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Frame/engine pairing for 7-11 swap?

  • Thread starter Thread starter MisterCinders
  • Start date Start date
M

MisterCinders

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Was spit balling ideas for a no-holds-barred GS build the other day with a friend, and I mentioned the 7-11 swap (1100 motor in a 750 frame).

Did a few searches, but cannot nail down the year/model range of the frames and engines that work for this swap. I'd assumed it was just another mod for the 77-79 GS 750 bikes, but now am not so sure.

So what's the Venn Diagram for frames and engines that can cross-breed into a 7-11 build?

TIA
 
7/11 swap

7/11 swap

Last months' issue of Classic Motorcycle Mechanics has a decent article on that subject, you can order back issues (from a US distributor) at
www.classicbikebooks.com. Unsure of any source material for the 8-valvers, though.
 
There was an article in Classic Motorcycle Mechanics dated July 2005 that described A GS 750 with a GS 1000 engine.
It doesn't mention what had to be done to fit the engine in the frame but I believe the lower brackets have to be modified?
 
You must be talking about an 1100E 4 valve engine, the 1100 2 valve engines were all shaftys . I dont know about pre-80 frames, but 80-82 750 accepts the 1100E, not the 83 & up.
 
MisterCinders said:
So is the 7-11 swap strictly a 16-valve affair?
Click to expand...
Well, no but you said 1100 and yours is a chain drive, the 1000E was chain drive, the 1100G is shaft and the 1100 chain drive is a 4 valve.
I believe you can stuff an 1000E engine in there and possibly an 1100E.
 
gearhead13 said:
Well, no but you said 1100 and yours is a chain drive, the 1000E was chain drive, the 1100G is shaft and the 1100 chain drive is a 4 valve.
I believe you can stuff an 1000E engine in there and possibly an 1100E.
Click to expand...

This would be a totally different bike, not my current 7/850.
 
So what about 1100/1150 top end and cranks on a 1000 chain drive bottom in a 750 frame?

Heh.
 
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