General Tech Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.
Sponsored by:
Sponsored by:

Exhaust/stud problems

Thread Tools
 
Search this Thread
 
Old Feb 9, 2017 | 03:46 PM
  #1  
Bogwarrior's Avatar
Thread Starter
|
Junior Member
Joined: Jan 2017
Posts: 7
Likes: 0
From: Laois Ireland
Default Exhaust/stud problems

Have had the FR for just about 3 months now and i must admit. If it wasnt for the ****ty weather here that makes a spin unpleasant, id have set something on fire!!
Ive been doing little tidy ups where i can. Most importantly, my downpipes and gaskets. When taking off the downpipes, 1 of the studs snapped. Lucky enough theres still a good bit of the stud peeking out from the headers. i ordered a set of stainless studs from wemoto. Only problem now is the studs are near impossible to get out. Im thinking it might be easiest to weld on some nuts to the studs in the hopes of extracting them before i go getting someone to tap them for me. But maybe someone could suggest some easier method?? (Swearing at them doesnt work 😂&#128514
 
Attached Thumbnails Exhaust/stud problems-20170209_131839.jpg  
Reply
Old Feb 10, 2017 | 05:00 PM
  #2  
Hawkwind2016's Avatar
Senior Member
Joined: Nov 2016
Posts: 837
Likes: 24
From: Brighton
Default

Aahhh! BogWarrior, I've been there, done that and got the bloody 'T' shirt!

The original exhaust studs, specified by Mr Honda were constructed from the best quality butter!!

My story started with a snapped bracket on the collector box and ended up with me removing the cylinder head for Chr1st Sake!!

Snapped two of the studs, luckily someone pointed me in the direction of a local guy who drilled them out and fitted Helicoils?

Refitted the header pipes with stainless studs and lashings of Copper-Slip. Never wanted that problem again!

I tried freeze spray and heat, but they were in there solid, every time a bit more would snap off.

You might have more luck, I hope.
 
Reply
Old Feb 11, 2017 | 07:54 PM
  #3  
ceebeeaarguy's Avatar
Senior Member
Joined: Nov 2016
Posts: 215
Likes: 1
From: Dorset
Default

I had the exact same problem when I ha to replace my leaking downpipes last summer. In my case, two of the studs had snapped. I wasted a lot of time, money and energy on several hacks/methods. Stud extractors, heating with blowtorch then trying to undo them, vice grips what not. Even paid a mobile mech to sort it out but to no avail. In the end I took it to a local vintage car garage. These guys worked with welders and put MOTs on classic imports from South Africa all the time. The chap mig welded a nut on the two and wrenched them out. The trick is to first tighten the welded nut a smidgen and then undo it. Of course copious amounts of wd40 or Wurth needed. If the guy is experienced he'd know how to deal with it. So just head to a welding place preferably which also does automotive stuff and not only building hardware. Oh no I didn't have to empty the tank! My suggestion would be to not waste your time and head straight to the welding shop! Best of luck
 
Reply
Old Feb 12, 2017 | 12:53 PM
  #4  
Hawkwind2016's Avatar
Senior Member
Joined: Nov 2016
Posts: 837
Likes: 24
From: Brighton
Default

Originally Posted by ceebeeaarguy
I had the exact same problem when I ha to replace my leaking downpipes last summer. In my case, two of the studs had snapped. I wasted a lot of time, money and energy on several hacks/methods. Stud extractors, heating with blowtorch then trying to undo them, vice grips what not. Even paid a mobile mech to sort it out but to no avail. In the end I took it to a local vintage car garage. These guys worked with welders and put MOTs on classic imports from South Africa all the time. The chap mig welded a nut on the two and wrenched them out. The trick is to first tighten the welded nut a smidgen and then undo it. Of course copious amounts of wd40 or Wurth needed. If the guy is experienced he'd know how to deal with it. So just head to a welding place preferably which also does automotive stuff and not only building hardware. Oh no I didn't have to empty the tank! My suggestion would be to not waste your time and head straight to the welding shop! Best of luck
^^^+1

Tried all that stuff too, also to no avail.

Probably not what you want to here, believe me, I feel your pain.
 
Reply
Old Feb 12, 2017 | 04:37 PM
  #5  
dec111's Avatar
Senior Member
Joined: Oct 2016
Posts: 151
Likes: 0
Default

I had the same prob on an earlier model cbr600

Best thing you can do, sell it.................3 mechs had told me it'd cost more than the bike's value to sort out!
 
Reply
Old Feb 13, 2017 | 02:02 AM
  #6  
Bogwarrior's Avatar
Thread Starter
|
Junior Member
Joined: Jan 2017
Posts: 7
Likes: 0
From: Laois Ireland
Default

Cheers for the info lads. Def wont be selling it yet anyways! today im going to be trying to put 2 nuts on the studs to try turn the studs to bolts. I know it sounds a bit strange but theres method to my madness!
 
Reply
Old Feb 13, 2017 | 06:09 AM
  #7  
coalminer frank's Avatar
Senior Member
Joined: Jul 2011
Posts: 1,143
Likes: 3
From: north/central WV
Default

Try tapping on them with a hammer over & over. Not hard but a lot. Maybe the shock from being tapped a lot would release the bond. I would not be paying someone to get them out. If push come to shove I would remove the forks to get some "elbow room" and try drilling them out and use a bolt extractor or drilling out with left handed bits. If that didnt work I would just drill and retap. Boom, done.
 
Reply
Old Feb 13, 2017 | 11:01 AM
  #8  
Hawkwind2016's Avatar
Senior Member
Joined: Nov 2016
Posts: 837
Likes: 24
From: Brighton
Default

Originally Posted by dec111
I had the same prob on an earlier model cbr600

Best thing you can do, sell it.................3 mechs had told me it'd cost more than the bike's value to sort out!
Seems a bit extreme to me.

I remover the head myself and had the studs (two), drilled out and re-tapped or heli-coiled (can't remember which), for £60/$90

Maybe if you're going to pay someone going rates to do all the work for you, it will work out expensive, but not if you DIY.

It might even be possible to do the work without taking off the head.
 
Reply
Old Feb 13, 2017 | 12:07 PM
  #9  
dec111's Avatar
Senior Member
Joined: Oct 2016
Posts: 151
Likes: 0
Default

Originally Posted by Hawkwind2016
Seems a bit extreme to me.

I remover the head myself and had the studs (two), drilled out and re-tapped or heli-coiled (can't remember which), for £60/$90

Maybe if you're going to pay someone going rates to do all the work for you, it will work out expensive, but not if you DIY.

It might even be possible to do the work without taking off the head.
Presuming he can't do it himself.

Mech bill in Dublin/IRE for that sort of work 1000-1200€
 
Reply
Old Feb 13, 2017 | 01:07 PM
  #10  
Hawkwind2016's Avatar
Senior Member
Joined: Nov 2016
Posts: 837
Likes: 24
From: Brighton
Default

Originally Posted by dec111
Presuming he can't do it himself.

Mech bill in Dublin/IRE for that sort of work 1000-1200€
Yeah, suppose if that was the case, might be better to cut your losses.

But if it's not a daily rider, he can try, what's to loose?

I'd never taken the head off an engine before, but I managed to get it back together again
 
Reply



All times are GMT -5. The time now is 03:07 AM.