One of the most important things with this build ,for me, is to get the lines right. Ive seen many projects on this site and others,where a lot of work and money has been put into something and when it gets to the final stages and you see the bike altogether, something just dosnt look right, A lot of it is down to personal taste and I never liked the stretched look or the kicked up backend. I remember back in the 80's a lot of 'Streetfighters' had the arse kicked up so high,you could bang the back of your head on them. God knows how they handled.
Anyway,I want to get the proportions right on this thing from the start.
'Mock up' time.




I dont have the room in my workplace to be able to stand back and look at everything, Plus I need the workplace for 'work', so Ive built a table to put the bike on that I can roll out into the corridor.

Now I can get a better view of things.

ZX9r front end, GS1100 swingarm and Im still waiting for a GSXR750/1100 back wheel.Ive got the original CSR wheel in it for now and jacked up to the right height as the GSXR ( more or less).
So far,so good.
Once I get the back wheel on it, Ill get a better idea of things. Exhaust clearence was a big worry with dropping the front end from the CSR's 85cm (33,46 inch) to the ZX9r's 77cm (30.14 inch) but it looks like it might be ok.
Im also not sure about the rear of the subframe.As it sits,the 'Ducktail' I had in mind wont work. It sits too high and the line is wrong, So,either I cut the subframe down and put a loop in it , or I forget about the ;Ducktail' and go with something else. Not sure what to do yet.
Anyway, back wheel first,then well see whats what.

Also picked up a 2004 gsxr 600 swing arm, most likely will be mounting it upside dwn and using the stock kz suspension. Any thoughts on mounting it upside dwn?

Heres how it stands at the moment. Original forks ,swingarm and wheels.


Anyone whos looked into a swingarm swap on this website will recognize the GS1100 Swingarm.
[attachment:2]DSC04444.JPG[/attachment

Though from what Ive read, Fitting in the frame is a simple matter of spacing with a couple of washers. Its going to take a bit more than a couple of washers to fill this. The CSR frame must be wider at the pivot bolt than the other
900/1000 frames. Be aware.



Also The GS1100 should be 1 1/2 to 2 inches (3.5 to 5.0cm) longer than the standard swingarm. Not so with the CSR. Im measuring original swingarm at 46cm (18.1 inch)

and the GS1100 swingarmat 47cm (18.5)


Which is good news as it'll mean I wont lose any height at the back end.Though I will still need to change the shocks as the mounts are different.

PLUMMEN wrote: Before you get all wound up spending money where you don't need it heres a couple of ideas for ya.
Have the crankshaft checked to make sure its straight and rods don't have an extra side play,then have the pins tig welded.Its doesn't need to be done by a fancy shop like falicon.
Have the trans checked for worn dogs or shift forks,no need to get too fancy.
Theres lots of guys drag racing old kz's with mountains of hp with stock transmisions.
Id suggest spending money on a new cam chain and parts associated with it,these are high where items that will beat your budget up pretty fast but will give you more bang for your buck than a fancy crank and trans.
1075 kit will definitely put some spunk in the motor,a good stage 1/street porting job from larry will work good with that.
Id stick with something more in the .365-.375 range with the cams myself
Id also find a set of the old 28mm pumper carbs off a 79-80 1000 to save some money.
Now is the part that is really going to blow the budget,but I consider it more important than a hot rod motor for a streetbike.
The single disc on front and drum brake on rear was under powered to stop that bike in stock form,let alone a warmed over 1075.
I suggest if nothing else atleast put dual discs on the front(rebuild forks also)
If you have money in the budget Id suggest getting a hold of kz1006,hes a member on here.And see if he has a rear wheel/brake/swingarm and associated parts from a 77-78 kz1000 laying around.
That way you have disc brakes front/rear,tell him you need a brake pedal/master cylinder also.
A decent pair of rear shocks is also a badly needed improvement,along with good tires.

Thanks for such in depth advice!

I have decided not to go to crazy with the motor. Pretty much the plan with it now is to go 1075, get the crank welded, have everything checked as you said, and replace all those annoyingly pricey parts.

As for the head, Ive decided to just do basic refreshing on it without going crazy. So basically just refurbished stock cams and setup.

I was definitely planning on getting at the very least the dual discs on the front. I didnt know I could do the rear with the 1000 setup, so I am sure I will end up doing that. It may be after most of it is done though.

Im really hoping I can manage upgrading the small things, like brake lines, headlight, ignition, etc. I did buy a dyna already, so that was exciting.

Im pretty much wanting to upgrade what I can without going too far from a stock look. One thing I was considering was an oil cooler. Not sure though.


Got in contact with a powdercoater, should be getting a quote on Monday!

Before you get all wound up spending money where you don't need it heres a couple of ideas for ya.
Have the crankshaft checked to make sure its straight and rods don't have an extra side play,then have the pins tig welded.Its doesn't need to be done by a fancy shop like falicon.
Have the trans checked for worn dogs or shift forks,no need to get too fancy.
Theres lots of guys drag racing old kz's with mountains of hp with stock transmisions.
Id suggest spending money on a new cam chain and parts associated with it,these are high where items that will beat your budget up pretty fast but will give you more bang for your buck than a fancy crank and trans.
1075 kit will definitely put some spunk in the motor,a good stage 1/street porting job from larry will work good with that.
Id stick with something more in the .365-.375 range with the cams myself
Id also find a set of the old 28mm pumper carbs off a 79-80 1000 to save some money.
Now is the part that is really going to blow the budget,but I consider it more important than a hot rod motor for a streetbike.
The single disc on front and drum brake on rear was under powered to stop that bike in stock form,let alone a warmed over 1075.
I suggest if nothing else atleast put dual discs on the front(rebuild forks also)
If you have money in the budget Id suggest getting a hold of kz1006,hes a member on here.And see if he has a rear wheel/brake/swingarm and associated parts from a 77-78 kz1000 laying around.
That way you have disc brakes front/rear,tell him you need a brake pedal/master cylinder also.
A decent pair of rear shocks is also a badly needed improvement,along with good tires.

RobK wrote: Yeah, I can't see an improvement in shifting the swing arm back. Longer wheelbase, true, but you're changing the dynamics of the bike by shifting the fulcrum. Would think it would actually make the machine less responsive, but if someone knows better, I stand ready to be corrected.

Id be really worried about the rigidity of those brackets from side to side,in the stock location theres a lot of tubes tied together at that point not to mention the engine cases tying things together.

Hello Yall,
I have a 77' Kz 1000 - (with mags) using the original swing arm.. could someone tell me what the largest REAR tire I can use..
Thanks

I don’t think so. It looks bright and shiny and the bolt comes out easy so it must be straight too.

Hey, is your sleeve knackered?? Mine is shot and I am trying to find a new/lightly used one.

So,the engine is sorted,for now, and its time to figure out the rest of it. The frame is stripped,delugged.The wheels and swingarm are bearingless and its all ready for the powdercoaters.
But,
One of the reasons for this build was to make something a bit different. I dont like the cruiser style of the CSR but I didnt want to go for a full on front end/ back end conversion.
Something in the middle.
Then again, a lot of the bikes Ive seen on this site have been pretty amazing.
But theres the cost to think about and a lot of possible engineering headaches.
But if I stick to standard,I end up with pretty much the same bike (a cruiser) with different paint.
(same soup,just reheated!)
Though I need to consider the safety side of things. Messing around with different sizes of forks/swingarms/wheels is going to really alter the geometry of the bike .Hows it going to handle??
Well,Ive been pulling my hair out about which way to go.Ive done a lot of research on the interweb,I know a lot more than I did this time last month.
So, I made up my mind.
Then I changed it.
A few times.
Then I ordered some parts.