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GPZ1100 Frame

Posted: Sat Nov 11, 2017 5:51 pm
Author: FOZ1A
Is it possible to fit a Z900/1000 engine into a gpz1100 frame?

foz

Re: GPZ1100 Frame

Posted: Sat Nov 11, 2017 9:14 pm
Author: Julian_Boolean
I pretty sure you can but someone will be along to say for definite.

Why do you want to do it?

Re: GPZ1100 Frame

Posted: Sat Nov 11, 2017 10:32 pm
Author: popsA1
It's not easy. I had the same idea with a Unitrak frame but when I positioned the Z900 crankcases in the frame it was obvious it was going to be a challenge. So I gave up but someone on here has done it. The front mount is way off and needs repositioning as I recall.
Here's the project http://z1ownersclub.co.uk/phpBB3/viewtopic.php?f=7&t=24650

Re: GPZ1100 Frame

Posted: Sun Nov 12, 2017 5:25 pm
Author: KWACKERZ1
I am thinking of going the other way has anybody done the reverse, GPZ into z1000/900 frame it must be possible as non kickstart engines should be shorter.
If anyone has pics or tips it would be useful.

Re: GPZ1100 Frame

Posted: Mon Nov 13, 2017 5:57 pm
Author: garyd
should be easy to put a GPz in.

I had a Harris made for a Z900...blew that up and put a GPz in. Can't remember there being any issues.

Re: GPZ1100 Frame

Posted: Mon Nov 13, 2017 6:30 pm
Author: Gus
Done rather a long time ago.

From memory the front and rear top mounts are a straight fit.

We welded another tube across the front with ears on to fit the lower mount.

And I "think" we welded ears on to the swing arm cross tube for the rear lower mount

Cheers

Gus

Kwaks 003.jpg

Re: GPZ1100 Frame

Posted: Mon Nov 13, 2017 9:02 pm
Author: Julian_Boolean
There isn't a lower rear engine mount on a GPZ1100 engine (or any J engine), the front lower is an additional one to the older engines, front mountings are rubber, rear is solid

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 8:50 am
Author: FOZ1A
I was looking to use a GPZ1100 frame, as there is a complete lack of Z900/1000 frames out there for sensible money - anyone got one to sell? I read the project threads and its not a straight forward swop. I've been offered a frame and crankcases, so could I transplant a Z900 engine internals into GPZ1100 crankcase?

foz

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 12:38 pm
Author: KWACKERZ1
There was a z1r frame for sale on here yesterday. You would be better buying that. I used to run a z1r tank on an a1 so bodywork should not be a problem.

I think an engine internals transfer would be difficult.
You can fit gpz heads to earlier engines but gearbox clutch cranks etc i suspect would not work.

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 2:42 pm
Author: FOZ1A
The Z!R frame would work, but I cant see it posted, can you highlight for me?

foz

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 6:45 pm
Author: garyd
Plus. old zed tanks won't fit a GPz frame..the tubes are spaced much wider.

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 9:14 pm
Author: Gus
Julian_Boolean wrote:There isn't a lower rear engine mount on a GPZ1100 engine (or any J engine), the front lower is an additional one to the older engines, front mountings are rubber, rear is solid


That proves how long ago it was done and the last time I looked at it :roll: :lol:

Cheers

Gus

Re: GPZ1100 Frame

Posted: Tue Nov 14, 2017 9:15 pm
Author: Gus
FOZ1A wrote:The Z!R frame would work, but I cant see it posted, can you highlight for me?

foz


Member trogg 41

viewtopic.php?f=3&t=42006

Gus

Re: GPZ1100 Frame

Posted: Wed Nov 15, 2017 9:35 am
Author: KWACKERZ1
As Gus says below, but i emailed and pm'd you last night.

Re: GPZ1100 Frame

Posted: Thu Nov 16, 2017 12:38 pm
Author: zpower
FOZ1A wrote:I was looking to use a GPZ1100 frame, as there is a complete lack of Z900/1000 frames out there for sensible money - anyone got one to sell? I read the project threads and its not a straight forward swop. I've been offered a frame and crankcases, so could I transplant a Z900 engine internals into GPZ1100 crankcase?

foz


Thats my ongoing project... Not far off now just need to find some time and enthusiasm.

Years ago I put a GPZ1100 crank, cylinders and head in to a Z900 engine for my Harris but you have to weld the supports for the rear cam chain guide into the top crankcase so the reverse is possible.

Phil.