i need more umph (85 gs 700es)

[Anonymous]

I think the new GS bike of the month proves my previous theory, you can fit an 1100 into the 750ES frame! I am more than excited after seeing that bike and teh info on it.

Thanks!
Mike

 

[moto_dan]

I think the new GS bike of the month proves my previous theory, you can fit an 1100 into the 750ES frame! I am more than excited after seeing that bike and teh info on it.

Thanks!
Mike

It appears that it was more than a weekend project and I would love to see more details on this project myself. It looks great!

 

[Billy Ricks]

I think the new GS bike of the month proves my previous theory, you can fit an 1100 into the 750ES frame!

It also means air-cooled GSX-R750 or 1100 motors can be made to fit. The Kat motors aren't as high strung as the Gixxer motors.

 

[Anonymous]

Hello. I am new to the board and saw everyone talking about the 85 gs700. I just happen to have one but with a few cool tweaks ending in a super responsive 96HP street monster. I went to AIM in Daytona Beach were I had the chance to really do some nice stuff to the bike and had some good help too. It has 767cc using a Falicon crank and Wiscoe pistons. Comp. is 12.8 to 1. Cams are custom Yosh. stage two setup with 5 angle vavle job. Head was ported. Piston, valves and head were of polished by hand to a mirror like finish (took me weeks to do it, had blisters to prove it, hehe). Rotating part were all balanced by hand. A gsxr oil cooler was used to keep this cooler. Carbs are 36mm but were tuned by the owner of Dynojet personally (he is kind of a jurk but a really smart jurk,LOL) using some wizbang nylon jets, new springs and neddles and four K&Ns on a Dynojet dyno of course. Exhuast was a custom Vance & Hinse with a Rat Trap baffle/tip that was run off the choke lever (thoery was you could close it up coming out of a corner for more torque, could not really say it worked. I used it when I saw a cop as the open baffle of the Rat Trap was quit loud).Trans have all been undercut. Frame was redone for added streinght and to be lighter. Many parts of the bike were drilled to save weight. Progresive front springs and a Kolien?? in the rear. I am sure I am missing some things here but you get the picture. The end product of this labor is awesome. It produced 96HP at 12,500rpms and wieghed in at 396lbs dry. It runs a little on the fat side down low but it is really responsive. On the back curvy roads it a real treat.

This was all done about 10-12 years ago when parts were more available but most could still be done.There is always a way to improve on a motor, it all about how much money and time you want to spend. I am the same guy that has a 250+hp ford escort, hehe, turbos are fun too

 

[Anonymous]

Re: mods

Re: mods

I'd like to hear more about this. What sort of homebrew efi kit did you get? Where did you get it from? Same questions for the turbo.

The efi is cobbled together from gpz750turbo throttle bodies, injectors, plenum chamber and pressurized pipework, and tps sensor, a aftermarket fuel pump, homemade adjustable pressure regulator and im in the process of replacing the (unreprogrammable) gpz efi computer with a megasquirt.
http://www.bgsoflex.com/megasquirt.html
Turbo wise, I was using a hitachi ht10b, again from a gpz turbo, but ive taken my gs out to 850 since and the lil ol hitachi doesnt reliably flow enough air for the bigger motor, so ive moved over to a garret t2, headers are homemade based round the gpz turbo ones but with the fittings to suit the t2. Most of the problems are from low oil pressure. Hope to solve this finally with a morgo crank driven gear pump for a ariel square four dedicated to pumping and scavenging the turbo......
http://fluffycentral.com/photos/GS850DB-pic2.jpg

Any updates? Hows the megasquirt treating ya? A friend of mine is working on getting his palm setup to tune a megasquirt (that he's adapting to a 200cid ford inline six). At first he's going mild N/A then planning on ~15psi(rail the 2bar map sensor). Should be an interesting project.


-=Whittey=-