Cylinders.

[Swiss Toni]

They’re so tight, I’ve had to strip the motor around them! 1127. I’m now left with the cylinders and the upper crankcase. The fuckers just won’t budge! When hit, they sound as if they’re part of the upper case. Any dodges to make them part company? Presently soaking in WD40. I want to avoid breaking any fins, as they’re in really good nick!

Edited June 24, 2022 by Swiss Toni

[Joseph]

Session in the oven ? That said, if it can fit in the oven 

A prop under the liners should make the alloy upper case plop down once dilated ?

[Captain Chaos]

sorry for stating the obvious but you're not doing a fish ar you?

Edited June 24, 2022 by Captain Chaos
spalling

[Swiss Toni]

WTF’s a ‘Fish’, Joris?

Edited June 24, 2022 by Swiss Toni

[Captain Chaos]

Splitting crankcases with a hammer and chisel before all the screws are undone. i thought you knew that.

Also applicable on other engine parts

[Upshotknothole]

Crank won’t budge if you try and turn it?

[Joseph]

The man said all he's got left in his hands is the cylinder block welded to the upper case, so i'm guessing he didn't forget a screw or the crank 

[TonyGee]

2 hours ago, Swiss Toni said:

They’re so tight, I’ve had to strip the motor around them! 1127. I’m now left with the cylinders and the upper crankcase. The fuckers just won’t budge! When hit, they sound as if they’re part of the upper case. Any dodges to make them part company? Presently soaking in WD40. I want to avoid breaking any fins, as they’re in really good nick!

I think your gona need some heat Toni, might be seized on the dowels !!!!  can you remove the cylinder head studs ? it might help if you can get em out. 

[gsxwill]

I have always soaked pistons in gas oil (red diesel), works well 

But if you have oil drum style barbecue, you can try the heat and cool route as suggested by @joseph

Good luck 

[Swiss Toni]

2 hours ago, Captain Chaos said:

Splitting crankcases with a hammer and chisel before all the screws are undone. i thought you knew that.

Also applicable on other engine parts

Not me, Your Lordship! 

[Swiss Toni]

1 hour ago, TonyGee said:

I think your gona need some heat Toni, might be seized on the dowels !!!!  can you remove the cylinder head studs ? it might help if you can get em out. 

It's either that, Tones, or seized on the front studs that are exposed to all the flying shite! And, I don't fancy removing the studs ... too much to go wrong!

[TonyGee]

1 minute ago, Swiss Toni said:

It's either that, Tones, or seized on the front studs that are exposed to all the flying shite! And, I don't fancy removing the studs ... too much to go wrong!

yeah your probably right,  plusgas and acetone is a good combination with a little help from a heat gun. 

[cnap504]

A good long soaking of diesel and acetone 

[clivegto]

Rust on the open to air cylinder head bolts at the bottom of the cylinders. 

[Swiss Toni]

Done! And no broken fins!

 

[Dezza]

Elaborate: how did you get the once stuck barrels to part from the top case?

[Swiss Toni]

Plenty WD over the weekend, and a good pummelling with a big fuck-off orange deadblow hammer!

Edited June 28, 2022 by Swiss Toni

[TonyGee]

2 hours ago, Swiss Toni said:

a good pummelling with a big fuck-off orange deadblow hammer!

did you throw a few swear words in as well ? always helps 

[Swiss Toni]

Of course, Tones!