FAQs - 86 GSXR Trading Club

The answers on this site are suggestions only.
I make no promises about the effectiveness of any of the advice given here.
Want to Post an answer? Use the form below to send comments. - Rose

Will a 93 gsxr 1100 engine fit a 95 gsxr 750? Thanks for your time.

You're welcome, but that's off topic for this site. Try gixxer.com

My new 1986 GSXR 1100 has mikuni flatslide carbs, I think, no airbox or filters. I'm having a hard time finding filters that fit. the outboard carbs either hit the frame or the filters hit each other at the sides, the intake throats are very close together. The intake O.D. are 58mm or approx 2.2 inches. any ideas. Thanks

I was just told by Don of Scuderia West that stock jets do not need much dialing in, so the best option with filter and/or exhaust issues is to go back to all stock. See if you can find the carb boots and a stock airbox. I found a schematic on BikeBandit: http://www.bikebandit.com/houseofmotorcycles/suzuki-motorcycle-gsxr750g-1986-air-cleaner/o/m6223sch245251
I know it's a hassle to get the boots attached because there's almost no clearance between the carbs and the airbox, but I have done it, it just takes a lot of jiggling them in there and patience. Think like Zen and the Art of Motorcycle Maintenance.

have just got 87 gsxr750 and some one as started to streetfighter it have a problem with the flatside carbs no air filters if i cover the air filter inlet up with a rag it starts and revs like mad when i move the rag she cuts out been told k&n filters which i got and then jetting but wot size jets and which ones can some one help thanks lee

I personally hate those single K&N filters, but that's my opinion. If I had your bike, I'd look for a stock airbox. I'd love for someone to give me a good reason to use those things.
These bikes are no longer competitive as race bikes, they are most valuable to us for the artistry of their engineering and design, and massively fun to ride!
Also, it's hella hassle to remove the carbs. If you have to do it, take a deep breath and rock them out sideways a millimeter at a time.- Rose
best bet is to fit a dynajet kit which comes with the right size jets and needles and springs for the sliders.you can choose from 2 kinds, one to be used with stock exhaust and air filter and another for use with racing exhaust and k&n filters. regards, michelle
Other opinions/advice? Send them to me via the form.

I just bought a 86 GSXR 750 it has the 4 k&N puck filters owner said it was jetted and has a yosh racing pipe. It runs okay in high rmps but slow traffic or at lights it bougs out and have to ride the clutch just to leave lights and if I ride at same speeds it starts to die out feels like plugs are getting wet but looks good when I take them off. if I ride a bit and stop it runs rough till I rev it up. not smooth power on power of nothing i n between. hard to ride. any one know what the jetting size are for 86 gsxr or what can I do to make it smooth with the yosh pipe and the filters. I tried many times playing with the needle height nothing works right it at very top. it the best so far but not right. hard to turn smooth power is choopy on of. also slight back fire keeping revs at 3 4000 rpms when powers on it moves need help - Arda

I have a similar set up and a similar problem. Mine doesn't sound as bad as yours though. Not sure what size jets go with the Yoshimura pipe, but if you still have stock jets, you're better off trying to find a stock pipe. - Rose

What engines will fit my 97gsx750 katana frame? Any help is greatly appreciated, Jerry

i want to remove the back end and put a better one on so its all open can anyone tell me whitch one would be the best it has to cary two people without too much chopping - john

hi,i have a 86 gsxr1100 and i have a 91 gsxr750 cdi is it posible to fit the 1100. thanks, regards, michelle

I've got a 86' GSXR 750. I dont have the fairings on it and after running in a hard rain it acted like the rev limiter was kicking in at 4Krpm. The limit crept up a little at a time over a few days of dry weather till it cleared up. I believe I want to replace the coils. Can I get a recommendation on the right coils to get? Is there any chance this is a malfunction in the rev limiter? Where is the rev limiter? - Adam

this model rev limiter is the cdi, so can't be touched. the misfirring is probably becouse the rubbers of the spark plug cap are broken and your geting water in the plugs well. Regards, Michelle

i've got a 1986 gsxr1100g. I don't know if its a u.k model, are non uk models restricted in any way? and what way? also what's the best carb for it 36mm/38mm what model is it straight swap? thanks, leon

36MM CARBS WORK GREAT WITH STOCK HEADS AND STAGE 3 JET KIT. IF YOU FLOW THE HEADS 38 WILL WORK, BUT YOU WILL HAVE TO PUT ON BIGGER IN TAKE BOOTS.THE 36MM WORK GOOD WITH THE STOCK BOOTS - Unsigned

What is a cherry 1986 GSXR LTD worth these days? 950 miles, and looks like it. All stock including the pipe and tires. - Mark

Garaged for the last 22 years or restored?
- Perfect, original, unrestored, 950 miles. Not even any corrosion. Like outta the crate. - Mark
Well, ok then, what do YOU think (you 86 gsxr website readers)? Send responses with the form.

Will the CDI (part number) 32900-31310 or 131100-3581 work on my GSXR750 86 motor? - Aidan

That is an excellent question (that I just sort of understand ;-)) Gearheads, help! Send responses with the form.

i have a 85 gsxr &want to make it into a street fighter,any ideas or suggestions on what can be done to expose the rear more,i don't like the rear panels&also any info on how to change to a set of straight bars so its more comfortable to ride for more than couple of hours. - Ron Keats

please could anyone help me as regarding japanese frame numbers for slabsides i have 3 bikes beginning with gr71f 1067xx,1017xx,1066xx they are on uk plates but am not sure what year they are uk bikes are easy to check but i have had no luck with japanese imports thanks - Harry

hi i have a 86 gsxr 750 i would like to know how hard is it to fit a 87 gsxr 1100 motor thanks heaps guys Aaron smith

I have just completed installing an 88 1100 motor in my 750. It is a direct bolt in. The trouble comes from the electronics. You can use the 750 CDI but the redline is 13000 rpm the 1100 motor is 11000 rpm. You have to be careful. I installed an 1100 CDI but you have to have some knowledge of electrical wiring and schematic reading. Over all it is fairly simple if you have patience. - Corey

Can you tell me if a 86 gsxr 1100 swingarm will fit my 86 gsxr 750? thanks mike

My 86 gsxr 750 has seemed to have lost spark only on #2 cylinder. I have replaced plug, boot, and cleaned connections. Someone said that not only one side of the coil would not blow. True? Does anyone have any further ideas of what could be keeping me from riding?

I'm interested to know about interchanging the 1989 GSX 750 Katana motor into the 1987 GSXR 750 frame. Do carbs, electric..etc interchange? I run 86/87 GSXR 750's and have a spare Katana motor, never tried bolting it in to the GSXR. Any GSXR guru out there have a comment? - Greg (847)445 9616

Good questions. Gearheads, help! Send comments using the form below.

Will a 92 katana 750 cdi box work with a 86 gixxer 750? - chuck

Doubt it, but maybe someone will know for sure. Gearheads, send comments for posting using the form below.- Rose

Can any one please tell me what 3 spoke wheels will fit my 86 slabside gsxr 750 with out 2 many mods to the bike? - John

I’m pulling this off the top of my head but… 88 - 93 750 are the easiest. The rear is a bolt on with your stock caliper, hanger and spacers. The front is a little trickier, you need a spacer made to run through the bearings and center wheel spacer so it will fit your axle and you need 88 - 93 rotors and 86-88 1100 calipers. Then you need to have some fender spacers made to lower the front fender. I think that’s about it. - Mark

I have owned my 85 GSXR 750 for 18 yrs now. It is stock standard with 64000 k's on the clock. Just installed new front tyre and notice it is weaving at over 160 kph. The bike has never done this before. I don't think it's the tyres fault. Short of putting new suspension all round, what can be done? I feel stiffening the suspension up may help. Rear shock is straight forward but how are the forks tensioned or stiffened up on this model? - Shane

In response to Shane's 85 GSXR weaving problem, I have a little info that might help.

I've had my 85 GSXR 750 since January 1986 and have had numerous instances of high speed wobbles all the way to violent tank slappers somehow managing to keep the bike upright.

Tightening the suspension will more than likely increase the problem because stiffening the bike amplifies the vibrations.

The reason 85's wobble or twitch is because the swing arm is shorter that year than 86/87. This makes the bike very short and nimble but a bit nervous and twitchy. Suzuki recognized the problem and fixed it for 1986. I plan to swap my swing arm for an 86/87 to improve mine but if that isn't possible make absolutely certain that your rims are true, the wheels are both balanced and matched, and make sure that your fork seals are good. I had a slight leaking tube on one side and it unbalanced the suspension just enough to weave at high speeds. Oh, and don't tighten the suspension too much.

* I like Metzlers... They seem to work well. I managed a very violent wobble popping the wheel ever so slightly off the ground between 1st & 2nd hard on the throttle one day but that was the only time.

Cheers,
Andrew

my 86' gsxr 750r at high speed the bike starts to wobble, but now im getting vibrations in the seat and foot pegs although its not in any way limiting the bikes power, it just feels dangerous is it my shocks maybe what do you think and any solution(apart from slowing down) Thanks, Matt

As always, your comments are welcome here. Use the form below

I have an 86 slingshot 750 and it has k&n filters and yoshimura pipe. Bike seems to cut out at high rpm. Any ideas? Just doesn't seem to run right. - Scott

Mine has done something similar ever since getting the after market jets and pipe too. I was told to get the carbs dyno tuned. Not everyone does that for old bikes anymore. Let us know if you find a good tuner. - Rose

HEY GUYS OK I HAD MY CARBS CLEANED, SYNCED, NEW PLUGS AND NEW AIR FILTER. FIRST CRANK MY BIKE IT RUNS FINE UNTIL ABOUT 45 MINS WORTH OF RIDING. THEN THE BIKE STARTS DOING A LOT OF POPPING WHEN I GIVE IT THROTTLE AND ALSO RUNS ROUGH AT LOW SPEED AND WANT IDLE. SINCE THE CLEANING AND OTHER FEW THING I CAN TELL A DIFFERENCE .IT IS MORE RESPONSIVE. CAN YOU TELL WHAT IS WRONG OR POINT ME IN THE RIGHT DIRECTION. THANKS.- Dee

In response to Dee's question:
Sounds like the ignition coils are overheating. Replace them with a good aftermarket set. The originals are junk even when new. - Rod
i had dyna coil and new lead in my 3 gixers and it the best i had REGARD MICHELLE

The Standard '86 rear shock is a bit basic. Are the any Shocks from other Make/ Models that will bolt right in?- Cadium

Agreed, the stock shock is subpar. Mine has an aftermarket Fox shock. Anyone know about fitting other models?- Rose
I've fitted an Ohlins rear shock and that made an enormous improvement. Next will be cartridges for the front forks. Ohlins as well. That should complete the suspension upgrades as soon as I set them up.... - Tony Gilligan

hi can you tell me the colours of the 87 h model the blue ones.or better still the codes..thanks regards- Al

I googled and found this website of Suzuki model codes http://www.motolit.com/suzukiserial.html.- Rose

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