Sheared engine mount bolt inside mount

impression

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5:13 PM
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Apr 30, 2008
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Location
Sydney, Australia
Gday all, well umm yah. the left engine mount bolt got sheard and there's 5mm of exposed bolt for me to deal with

i tried using easy outs, but in pre-drilling the bolt for the easy-out tool it snapped off inside the bolt.

so, in desperation i tried to drill out with a larger drill bit, but it just spins on top of the previous drill bit broken inside of the bolt.

Using pliers was no help in trying to manually undo the bolt as trying to undo the bolt the pliers just slip along the thread on the exposed bolt.


i believe my only cause of action is to weld either the middle mount piece permanently to the engine or to weld an old spanner or something to the exposed bolt.

Welding an old spenner ect: i don't think will work as the bolt sheared off is grade 8 high tensile steel i thik and the block ( mount itself and the rest of the engine) is soft aluminium.

any tips for me ?

edit: i also don't have any welding gear :(
 
Ultimately i suspect this is going to get ugly,but let's deal with clean/simple fixes first.
First:u could try filing FLAT opposite sides of that 5mm high-tensile bolt u have sticking out & putting a small shifter there to undo.Apply heat BEFORE u try to tension the bolt out...even if it's heat in the form of a paint-stripper gun any heat is better than none.
The 5mm bolt is important in it's present form so try not to wreck it.
Pics would help.
 
You said that you think that the bolt/stud is a grade 8. Are we talking a happy time motor ? Because unless you changed the stud your self it's made of silly puddy. Maybe grade 2-3. If there is still 5mm sticking out heat the block with a torch and put a pair of vice grips on there and crank it out...POPS
 
You said that you think that the bolt/stud is a grade 8. Are we talking a happy time motor ? Because unless you changed the stud your self it's made of silly puddy. Maybe grade 2-3. If there is still 5mm sticking out heat the block with a torch and put a pair of vice grips on there and crank it out...POPS


i bought the bike from another member here, according to him he changed everything he could to grade 8 high tensile bolts.

i was going to grab some vice grips today, but i opted not to and talk to a few mechanic shops on the way to work, so now i'm going to take the engine in and see what they can do for me :)
 
ride the motor bike

i opted not to and talk to a few mechanic shops on the way to work

that may be the best idea
although with the right tools and some or much shop experience
seems almost anything can be done

it's hard to beat a man at his trade
mechanic and machine shops deal with these issues almost daily
should be about a 5 min fix -- key word -- should
cost --- free to 7 dollars

ride the motor bike
 
that may be the best idea
although with the right tools and some or much shop experience
seems almost anything can be done

it's hard to beat a man at his trade
mechanic and machine shops deal with these issues almost daily
should be about a 5 min fix -- key word -- should
cost --- free to 7 dollars

ride the motor bike

If the guy is cool and helps me out he'll get a suprise bottle of Jack Daniels ;) 700ml
 
then when it's repaired

If the guy is cool and helps me out he'll get a suprise bottle of Jack Daniels ;) 700ml

that could be the beginning of a you and machine shop guy friendship

yes years ago I worked in a large machine shop or two
sure is nice having at most times the exact right tool

today my home tools are a little slim compared to back then

I have a buddy down the mountain -- pretty full machine shop
for those type things gives me a chance to drop in and see him
and the price for these types of small repairs is usually -0-

have a good day -- then when it's repaired -- ride the motor bike
 
Fair enough if u opt to take it to a mechanic,not my first choice but to each their own.Make sure u get to the cause of the problem(eg,excessive vibration) so it doesn't happen again.
 
Fair enough if u opt to take it to a mechanic,not my first choice but to each their own.Make sure u get to the cause of the problem(eg,excessive vibration) so it doesn't happen again.

well, rather pay a few bucks and have someone with experience doing this many times have a go and learn from it, he/she also will have a lot more and probably the right tools available handy :)

that and i need to go to the same place anyways for a motorbike rear vision mirror :p
 
well, rather pay a few bucks and have someone with experience doing this many times have a go and learn from it, he/she also will have a lot more and probably the right tools available handy :)

that and i need to go to the same place anyways for a motorbike rear vision mirror :p
That's why i said "fair enough"....if u don't have the right tools your behind the 8-ball to start with.
 
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