Kawasaki Sportsbike Riders Club - Australia - Online Forum

hyside wrote:Gos Mate
It was a deal, I was a steal, in fact it was the sale of the fucking century!!
But!
It wasn't as good as my FZR600 (thanks 98ninja)

Gosling1 wrote:Photos will be put up during the weekend......

I think I need to source a ZX10 head and some ZZR1200 cams !!!!

greenman43 wrote:.....I'm too lazy to look it up right now, but isn't the valvegear also different from the ZX10 onwards ?......

ZRX Owners Club wrote:....The ZL motor is basically a GPZ1000RX motor with a shaft and pretty much the same as the GTR1000, all the motors from GPZ900R family share the same stroke of 58mm * see note below * until you get to the 1200 family which is 59mm. The head from a GPZ900R will work as will a ZRX1100 head and also the GPZ1100 watercooled head will work as does GTR and 1000RX, I believe that the smaller ( and rarer) GPZ750R head will also fit. A crank from the ZX10 is lubed better than the earlier ones and will also fit.
Kawasaki were very modular in their engine designs and the family of motors share an awful lot of parts although there are some slight changes over the years. The GPZ900R is the grandaddy of the family the GPZ750R is a short stroke/small bore version and has smaller valves than the 900R. ZL750 and ZL900 are detuned shaft driven versions of these motors
The GPZ1000RX came next and shares stroke with 900R *see note below* but clutch is slightly different as is input shaft, GTR1000 came from this and ZL1000 came from this. ZX10 came next same stroke different head design, ZZR1100 developed from this motor, ZRX1100 and GPZ1100( watercooled) same motor different head and side casings and sump, then came the ZZR1200 and ZRX1200 which are a longer 59mm stroke and use an ally plated cylinder assembly instead of steel liners. All the steel linered motors are mix and match versions of each other and as such it's possible to fit parts from them to make a hybrid motor as did a lot of grass track sidecar racers, using ZX10 motors with side draft heads fitted.

Kawasaki mid range stuff follows a similar lineage from the Z500 through the Z400J Z550 KZ550 GPz550 GPZ550 GT550 and GPZ600R/GPX600R watercooled motors using an extended secondary shaft to mount the water pump and water jacketed barrels and head using an external oil feed to the cams, this motor then had the GT550 gearbox out put shaft and bevel box fitted to make the ZL600 Eliminator.

ZZR600 64mm bore 46.6 stroke became the smaller ZZR400 57mm bore 38.5mm stroke which in turn became the ZRX400 with new side covers and finned cylinder block and side draft head, and sump castings for the oil cooler out put not drilled, America also got the ZZR500 using a combination of bore/stroke from the ZZR600/400 to give a capacity reduction to 500cc.

Most Kawasaki main dealers have a very clever computer program that allows you to type in a part number from one model and it will show which other models it fits, this is how I found the air filters for the ZRX400 and 1100 are the same part number as are the tail lights. With a little time and effort you can convert most Kawasaki engines using parts from the same family tree to build whatever you want.....

Gosling1 wrote:the ZX10-engined GPz9 would be an interesting bike !! wish I could understand Japanese though......and they had a lot of other unusual tackle in that site.

I did a bit of digging around in the parts boxes this evening, and also started removing crusty old gaskets from the sump and clutch cover. Looks like OEM gaskets from 1986 ! really old & shitty, all broken up and the bits that are left are like welded on to the covers ! some gasket-remover will see these peel off in a day or 2.

Looks like there is a spare set of carbies in amongst all the bits, these have been pulled apart at some time.

Over this weekend, I intend to give all the engine bits & pieces a thorough cleaning with degreaser, and try and get them in some sort of order. Everything is there, its just dirty and in 1 big box (now), instead of about 4 boxes ! The rolling chassis will get a good tub, and then it will be getting fully dismantled and prepped for blasting and powdercoating. It is 3 pieces, the frame, the bolt-on engine cradle and the bolt-on rear sub-frame.

I think a 530 conversion will also be mandatory ! god I hate 630 chains !!

Gosling1 wrote:...and prepped for blasting and powdercoating.

Phil wrote:.....Would a set of C model zx9 carbs be of any use I know where there may just be a set or two? BTW, that Kawasaki parts site is a find, I've sent the link to Tim, never know he may find the gudgeon pins to complete the "hot" GPx Mota....

Gosling1 wrote:....

Are the zx9 carbs CVKD Keihins ? If they are 38 or 40mm, then they could be of a lot of use mate ! The 9's used a downdraught carbs didn't they ?? If the bore centres are the same, they could bolt straight up.....

Gosling1 wrote: what's the go on Sunday ? I thought that was next week ? Is your 750 still regoed ?