r350lc engine casing bolt removal

[noonster]

Whats the best way to remove the engine casing bolts without stripping or shearing the bolts.
looks like these bolts have been in a long time


Thanks

[Deleted]

If it's a JIS screw use a JIS screwdriver. Good quality sockets, not the sh!te they sell in DIY stores. Decent tools aren't cheap

A small amount of heat if it doesn't move at the 1st attempt.

If you aren't sure then take it to a recommended specialist. Would I chance using someone advertising there services on eBay, probably not. Ditto tools.

[noonster]

These are the M6 bolts that go through the top casing,hard to put heat to bottom of the threads.

[Deleted]

Well it is, just heat the head of the bolt and miraculously it transfers heat to the other end !!!

[earthman]

Oct 24, 2019 21:37:09 GMT 1 noonster said:

These are the M6 bolts that go through the top casing,hard to put heat to bottom of the threads.

If the engine is currently working/in a bike, try running it up to temperature, that will get those threads warmed up.  

[noonster]

engines been out of the bike for some years

[JonW]

Just undo them, Ive never had a problem with them coming out with a socket set. Undo them in the reverse of the numbers of something close to that so you dont undo one end/corner first.

And remember that the nuts underneath also from part of that pattern, undo and do them all together to split the cases.

[JonW]

I should add that these are not done up that tight really, something like 7 lbs/ft, the nuts are just under double whatever the top ones are.

[midlifecrisisrd]

As jonw says they come out easy

Never seen any corrosion on the threads as they tend to seal with the washer

They also tend to pick up some case sealant which helps protect them

May be wrong but think they are higher tensile too

Steve