GS 1100 Engine?

[Cafe750]

What can you knowledgeable folks tell me about a 1980 GS1100? Is this the 16V motor with roller bearings? What kind of mods are required to put it in a '79 GS750 frame? What else can you tell me about the motor, anyone? Thanks

[Newbee]

I know a little

As I recall the 1100 could either be an 8 valve or 16 valve. If the cam covers are round it would be an 8 valve, if square a 16 valve. I am pretty sure you can get it in a 79 frame buy making new motor mount brackets. The factory 1100 frame was heavier built with more bracing in certain areas than a 1000 frame...shouldn't be a show stopper?

Someone with more knowledge will answer shortly....I am sure.

[Cafe750]

Yes, it does appear to have square covers like my 16V 750. Is it a roller motor then?

[Newbee]

Yup

Yes and I think you will find alot of admirers of that power plant around here.

[rphillips]

In 1980 there were no 8 valve 1100's, so if it's an "80" it is a 16 valve. Not sure about a GS 750 frame, but will fit in a "79" GS1000 frame by fabricating the one motor mount below the primary cover, pretty simple, and raiseing the rear of the fuel tank appx. 3/4" so the petcock will clear the carbs.