from: Lever on January 18, 2012, 07:32:06 PM

looks good got any flow #'s ?

Ok, flow is 160 CFM @ .600" lift Now will have to choose the correct cam. This will be the hardest part. So many cams, so many opinions. maybe I will go with the marble ones. lol.

HOGMIKE · « **Reply #14 on:** January 18, 2012, 10:37:43 PM »

Quote from: CVO2RIDE on January 18, 2012, 07:22:35 PM

Just got these back from Jprecision. CNC ported, CNC valve job. Bigger intake valves, re-shaped ports, Bronze guides, better springs, $1200.00 shipped. Check the picks. Now a quick de-glaze and a set of fresh rings. I will let you know how it goes after the dyno. Cheers.

The OTHER school of thought on heads:

HOGMIKE · « **Reply #15 on:** January 18, 2012, 10:40:01 PM »

One more to stir the pot!

CVO2FIXUP · « **Reply #16 on:** January 18, 2012, 11:00:45 PM »

Works of art!!! Shame to put them back on to a bike and hide all that work. How did they work on your bikes? What cams did you use. Did it feel much stronger? Thanx for those nice picks. Cheers.

North Star · « **Reply #17 on:** January 18, 2012, 11:05:20 PM »

Interesting. I see that shop is in Mississauga, and J precision is in Quebec. When I googled Aviation Motorcycles, it only showed a single home page- couldn't see where you could link in to the website?

So what did the $1,200 include- head porting, plus replacing all the parts in the heads except for the exhaust valves?
Did it also include the throttle body porting?

So now you're going to do rings and de-glaze the pistons, then just bolt on the heads and that's it for now?

Do you know if Aviation does dyno tuning, and if he uses the TTS?

StevesCVO · « **Reply #18 on:** January 19, 2012, 12:25:49 AM »

Looks like he does really nice work. Can't wait to see the dyno sheet when it's done.

North Star · « **Reply #19 on:** January 19, 2012, 03:26:15 AM »

I'm guessing Hog Mike's pics are from here-

http://www.branchokeefe.com/heads.html

HOGMIKE · « **Reply #20 on:** January 19, 2012, 09:47:51 AM »

Quote from: North Star on January 19, 2012, 03:26:15 AM

I'm guessing Hog Mike's pics are from here-

http://www.branchokeefe.com/heads.html

You would be correct.

CVO2FIXUP · « **Reply #21 on:** January 19, 2012, 02:45:30 PM »

Quote from: North Star on January 18, 2012, 11:05:20 PM

Interesting. I see that shop is in Mississauga, and J precision is in Quebec. When I googled Aviation Motorcycles, it only showed a single home page- couldn't see where you could link in to the website?

So what did the $1,200 include- head porting, plus replacing all the parts in the heads except for the exhaust valves?
Did it also include the throttle body porting?

So now you're going to do rings and de-glaze the pistons, then just bolt on the heads and that's it for now?

Do you know if Aviation does dyno tuning, and if he uses the TTS?

My total bill was $1200.00 for the heads and $800.00 for parts and labor. Harley gasket set ( complete engine gasket set ) Rings, de-glaze at Gord Bush's machine shop. Raph will also change the oil after 50 km ( so that is like 2 oil changes ) Non synthetic for the first 1000km. Will install my Power Commander and load in a map for starters. As far as the porting goes the manifold porting is included. Aviation is a very small shoppe, with only Raph running it. It's the kind of place you find out about through word of mouth. A gem amongst all the bullchit out there. He does not have a dyno. I use Z-1 Cycle Teck. ( Bathurst and Steels area. ) This Z is a master with the Super Tuner. He does all the tuning for the 3 local Harley Dealers. Then man is dead serious about getting it bang on. Check them out. Cheers. Oh and the cost for doing the cams the correct way is the same. about $2000.00 parts and labor. You will get Fueling hi pressure oil pump, Hi pressure lifters, Fueling cam backing plate, gear driven cams and adjustable push rods. The most important part is that it will be installed right!!! By a guy who gives a dam and loves what he does. Cheers.

CVO2FIXUP · « **Reply #22 on:** January 26, 2012, 07:17:24 PM »

Just dropped the bike off at the dyno shop today. Should have news of the results in 2 days. Cheers.

Unbalanced · « **Reply #23 on:** January 26, 2012, 10:26:53 PM »

Quote from: CVO2RIDE on January 19, 2012, 02:45:30 PM

My total bill was $1200.00 for the heads and $800.00 for parts and labor. Harley gasket set ( complete engine gasket set ) Rings, de-glaze at Gord Bush's machine shop. Raph will also change the oil after 50 km ( so that is like 2 oil changes ) Non synthetic for the first 1000km. Will install my Power Commander and load in a map for starters. As far as the porting goes the manifold porting is included. Aviation is a very small shoppe, with only Raph running it. It's the kind of place you find out about through word of mouth. A gem amongst all the bullchit out there. He does not have a dyno. I use Z-1 Cycle Teck. ( Bathurst and Steels area. ) This Z is a master with the Super Tuner. He does all the tuning for the 3 local Harley Dealers. Then man is dead serious about getting it bang on. Check them out. Cheers. Oh and the cost for doing the cams the correct way is the same. about $2000.00 parts and labor. You will get Fueling hi pressure oil pump, Hi pressure lifters, Fueling cam backing plate, gear driven cams and adjustable push rods. The most important part is that it will be installed right!!! By a guy who gives a dam and loves what he does. Cheers.

Just curious were your pistons in the hole and if so how much or at 0 deck when they put it back together?

CVO2FIXUP · « **Reply #24 on:** January 27, 2012, 02:10:46 PM »

Quote from: Unbalanced on January 26, 2012, 10:26:53 PM

Just curious were your pistons in the hole and if so how much or at 0 deck when they put it back together?

The pistons remained stock. Just a fresh set of rings and a de-glaze. So the hight of the pistons wold be stock. I looked at the bores before it went together, and there looked to be less that a 1/4 inch of space above the piston. I hope that answered you question. Cheers.

Unbalanced · « **Reply #25 on:** January 27, 2012, 04:04:33 PM »

CVO2Ride,

Next time I would recommend measuring exactly where the pistons are. You stated you used a stock gasket I am guessing you meant a stock SE Gasket which is .040 or > and if the pistons are in the hole you did all that work and didn't optimize your squish. If the pistons are in the hole it means you now have greater than a .040 squish. You want to be generally .030-.037 and yes it does make a difference.

Had you used a .030 you would probably be in the range of .033 to .043 squsih vs. now where you could be .043 to .053

This is really an important step if you are doing headwork its part of the reason to do the headwork.

HILLSIDECYCLE.COM · « **Reply #26 on:** January 27, 2012, 04:39:04 PM »

Quote from: North Star on January 18, 2012, 11:05:20 PM

Interesting. I see that shop is in Mississauga, and J precision is in Quebec. When I googled Aviation Motorcycles, it only showed a single home page- couldn't see where you could link in to the website?

So what did the $1,200 include- head porting, plus replacing all the parts in the heads except for the exhaust valves?
Did it also include the throttle body porting?

So now you're going to do rings and de-glaze the pistons, then just bolt on the heads and that's it for now?

Do you know if Aviation does dyno tuning, and if he uses the TTS?

Mississauga?
That is where an outfit called "Stylemasters" used to be located.
They also had a store in Syracuse for a couple years.

Basically owned by The Orlando Corporation.
Scott

CVO2FIXUP · « **Reply #27 on:** January 27, 2012, 07:38:27 PM »

Quote from: Unbalanced on January 27, 2012, 04:04:33 PM

CVO2Ride,

Next time I would recommend measuring exactly where the pistons are. You stated you used a stock gasket I am guessing you meant a stock SE Gasket which is .040 or > and if the pistons are in the hole you did all that work and didn't optimize your squish. If the pistons are in the hole it means you now have greater than a .040 squish. You want to be generally .030-.037 and yes it does make a difference.

Had you used a .030 you would probably be in the range of .033 to .043 squsih vs. now where you could be .043 to .053

This is really an important step if you are doing head work its part of the reason to do the headwork.

I see, so you are talking about the base Gaskets right? Or the head gaskets? I will ask the builder about this. He might of done this automatically. But I dont know if he did. Will have the dyno results tomorrow. ( I hope )

InfernoCVO · « **Reply #28 on:** January 28, 2012, 12:32:41 PM »

Heads look nice makes me even more antsy

Author Topic: Ported heads!! Finish product. Check it out. Jprecision. (Read 11993 times)