GR650 Tempter help needed

[old_skool]

Old skool, thanks for the input. I actually did go to Basscliff's site to see if he added the manual you offered and saw it wasn't there. And I have been following your Tempter thread. It looks exactly like mine...but your runs!! And you did a great job on it too. Sorry to hear of your wife's health issues and wish her and you the best. Hang on to the Tempter for now...who knows what might happen. And it looks cool!!

Thanks! I think as nice a bike as it is, we're still going to get rid of it, it will be next season before she can ride again, and if she decides to try again, we're thinking along the lines of an 800 Intruder, sits low, easy to maneuver, more power if needed, and she likes the lope lope of the twins, and she likes the looks of them as well, if she decides against riding altogether, I may just get a GK or larger twin for her and I on longer cruises, and keep my 1100.

 

[Guest]

Any way you could post a video ?

 

[Guest]

Not going to be able to post a video...but I'll see what I can do.

 

[Guest]

The more information you can get the better.

 

[Guest]

Started taking things apart for a look see. Taking some pics as I go and will post what I find if my hunt for the culprit is successful.

 

[oldrookie]

Hey Super,

Any progress on the GR mystery?

 

[Guest]

Hey oldrookie,

As it stands now, I have taken it apart as far as I could but couldn't get that one major bolt loose to get to the parts (auxiliary clutch assembly) that I need to get to.

Also, I found that I needed a dreaded "Special Suzuki Tool" ..the Rotor Holder Tool...to hold the rotor so I could loosen the bolt. Me and the boys tried several ways to try and loosen it but got to where I was afraid if we kept at it, we were bound to break/strip something. Frustration being what it is...

Bike Bandit and several other places wanted $100 plus for it but found one on Craigslist for $50 and it's in the mail as we speak. Should get it Saturday and go from there.

But on the bright side....to make a long story short...picked up an '82 GS850 today, all there, 12k miles and with title for $100!!! The next project...

 

[old_skool]

picked up an '82 GS850 today, all there, 12k miles and with title for $100!!! The next project...

Damn good deal! The deals seam to be popping up again, all the high dollar increases since spring seem to be slipping probably from no takers.

 

[Guest]

There's a back story to this buy but the bottom line is I got lucky. Be nice to people and some times they remember you and make you an offer that you just can't refuse. I got lucky!!

 

[oldrookie]

Must admit...I really, really enjoy the GR, but a bigger bike for longer rides would not be turned away because of it.

Local guy has a GS850 for sale, but 18x your price and it is a no sale to me. Might be worth it, but I don't have it.

Looking forward to pics of the two projects in process.

 

[Guest]

Ok...so I got the "Special Suzuki Tool" to hold the rotor while I try to take off the rotor securing bolt. That baby is on there tight!!! NOT BUDGING A BIT!!

My next plan of attack is to use some heat on it. I'm going to spend a few days heating it up to try and break down the loctite before I try loosening again. This is the first bike I've worked on where EVERY bolt was loctited (is that a proper word?). The battle continues...

 

[Guest]

Here's the latest update. Finally got the special tool, but had to use some heat and the proper flywheel puller/bolt to get the flywheel off. The auxillary flywheel weight system is behind the flywheel.

The auxillary flywheel system of weights and springs looks absolutley PRISTINE!! No visible damage and it looks brand new. So once again, I'm at a loss as to which way to go.

The latest decision by the "brain trust" is to put it all back together again, crank her up and run her up and down the street a couple of times with the video camera taped on the gas tank. That way we can see and hear exactly what she's doing again. The last time, we turned her off pretty quickly (up and down the street twice) as we were a little afraid of major damage as the knocking got louder the longer she ran.

What's also confusing me is that the knocking is sporadic, like once every 5 or 6 seconds. And it didn't start knocking till it had been run down the street, at start up idle there was no knocking at all and sounded fine. Seems to me if there was a major piston issue, it should knock a LOT, and right away. Am I wrong on that assumption?

Will update later..

 

[old_skool]

Here's the latest update. Finally got the special tool, but had to use some heat and the proper flywheel puller/bolt to get the flywheel off. The auxillary flywheel weight system is behind the flywheel.

The auxillary flywheel system of weights and springs looks absolutley PRISTINE!! No visible damage and it looks brand new. So once again, I'm at a loss as to which way to go.

The latest decision by the "brain trust" is to put it all back together again, crank her up and run her up and down the street a couple of times with the video camera taped on the gas tank. That way we can see and hear exactly what she's doing again. The last time, we turned her off pretty quickly (up and down the street twice) as we were a little afraid of major damage as the knocking got louder the longer she ran.

What's also confusing me is that the knocking is sporadic, like once every 5 or 6 seconds. And it didn't start knocking till it had been run down the street, at start up idle there was no knocking at all and sounded fine. Seems to me if there was a major piston issue, it should knock a LOT, and right away. Am I wrong on that assumption?

Will update later..

See if it will knock at idle or on the stand reved up slightly, it's the only way to determine where it's coming from, you can't really tell on the back of it riding down the street. Sounds like an engine tear down in the future, but be sure first.

 

[Guest]

While your in there give the crank a shake in all directions. It could be a bad thrust bearing.

 

[Guest]

old skool...there was no knock of any kind when we first started her up and revved her up on the center stand. No knock at all. That's what's perplexing me...if a major internal engine problem is going on , wouldn't we hear it then? I am leaning toward an engine break down too but looking for some kind of direction before I do that on the off case I'm just missing something.

Mekanix..will check the crank. Any chance that can be checked on the flywheel side of the engine? I already have that side open..

Thanks to both of you for your help..

 

[oldrookie]

Once the knock started, did it continue at idle? Or did you shut it down too quickly to make that call.

Thought of you the other day when mine started making a knocking sound. Had had an issue with the float needle allowing the bike to flood and I suspected there was gas in the oil. Changed it and the knock has not reoccurred.

 

[Guest]

Its easy, Put the rotor back on and pull towards you to make the crank come all the way out to the thrust bearing. Then push it back in. There might be a clunk as the crank walks from side to side.

There are 8 bearing shells that stop up and down movement and two thrust bearings that stop it from moving side to side.

It could be the counterbalance shaft that is clunking.


Also the flywheel is free floating once it hits that RPM so it could be moving in and out and causing the clunk.


It really depends on where the knock is coming from and what sound it makes.Each section of the engine has its own noise

 

[Guest]

Oldrookie..yes, the knock did continue after we ran it down the street but again, it was the odd, sporadic knock as I mentioned in an above post.

Mekanix..thanks for the info. I will have to review the shop manual before I start pulling things out. But again, thanks all and I will update later.

 

[Guest]

So here's the latest update.

I have decided that it's not the smart thing to put it back together and try running her down the street and back. I know she's got a bad knock...I know it's not the auxillary flywheel weight...I know it stops running up in power at about 3k rpms and feels like it actually slips back to first gear...

So I'm just going to pull the motor and open her up and see what the heck is wrong!

I've always wanted to rebuild an engine at least once and it seems that a twin cylinder will be easier than a 4 cylinder so what the heck. I will probably stretch it out over the summer, take my time, ask a lot of questions and ask for advice and help and hopefully have a fresh running engine in the end.

I was having trouble dealing with making this decision as everything else on this bike is good to go. Rebuilt forks, cleaned and rebuilt carbs, new sprockets, new chain, new rear tire, oil filter and oil change, valves properly adjusted, etc, etc...and I was hanging on to the hope that I could find that one, small, something to figure out the problem. But then reality kicked me in the head and said.."Just do it already". So for better or worse, here we go.

If anyone has rebuilt a twin engine before and has any advice, suggestions, tips, etc, please let me know.

 

[JEEPRUSTY]

There is a nuther member on the forum with loud metallic knocking form his GR

His looks like it is spitting out a shim
Do you have to OEM manual for the bike?
I found one but its is french.