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Old 10-02-2010, 02:48 PM   #46
B.Curvin
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Quote:
Originally Posted by B.Curvin
Mr. Rider, full pics of the engine work, especially the porting please.

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Old 10-02-2010, 02:53 PM   #47
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Originally Posted by B.Curvin

You got it, I just need to round them up and up load them. What's your plan for the XR600 motor? My next 600 project will be a street tracker.
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Old 10-02-2010, 04:05 PM   #48
Mickoz
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Originally Posted by XRider
I built the 600 to have fun, not to win races.
It is just so much fun to have that kind of power on tap, it makes me laugh when I ride it.

Thats what its all about Im a big fan of the 600R, Ive had two of them, a 96 and a 97. Ive got a 650R now, and often find myself laughing like a mad man inside my helmet when riding the BRP!!!
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Old 10-02-2010, 11:43 PM   #49
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B.Curvin,
I can't find the pics of the 600 ports but here is a 650R head I did recently and the exhaust ports are nearly the same and the valve bowls are pretty much the same. The intake runners are quite differant though. Honda's reputation for quality production castings is well deserved and it's quite easy to do more harm than good when porting one of thier heads. The pictures show the finished job but I'll post up some diagrams that show what was changed. If you have spacific questions I'm more than happy to share what I've learned. Porting the exhaust is pretty straight forward, the intake is a lot more tricky because only one of the runners is straight. I should add that these pictures were taken before the valve seats were cut and before the head was tanked. You always do the porting first in case you nail one of the seats with the grinder.









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Old 10-03-2010, 01:35 AM   #50
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I was thinking of making up a few cam spockets with slotted holes and degree marks on them. These would allow you to change the cam timing so that when the cylinder is at peak demand the cam is at max lift. One of the keys to making big power. I'll probably make some up for the 650R also. Any interest?

Keep in mind these would do nothing for a motor using a stock cam and the stock 9:1 c/r piston.
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Old 10-03-2010, 07:27 AM   #51
mcma111
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Quote:
Originally Posted by XRider
B.Curvin,








Very nice. To bad my engine is together or you would get my head for your TREATMENT
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Old 10-03-2010, 08:17 AM   #52
B.Curvin
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Quote:
Originally Posted by XRider
You got it, I just need to round them up and up load them. What's your plan for the XR600 motor? My next 600 project will be a street tracker.
My own frame.

I wont know for sure what exactly it will be till I get some more of the pieces in hand.

I have a KTM 640 frame, title, swingarm and triples already.

I only plan to use the VIN from the frame. It will be a sorta SupermotoadventurebobberDScruiser.

A DR650 or XR600 will do nicely. I was just very interested to see what you'd done.

Have you read motomans porting articles?

http://www.mototuneusa.com/think_fast.htm
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Old 10-03-2010, 02:03 PM   #53
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There's nothing like a nice long ride on a fire road with the woman you love hanging on for dear life and a bike too loud to hear what she's saying. Ah, good times!
That is sig line material right there.
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Old 10-04-2010, 12:48 AM   #54
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Originally Posted by B.Curvin
My own frame.

I wont know for sure what exactly it will be till I get some more of the pieces in hand.

I have a KTM 640 frame, title, swingarm and triples already.

I only plan to use the VIN from the frame. It will be a sorta SupermotoadventurebobberDScruiser.

A DR650 or XR600 will do nicely. I was just very interested to see what you'd done.

Have you read motomans porting articles?

http://www.mototuneusa.com/think_fast.htm
Motoman's artical on porting is one of the most intelegent discussions I've heard on the subject in some time. He clearly understands the dynamics involved.
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Old 12-05-2010, 08:12 PM   #55
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I forgot who asked but the suspension on this bike is stock except for Eibock springs. It's been re-sprung for my 190# fat ass.

I run Dunlop D606s curently but have also tried MT21s. The D606s last longer but the MT21s work better in the dirt so it's a tough choice.

Last weekend I snapped 4 more teeth off the counter sprocket doing a wheelie in a parking lot. The worst thing was the girl I was trying to impress diden't even look over at me. I figured she doesn't like men!
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Old 12-06-2010, 03:27 AM   #56
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Good to see you started that thread, XRider!

Quote:
Last weekend I snapped 4 more teeth off the counter sprocket doing a wheelie in a parking lot. The worst thing was the girl I was trying to impress diden't even look over at me. I figured she doesn't like men!
Maybe not. Sure she'd enjoy the ride if she was to hop on the back though. Big bore bikes generally put out pleasing vibration, if nothing else.

How are you snapping teeth like that? What gearing are you running? What brand sprockets and in what material? Do you run a chain oiler?

Cheers - boingk
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Old 12-06-2010, 03:56 AM   #57
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XRs Forever!

XRider,

Very nice bike, What front fender is that?

Cheers,

Cumbacheech
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Old 12-06-2010, 11:49 AM   #58
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Good to see you started that thread, XRider!



Maybe not. Sure she'd enjoy the ride if she was to hop on the back though. Big bore bikes generally put out pleasing vibration, if nothing else.

How are you snapping teeth like that? What gearing are you running? What brand sprockets and in what material? Do you run a chain oiler?

Cheers - boingk

Gearing is 15/47 right now. Chain is a top of the line DID O-ring. No chain oiler.
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Old 12-06-2010, 11:51 AM   #59
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XRider,

Very nice bike, What front fender is that?

Cheers,

Cumbacheech
The front fender is an Acerbis for a CRF 450
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Old 12-06-2010, 12:05 PM   #60
cyclewizard
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Here's my XRR650 cnc ported head I did a while back.
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