Big Bore for an MS461?

[J_M____]

Even if you can press the crank apart you would need some kind of jig to keep it correctly aligned when pressing back together. It wouldn’t take much to really throw it out of wack.

 

[Deets066]

Even if you can press the crank apart you would need some kind of jig to keep it correctly aligned when pressing back together. It wouldn’t take much to really throw it out of wack.

It's been done before

 

[Deets066]

V blocks and an indicator

 

[B440]

Why swap only a longer rod? Wouldn't that leave me with the same stroke but with the piston sitting higher in the cylinder?

 

[T.Roller]

Yes

 

[mdavlee]

More room under the piston, no need to cut the base. Just cut squish lightly and you're there.

 

[B440]

But there would be more crankcase volume.

 

[mdavlee]

Which probably isn't a bad thing. The 272 pistons in a 46 jug seem to work pretty well.

 

[Red97]

100 ton press maybe

I've never been over 30ton.

Have set up some interesting scatter shields though...

Heat helps the stubborn ones

 

[mdavlee]

I've never been over 30ton.

Have set up some interesting scatter shields though...

Heat helps the stubborn ones

30 is probably plenty. I've heard of guys needing 50 to get s fee if they didn't hear them up.

 

[Red97]

30 is probably plenty. I've heard of guys needing 50 to get s fee if they didn't hear them up.

Used oem is more difficult than aftermarket from my experience.

 

[ManiacalMark]

Heat does help, I've pressed a bunch of junk cranks apart for practice. One thing I did notice is there's some sort of powered metal residue around the crank pin where it goes in the other half, possibly a flash weld material?