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Old 02-24-2013, 05:34 AM   #7006
Royal Club
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I has a thinner camchain and the works in mn 87 xr6
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Old 02-24-2013, 06:23 AM   #7007
joexr
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Originally Posted by elsalvadorklr View Post
captain do you have a pic of your headers from the front? my left pipe looks nothing like yours, its has a flat bend to it at the bottom...yours are very close and neat looking..

ps. your 88 should NOT vibrate...are lugging it too much? maybe go up the rev range more and report back

ever since putting back tthe twin headers and oem muffler the bike is even more smooth as there is not extreme thumping like before...

exhausts make a big difference in perceived thumpiness if you will

If I lug my xr really low it will rattle and shake

but never at the bars, so thats worrisome you have that...I get it in the frame and foopegs but never enough to NUMB me.

also our 88 bikes are nice with vibes because they have a twin gear balancer shaft...that is spring loaded unlike otheryear xr6...this is to help with the slamming effect of the crank when accelerating hard or downshifting...

other year xrs have a nice whine to them and slappiness if you will until warmed up because of this(different cam chain as well on 86 and down models, they were bigger)
anywhoo

hope you get it sorted

nice 88 btw! once again
The split gear cut down on the gear noise. Some people remove the springloaded half of the gear to reduce rotational mass , if not the whole counterbalancer.
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Old 02-24-2013, 07:30 AM   #7008
elsalvadorklr
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Originally Posted by Royal Club View Post
I has a thinner camchain and the works in mn 87 xr6
I remeber seing pics of twin carb xr6 with thicker sprockets and chain...is this not so?

I thought all single carb heads have a thinner chain up till 2000.

in any case

royal is yours the same as 88 and up bikes? I thought you posted some pics about that

cheers bud
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Old 02-24-2013, 10:56 AM   #7009
IronSpadeCycles
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3rd Gear slip? Anyone?

Have any of you guys had any problems with gears slipping on any of the older XR6's? I have an 88 model with a fair bit of work done but the engine has never been apart to my knowledge.








I'm officially the 4th owner but when I went to title and register the bike as a street legal DS bike I tracked it down to the original owner and he explained the bike had been stolen from him back in 1990. He was totally cool and just signed over the old title to me, mostly he was please to finally find out about what happened to his forest friend.

Over the last couple years that I've owned it, I've noticed that occasionally it will slip or feel like teeth are missing in 3rd gear as I'm accelerating hard to 4th gear. I only notice it on the pavement and only if I'm really pushing it, its almost a feeling of very slight wheel spin on loose dirt, then it catches and runs fine. And it only usually happens once while in 3rd going to 4th. I've honestly never tried to just ride it in 3rd to see if I can get it to slip repeatedly either.

I'm a little hesitent to pull the motor and split the cases to find out that nothing is really wrong but I was mostly wondering if this might be a common problem for our big pigs. Anyone else feel this happens to them? I've checked the oil every time I've changed it and nothing metal is showing itself but again, this could have happened years ago with a previous owner.

Thanks for your input. Later Travis
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Old 02-24-2013, 12:19 PM   #7010
Royal Club
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Quote:
Originally Posted by elsalvadorklr View Post
I remeber seing pics of twin carb xr6 with thicker sprockets and chain...is this not so?

I thought all single carb heads have a thinner chain up till 2000.

in any case

royal is yours the same as 88 and up bikes? I thought you posted some pics about that

cheers bud
converted it bro!!!
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Old 02-24-2013, 01:24 PM   #7011
brucifer
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Quote:
Originally Posted by IronSpadeCycles View Post
Have any of you guys had any problems with gears slipping on any of the older XR6's? I have an 88 model with a fair bit of work done but the engine has never been apart to my knowledge.








I'm officially the 4th owner but when I went to title and register the bike as a street legal DS bike I tracked it down to the original owner and he explained the bike had been stolen from him back in 1990. He was totally cool and just signed over the old title to me, mostly he was please to finally find out about what happened to his forest friend.

Over the last couple years that I've owned it, I've noticed that occasionally it will slip or feel like teeth are missing in 3rd gear as I'm accelerating hard to 4th gear. I only notice it on the pavement and only if I'm really pushing it, its almost a feeling of very slight wheel spin on loose dirt, then it catches and runs fine. And it only usually happens once while in 3rd going to 4th. I've honestly never tried to just ride it in 3rd to see if I can get it to slip repeatedly either.

I'm a little hesitent to pull the motor and split the cases to find out that nothing is really wrong but I was mostly wondering if this might be a common problem for our big pigs. Anyone else feel this happens to them? I've checked the oil every time I've changed it and nothing metal is showing itself but again, this could have happened years ago with a previous owner.

Thanks for your input. Later Travis
Evidently some of the '80s XR600s did have problems with 3rd gear. What you're describing sounds like the gear isn't engaging fully into the "dogs" and/or the dogs are rounding off. Or, possibly a bent shift fork which would also cause that to happen. Regardless, you're going to have to pull it apart and repair it. It will only get worse if you don't.
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Old 02-24-2013, 01:35 PM   #7012
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Thanks a lot for the explanation. That makes perfect sense.
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Old 02-24-2013, 02:31 PM   #7013
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Originally Posted by IronSpadeCycles View Post
Thanks a lot for the explanation. That makes perfect sense.
I had a similar issue - it was just old saggy clutch springs. Put in some new EBC units and the clutch stopped slipping. So before you start digging that deep into the tranny, pick up some $15 springs and give it a whirl.
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Old 02-24-2013, 02:47 PM   #7014
nikolic
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Originally Posted by elsalvadorklr View Post
good luck man...any tips on racing the xr welcome here! jajaja
Hoped I can get some too Still works in progres, have'nt tried a tm40 yet
but tought someone could advise me what jets should I cary with me. Tought of bringing a few pilots, think everything else I can tune...

works so far...

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Old 02-25-2013, 12:31 AM   #7015
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Quote:
Originally Posted by IronSpadeCycles View Post
Over the last couple years that I've owned it, I've noticed that occasionally it will slip or feel like teeth are missing in 3rd gear as I'm accelerating hard to 4th gear. I only notice it on the pavement and only if I'm really pushing it, its almost a feeling of very slight wheel spin on loose dirt, then it catches and runs fine. And it only usually happens once while in 3rd going to 4th. I've honestly never tried to just ride it in 3rd to see if I can get it to slip repeatedly either.

I'm a little hesitent to pull the motor and split the cases to find out that nothing is really wrong but I was mostly wondering if this might be a common problem for our big pigs. Anyone else feel this happens to them? I've checked the oil every time I've changed it and nothing metal is showing itself but again, this could have happened years ago with a previous owner.

Thanks for your input. Later Travis
If the gear dogs themselves were slipping out of engagement and then back, it would make a horrible noise. It sounds to me like your clutch is slipping and/or the clutch basket is becoming grooved to the point that is affects engagement. I take it you use the clutch for these gear changes when it slips?
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Old 02-25-2013, 05:01 AM   #7016
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Originally Posted by headtrauma View Post
if the gear dogs themselves were slipping out of engagement and then back, it would make a horrible noise. It sounds to me like your clutch is slipping and/or the clutch basket is becoming grooved to the point that is affects engagement. I take it you use the clutch for these gear changes when it slips?
+1
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Old 02-25-2013, 06:19 AM   #7017
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Well, it could be his clutch, but why would it only do it from 3rd to 4th shift? Seems like it would then do it from 4th to 5th change badly. I had an '82 XR500 years ago that would slip in and out of 2nd and it didn't make a horrible noise doing it.
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Old 02-25-2013, 06:27 AM   #7018
elsalvadorklr
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Quote:
Originally Posted by HeadTrauma View Post
If the gear dogs themselves were slipping out of engagement and then back, it would make a horrible noise. It sounds to me like your clutch is slipping and/or the clutch basket is becoming grooved to the point that is affects engagement. I take it you use the clutch for these gear changes when it slips?
word

check clutch first...measure springs, and discs and fibers and file the grooves if any on both the inner and oute basket...

youll be very pissed if you tear down the whole engine only to find you have the exact same issue...not to mention you will have the awesome conundrum of wether you want to replate or rebore and sleeve the cylinder etc since you have an awesome 88 engine

I just changed my clutch, everything was still in spec but visually I had some browning on the fibers and I also had zddp residue...

btw I slipped in 4th and or 5th at wot...this is becaise its harder on the engine to pull such a tall gear

good luck
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Old 02-25-2013, 06:31 AM   #7019
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Originally Posted by brucifer View Post
Well, it could be his clutch, but why would it only do it from 3rd to 4th shift? Seems like it would then do it from 4th to 5th change badly. I had an '82 XR500 years ago that would slip in and out of 2nd and it didn't make a horrible noise doing it.
}}

I read somewhere that people also were having issues with that stupid little spring on the gear shuft spindle not being strong enough or something causing a bad shift or non shift

could be any of these things at this point but I would start with the easiest stuff

I say this becaue Im so paranoid the first that always comes to mind is the WORST and usually thats when steve comes in and shuts me up and says hey its this simple thing

fix it and ride and well he is always right jajajajajajaja!
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Old 02-25-2013, 06:38 AM   #7020
mcma111
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Yeah!

It's not the shift drum spring BTW.
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