So my timing belt broke, now what?


Information and questions on GL1100 Goldwings (1980-1983)
  • Sponsored Links
User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

So my timing belt broke, now what?

Postby guitarlos » Thu Aug 06, 2015 8:13 pm



I changed my timing belts 23,000 miles ago. I used Napa belts, all the timing was dead on. Bike died on me about 10 miles from home, this year, and I did get it to start to drive it home (unbenounced to me that I was running on two cylinders and that my timing belt was broken). It sat for a month because I was pretty pissed at the situation.

Tonight I took off the timing cover to find that one of my belts is not a circle anymore.

I do have another set of heads that I could replace, but should I just change out the belt and see what happens or go for changing out the head?

I'll never use Napa belts again, gonna try Gates this time around.

Thoughts? Advice?



indianakid
Posts: 125
Joined: Sun Sep 26, 2010 5:28 pm
Location: long beach, ca
Motorcycle: 83 GL1100 I

Re: So my timing belt broke, now what?

Postby indianakid » Thu Aug 06, 2015 8:42 pm

sorry to hear about your bike. running it with a broken belt pretty much guaranties the the valves are bent. the head will have to be removed to inspect the pistons for damage. if no damage exists then a replacement head would be the way to go. you could inspect the removed head to determine if it is serviceable / rebuild-able with new valves if the seats will clean up. best of luck !!!!

User avatar
RBGERSON
Posts: 2621
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: So my timing belt broke, now what?

Postby RBGERSON » Fri Aug 07, 2015 7:41 am

Before you pull the head..put the one new belt on and see if it all works..turn engine by hand to see if you have any valves hitting pistons..if not then do a compression check to see if the valves are still seating properly. You could be the luck one and the belt broke at the right time and nothing got hit or bent..unlikely but worth a check before you pull the head.

since you didn't mention a loud bang when this happened you may be in luck????
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

Re: So my timing belt broke, now what?

Postby guitarlos » Fri Aug 07, 2015 7:44 am

There was no loud bang and I was actually able to get it back running, albeit on two cylinders though.

Thanks!

User avatar
littlebeaver
Posts: 4420
Joined: Mon Sep 21, 2009 6:11 pm
Location: Kansas City, Kansas
Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: So my timing belt broke, now what?

Postby littlebeaver » Sat Aug 08, 2015 8:17 pm

I thought Gates made Napa belts....Hummmm :shock:

User avatar
LittleGoldy
Posts: 31
Joined: Sun Jul 26, 2015 11:41 pm
Location: Lake Worth FL
Motorcycle: 1983 GL1100, 1982 GL100 Aspencade (parts bike, ugh got shafted on ebay) 1983 XJ750 Seca Sold, 2003 Kawasaki ZX1R Sold, 1980 GS750E Sold, 1973 Kawasaki H1 Triple 500 (first bike ever) Sold

Re: So my timing belt broke, now what?

Postby LittleGoldy » Sun Aug 09, 2015 11:47 pm

So the BIG question especially for me as I was about to undertake this WHAT belt is recommended. The sky high Honda belt? Surely not NAPA, Gates is not especially appealing either (former experience). Curious in NC
You can do anything, but not everything.
Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away. :ugeek:

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: So my timing belt broke, now what?

Postby WingAdmin » Wed Aug 12, 2015 1:46 pm

NAPA belts are Gates belts, just with a NAPA name on them. They are of high quality, and many of us have used them for many years.

What happened to you is unfortunate - it definitely should not have broken when it did. Why it broke is not known right now - was the belt defective? Was the tension too high? Was there a mechanical failure in the head that precluded the belt failure?

Many of us have many tens of thousands of miles on NAPA belts with no issues. Your only real alternative is the Honda OEM belts.

User avatar
littlebeaver
Posts: 4420
Joined: Mon Sep 21, 2009 6:11 pm
Location: Kansas City, Kansas
Motorcycle: 1981 gl 1100 I , 79 Yamaha XS11
Special, 82 Kawa 750 CSR, 82 Kawa 750 LTD, 03 Kawa Nomad 1500, 99 Kawa Voyager 1200

Re: So my timing belt broke, now what?

Postby littlebeaver » Fri Aug 14, 2015 10:09 pm

When I installed mine, as most guys do, I rotate the crank 2 revolutions from the backside of the crank, now when I do this I feel the tension on both sides as I go around and what I am doing is feeling for the tightest point that the belt reaches and if I feel it's too tight I will back off a little on the tension, one side will be looser than the other a bit and as it rotates the other side will gain the tension and you will feel it loosen on the side you just adjusted... It's so fun to get it perfect :shock: ....One time, I had the belt on the right side way to tight and never knew it until I started playing with it....Could be what happened, Might have been too tight, not saying it was but maybe... It's a possibility.....But I don't know .... :shock: It's really a art at getting them perfect...

User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

Re: So my timing belt broke, now what?

Postby guitarlos » Fri Aug 21, 2015 3:27 pm

I finally found time to get the head off.

Thanks goodness, no hole or dings in the piston. Looks like its valve replacement time though.

As expensive as it was, I went ahead and ordered the OEM Honda belts.

Maybe I just got a bad belt, the other one seems fine, tension isnt overtight, in my opinion. Who knows, but my trust in Napa and Gates now, as far as these belts is gone.

User avatar
WingAdmin
Site Admin
Posts: 17046
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: So my timing belt broke, now what?

Postby WingAdmin » Fri Aug 21, 2015 3:30 pm

How is the tensioner wheel? Is it turning freely, with no free play? Was the belt snapped, or frayed? Any chance you could post a couple of pictures?

User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

Re: So my timing belt broke, now what?

Postby guitarlos » Fri Aug 21, 2015 4:55 pm

Tensioner wheel spins freely, no wiggles to it that I can see. Not sluggish at all.

I threw out the belt when I took it off, but it did look frayed. I didnt snap any pics of the belt although hindsight.....smh.....

dumbdan
Posts: 28
Joined: Mon Jun 08, 2015 7:05 pm
Location: Escondido Ca. 92029
Motorcycle: 1982 GW1100 Interstate

Re: So my timing belt broke, now what?

Postby dumbdan » Sun Aug 23, 2015 2:03 am

Since we are on the topic of belts. I have an 82 GL1100 and changed the belts and idlers and set the belt tension according to the service book.
My question is this. When I ran the engine I noticed a little wobble in the right side gear that attaches to the cam. I pulled the valve cover off and everything looked fine and nothing was loose but the little wobble bothers me. I did not pull the gear and check anything else.
Can you get me on the right track or do you think this is nothing to worry about? The wobble is about 1/16 of an inch.

Thanks

User avatar
Johnyy Smoke
Posts: 599
Joined: Sat Nov 26, 2011 6:44 am
Location: Se Minnesota
Motorcycle: 1980 GL1100
Vetter. "Its like Deja Vu all over again".

Re: So my timing belt broke, now what?

Postby Johnyy Smoke » Sun Aug 23, 2015 6:34 am

I would pull the gear and make sure the "key" is installed properly. Sounds like the gear maybe off center, somehow.
Regards, Johnny

User avatar
RBGERSON
Posts: 2621
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: So my timing belt broke, now what?

Postby RBGERSON » Sun Aug 23, 2015 7:47 am

What kind of wobble..front to back or side to side? front to back loose bolt on the cam wheel?? Side to side worn shaft or cam but hard to image that happening as it's a tight fit and they move together not a rotating thing..the key prevents that.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

dumbdan
Posts: 28
Joined: Mon Jun 08, 2015 7:05 pm
Location: Escondido Ca. 92029
Motorcycle: 1982 GW1100 Interstate

Re: So my timing belt broke, now what?

Postby dumbdan » Sun Aug 23, 2015 9:27 am

Thank you, It is tight on the shaft. It is as if someone hit the pulley front as the movement is front to back not side to side. Almost as if the pulley itself was bent. I have never had it apart before and I have owned the bike since 1986. I did check the valve clearances and they are perfect.

dumbdan
Posts: 28
Joined: Mon Jun 08, 2015 7:05 pm
Location: Escondido Ca. 92029
Motorcycle: 1982 GW1100 Interstate

Re: So my timing belt broke, now what?

Postby dumbdan » Sun Aug 23, 2015 10:43 pm

Thanks for the help. For some reason the bolt was loose and the pulley had backed off about 1/8 th of an inch. I took it off and cleaned everything up and put the pulley on and used threadlocker on the bolt and it runs straight now.

User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

Re: So my timing belt broke, now what?

Postby guitarlos » Mon Aug 31, 2015 9:09 am

Im rebuilding the head, using Parts n More from Canada.....4 new valves, seals, gaskets, etc.....

anyways, my question is, can I get away with just rebuilding one head at a time or will this in turn, mess up other aspects of the engine?

Anyone in the know?

Thanks in advance!

User avatar
RBGERSON
Posts: 2621
Joined: Tue Mar 09, 2010 7:57 am
Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: So my timing belt broke, now what?

Postby RBGERSON » Tue Sep 01, 2015 7:44 am

Shouldn't be a problem the only issue could be compression if the old head/valves aren't seating well so low compression while the new ones do, so higher compression..you don't want compression to vary between cylinders by much 5lbs. +/- a bit. Only way to know for sure is to do one and check the compression.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

User avatar
DaveDanger
Posts: 75
Joined: Tue Apr 24, 2012 2:12 pm
Location: Columbus, Georgia
Motorcycle: 1983 GL1100A Aspencade

Re: So my timing belt broke, now what?

Postby DaveDanger » Tue Sep 01, 2015 12:32 pm

Obviously, there's no guarantee of any belt lasting forever, but by the same token, any belt can fail prematurely. I personally swear by Gates belts. In my line of work (aircraft maintenance), I find almost every aircraft belt for any manufacturer of airframes (Cessna, Beech, Piper, etc) or engines (Continental & Lycoming) use belts manufacturerd by Gates, even when they're labeled otherwise. Even when a belt ordered from the manufacturer arrives, it many times is in a Gates sleeve. They are not prone to early failure. They will fail due to fatigue, uneven alignment, extreme age, etc. just like any other brand. Sounds like you got a defective belt. That happens as well.

This post is making me seriously plan my own belt replacement. To my knowledge, mine is still on the original (1983) belt... with only 20,000 original miles. I've put about half of that on it since I bought it and restored it to running condition about 3 years ago.

DD
A successful leader is someone who may be chased down the street by an angry mob but will make it look like he is leading a triumphal parade.

User avatar
Mh434
Posts: 943
Joined: Tue Mar 25, 2014 10:24 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1997 gl1500 SE
Previous:
1981 GL1100I
1989 Kawasaki Concours

Re: So my timing belt broke, now what?

Postby Mh434 » Tue Sep 01, 2015 12:46 pm

As an aside, I came across interesting information on belt life when I had my Porsche 944. They, too, have an interference motor, and the consequences of belt failure can exceed the value of the car. I was advised that belt life in the 944 should be considered 2-3 years, regardless of mileage. In fact, I was told that because the belts (Gates are the factory replacement) break down when exposed to oxygen, to be sure to purchase new belts which are fresh. Date of manufacture is shown on the sleeve, and belts over 2 years old should not be installed.

I don't know if this affects the OP's situation or not, but it's worth considering in future belt purchases!

User avatar
guitarlos
Posts: 146
Joined: Thu Sep 17, 2009 5:45 am
Location: Speedway IN
Motorcycle: 1980 GL1100

Re: So my timing belt broke, now what?

Postby guitarlos » Thu Sep 03, 2015 4:52 pm

Belts a re cheap compared to what I have in parts so far. ;)

Valves showed up today. Not sure if Im going to start lapping tomorrow or this weekend. Hoping to have everything back together by Monday for the Holiday ride.




Return to “GL1100 Information & Questions”




Who is online

Users browsing this forum: No registered users and 2 guests