1984 XL600R Build

Discussion in 'Thumpers' started by brucifer, Feb 4, 2012.

  1. Ghost_Mutant

    Ghost_Mutant looking for bionics

    Joined:
    Aug 12, 2009
    Oddometer:
    727
    Location:
    border of granite & flats
    Quite the hodgepodge of RFVC components there:rofl

    Any problems running that XR5 head? Did you use the old style cam chain with the XRL bottom end? Valve cover from the XL6?

    Did you do anything to seal up the oil chamber so it doesn't leak out around the cam bearing where the valve cover meets the XR5 head?

    How well did the combo work?

    Details please:D
    #21
  2. brucifer

    brucifer Long timer

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    The only problem I ran into using the 500 head is too much compression. I bought this head off of ebay understanding it to be a 600 head. It wasn't till later on when I actually began the engine assembly did I notice the smaller combustion chamber.
    The piston is a JE 10.5:1 designed to run with the chamber of the XR650L head. I'm probably well over 11:1 with this head. It doesn't work with crappy Ca. 91 octane fuel. It pinged big time with anything over about half throttle.

    I didn't seal up anything in the 500 head. I do remember you talking about that in one of your posts. I'll look into it this time around.

    Yes, I used the early wide cam chain. As I recall, I flipped the cam sprocket over so it would line up properly as well.

    How did it run? :evil Even pinging it was an animal. A freakin' torque monster! Effortless wheelies, even with the tall stock XL gearing. The first time I took it out my buddy showed up with his XR650L, it's piped and jetted. I told him I had to take it easy because my engine was brand new. Well, that didn't last long. :lol3
    We got about a mile from my house and did a top gear roll-on at about 50 mph. I just walked away from him. I pulled him by 3 or 4 bike lengths before we had to shut down. He couldn't believe it. :D
    That engine still isn't even broke in. I doubt it has a hundred miles on it.
    #22
  3. henrymartin

    henrymartin Mr. Tourguide

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    That's quite the motor!

    I'll follow this for a while too. Damn, visiting this site just keeps getting more and more expensive. :deal

    I love (and hate) frame up resto work. Seems that every one of mine lately has been stripped down to frame (the last 4 anyway).

    If I can ask about how much was the powder on the frame...people here charge crazy money for that.
    #23
  4. brucifer

    brucifer Long timer

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    Hey Henry! Good to see ya here.

    It was $150.00 for the frame and the two upper motor mount plates.
    #24
  5. HeadTrauma

    HeadTrauma ¯\_(ツ)_/¯

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    I bet it pinged! I estimate that engine's static compression is around 11:5:1.

    If you thought it was gutsy rattling away on 91, take out a personal loan and fill it with some VP100. :evil
    #25
  6. brucifer

    brucifer Long timer

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    :lol3

    Thanks for the mathemagician skills, HT. :thumb:D I was curious what my actual compression was.
    #26
  7. pudgepuss

    pudgepuss Sayer of Sooth

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    La Crosse, WI
    I'm in!!! Good luck with the build, looking forward to updates!
    #27
  8. Carter Pewterschmidt

    Carter Pewterschmidt Long timer

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    My 86 pings quite a bit with the Wiesco 11:1 piston and stock head. It still drives decent but it doesn't like winding out. I stick to feeding it race gas now. I might try an upgraded cam or just get a stock Honda piston.
    #28
  9. brucifer

    brucifer Long timer

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    A little forward movement.

    First, I installed the new bearing races in the steering head.

    [​IMG]
    [​IMG]

    Then, I pressed the new lower bearing (with dust seal) onto the lower triple.

    [​IMG]

    And lastly, with the new upper bearing and top triple, installed on the frame.

    [​IMG]
    [​IMG]
    #29
  10. brucifer

    brucifer Long timer

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    Nothing new yet, but I have been THINKING of working on it. :lol3 My recent XR600 purchase and subsequent build have been keeping me away from this build. Hopefully not much longer.
    #30
  11. Super Tracker

    Super Tracker Adventurer

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    Midwest
    I dug and dug, looking for info on XLR600/650 hybrid engines, found your thread on TT, followed over here, and no new news! Get on it man! :ricky
    I think I stumbled on the original thread on TT, because I was searching for info on using a 650L head on an XL600R.... I know bassackwards. But I was just keeping my options open, since my frame/suspension is already modified, so carb placement isn't an issue. Going to follow your lead and start a thread over here, seeing more interest.
    Good luck with your build, I'm following.

    Later on,
    TR
    #31
  12. brucifer

    brucifer Long timer

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    Hey, welcome to the XL600R world! :D

    It will work in reverse as well. I built a 2000 plated XR600 using an '84 XL600 bottom end, XR650L cylinder and the 2000 XR600 head. The original engine was blown up; the only things usable were the head, transmission and outer engine covers. The XR600 and XR650L heads are the same with one important difference (besides the air injector holes) the 650L has a larger combustion chamber than the 600.
    #32
  13. Ivanych

    Ivanych Ivanych

    Joined:
    Jan 24, 2011
    Oddometer:
    250
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    St. Petersburg. Russia
    Hi Mr. Brucifer!
    What color (RAL number) has the paint for painting the frame of your bike?
    It is OEM HONDA color?
    I have to paint the frame in the near future and I can't choose a color: black or red.
    Thank you.
    #33
  14. brucifer

    brucifer Long timer

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    The color that's on there now was matched up at the powder coater, I don't know what the number is. But if you're speaking of the factory paint code originally on the frame, I'll see if I can dig it up for you. I believe I took a pic of the code decal before the powder coating.
    #34
  15. brucifer

    brucifer Long timer

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    Okay, found it. It's R-110.
    #35
  16. jontow

    jontow Been here awhile

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    What a monster this will be .... :lurk I love it.
    #36
  17. kmequint

    kmequint Adventurer

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    I'm in! :lurk
    #37
  18. EmilianoXR650L

    EmilianoXR650L Been here awhile

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    :ear:clap !!!!!
    #38
  19. brucifer

    brucifer Long timer

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    Hello folks! Been a while but have some forward movement. :D

    Okay, finally pulled the forks apart and cleaned them out and reassembled with new seals.
    [​IMG]
    Fit them into the triples and bolted on new fork guards with new bolts.
    [​IMG]
    I scored a set of CR wheels from my neighbor with dual sport tires already installed. The fronts like new--the back, not so much.
    Installed the wheel assembly but the axle came up short.
    [​IMG]
    Here you can see it doesn't quite make it through.
    [​IMG]
    So, I took the spacer from the other side.......
    [​IMG]
    .......and had my machinest take 5/8" off.
    [​IMG]
    #39
  20. mcma111

    mcma111 Long timer

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    Bruce,

    You do know that the CRF R and X axles are different don't you? The X is cut away for the Odo drive where as the R is not. Looks like you have a R axle.
    #40