Justasking,
You have a bigger problem here. Not only is your case screwed up,, the dealership service person screwed it up. He put the wrong length bolts in the wrong holes and stripped out your motor. they did it, push really hard, yell, screw, cry, threaten to sue, do what ever it takes to get them to fix it, the did it, they should fix it. You have a hard fight ahead of your, prepare for the worst and fight tooth and nail...
herbdon out......

 

herbdon,

I like your statement and I agree fully, but these are just words.. I need facts!!

Wrong bolts, but where, which ones and how do I prove it?? Where does it say where these bolts go?? The manual doesn't specify and the parts picture doesn't specify except by a different part number.. I watched when they were removed so I know exactly where they were but nothing they have shown me identifies where each bolt goes. Therefore are they even in the wrong holes????

Anyone have any facts I can use to fight this??

Thanks

 

Herbdon is right, they put the wrong bolts in it sounds like. I have mine apart right now and went to check it out. All 4 cylinder bolts are the same. The head bolts are ALLMOST the same, all 4 of them are also the same length and when I tried just now they would thread into the case very easy but would strip if torqued since the threads on the head bolts is slightly smaller (when threaded into the case the head bolts an inch or so they would still move back and forth - loose threads)

So if your case is broken at the base of the cylinder I would say it is because the headbolts were installed in the cylinder atleast in the front, not torqued because they were afraid they were going to strip and then when ran they pulled out a little or broke then the movement begins, you wouldnt have really noticed any performance problems since its the base gasket and all but it sure does suck I hope you get it fixed.

 

OOOOKKKKK,

All 4 bolt that hold the cylinder to the case are the SAME??!! (actually there are 6, the other 2 are allen wrench screws)

Not what I saw. And the computer also identifies them with two different part numbers.

Now what???

If it was like that from the start whose falt is it?

I'm trying to build a case without going to the enemy if you know what I mean...

Called another shop a bit away and they said that although they have not heard of this, if the bike is used for motorcross the mounts could be loose and cause flex. Would not say yes or no about anything...

Will go back to the shop this week and do a look see about the head bolts and cylinder bolts. If your are right then that is the answer, but why the two diff part numbers? Why does'nt the manual make note of them?

trying to stay calm....

 

Your right they are different part numbers but the only difference I can imagine is the grade (strength) since the 4 cylinder bolts are identical in lenght and thread to me. The head bolts being the same way but only 2 are listed on the parts fiche that riva has.

 

So what does this mean. If it's a grade thing is the only diff how would I or anyone know which bolt goes where. The book they showed me didn't identify anything and the computer wasn't a help.

I guess I really need to see those bolts again. I know I saw two of them just slightly longer than the other two.

hummm the plot is thickining more..

 

Airraptor,

What locations were the long bolts / short bolts in when you pulled them out? This may be the key to the whole thing.

Warrior 007,

This is getting confusing. Your cylinder bolts are the same length, but me and Airraptor have two diff sizes. Now who is correct?

and in what postion do the longer bolts go in??

MY BRAIN.... IT HURTS!!!!

 

you guys are right, guess I looked to quick, there are 2 that are about 1/4 shorter than all the rest. Possibly your mech put the longer bolts in the shorter crank case holes and tightened it down, when the bolt bottemed out in the case instead of stopping he forced it, instead of stripping it broke the case. This could be comfirmed with pictures to determine if the threads portion of the case came away from where the bolt would normally bottom out.

The 4 head bolts are the same. 2 of the 4 cylinder bolts are 1/4" shorter

 

The long bolts go on the left side (shifter Side). If you put the short bolts there and torque it own it will strip the threads out. It may torque down during installation and strip or pull out the threads when running the motor. That would explain why two of the bolts were loose when they took it apart. This same thing happened to me once but the case did not crack. BTW The long bolts did not bottom out in the short bolt holes.

 

Great info!

Now can anyone tell me where it says that these bolts go on the left side only?? They showed me a manual that did not even mention that the bolts being diff lengths.

One would think that if this is an important step in the process there would be a note or caution or something.

Is this a shop fault, manual fault or just my bad luck....


Also, it doesn't make sence why they would torque properly without bottoming but would then pull out during operation... that is unless that back end of the case being able to move up and down NOW comes into play.

Huummmmmm