What can a 650 I-4 be punched out too?

Dave Sloan
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04 Mar 2010 00:37 #351162 by Dave Sloan

Replied by Dave Sloan on topic What can a 650 I-4 be punched out too?

unfortunatly air cooled 750s dont have 6 gears

only the 550s and later watercooled gpz750/900s

Z650B2 - Injected

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Tyler
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04 Mar 2010 08:57 #351228 by Tyler

Replied by Tyler on topic What can a 650 I-4 be punched out too?

Its my understanding that the 6 speed internals can be installed in a 650 case, however the kick start is removed. Several people have done that one on this site.

If I knew what I was doing all the time life wouldn't be any fun.

'80 KZ650 E 700cc, dyna ignition and coils, frame up restoration, daily driver
'81 KZ1300 A3 full restoration, custom big bore pistons, 1400cc 6 cylinder super bike
"77 KZ650 B1 - Barn Find, work in progeress
"74 Yamaha DT 400 Enduro

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APE Jay
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06 Mar 2010 17:01 #351628 by APE Jay

Replied by APE Jay on topic What can a 650 I-4 be punched out too?

Injected wrote:

The bore was 73mm (+11) and stroke was increased to 60mm (+6) but it was for racing only. I believe the crank was stock but used longer rods and a spacer plate under the barrel. The motor was in a 650 chassis.

If the crank was stock, how did that increase the stroke 6 mm?

We used to do the 880 kits for one of the turbo tuners. Don't know if this would fit in a 650 block.

Jay

www.KZzone.com

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What can a 650 I-4 be punched out too?

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