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valve adjustment question
Posted: Tue Dec 26, 2000 7:01 pm
by Razvan B
Hi all.
I just checked the valve clearance and they are ok expect for the left
exhaust. It is actually less then specified (0.15 ~ 0.25). It's a bit
less then 0.12mm. How can that be? I would think that under normal use
the clearance would get bigger not smaller. Is this an indication that
the previous owner worked on the engine and didn't know what he was
doing or is this normal? Should I replace it with the right thickness?
Now it's 2.70 and according to the chart it should be 2.60 to be in
spec.
Are the shims on all KLRs the same when new? If so what are the
thicknesses?
Help a confused fellow rider.
P.S: I have the engine out and the head is open. Is their anything I
should check or do before I put it back together. It's a 94 with about
31000km or 19000miles.
The chain tensioner looks ok to me. Should I really go for the 96 and
up system?
Raz
A8
valve adjustment question
Posted: Tue Dec 26, 2000 7:24 pm
by bill e goat
>
> I just checked the valve clearance and they are ok expect for the
left
> exhaust. It is actually less then specified (0.15 ~ 0.25). It's a
bit
> less then 0.12mm. How can that be? I would think that under normal
use
> the clearance would get bigger not smaller.
Razvan, chances are the valve clearance lessens as the valve head
gets microscopically hammered into the seat and gives up a little bit
of its life each time.
> Now it's 2.70 and according to the chart it should be 2.60 to be in
> spec.
2.60 is right in the normal shim thickness range. Lots of KLRs have
at least one 2.60. I removed a 2.65 and changed it for a 2.55 at my
first adjustment. Shim thickness will tend to decrease over the life
of the engine until a new valve and/or seat is required to bring the
overall length back to normal.
> Are the shims on all KLRs the same when new? If so what are the
> thicknesses?
No, they use whatever shim works to bring the new engine to operating
spec given the distance of the seated valve's stem to the cam lobe.
> P.S: I have the engine out and the head is open. Is their anything
I
> should check or do before I put it back together. It's a 94 with
about
> 31000km or 19000miles.
Everybody's old style ones seem to work fine, is what I hear.
you mechanical types please correct me if I is wong
Bill E. Goat
part of the office skeleton crew today
valve adjustment question
Posted: Tue Dec 26, 2000 8:46 pm
by Kurt Simpson (Dual Sport News)
The chain tensioner looks ok to me. Should I really go for the 96 and
up system?
__________
Elden Carl, a long time columnist for Dual Sport News has made the balancer
chain upgrade something of a crusade. He's been doing everything he can to
convince people it is dangerous to not perform an upgrade. Everyone I know
on this list who advocates the change does so because they're convinced
Elden is right. Two recent converts, Kurt Grife and Jim Bellach became so
after their machines failed with serious consequences. Some on the list
think the entire argument is blown out of proportion by Mr. Carl. I think
that is a fair statement of the different viewpoints.
If I owned a pre'96 KLR it would be the first thing I would change. Which is
another way of saying I'm convinced. But everyone must choose for themself.
Kurt
BTW Elden also recommends upgrading the clutch basket.
valve adjustment question
Posted: Wed Dec 27, 2000 12:12 am
by Razvan B
Hey Kurt thanks but no thanks. Now i'm more confused. :^(
After I saw the pre 96 tensioner and how it works I can't see in what
way it could "fail". I think it's simple and reliable. It's a spring
pushing a rod that applies pressure to the chain. Can someone with a
failed pre 96 tensioner tell me how it went wrong so I can judge by
myself if it is safer to upgrade or just not worth the time and money.
> Elden Carl, a long time columnist for Dual Sport News has made the
> balancer chain upgrade something of a crusade. Two recent converts,
> Kurt Grife and Jim Bellach became so after their machines failed
> with serious consequences.
Any new ones failed with bad consequences?
Might have just been a freak accident!!
Thankx
Raz
A8 1994.
valve adjustment question
Posted: Wed Dec 27, 2000 8:18 am
by David/Diane McMunn
At 06:12 AM 12/27/2000 +0000, Razvan B wrote:
>Any new ones failed with bad consequences?
>Might have just been a freak accident!!
>
>
>
>Raz:
The balancer tensioner spring on my A-13 broke. Not a problem
until you loosen the tensioner adjustment bolt to do the periodic
adjustment. No spring tension means the adjuster falls slack and you've
unknowingly made things far worse. Mine apparantly flopped around for
several hundred miles before picking up a piece of the spring and fouling
the camchain. I've posted the details previously.
I'd never do the balancer chain adjustment again without pulling
the mag cover to visually check the results.
As far as the tensioner itself, its not a problem. The adjusting
tab/washer issue that has been well chronicled on the pre-96's is what the
debate is about. I'd upgrade.
Dave
valve adjustment question
Posted: Wed Dec 27, 2000 9:42 am
by Bogdan Swider
> Hi all.
>
> I just checked the valve clearance and they are ok expect for the left
> exhaust. It is actually less then specified (0.15 ~ 0.25). It's a bit
> less then 0.12mm. How can that be? I would think that under normal use
> the clearance would get bigger not smaller.
>
-Yo Raz, A cuntrare. The clearances are much more likely to close than open;
never checked one that was looser on the klr or my old airhead Beemer, many
were tighter. Was told (Fred, I believe) that if you lug the engine they
open if you rev high they close.
The chain tensioner looks ok to me. Should I really go for the 96
and
> up system?
>
Make the change. Just compare the pre and post 96 systems. The new ones have
a stouter spring + the addition of a washer that gives more surface area so
the bolt actually holds the plate. Also, IMPORTANT POINT, When re-assembling
put anti-seize on the valve cover bolts. Prevents electro-somthing corrosion
that may damage the thread in the holes. Don't ask how I know.
Bogdan
valve adjustment question
Posted: Wed Dec 27, 2000 1:26 pm
by Razvan B
Hi again.
> Make the change. Just compare the pre and post 96 systems. The new
> ones have a stouter spring + the addition of a washer that gives
>more surface area so the bolt actually holds the plate. Also,
>IMPORTANT POINT, When re-assembling put anti-seize on the valve cover
>bolts. Prevents electro-somthing corrosion that may damage the thread
>in the holes. Don't ask how I know.
> Bogdan
Ok I'm allmost convinced to do the change. If I want to do it what
exactly do I have to order and what are the parts numbers. Do I just
ask for the BALANCER CHAIN TENSIONER or is there more to it?
Does FRED have it?
Might as well do it now that the engine is out and not worrie about it
on long trips. JMO
Thanks for all the info guys.
Raz
A8, Montreal CANADA
Winter is why my engine is out. Damn winter!
valve adjustment question
Posted: Wed Dec 27, 2000 1:33 pm
by Fred Hink
[b]
Yep, you're in luck. I have all the parts for the balancer chain tensioner upgrade.[/b] [b]
[/b] [b]
Fred
www.arrowheadmotorsports.com
'00 VFR800FI
'00 XR650R
(2)'94 XR650L 4 sale
'94 XR250L 4 sale (300 mi)
'78 Z1-R 4 sale[/b] [b]
[/b]
----- Original Message ----- [b]From:[/b] cccp7@... [b]To:[/b]
DSN_klr650@egroups.com [b]Sent:[/b] Wednesday, December 27, 2000 11:26 AM [b]Subject:[/b] [DSN_klr650] Re: Valve Adjustment Question
Ok I'm allmost convinced to do the change. If I want to do it what
exactly do I have to order and what are the parts numbers. Do I just
ask for the BALANCER CHAIN TENSIONER or is there more to it?
Does FRED have it?
speedo-cable attachment
Posted: Thu Oct 24, 2002 11:51 pm
by Devon Jarvis
On my A15 there's a plastic clamp that bolts to the reflector mount, on the back side of the slider a couple inches from the
fork seal. A zip-tie through the hole in the reflector mount would probably hold the cable just fine.
Devon
ksveader wrote:
> Hey,
>
> How is the speedo cable supposed to be attached to the front
> fork? Mine was zip-tied on to the leg by the Sucky SHop, but in
> the brocure pics, it looks to not be attached at all! Did those
> bastards break something else on me?
>
> Ken
> kveader@...
> Haverhill MA