Page 1 of 1

Bottom-end compatibility 750 <> 907ie

Posted: Wed Jun 29, 2011 7:16 pm
by 907ie toolkit owner
Can anyone give a quick but well informed answer to this naiive question:
Is the bottom-end of the 750 the same as for the 907? Can I rebuild the heads from the 907ie onto a 750 bottom-end, with all its auxiliary stuff like water pump??

thanks

Easier to get an answer here than hope I get the answer right by inspection / documentation review.

Re: Bottom-end compatibility 750 <> 907ie

Posted: Wed Jun 29, 2011 8:18 pm
by paso750
no it`s not.
The 750 is an oil cooled, 5 speed gearbox engine with 88mm pistons, the 907ie is a water cooled, 6 speed gearbox engine with 92mm pistons.
Due to the different gearbox the 907ie engine case is a little wider and the cylinder stud distances are bigger due to the larger pistons. Of course the engine case opening for the cylinders is also larger.

G.

Re: Bottom-end compatibility 750 <> 907ie

Posted: Wed Jun 29, 2011 11:30 pm
by 907ie toolkit owner
paso750 wrote:no it`s not.
.

Ok thanks, thats the sort of definiitive answer that makes being on a forum so worthwhile.

Tom