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Gpz1100 a1 1983 barrels

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stusco
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Location: Edinburgh

Gpz1100 a1 1983 barrels

#1 PostAuthor: stusco » Sat Mar 08, 2025 3:37 pm

Anyone got a spare set for sale they will probably be getting bored too 1170 so bore don’t have to be mint but the fins and faces need to be in good condition

stusco
Regular Poster
Posts: 99
Joined: 2nd Dec 2020
Location: Edinburgh

Re: Gpz1100 a1 1983 barrels

#2 PostAuthor: stusco » Sun Mar 09, 2025 2:11 pm

Im looking on ebay and found some barrels but they are not the same as mine
IMG_1550.png

Mine doesn’t have a recess round the corner stud holes
What does that mean?

stusco
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Posts: 99
Joined: 2nd Dec 2020
Location: Edinburgh

Re: Gpz1100 a1 1983 barrels

#3 PostAuthor: stusco » Sun Mar 09, 2025 2:13 pm

IMG_1538.jpeg

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Al
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Re: Gpz1100 a1 1983 barrels

#4 PostAuthor: Al » Mon Mar 10, 2025 9:47 am

They tried different numbers of counter-bores; 4 and 2 and more and less and none. All leaked at some point. You can use any of the 1100 sets; z1100 shaft, Gpz1100 B and Unitrak and Z1100R1, ZN so long as you use an MLS gasket which i guarantee will not leak. Cometic one-piece and you'll have to take a chance.
If you have concernes beyond that you can swop the liners into your existing barrels relatively easily.
AL
1981 J1

stusco
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Posts: 99
Joined: 2nd Dec 2020
Location: Edinburgh

Re: Gpz1100 a1 1983 barrels

#5 PostAuthor: stusco » Mon Mar 10, 2025 11:13 am

Looking at the parts catalogue it looks like the ones on ebay from Germany are A2 and have o’seals between barrel and head

DeadZedDave
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Re: Gpz1100 a1 1983 barrels

#6 PostAuthor: DeadZedDave » Wed Mar 12, 2025 5:48 pm


stusco
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Posts: 99
Joined: 2nd Dec 2020
Location: Edinburgh

Re: Gpz1100 a1 1983 barrels

#7 PostAuthor: stusco » Fri Mar 14, 2025 10:04 am

Thanks for the replys ive got a set well Grumpy 1260 has, he is reboring the tomorrow to fit my pistons.


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