85 GS700 to 96 GSXR750 swap questions

[salty_monk]

I had a flat mount machined out of 10mm stock and used washers to space it on the wheel axle.

I used a stock gs1000/1100/850 caliper (stock 750 one is a side exit banjo, the one i used was rear exit) and relieved the casting on the back of the casting where the inside piston goes.

This is because I used the small gsxr rotor but there is a bigger one you could use where relieving caliper casting would not be necessary I think.

I had a stay made but you could easily Adapt one as Dee did.

I have CAD drawings for the caliper mount and stay if you want to go this route.

 

[salty_monk]

 

[5t341th]

Thanks for all the help guys. I know you guys are repeating yourselves over the years so I really appreciate it

I ended up buying a gsx600f rear caliper and mount because it looks like it hangs upwards in the stock fashion. I also ended up buying a 1990 gs500 carrier to try out. I don't have custom fab skills or equipment for bigger jobs. I just have a welder

 

[5t341th]

thanks for the clarification on which year GS500 carrier to use.
i received mine today and its about 1/2" thinner overall. i test fitted the wheel again today and it fits better; maybe too well. now there's a gap on the brake side of the wheel. i guess i can always use washers as spacers to make this center out.
BTW, it seems i wont need a offset front sprocket? it looks like it lines up perfectly with my front right now

heres a pic to show my progress!

 

[salty_monk]

Be very surprised if you can get a chain to clear without some offset at the front. (I.e. I don't think it lines up... Probably a trick of the eye). If you mount a 130 in stock wheel there just isn't 15-20mm of clearance between the tyre and chain which is what you'd need to clear a 160 (30mm /2 =15mm plus 5mm for clearance)

I ran a 6mm spacer from Z1 enterprises behind a 520 "conversion" sprocket (has a 2mm lump on one side) which I ran to the inside giving 8mm offset overall.

That provided about 4-5mm of clearance to the 170 if I remember correctly.

If you do what I did you have to grind down the back of the stock nut and use loctite (i used the red stuff) as you can no longer use a lock washer. (you can decide if this is a safe method or not).

 

[5t341th]

hey salty monk, i checked out my sprockets and they do seem to line up. I even used a laser to check. Could it be that my wheel is not 100% centered in the swingarm then?
if anything, it looks like the rear sprocket needs to be spaced out a little further.

between the chain and tire has about 1-2mm of clearance. Should be sufficient?

also what # of links are the chains you guys are using?
I tried using the stock 114 link 530 chain and its one link short. I was on 14/47 but it wasnt long enough, so i swapped the front with the extra 13T i had and it was just enough.
The wheel is all the way forward. does this look like enough chain play? This chain is pretty much new too.
heres a video of the chain play. this is on the sidestand. if i do need a new one, how much longer should i order it? +1 link or more?






I also drove up and down the street and I love it!


EDIT: also, my GSXR rear rotor is way too small for this GSX caliper. Only half the pads are squeezing the rotor. Do you guys know if the gsx600 rear rotors are all the same size(diameter-wise)?

 

[5t341th]

I totally forgot to update this thread.
I'd like to thank all of you for helping me with this conversion. I really appreciate you guys for showing me what you did on your bikes.

heres a few pics of my bike as of now.

i have a few questions though.
Billy ricks, with your gsxr rearsets, do you have a problem with the kickstand getting in the way when you shift? When my kickstand is up, it interferes with my shifting because it's in the way of my foot.

also, i installed dynojet stage3 along with a supertrapp and kn pods.
I'm not sure what a perfect rev drop should be, so heres a video. does my revs hang up there too long?

 

[Guest]

Sheeesh, couldn't ya get the chain any closer to the tire?? lol, Looks pretty nice!

 

[Guest]

I went with a sidestand from a Kawasaki Z1R because i had the same problem. It took a bit of work with a grinder to make it f

it....