If it's a 87 bike it will be a GPZ as they were made upto 1990 (I believe) when it was replaced by the ZX4.
GPZ400 crank cases will state ZX400 on them.
Most parts are same as the GPZ600R just some of the engine internals are different.
Carbs share the same spec as the C-type models of the 600 engine. I'll post them if you'd like.
I found it a struggle to find exact 400 details for valve clearances etc, but seemed to work fine with 600 spec gaps without rattles or performance loss.
Air box and filter are same as 600 model too.
I've still some FX400/GPZ400 parts if you are interested.
Wish you luck with your restro!
Posted Apr 9 2011, 07:48 PM in Tech Talk
Posted Oct 24 2010, 09:22 AM in Kawasaki Chat
My forks have seen better days. Last year I had to change the fork seals for the mot but when I ordered them they were the wrong size, when I ordered new ones by size rather than model I found that zx6 ones fitted. The seals that fit are oil-: 41-54-11, dust-: 41-54-6. The ones listed for my model were 52mm outside diameter, Could this just be that the ebay seller got his listings wrong?. I have been looking for replacement forks and there are some about,but surely if I buy a set that came off a 22 year old bike they're going to be the same sort of nick as mine.
So Im thinking maybe I could fit some newer forks,this is where I need a bit of help. Like I said I have been looking at forks and im wondering what about a set from a zx6-g?. I know that I would have to try and get a complete assembly ie; forks,yokes,brakes and front mudgaurd,is there any difference in the front wheel size between a 400 and 600, can I keep my front wheel?. does the head stock size vary between models? would the zx6-g steering spindal fit in the zx4-g frame?.
I have also been thinking about changing the rear wheel fron an 18" to a 17" so I can get a bigger choice of tyre,is this possible just by buying stock parts?
Obviously I would notify the insurance company about any changes but what about vosa,would I need to get the bike looked at buy them to agree the bike was fit for the road.
Any help would br greatfully received.
Posted Jun 10 2010, 12:12 AM in Kawasaki Ninja Sportbikes.
Posted Jun 16 2009, 07:03 PM in Tech Talk
So can anyone tell me what sort of money it is worth or if anyone wants to make me an offer on it. you can email me on email@example.com or contact me on here.
Posted Jun 14 2009, 09:43 AM in The Trading Post
Posted May 11 2009, 09:35 PM in Tech Talk
Japanese home market grey import model. Handles nicely & quick for a 400.
When I removed some loose wires on the side stand safety cut out, it would not start again but as I had a 750 I just parked this in the garage & left it about 8 years ago.
It has a new rear tyre & would be ideal for somone that has one of these & wanted it for spare parts.
E.mail me at firstname.lastname@example.org for photos,
or phone me at work 0113 272 0151
Ask for Don,
(Leeds area if you want to view it)
Offers around £100
still in my garage in march 2012,
wife wants shot of it
Posted Dec 25 2008, 02:33 PM in The Trading Post
And you can get them from just about any auto shop. But if your feeling lazy give these fellas a shout.
Posted Jan 3 2008, 06:34 PM in Tech Talk
Posted Nov 12 2007, 09:06 PM in Tech Talk
- Mar 17 2007, 03:51 PMI've got a zx4 that i'm currently getting up together problem is i've never worked with this type of carb before ie: The throttle cable i'm used to pulled the sliders up and down. But these open the valves below the sliders and seem to have a vacuum chamber that the sliders move up and down on. I seem to be getting fuel into carb bowls but it doesn't seem to get to the pot as plugs are still bone dry. Any advice or a website with details on this would be gratefully appreciated.
Correct, the sliders move by vacuum. You can make sure you have fuel by loosening the 4 crews that are the drains on the bottoms of the carbs. Mine use a torx bit. Make sure there is a vacuum line to fuel petcock, it will not flow fuel without vacuum. Also make sure you do not have disconnected vacuum lines at the intake boots, or other sources of vacuum leaks.
When I got my bike someone had removed all the emissions stuff and threw it out. It would barely start and would not run without the choke. I noticed the slides were not moving and found he had plugged both the vent lines on the carbs. So make sure no one has hacked up all your lines and plugged or unplugged something that should or shouldnt be!
Posted May 24 2007, 10:01 AM in Kawasaki Ninja Sportbikes.
Posted Mar 17 2007, 02:51 PM in Kawasaki Ninja Sportbikes.
Does anyone know here
Posted Mar 6 2007, 10:13 PM in Tech Talk
Posted Mar 6 2007, 09:53 PM in Tech Talk