cheese monkey

This is why I wanted to keep the airbox I hate messing around with carbs! On the other hand I quite enjoy the electrics, what’s up with it? Sounds like you are pretty close though if that’s all it needs

Thanks for your help and good luck with yours this weekend

No it’s oil cooled. The GSXR was water cooled then. Yes it would fit.

I have no idea if it’s long or short but I expect someone will. It’s a 99 750 Inazuma

I’ve got a GSX750 motor and carbs that need a new home.

No it went pretty much as expected. Not hard, but not easy. These things always take longer than you think and there are always little niggles to sort out on the way. Having the whole bike to nick bits off made life a lot easier. In summary for anyone thinking about doing one (its nice to have all the info in one place) Tank needs to go up on the rear mounts by 10mm. Bottom rear engine mount on the frame needs drilling out to 12mm. Use the 1200 engine, carbs, exhaust and clutch lever. GSX airbox can be expanded out (carefully) to take the 1200 airbox rubbers Main fuel line for 1200 carbs is 10mm, GSX is 8mm, so either clamp it real tight on the tap outlet, or put an adaptor in. Coils do fit on original mounts (apparently) 1200 oil cooler fits, but I couldnt quite get it lined up on both holes on the frame. I expect it would with a bit more wiggling, or I may just drill another hole for it. If using a Mk2 engine swap the neutral sensor, pickup/oil sensor and bin the PAIR system 750 CDI works fine

Quick blip round the estate and holy fuck I forgot how much torque this motor has

She literally fired up on the 1st attempt. Shit loads of smoke from the engine and exhaust paint but apart from that it runs pretty well. Occasional miss on idle but it’s an old girl, it certainly idles ALOT nicer than the 750 did. Shakedown run this evening. Fucking chuffed.

I'll definitely have another look at the coils. Not too worried as they aren't going anywhere for the time being! That looks really nice, clean and smart. Not at all like mine lol

Cheers. Maybe if the tank has to come off again I'll have another look at the coil mounting. For the time being they are between the frame rails under the tank. Broke one of the airbox covers when I was taking it off which was a shame. Was only going to paint it black anyway so no big loss. Post man didnt turn up today so still waiting on throttle tube and copper washer for sump plug, which means MOT will have to be postponed to next week. Rear brake was fine, but brake light switch was WAY out of adjustment, god knows how it passed MOTs last few years. Found the B12 fuel pipe was about 1cm too short and just too old, so put a new one on. Using the vacuum from no4 which is pretty tight too, another one to change next time the tanks off. Ran out of things to do so tidied the garage and started stripping the B12 for parts. Good luck on Sunday!

Good news, the airbox fits and even lines up with the original mounting points, with a little bit of muscling. Carbs are very easy to get in and out if you take the battery out so the airbox can move back 1.5cm. Choke was stiff and not returning because of poor cable run and the vacuum blanking bits fouling the choke slide on the carbs. Thats all sorted now. She turns over! No oil in it so only dabbed button to check the starter turns. Neutral switch swap worked too, forgot to check the oil sensor. Throttle tube broke because I'm an idiot and connected the cables the wrong way round. Bad news, coils dont quite fit, they sit on the oil pipes pretty hard, I'm worried if I left them there they would break from the vibrations. So will have to stuff them under the tank somehow. There really isnt much space under there. B12 oil cooler will only line up with alot of effort on one mounting. Rear brake has decided to seize. Sump plug is leaking. All should be fairly easy fixes... Might be running tomorrow if the bits arrive... MOT Thursday...

Engine is in! A few mates came over for the day and we got it done. Really not as bad as I remember. Expanded original airbox holes out to match the B12 rubbers and it all fits together. Absolute pig to get the carbs in though. Had some troubles with the throttle not returning and ended up breaking the crappy plastic throttle sleeve. So got a new one on order, I'm assuming a B6 one is the same or close enough? Will pull the carbs out and cables are connected properly, the pull cable felt like it was running really badly, which is almost certainly why the throttle wasnt returning properly. Choke also got really stiff after muscling the carbs in, so will give that a look over. Not exactly keen on the idea of pulling the carbs out again, but needs must. Still got lots to do on it, but no major hurdles now.

Rev limiter sorted

Just been painting this morning, frame was pretty rusty so it’s got the wire wheel and hammerite treatment. Engine needs a clean and paint next. Fazer fuel tap is only off/on I think? If it fits that’s great but I really quite like the back up of having a vacuum operated tap. Undecided on that one

38mm? I’m not up on the different carbs but I just measured my set here that are 38mm OD on the engine side and 50mm OD on the air side

Ok cool. Wonder what other fuel taps would fit? Ive ordered a 8/10mm reducer

Oo don't say things like that I'll end up thinking it will all just line up lol No matter what though the larger boots are going to have to go on so will definitely be some modifications

Had to cut the gsx exhaust off it was fused to the head. Just getting it stripped down ready to paint the rusty frame. GSX carbs are 50mm inlet and B12 60mm so standard air box isn't going to be straightforward. The carbs are the same depth, just not sure what the final height difference at the carb inlet will be due to the angle and taller B12 motor. What I expect I will try initially is blanking off the GSX air box, then cutting new larger holes slightly higher and fitting the B12 boots. Also the main fuel line ID is 8mm on the GSX and 10mm on the Bandit. I think I will get the 8mm on to the carb with some gentle persuasion Anyway, time to crack on and get throttle cables off

Ah I think in that case swapping the neutral switch over will be easier. And if I do that I may as well swap the pickup too B12 carbs. Got the Bandit airbox to try in there too. Just going to have to give it a go. I’ve got a complete bike to swap parts from so got the exhaust too luckily.

In regards to the electrical side I’m happy making up a new connector. Depends how easy are they to get at to swap over? I’ve got 2.5 days to do it all this weekend, got to be on the road on Monday morning... Slightly nervous.

I’m hoping to use the 750 airbox, or is there no chance of that? Don’t mind modifying it a bit! If it has to be pod filters I’ll have to shell out for dyno time

Feckin inlet rubbers. I had similar woes a few years ago, wound me up big time. Get the right ones for the head rather than attacking it with a dremel.

The removable frame piece on the B12 had completely rotted through. Snapped it in half with my hands.

Header bolts came straight out. Major relief. The 750 ones look properly ropey so I'm not so confident with them. May end up chopping the exhaust off and dealing with them later but will see how they go on the big day. The only unknown now is the airbox. I'm hoping I will be able to use the 750 airbox. I could put pods on but I'd rather not as it gets used year round and I dont want to cock up the fuelling too much

It was 10 years ago mate that I did the last one and there have been many many beers since then.... Chopping the frame is an option however I would rather not chop the GSX frame! Off they come then I guess. I'll start soaking in penetrating fluid in the morning.