Gs1100 Cam Chain Broke at 8k.

[rapidray]

Ed, educate me because it apears you know something I don't & I specialize in 16 valve engines. How are you supposed to hold the adjuster screw & get a socket over the nut to use a torque wrench? I have done valve adjustments on 16 valvers a couple of times & KNOW you need to hold the adjuster screw to keep it from turning while you lock down the nut. So.......... how do I use a torque wrench on it? Just curious & always looking to learn something. Ray.

[sparki]

i thought the same.... just nip em up and give a lil extra tweek.... again, no girlie tweek but a bronto related muscle bike kinda tweak - chances are that'll be more than the "recommended" torque setting anyway.

i once torqued up my camcover to the recommended settings... leaked all over the place. used the "feel" and it was fine after a lil fettling

just my 2p worth and may not be worth much over the years you get a feel for what is tight and what isn't. sometimes a recommended torque setting just doesn't fewel tight enough and a little tweek is needed. as i say, this is my experiance and others may well vary. please don't take this as gospel as i'm sure it isn't and others may disagree.

good luck ... doesn't look too bad, all things considered

[bellucci]

You probably know this but they sell aftermarket cam chain guides that will last forever. Not that it would of stood up to a cam adjuster screw doing 300 mph inside the engine. You can only replace them when you have the barrels off. Keep us informed and great photos.
Curt

[Big Jay]

http://gszone.biz/sprockets.html

[Texasgs]

re

Those pistons look pretty good, I would be sure the top ring groove is to spec. I have seen the top of the piston crimp down and make the top ring groove to tight. You are probably OK, just check it out.

[taswegian]

Shame about the motor.... (Cant type what I first thought, But I guess you have already said it)


"Ed, educate me because it apears you know something I don't & I specialize in 16 valve engines. How are you supposed to hold the adjuster screw & get a socket over the nut to use a torque wrench? I have done valve adjustments on 16 valvers a couple of times & KNOW you need to hold the adjuster screw to keep it from turning while you lock down the nut. So.......... how do I use a torque wrench on it? Just curious & always looking to learn something. Ray."

Ray I am not as versed in the 16 valvers as yourself. But could you use a crows foot spanner on a tension wrench????

Cheers
Tas

[Billy Ricks]

you have to...\
i repeat.
you have to crank down the adjuster nuts so this does not happen.
they are tough for there size....no torque wrench stuff...just a box end wrench and A LOT of pressure used to tighten.
i have seen this many times..damn shame.
good luck on getting it back together.
let me know if i can be of any assistance.

I spun two adjuster studs and nuts out of their rockers once on a missed shift where the tach needle got buried. I thought it was terminal the way the bike sounded. I was just a couple of blocks from home so I rode it out. Pulled the valve cover and found the two adjusters laying on top of the head, got lucky. I thought I had them torqued down pretty good but obviously not good enough.

[Nessism]

Ed, educate me because it apears you know something I don't & I specialize in 16 valve engines. How are you supposed to hold the adjuster screw & get a socket over the nut to use a torque wrench? I have done valve adjustments on 16 valvers a couple of times & KNOW you need to hold the adjuster screw to keep it from turning while you lock down the nut. So.......... how do I use a torque wrench on it? Just curious & always looking to learn something. Ray.

Ray, I know lots of things you don't, not just something.

Tighten the adjuster using one of those little tools to hold the adjuster hex, or what ever method you choose. After it's "tight" to the best of your knowledge, take a torque wrench with a socket and check to see if the nut moves before the wrench clicks off (or otherwise indicates the proper torque level). If the nut moves, the adjuster may have also so time to double check the clearance. The important detail is to train yourself to develop the proper hand feel for the required torque. I wouldn't want to have to use a torque wrench forever on something like that but it's a good reference check to make sure the nuts are properly tightened until you can fully trust your own feel.

[gs1150streetracer]

Thanks all for your reponses,I will post more pics of the engine damaged this caused tonight.....Does anyone know if i need longer rocker screws(aftermarket) for G3 cams and a 1150 head?I think this might of been the problem if so....

[gs1150streetracer]

http://gszone.biz/sprockets.html

Ordered that cam chain and copper head gasket last Monday from APE,thanks....

[posplayr]

Ray, I know lots of things you don't, not just something.

Tighten the adjuster using one of those little tools to hold the adjuster hex, or what ever method you choose. After it's "tight" to the best of your knowledge, take a torque wrench with a socket and check to see if the nut moves before the wrench clicks off (or otherwise indicates the proper torque level). If the nut moves, the adjuster may have also so time to double check the clearance. The important detail is to train yourself to develop the proper hand feel for the required torque. I wouldn't want to have to use a torque wrench forever on something like that but it's a good reference check to make sure the nuts are properly tightened until you can fully trust your own feel.

Ed given the uncertainty in torque due to stiction friction, I dont think that method would be worth trying. It is like trying to retorque a head bolt without first backing it off first.

[blowerbike]

the long adjuster's are nice and not real expensive.
they can be used on stock cams also and have a nice allen internal hex and they even come with a wrench.
the nuts come loose because they are not tightened properly.

[Nessism]

Ed given the uncertainty in torque due to stiction friction, I dont think that method would be worth trying. It is like trying to retorque a head bolt without first backing it off first.

Set the torque wrench 10% high then. Doing something, even if flawed, is better than doing nothing.

[blowerbike]

ladies...
really tight means really tight.
a torque wrench is useless on these little buggers.

[gearhead13]

I just torque mine really good, almost to the point of the threads giving way. Never had one back out.