Time to start rebuilding the GPz

[andym]

Since it's all in bits in the wife's kids garage (basically got thrown out of the garage by a 9 year old the other day because it was 'his garage'), anyway... I've decided to throw some of it back together and bring it round my place to work on it...

So, silly question number 1:

I have the manual for a GPz 750 which looks nothing like my bike, and it says that I have to put something like 250ml of fork oil in, (I'm assuming that's each side), but the manual for the 900 which does look like my bike (but definitely 750 engine), says that the top up is 250ml, but if they have been stripped down and rebuilt (which they have) it's 338ml or there abouts... so which one do I go with?

Silly question 2: I'm unsure of what the valve clearances are supposed to be, again the 750 manual says one thing and the 900 says different... should I just go with what the 900 is telling me and adjust later if needed?

Silly question 3: when I bring the bike to mine it's mostly uphill, being in my fragile state (carrying a 50cc engine, drive and rear wheel with a bag of tools damn near killed me), would it be better to bring the bike round in bits and start building it here or make a rolling chassis, or put the engine in and take lots of breaks. (it's about a mile)

Silly question 4: during the rebuild of the clutch one of the bolts got snapped in the cage, so thinking I'd be able to just push the bolt through the back with another, got a bolt the same size and started to tighten it up gently.... that one snapped too, I've now drilled and retapped the hole with a larger bolt, will this affect the clutch (I've pulled the lever a few times before putting the side on and everything moves as it should, but will the weight of this bolt affect it and would it be worth just buying a new cage to save the hassle? (money is very short though)

Thanks in advance

[RIDINGforKICK...]

The kid is probably just parroting what they hear the adults saying.

Both the manuals must be the wrong one's, discard them or they will get you into trouble.

You'll probably find the right one online

[andym]

no the kid is saying what the family feels (long story), anyway this is similar to the bike in the 750 manual:
https://motorbike-search-engine.co.uk/classic-bikes-2/1982-gpz750.jpg
which nothing matches when I try looking for anything.... even bolt locations.

https://gpz900r.files.wordpress.com/2009/08/prospekt-gpz-900r-1986-englisch-3.jpg
This is more or less what the bike looks like (without the fairing), and everything in the 900 manual has been spot on.... bolts, wires, frame, connectors, engine internals etc

[RIDINGforKICK...]

Hmmm?

Alarm bell's are ringing!

It is supposed to be a 750, but is in fact a 900, is that it?

Could it be a ringer?

[MickC]

look at the base of the barrels, does it say 750 or 900. Not entirely sure with the later quakers, but 750-900 engine swaps are quite common on older bikes. I run a 900 in my frame, mainly because it cost the same amount to buy as a 750.
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XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1

[RIDINGforKICK...]

https://www.high-speed.ismysite.co.uk/phpBB3/viewtopic.php?f=34&t=11456

[virus]

so what you have is a bike that looks like a gpz900r but has a 750 engine?

Do you have the V5?

im going to go out on a whim here and say its not a ringer, its a gpz750r, exactly the same as the gpz900r just smaller diameter barrels, and a few other differences.


So, the gpz900r manual you have is great and covers almost everything you need to know and the 750 manual you have is for the early a1/a3 aircooled 750s not the later watercooled R model.

What you need, to cover the gaps left by the 900r manual would be a gpz750r manual supplement, one i so happen to have here from when I had my gpz750R, infact, its once i could probably be persuaded to part with for reimbursement of postage, pm me if your interested.


Cheers
John
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own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[Stonefly]

I suspect what you have is a GPz750R.
Is this the manual you need?
https://www.ebay.co.uk/itm/KAWASAKI-GPZ-750-R-SERVICE-MANUAL-SUPPLEMENT-/251037597795?pt=UK_CarParts_Vehicles_Manuals_Litterature_ET&hash=item3a7301c063
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Current......Kawasaki ZZR1200 C2H and Kawasaki ZZR600 E7
Previous....Yamaha FS1E, Honda SS50, Suzuki AP50, BSA Bantam D14, Honda CD175, Honda CB250N, Kawasaki Z250A3, Yamaha RD250E, Kawasaki Z400, Kawasaki Z500, Kawasaki GPz550, Honda NTV600, Kawasaki GT750, Kawasaki Z1000R, Kawasaki GPX250

[RIDINGforKICK...]

That supplement is deffo worth 2 quid!

[Rogerborg]

[andym]

thanks for the replies, when I bought the bike I read that there was no such thing as a 750 GPz built for the UK market... they were all 'grey imports'... it just happens to be that the one I bought has everything the 900 has, but with a 750 engine (checked the block).

V5 matches up to the frame and engine and any other numbers I could find stamped anywhere....

The original questions were if everything is matching up with the 900... should I go with the 900 settings (excluding engine settings)?

Roger, it has gone in Dear Auntie BCF previously.... I've got out... it hasn't improved.... do I cut my losses on all my bike stuff or do I fight for at least my bits of bike?

At the end of the day... I paid for this bike.... with blood, health, everything that is me etc (chuckle away), I want to keep it... I want to rebuild a semi-classic... my shrink has told me I need something like this as it is therapeutic to my well being (either that or suicide... go figure)... as my signiture says.... I've lost everything.... this is the only thing I have left... I now have 9 months to rebuild it, I have a bucket of bolts and shit loads of parts and a lot of patience.... the last thing I want is for some 9 year old little shit to go into the garage with his little shit friends and destroy what little I have left... what's the point.. I can't expect people here to understand...

good night...

[RIDINGforKICK...]

The GPZ900R manual is the correct one, but you need the GPZ750R SUPPLEMENT, for the engine.

The other manual you have is NOT the one you want.

[andym]

It's not the engine I'm worried about... the engine is a big lump at one side of the garage.... I've only taken the top cover off (and put back on without seal, only to remove at a later date).... it's everything else I want to put back together.... should I follow the 900 instructions since it all matches up with that or the 750 which it doesn't...
....
...
..
.

anyway I'm not here... this is a recording

[RIDINGforKICK...]

https://www.bikechatforums.com/viewtopic.php?t=238844&postdays=0&postorder=asc&start=50

I just has a look at your thread on your troubles, hope you don't mind me posting it here...

Good luck M8

Hope you get sorted.

[andym]

thanks for reading that thread RIDINGforKICKS, that is my past... I'm trying to keep it that way... my wife is trying to keep it going but anyway.... I'm not going to pollute this thread with it... I'm trying to move on and keep what is mine....

[virus]

right, i'll say it again.

the manual you have for the air cooled 750? throw it in the back of your shed, you dont need it, its not relevant.

the manual for the gpz900r? use it

the gpz750r manual supplement i offered for postage might be a good idea as it the gpz900r manual doesnt say whats different about the 750, only the supplement covers that.

IIRC there are a few minor wiring differences and some toque setting differences as well as the engine and gearbox.


Cheers
John
____________________
own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[bikenut]

:karma: hi dude,

the lad has a gpz750 g2 which we are slowly doing up ( me actually ) and have a haynes manual 900 based.

which motor has yours, w/cooled, lhs cam chain with screw valve working clearance adjustment rather than shim??

not got to front of bike yet so no real advise with fork oil ( anti dive ) but have some info on bike which lad can post on site for you about this model.