Possible to fit a gs850 crankshaft in a 77-79 gs750?

[gsman]

Hi!
I am asking if it is possible to fit a GS850 crankshaft into
a 77-79 GS750 crankcase.
The 850 crankshaft has the same stroke as the 750(56,4mm)
so apart from a little higher primary gearing and also
having helical cut gears (vs750straight cut) the 850 crankshaft seems to
fit but I am not sure.
I already have a GS850 crankshaft in very good shape and
I also have the complete 850 clutch to match the 850crankshaft
helical gears.
I feel if this is possible,
as beeing helical gears vs straight cut
it would be a little more silent.
Anyone who knows?

In advance,
Thank you.

gsman

 

[Steve]

Have not seen that question asked before.

Since you already have the parts, it might be worth a try.

However, will it really be any quieter with the helical gears?
Would it be enough of a difference to justify all the work (assuming there is no other incentive)?

.

 

[TeamDar]

It will not fit. The primary gear and the main bearing that lives next to it are transposed on the two models.

 

[gsman]

The question was asked if it was possible
to do it if and when the box was opened
for other reasons.

As said,If the bearings are different I can see
that it will not fit.
Anyway,
Thanks.

gsman