[Joe Curly]

im driving an 89 gixxer 750, i love it. I have heared that it harder to get the older bikes to raise the front wheel but possible if you wanna pop the clutch, i cant even get ththing to lift. i was talking with a buddy of mine and he said it prob is the rear suspension is gone, it also shakes a lil when im taking the twisties at high speed, if anyone has any ideas that would be great.

-Joe

 

[sime]

I have heared that it harder to get the older bikes to raise the front wheel but possible if you wanna pop the clutch, i cant even get ththing to lift

this bike is from 89. 1989. that is not old. old is having girder front forks or cross-ply tyres.

get a bit of momentum happning, roll off the throttle slightly slide your arse further back and try yanking on the bars while opening the throttle right on the clutch take up...

could the shakes be a crashed gixxer???

 

[87gsxrnut]

Another example of a rider not having a clue as to the history of his motorcycle.

1. You are going to tear the hell out of your clutch, 1st driven gear and gear forks by dumping the clutch to do a wheelie.

2. If you would take the time to LEARN THE HISTORY about your bike, you would realize that the old O/C 750 motors make very little torque or power below 8K. They are like a GP bike. Very thin powerband. Between 8 and 11K is where all of your power is. Even with a pipe, carb tuning, cam timing etc, your midrange is still going to be average at best. Low end power will be even worse. Busting off wheelies on one of those takes some skill to pull it off right, or you will flip the bike over.

3. Your shakes could be due to a variety of problems. Old wheel bearings, fork stiction, worn out fork oil/bushings, worn out shock, worn out tires, bad chain/sprockets, unbalanced tires, loose/worn steering head bearings, bad swingarm bearings yada, yada, yada. I would sort that out before worrying about doing a wheelie on that bike. The shock usually is a contributor, but it sounds to me like you should pull the whole bike down and give it a good once over. Getting an old bike up to spec is not cheap, and is very time consuming. Take it from someone who has six of them.

Wanna get that GSX-R rolling?

The book below was published in 1988. Meaning, that all of the work was done in 1987 for the sections. The primary focus of this book is racing, and at that time, the GSX-R dominated everywhere. 60% or more of the book covers mods, etc. to the 1st Gen. GSX-R's. AWESOME STUFF. This book is a MUST HAVE, especially if you want to race one.

ISBN: 0-87938-301-1
Publisher: Motorbooks International

I bought this one in '90 or so. Amazon sells them.

Amazon also sells this:

http://www.amazon.com/exec/obidos/t...f=sr_1_5/002-3613330-7416854?v=glance&s=books

AWESOME for GSX-R history. Read it.

- Nut

 

[Joe Curly]

ya the bike was dropped thats why i got it all nice and fixed up, so i guess theyre not supposed to be shaking rounding corners at 180km/h.....cuz i always thought that sport bikes would hug the road better than that.. well i guess when i buy new next year it will be all the difference in the world

 

[87gsxrnut]

Yeah. Old bikes sometimes can cost MORE than a new bike to get them up to speed. People think I am crazy racing these old GSX-Rs.

I have 14K into the '86 1100.

:shock:

I am SILLY!

- Nut

 

[Joe Curly]

the thing is i dont have the money to get the new fancy bikes. I bought cheep and put as much money as i could into her. I dont have the money to fix it up from head to toe but simple fixes are feasable!

I also have another question....it will cut out on me at 220, when it says on the factory specs that it should reach 250 ish, i got a stage 1 jet kit put into it and a new k&n air filter but wont top 220. I have also found that it is really bad with fuel consumption....im only getting 175 km tot he tank...i always thought that bike were supposed to be better on gas than cars.........if anyone has any info on any of these things do share
thanks again everyone, hope to hear from you soon

-Joe

 

[87gsxrnut]

I dont have the money to fix it up from head to toe but simple fixes are feasable!

Most of what I mentioned can be done with some wheel grease and some time. As long as your bearings are OK that is.

Again, there could be several reasons for the bike not pulling higher KPH.

1. Does the bike have stock gearing? That will affect your top end bigtime.

2. Air/Fuel mixture on full throttle (main jet) could be too lean or too rich. Put the bike on the dyno to set it up.

3. One or both of the coils might not be putting out enough spark (weak coils). That was a real PITA with the old GSX-Rs. Still see it a lot today on the old ones.

FYI: Factory specs and measurements are usually done with a new bike and 150 LB rider (on average) at the race track. Don't buy totally into them, as they are not indicative of the real world. Your bike has a lot of miles on it. Performance is most likely down a bit from when it was new.

- Nut

 

[cerastes]

i was talking with a buddy of mine and he said it prob is the rear suspension is gone, it also shakes a lil when im taking the twisties at high speed,

i got a stage 1 jet kit put into it and a new k&n air filter but wont top 220.

Hold on, your bike shakes while turning at speed, so you think you might have dodgy suspension. Wouldn't it be sensible to check out the shakes before trying to make it go faster, before you end up kissing tarmac @ whatever speed you think is cool and your bike mangled. :?