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Old 07-18-2009, 06:35 AM   #391
L-Train
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I read something that said that Scott Summers mechanic would install grease zerks in the steering head to grease the bearings, after modifying the races to let grease go in....anyone heard/seen/done this? With the oil in the frame heating up the grease and it melting out quickly being the reason...
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Old 07-18-2009, 10:43 AM   #392
mrfixit54016
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Update on my 85 rebuild

Well, I have done everything possible to make my 85 XR600 look like new. Everything was stripped and re-painted factory colors. I still need to polish all the plastics, but last night I got to try starting it for the first time since the rebuild of the engine. But I have no spark. It ran last fall, but it smoked and one gear was bad. Now, after the rebuild, it does not seem to have spark! I installed a new plug, and a different coil, but still nothing. When I test the resistance on the leads for the stator, it appears that the stator is bad. I just have a hard time believeing that it went bad just sitting over the winter. I guess Ricky Stator will get some more of my cash...

The other thing I still need is a good factory muffler from an 85-87 XR and one stinking valve cap for the valve cover. (mine cracked)

If anyone has some laying around feel free to PM me.
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Old 07-18-2009, 01:38 PM   #393
Blakebird
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Quote:
Originally Posted by mrfixit54016
When I test the resistance on the leads for the stator, it appears that the stator is bad. I just have a hard time believeing that it went bad just sitting over the winter. I guess Ricky Stator will get some more of my cash...
There's worse ways to spend your money, and for your $150 to Ricky Stator or Baja Designs (for a bit more w.) you enhance the capabilities of your bike noticably. You can add lights, grip heat....
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Old 07-18-2009, 02:24 PM   #394
Zombie_Stomp
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Quote:
Originally Posted by mrfixit54016
... But I have no spark. .... I just have a hard time believeing that it went bad just sitting over the winter. I guess Ricky Stator will get some more of my cash...
I agree with Blake that they're worth it. I also agree with you about having a hard time believing how they behave. All I know after my experiences with stock '80's RFVC engines' stators is to b suspicious. Mine fired right up after the first mechanical rebuild, but later that day it would not restart. It can happen any time.
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Old 07-18-2009, 04:14 PM   #395
mrfixit54016
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Zombie,

As you know, I have been through just about everything you have with my XL600 and I agree the Ricky Stator is about the best thing I ever installed for the money. It worked so well that I put one in my XL350R that was always hard to start, and it was the magic cure for that bike as well. (then I sold it )

I guess I will have to bite the bullet again.

Still searching for a muffler for an 85 -87 XR600....
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Old 07-18-2009, 04:34 PM   #396
hunkaboy
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This is my first post and I hope there will be some more I am 19 years old and I live in Sweden. I have only ridden a quad (Yamaha raptor 350 -06) so this is my first motorcycle! And I got to say I love it. My honda xr 600 -95 have much more power and torque than my raptor. My honda make power wheelies in first , second and third gear! I ride on the streets and some trail riding ofcourse. Well thats it! enjoy my first pic......more pics will come, this pic is from the dealer were I bought it.

I have seen some really nice looking xr 600 in here BTW I am going to buy some supermotard wheels later!
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Old 07-19-2009, 02:19 PM   #397
mrfixit54016
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Before and After

Before:






After:


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Old 07-19-2009, 02:44 PM   #398
hunkaboy
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Great job mrfixit54016 It looks like your xr is totally new. Have a nice ride on it I hope
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Old 07-19-2009, 09:21 PM   #399
FoolishMortal
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Quote:
Originally Posted by GodSilla
I also added a light-action clutch lever which cost a whole $14.95, and it makes a considerable difference to the riding enjoyment and fine clutch control.
More info, please?
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Old 07-20-2009, 03:59 PM   #400
rmhrc628
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XR600 -> HRC628 gearing suggestions

Hi Guys

I modded my 2000 model XR600 quite a lot. (It is on page 1 of this thread - post 11)

HRC628kit
XL600RMG crankshaft to enable electric start to be added the to XR628 motor
Keihin FCRMX41mm carby
Cleaned ports
Opened up sidecovers
Staintune full system
15/46 gearing


The issue is with my gps276 I get about 120km/hr tops (ié the engine is busy)

I am certain I should be getting much more speed out of the motor.

It **almost ** feels like when the XL600RMG crankshaft was installed its geared the bike down so that its top speed is lower. (ie lower than before I installed the XL crankshaft to enable electric start to be added to the XR600 cases)

Am I possibly correct that the crankshaft from the XL600RMG would be slowing my bike down as much as I think? Do the crankshafts even have gears on them? How would I work this out?

Ever since I did the estart conversion I have had this suspicion that the the bike is slower - even with the changed carby etc.

When I compare the speeds I am comparing the original XR600 speedo versus my garmin276. It seemed that the original XR600 speedo would get to 120km/hr (indicated) easily where as now with the mods it seems to be hearder.

What could it be?
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Old 07-20-2009, 04:20 PM   #401
HeadTrauma
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The crankshaft does have a gear on it...the one that drives the clutch. However, the gear is easily removed and if only the crank was replaced, then the primary gearing stayed the same.

With 15/46 sprockets it should be capable of at least 150kph. It could be lots of things; jetting, soft valve srpings, improper lash, etc.

For comparison, the last time I tried, my 600 did 155 on 14/48s and lean jetting before running out of rpm. I expect it to break 160 on ethanol with 15/48, maybe even 170 after I install a cam.
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Old 07-20-2009, 04:26 PM   #402
rmhrc628
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Quote:
Originally Posted by HeadTrauma
The crankshaft does have a gear on it...the one that drives the clutch. However, the gear is easily removed and if only the crank was replaced, then the primary gearing stayed the same.

With 15/46 sprockets it should be capable of at least 150kph. It could be lots of things; jetting, soft valve srpings, improper lash, etc.

For comparison, the last time I tried, my 600 did 155 on 14/48s and lean jetting before running out of rpm. I expect it to break 160 on ethanol with 15/48, maybe even 170 after I install a cam.
Thanks HT

Your thoughts echo mine - I was hoping for at least 150km/hr

How many teeth are on the stock XR600 crankshaft?

I then need to find out how many are on the XL600RMG crankshaft
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Old 07-20-2009, 04:42 PM   #403
HeadTrauma
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I should have also mentioned that in order to change the primary ratio, both the crank gear and clutch basket must be replaced.

XR600 primary gearing is 2.188 with 70 teeth on the basket and 32 on the crank gear. As far as I know, all the North American XL600s had the same, if it helps. The XR650L has a lower ratio at 2.029 with 69/34 gears.
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Old 07-20-2009, 07:02 PM   #404
Zombie_Stomp
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What about stroke? XL600s have a stroke of 75mm, and the xr600s have 80mm. If the xl600RMG crank is 75mm like the american XL600R models, and you assembled it with the XR600 piston and cylinder, you would have lower compression and lower power, even if the piston was a high compression one.
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Old 07-20-2009, 08:38 PM   #405
rmhrc628
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Quote:
Originally Posted by Zombie_Stomp
What about stroke? XL600s have a stroke of 75mm, and the xr600s have 80mm. If the xl600RMG crank is 75mm like the american XL600R models, and you assembled it with the XR600 piston and cylinder, you would have lower compression and lower power, even if the piston was a high compression one.

Would that equate to the differences do you think in speed?

It's a bloody good suggestion I reckon.

What was the bore x stroke of the XL600RMG?
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