What's the max overbore on STD gpz1100 barrels?

garyd · #1 PostAuthor: **garyd** » Fri Jan 13, 2012 3:08 pm

Years ago i bored mine to 1170 so I know thta's safe.

But can they go to 1200?

big green bus · #2 PostAuthor: **big green bus** » Fri Jan 13, 2012 6:17 pm

Anything over 1170 (wiseco) you need liners 1260cc there might be other kits with JE or COSWORTH kits that are ok I think there is a 1198 kit, but not sure who makes them

london calling · #3 PostAuthor: **london calling** » Fri Jan 13, 2012 9:10 pm

Pretty sure that 75mm (1170cc) is the limit for standard liners.
Also if you go 76mm+ then you'll need to get the crankcase machined.

garyd · #4 PostAuthor: **garyd** » Fri Jan 13, 2012 9:51 pm

Thans guys.

One for the future but as I've already done a 1170, then I might as well go the whoe hog & make it a 1260.

Gary

Pigford · #5 PostAuthor: **Pigford** » Fri Jan 13, 2012 9:54 pm

garyd wrote:Thans guys.

One for the future but as I've already done a 1170, then I might as well go the whoe hog & make it a 1260.

Gary

The 1260 liners are known to be a bit "fragile" - better off spending on a full Big Bore Block :??

garyd · #6 PostAuthor: **garyd** » Sat Jan 14, 2012 11:41 am

Can you still get a big block...or is it a case of trawling for a 2nd hand one?

neilbarrett · #7 PostAuthor: **neilbarrett** » Sat Jan 14, 2012 4:22 pm

google ape performance parts and look for the kawasaki zone

Pigford · #8 PostAuthor: **Pigford** » Sat Jan 14, 2012 5:03 pm

Try PITSTOP PERFORMANCE - good ol' Joe Hooper :wink:

What's the max overbore on STD gpz1100 barrels?

What's the max overbore on STD gpz1100 barrels?

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