Yamaha Calling all old rhino mechanics

[jlbierig450r]

Have a few questions for the guys that have had the exhaust studs break off in the head. I have a real mess on my hands now and probably have to remove the head to work on these bolts. (yea tried to drill it out while still on the engine) DOH

Has anyone heli coiled these studs? How deep can you drill don't want to get into the water jacket. Can you do this on the machine? Thanks for the help guys.

 

[onerich]

Have a few questions for the guys that have had the exhaust studs break off in the head. I have a real mess on my hands now and probably have to remove the head to work on these bolts. (yea tried to drill it out while still on the engine) DOH

Has anyone heli coiled these studs? How deep can you drill don't want to get into the water jacket. Can you do this on the machine? Thanks for the help guys.

I have heard heat them up(maybe with a torch) if you need to take them out , but I think your passed that Good luck

 

[DUNE DUMMY 29]

I THINK BREVEN HAD THIS HAPPEN. I KNOW IF HE DID HE WILL GIVE YOU THE INFO YOU NEED.

 

[07fj]

yes you can heli coil them, you will need to remove head and take to a shop really.

 

[c&c rhino]

we were always able to use an ez out with the head still attached. lots of times till i just started snugging them tight and using a second nut to lock in place. and a chain from the valve cover to the frame to limit engine flex.

 

[brevndeb]

yes you can heli coil them, you will need to remove head and take to a shop really.

x2!. That is what I did. And while I was in there I put new rings in as well and run it!

 

[the stripping shop]

you use a time sert if you scred up hole they make a big sert too

 

[jlbierig450r]

Sweet guys thanks for the replies guys. I will see what I can get done.

 

[philofab]

In the future I've always had good lust welding a little bit of stainless to the stud (if it's not to deep) and work it out while still warm. I normally TIG it but I have had Mig work too.

The aluminum expands as it sucks the heat out of steel. It's gotten me out of some jams.

 

[jlbierig450r]

Thanks for the update guys. I ended up putting a helicoil on the stud and seems to be holding so far. I tried welding a nut to the broke off stud with no luck. It was broke off to deep. So had a good pilot for the bit on the helicoil. Worked out and seems to be working fine. Thanks.