GSX-R 750 frame differences

[snoorder]

Anybody out there who can tell me if the 88 till 91 750 Slingshot frames are the same and if not, what are the differences.

I believe 88/89 are the same and 90/91 are the same. No clue if I am right..

Thanks in advance!

[Captain Chaos]

'91 has a wider rear subframe than the older ones. And bolted-on fuel tank rubbers, not glued on.

'90 and '91 also has different swingarm axle arrangement, with adjusting nut. '88 - '89 is more simple.

In a '90 - '91 it's possible to remove the rocker cover from an 1100 engine, in a '88 - '89 it's not.

Probably some more differences, can't remember now.

[MeanBean49]

88 and 89 750 frames are different size/geometry to the all the other slingshots 750 and 1100. Due to using the shortstroke motor. They are smaller.

All the others are the same geometry and size, iirc the 1100 uses bigger ally beam. Also subframes are slightly different due to the seat unit changing on later models.

All engines do fit in all frames but the its an engine out job to get rocker cover off if using other motors in 88/89 frame.

[snoorder]

Thanks guys. 

The thing is, I have a 1990 750L track bike. And by now almost enough spare parts to build another bike. So I am looking for a frame. 

If I understand correctly the 91 subframe is wider so probably my 90 bodywork will not fit? 

[Captain Chaos]

you understand correctly.

[MeanBean49]

44 minutes ago, snoorder said:

Thanks guys. 

The thing is, I have a 1990 750L track bike. And by now almost enough spare parts to build another bike. So I am looking for a frame. 

If I understand correctly the 91 subframe is wider so probably my 90 bodywork will not fit? 

The fairings and bracket are also different, not just seat unit

[snoorder]

Thanks agian, I have to get me another 1990 frame then! Cheers