The XL600 thread

Discussion in 'Thumpers' started by Gregster, Jul 6, 2007.

  1. crobox

    crobox Been here awhile

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    Klaus- I read this post a few weeks ago and it stuck in my head. I had to search to find it again....

    I'm interested in this tank that you made with the bottom of a stock XL tank. (That's a really good idea!)
    Do you have pictures of it? I would love to see.

    Thanks,
    Christian
  2. 12120

    12120 Indenturedx5

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    RIcky stator is here, coil is her, new gasket for stator cover, now I just need some time. :D I would be nice if it wasn't raining sideways to. :lol3 Anybody know if CR pegs will fit on the XL? I believe they are wider.

    Chris

    Sorry about your luck Pete. I think you outta just pull the carbs off and totally take apart and clean. Same goes for the fuel line/tank screen and tank. I you had that much crap in the carbs the need complete tear down. I would think. I hate the little mystery problems.:splat
  3. Stretchah

    Stretchah Been here awhile

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    After my post regarding the fork upgrades, I just want to clarify a few things i've noticed that seem a little strange, Firstly am I right in thinking that standard xl600 forks are 39mm to 1985 and 41mm after?.

    I was in the garage earlier and thought I'd have a closer look at mine and I noticed the tops are about 1 inch above the top yoke - is this normal for them to be set that way or are they normally flush with the top of the yoke?

    [​IMG]

    I then noticed that they look like they've been machined from half way between the 2 yokes to the tops :eek1

    [​IMG]

    So, I measured them and they are 43mm all the way up to where it looks machined and then 41mm. And from what Carter said the other day I am guessing a european top yoke has been used as its 41mm and has the ignition holder and screen/light holder brackets in the normal place.

    Found a part no. KA4-831 on a little blue sticker on the right slider and have done a quick search and they seem to be coming up as from a CR250R or CR500R from 85-87 intrigued as to whether the machining is original or an alteration - most forks I've seen are normally the same diameter all the way up...

    Heres a pic of the whole forks in case it helps... At the moment I'm thinking someone has done me a massive favour and may have already upgraded my forks :lol3
    Let me know what you think? it may just be that I've misinterpreted what you guys have said and I've read and this is all normal :wink:

    [​IMG]
  4. MentalGuru

    MentalGuru Crazy Diamond

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    His bike is a Euro model so it's probably way cooler.... :lol3

    :freaky
  5. mcma111

    mcma111 Long timer

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  6. MentalGuru

    MentalGuru Crazy Diamond

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    I suspect a fork swap has been done. Maybe CR forks and lower with them machined to fit the stock upper. Measure the tubes at both clamps (some cartidge forks neck down between the triple clamps). Measure the axle size to see if it is 15 or 17mm in size.

    Just curious... :D

    :freaky
  7. Stretchah

    Stretchah Been here awhile

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    Cheers Guys and mental guru hopefully one day it'll be cooler, but, not in it's current state :wink:

    I was thinking the tops should be pretty much flush. I'm guessing they may be a little longer and a previous owner did it like that to even the ride height as seems to be a standard rear shock. That seems to be good news though as wanted to raise the ride height, just got to get an XR rear shock now :D

    It does drop from 43mm to 41mm on the yokes...if they are like that as standard it may be another upgrade option for us :) I'll measure the axle too especially as just bought a spare front wheel :eek1 Hopefully I can get it to fit without issues...

    Moparmanpete, Glad to hear that you've sorted your carb problem, enjoy :D

    Andy
  8. 12120

    12120 Indenturedx5

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    Yay:clap Mine is also alive. Glad you got your's sorted Pete!:clap I did not get to go for a ride. My tags are expired, and the plate is from OR. I have the bike in my name, just did not get a WA plate on it cause the tags where still good on the old one.:wink: I know bend the rules.:evil It was also raining cats and dogs and about 40 degrees.:puke1 New coil new ricky see what brakes next.

    Chris
  9. RFVC600R

    RFVC600R SAND EATER

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    I got a problem, I bought a new Volar o-ring chain. I guess you gotta use a special tool to the press the rivets on the masterlink and I can't afford the tool :cry

    What should I do? the damn tool is more than the chain!!

    Can i use a master link from a regular o-ring chain??
  10. Homerb

    Homerb Been here awhile

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    Im assuming the link is a rivet type master link? Id just peen the riverts over with a hammer. Or you could use a normal master link. I did on my last bike which was dynoed at 73rwhp and the link held fine.
  11. RFVC600R

    RFVC600R SAND EATER

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    The bike shop cut me some slack, they installed the chain for free even though I didn't purchase it from them. The mechanic told me my chain is a cheap POS and should replace it soon. And then he told me that the XL isn't worth owning and I should sell it for a 650L. "once this thing blows, that's it! it'll be the same as having no bike" Sorry bro, this thing eats XRLs :D. But according to him, the engines of the XL and the XRL have NOTHING in common. :rofl

    I understand my bike looks like a junker, but it's not worthless, kinda pissed me off a little, but I kept my mouth shut since he was installing it for free.
  12. brucifer

    brucifer Long timer

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    That mechanic sounds like a real winner...:rolleyes
  13. Mike the Yank

    Mike the Yank Long timer

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    I think that is WHINER :rofl
  14. mcma111

    mcma111 Long timer

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    Opinions are like, well you know.

    To each their own.
  15. davek181

    davek181 Long timer

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    A good running XL is much better than the XRL. You have to mod the L to even compare favorably. If you mod the XL suspension you have a much better bike overall.

    I have ridden both and I definitely prefer my XL over the L that I got to ride extensively this summer. A friend bought one and I was tasked with uncorking it and rejetting it and desmogging it as per numerous posts on many sites. The intent and purported results of the mods was to "wake up" the XRL. After doing all the popular mods and dialing in the jetting I kept wondering when the wakeup was going to happen. When I finished up and gave it back to the owner, he was impressed by the results, but I was still a little underwhelmed myself.
  16. crobox

    crobox Been here awhile

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    I have a decision to make about this engine, but it involves knowledge that I don't have. So I am hoping some of you guys who understand these engines better than I do can chime in...

    I have read enough of this thread to understand some of the issues at play, but I just don't have the experience to be sure of the right way to go.....

    As some of you may have noticed, I am rebuilding my 1986 XL. The build thread is here. Because I am doing so much to the bike, I figured I would go ahead and re-do the top end, just so I knew I was starting with a fresh engine. Instead of opening my engine first and sending the jug to be re-bored, I purchased on eBay a freshly bored cylinder with a matching Wiseco 101mm piston (with rings and wrist-pin). These items arrived yesterday.

    [​IMG]

    Also yesterday I pulled apart the top end of my bike, and I found the existing cylinder walls to be in apparently very good condition. You can see the hone marks very clearly. There is some very mild vertical scoring at the forward part of the bore. You can see the scoring, but I can barely feel it.

    [​IMG]


    I didn't quite realize until reading the paperwork for the Wiseco piston that it is a higher compression piston (11:1) My main concern associated with installing the new items is: Am I going to need to change the cam??? Or anything else major? To be honest I do not really want to get into changing a bunch of other engine components just to match this piston. (By the way I am at stock jetting, but I live at 7000 feet... so I will be a little richer than "stock".)

    I'm not worried about having purchased the jug and piston, like "Oh I bought it, I really should use it." I can just re-sell it, no big deal.

    So my quandary is: leave it alone and put the head back on (after a valve job, which it is definitely going to get)?
    Or install the new jug and piston?

    I need some guidance about which way to go. What do you guys think?

    Thanks,
    Christian
  17. MentalGuru

    MentalGuru Crazy Diamond

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    Your cylinder on your bike looks like a worn cylinder that was rehoned and got new rings(and piston???)....

    Wiseco piston rated compression they list is wrong, that will be a 10.5 to 1 slug at best.

    I would use the ebay cylinder and Wiseco piston if the piston to wall clearance is correct.

    :freaky
  18. crobox

    crobox Been here awhile

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    Thanks.... Yes I remember reading that the compression is slightly over-rated. But will I have problems the Wiseco piston and the stock cam? I'm pretty sure the best gasoline I can get around here is 91.
  19. davek181

    davek181 Long timer

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    I ran Wiseco 102.4 11:1 in my XL for several years and over 20,000 miles with stock cam and it worked great. No pinging on premium fuel and ran great. I calculated the compression ratio when I installed it and it came out to be about 10.3 to 1 actual.

    The only reason I took it out is that I broke a crankshaft and ended up putting in a XR crank in it instead and couldn't use the XL piston anymore. I did end up using a 102mm overbore XR piston with my new (used) crank, also with stock cam. It also runs great that way.

    I talked with the guys at XR's only and anyone else that would listen to me about the advantages/disadvantages of a stock cam and concluded for my riding needs I really would be happier with the stock grind and resultant low and midrange performance.
  20. crobox

    crobox Been here awhile

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    Thanks so much, DaveK.

    That is pretty much the info I was hoping to hear.

    The building consensus has me pretty convinced to stick in the Wiseco and new cylinder. Besides, it will be interesting to further pull apart the stuff I've got now and inspect the piston.

    Cheers,
    Christian