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GPZ1100 Frame
Moderators: paul doran, Taffus, KeithZ1R, chrisu
GPZ1100 Frame
Is it possible to fit a Z900/1000 engine into a gpz1100 frame?
foz
foz
Rickman CR1000, Harley Roadking
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Re: GPZ1100 Frame
I pretty sure you can but someone will be along to say for definite.
Why do you want to do it?
Why do you want to do it?
An expanding collection of parts pretending to be a Z1100R and a Yamaha FZ750
Re: GPZ1100 Frame
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
Here's the project http://z1ownersclub.co.uk/phpBB3/viewtopic.php?f=7&t=24650
A2 1979-80. A1 1980-now
Re: GPZ1100 Frame
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.
If anyone has pics or tips it would be useful.
Re: GPZ1100 Frame
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.
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
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
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
"Set the GRINDER on it"
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Re: GPZ1100 Frame
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
An expanding collection of parts pretending to be a Z1100R and a Yamaha FZ750
Re: GPZ1100 Frame
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
foz
Rickman CR1000, Harley Roadking
Re: GPZ1100 Frame
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.
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
The Z!R frame would work, but I cant see it posted, can you highlight for me?
foz
foz
Rickman CR1000, Harley Roadking
Re: GPZ1100 Frame
Plus. old zed tanks won't fit a GPz frame..the tubes are spaced much wider.
Re: GPZ1100 Frame
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
Cheers
Gus
"Set the GRINDER on it"
Re: GPZ1100 Frame
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
"Set the GRINDER on it"
Re: GPZ1100 Frame
As Gus says below, but i emailed and pm'd you last night.
Re: GPZ1100 Frame
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.
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