550 to 750 engine swap

Hello i just bought an 83 kz550 ltd.
im getting the carbs rebuilt but i '88 750 engine with carbs and lots of other goodies on craigslist for a benjamin... so i could just get a bigger badder engine with newer carbs but is the swap possible? is there enough clearance?

what would it take to make it possible?

touchstone wrote:

Hello i just bought an 83 kz550 ltd.
im getting the carbs rebuilt but i '88 750 engine with carbs and lots of other goodies on craigslist for a benjamin... so i could just get a bigger badder engine with newer carbs but is the swap possible? is there enough clearance?

what would it take to make it possible?

Any swap is possible with a big enough hammer, but I'd wager the cost and pain of doing it would be a lot more than just buying a nice used 750 bike.

Might have a problem with the exhaust outlets not clearing where the frame down tubes reside.

bountyhunter wrote:

Any swap is possible with a big enough hammer, but I'd wager the cost and pain of doing it would be a lot more than just buying a nice used 750 bike.

Might have a problem with the exhaust outlets not clearing where the frame down tubes reside.

that is true... maybe i just have too much time and tools on my hands :laugh:

is a 650 bottem end any smaller than a 750? i know you can put a 750 topend on certain 650s;)

I believe the only thing required for a 650 bottom/750 top (size wise) is to enlarge the holes for the sleeves slightly to fit the 750 cylinders.

PLUMMEN wrote:

is a 650 bottem end any smaller than a 750? i know you can put a 750 topend on certain 650s;)

but its a 550...

touchstone wrote:

PLUMMEN wrote:

is a 650 bottem end any smaller than a 750? i know you can put a 750 topend on certain 650s;)

but its a 550...

You should probably just bolt on a turbo.....