Dirtbag Oil-Boiler

crazypj

Split personality, I fake being smart
canyoncarver said:
That's a better setup than the earlier screw adjuster type. Those shims will be easy to measure and swap. Cool!
Rumor has it that Suzuki redesigned top end on Pop's Yoshimura's request. You get an extra 500~1000 rpm with the lighter rocker and shim arrangement Had a major issue when valve lift got toò high, rocker arm hit edge of ship and spat it out. Only the 600 and 750 ever had -shims, I havent tried retro fitting to 11/1200 head but I have some parts to try. You could fit 11/1200 top end to 750 but transmission would be weak point (1100 breaks stock 5 speed, don't think 6 would last long with extra power and torque?)
1200 Bandit should have 43mm forks? I sold the set I had, they are now on a GS1100 (posted pic somewhere?) Oh, I'm pretty sure I have some 0.5mm OS pistons for 750 motor. Can't remember where I stashed them at present though? (was going to rebuild a 600 motor I have with a 750 top end on it)
 

doc_rot

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If i'm going to rebuild a motor for this bike its gonna be the 1100, or possibly a bandit 1200 motor.
 

doc_rot

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front end sorted out. Took a bit more machining than I hoped for but it all came together. I used the bandit wheels, ebc rotors and original calipers. The rotors needed a bigger PCD, and the ID opened up to fit the bandit wheels. The calipers needed a small washer to center them on the disk, and since I was missing a wheel spacer, I decided to make them all from scratch and delete the speedo drive while I was at it.
 

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adventurco

Nick Ol' Eye
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Not sure how I missed this. Following along. One of these came up for sale locally not too long ago and I have to say I was very tempted.
 

doc_rot

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the frame has been boxed in and braced. The broken motor mount is repaired. This frame is a proprietary alloy that is basically 7005. I used 6061 for the braces and 5556 filler rod. The castings were difficult to weld, twice I had something in the casting explode and pop molten aluminum out at me. I want to brace the swingarm as well, but I'm going to wait till its on the road so I can do a comparison. I painted the triple trees with gun kote and installed new bearings. I went through all the bearings in the rear end and cleaned them out and packed with new grease. Its rolling again, sitting on Metzler Sportec M3, which i spooned on sweating it out on the garage floor(I'm a Luddite when it comes to tire machines). Never ridden a metzler tire before, excited to try them out. I'm still on the hunt for an engine.
 

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pidjones

Over 1,000 Posts
I know nothing about aluminum welding (very little about steel welding). But, as a GoldWing rider, welding extrusions to castings all with different alloys is a bit scary. It took Honda until 2005 (building 2006 models) to finally get theirs right.
 

doc_rot

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thanks guys. I'm excited for this project to come together.
 

crazypj

Split personality, I fake being smart
I forgot to answer your question about swing arm being bent if sprocket carrier bearing spacer is left out. Not only likely but common. On later GSXR the welds can/will crack, particularly 2008~2010 which had pretty poor welds . Early models were welded up properly so you can heat swing arm and push it back into shape (only heat bent side near pivot end and use scissor jack with wood block) I had to do one or two at dealer after people got cheap tyre change and spacer 'went missing'. Usually the sprocket carrier bearing was shot as well with wheel 'floating'
 

doc_rot

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The old steer stops were broken off so I turned some bushings and bolted them to the lower triple. i also started on a fork brace/fender mount for the late model fender. Not sure how I will mount the fender and whittle the brace down yet.
 

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doc_rot

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I found a Bandit 1200 to use as a donor. I probably paid a little too much for it considering what a turd this thing was; no title, booger welds galore, loads of hacked parts. I was hoping to part out what I didn't need and recoup some cost but aside from what I need there isn't anything else really to sell off. The engine fired up and sounded OK. needs a clutch bad. It was pretty greasy so i hosed it down with Gunk it and cleaned it up a bit. The 1200 engine slid right into the 750 frame after I took the valve cover and a cam cap, There is loads of room to remove the valve cover to check clearances. I need to sort out the motor mounts, I'm wondering if i should oversize the mounting bolts to remove the slop.
 

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Streetfighterkz

Been Around the Block
The Bandit is, umm, interesting. I had a B6 with a B12 engine shoe-horned in it about 7-8 years ago. Fun bike power-wise but someone along the line put a VFR SSSA on it and messed up the rear geometry some. Never did sort the right shock for it before I sold it.

Anyways, I’ve heard that the Bandits and Gsxr’s use either 10mm or 12mm hardware for the same engine mount depending on model and year. I’d go with bigger bolts to take up the slop.

Later, Doug
 

doc_rot

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the bottom rear motor mount is 12mm on the B12 instead of 10 on the GSXR 750. I'm thinking about changing all the bolts up to the next imperial size to remove the factory slop, so 1/2" where 12mm is used. 7/16" where 10mm is used and 3/8" where 8mm is used. It should help tie the engine and frame together better, but i dont know if its worth the hassle. This engine appears to be stock so, all i'm going to do is get an ignition advance, jet kit, and build free flowing pipe and this engine should be making around 120hp.
 

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