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How I put GSX750F "Katana" Running Gear in my 78 GS750 (Australia)
Hi Everyone,
This will be brief but to the point because I get frustrated with people saying stuff can be done, then not listing how ;-) This will give you large fully floating discs, twin pot calipers, 41mm forks, radial tyres, and all round improvements to the bike imho.
Rear Wheel
Reverse the Sprocket to gain 2mm inward offset
Machine 9.71 mm off the carrier to get some extra inward offset ( I needed 11.71mm on my bike) careful as this will just start to machine through the face, so you cannot take any more (it's the reason I reversed the sprocket)
take the GSX750F Brake hanger, carrier crush spacer and wheel inner crush spacer (this spacer is 88mm long btw) and open them to 20mm I/D
Fit two 6204-2RS bearings to the rear wheel
Use the TWO GS750 outer spacers, Axle, and adjusters as they are already 20mm I/D
Fabricate two more spacers LH is 4.75mm, RH is 5mm
Re-fabricate torque arm out of 10mm steel to clear the tyre, following the same profile curve as the original, and extend it 1.5" to clear the rear shock
All of this cost me about $120, and it aligns the wheel in my bike with a stock swing arm and plenty of chain clearance even with 630 chain. The entire GSX750F cost me $500.
Front End
Remove lower steering stop from headstock
Replace lower yoke bearing with 1976 Kawasaki 750 Triple (30/47/13)
Original top bearing is perfect as is.
That's it, everything bolts up! The frame has just enough space for a couple of bolts to be added as steering stops and they will work with the GSX750F lower yoke stops but I havn't done this yet.
The "Katana" top yoke is ugly as sin but we can use it if we are creative. It has 4 rubber mount points for the top plate, these can be reused and "hide" the ugliness by using the rear pair of holes for DR650 Risers, and the front pair for Clocks. Do this and you have rubber mount bars and instruments :-)
GS750 side.jpg
I hope you guys like the tip, the GSX750F is an ugly but underrated bike so they can be found cheap as chips!
This will be brief but to the point because I get frustrated with people saying stuff can be done, then not listing how ;-) This will give you large fully floating discs, twin pot calipers, 41mm forks, radial tyres, and all round improvements to the bike imho.
Rear Wheel
Reverse the Sprocket to gain 2mm inward offset
Machine 9.71 mm off the carrier to get some extra inward offset ( I needed 11.71mm on my bike) careful as this will just start to machine through the face, so you cannot take any more (it's the reason I reversed the sprocket)
take the GSX750F Brake hanger, carrier crush spacer and wheel inner crush spacer (this spacer is 88mm long btw) and open them to 20mm I/D
Fit two 6204-2RS bearings to the rear wheel
Use the TWO GS750 outer spacers, Axle, and adjusters as they are already 20mm I/D
Fabricate two more spacers LH is 4.75mm, RH is 5mm
Re-fabricate torque arm out of 10mm steel to clear the tyre, following the same profile curve as the original, and extend it 1.5" to clear the rear shock
All of this cost me about $120, and it aligns the wheel in my bike with a stock swing arm and plenty of chain clearance even with 630 chain. The entire GSX750F cost me $500.
Front End
Remove lower steering stop from headstock
Replace lower yoke bearing with 1976 Kawasaki 750 Triple (30/47/13)
Original top bearing is perfect as is.
That's it, everything bolts up! The frame has just enough space for a couple of bolts to be added as steering stops and they will work with the GSX750F lower yoke stops but I havn't done this yet.
The "Katana" top yoke is ugly as sin but we can use it if we are creative. It has 4 rubber mount points for the top plate, these can be reused and "hide" the ugliness by using the rear pair of holes for DR650 Risers, and the front pair for Clocks. Do this and you have rubber mount bars and instruments :-)
GS750 side.jpg
I hope you guys like the tip, the GSX750F is an ugly but underrated bike so they can be found cheap as chips!
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