Building a 7/11 racer : Suzuki GSX-R Motorcycle Forums: Gixxer.com
» Insurance
» Suzuki GSX-R Prices
» Sponsors
Go Back   Suzuki GSX-R Motorcycle Forums Gixxer.com > Gixxer Forums > Water Cooled Gixxers

Reply
 
Thread Tools Search this Thread Display Modes
Old 09-10-2011, 02:38 PM   #1
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Building a 7/11 racer

Hey

Becaus i am still working on my 'ram-air' system for my gsxr 750 and use the bike for street its alot of work to convert it every time i want to go to the track.

So i'll be buying/ making a 7/11 WC racer purely for track use only.

Question: i know the gsxr 94/95 have a lighter frame but is that frame also stronger then the 93 frame?

Also what year of the gsxr 1100 has the best/powerfull engine?

Any tips?

The engine is a straight bolt on correct?

Here is a list of the stuff i am planning for the bike:

GSXR1100 engine (tuned later on)
4-1 open exhaust pipe or standard exhaust (when there are noise limits)
Adjustable ignition timing
Dynatek ignition coils and if i still have money dyna ignition
Flat slide carbs, not sure which ones are the best FCR39/41 or TMR40 with velocity stacks
Ram-air airbox.

And of course remove any stuff that i dont need.

Any more tips for such project?

Greetings,
Benjamin
__________________
Forza Flandria!
BenjaminDG is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 09-10-2011, 08:17 PM   #2
Sabba
Club Racer
 
Sabba's Avatar
 
Join Date: Jun 2009
Location: Victoria, Canada
Motorcycle: '89 CBR 600 (SOLD), '93 GSXR 750 (SOLD), '04 GSXR 600
Posts: 3,156
Re: Building a 7/11 racer

Good luck getting those TMR's!

Other than that, it looks like a fun project!
Sabba is offline   Reply With Quote Quick reply to this message
Old 09-10-2011, 09:23 PM   #3
4strokeAaron
Lifetime Premium
 
Join Date: Sep 2005
Location: Indianapolis,IN
Motorcycle: 2001 Hayabusa,1991 GSXR 1100,1993 7/11 GSXR,1994 GSXR 1100,1989 GSXR 7/11
Posts: 411
Re: Building a 7/11 racer

I've noticed very little if any noticeable difference between 93 and 94-95 frames. The majority of the differences between the two have more to do with the headlight mounting setup. Both are good platforms to build a STUPID,DUMB, FAST 7/11. The 1100 motors from 93-98 will bolt right in without ANY modification. I'd use the newer style radial brake front end and the wheels as well. The forks are firmer and lighter. I've seen these bikes get down UNDER 430 lbs weight using a vast majority of stock Suzuki parts. The key is shaving as much weight off as possible. You can very easily build a 140 rwhp engine/chassis combo for cheap and have the satisfaction of beating up on bikes that guys still make payments on.
__________________
"GSXR's are like women...what a man likes and what he does with his is really none of your f*cking concern!!!"
4strokeAaron is offline   Reply With Quote Quick reply to this message
Old 09-10-2011, 11:39 PM   #4
RoamingBison
Fortunae Nihil
 
RoamingBison's Avatar
 
Join Date: Jul 2009
Location: Embrun, Ontario, Canada
Motorcycle: 1994 GSXR-1100W(R)
Posts: 2,897
Re: Building a 7/11 racer

Not sure about Euro models. Ben, but the North American 95-98 models had a different cam grind which put a little more HP out the back.
RoamingBison is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 07:07 AM   #5
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Re: Building a 7/11 racer

Then i'll think i will use a 94-95 frame since that also has the braced swingarm.

Are FCR 39 good carbs for ram-air, carbs not to small?

The engine will be a 1995 or later 1100W since that has a better torque curve (you are right roamingbison).

Rear shock will be replaced with a newer on, front end maybe later on.

As for the ram-air box, i have come to the conslusion that my homemade airbox is to small.

My home made airbox has a volume of 3L, the standard airbox has a volume of about 7L (more then double!).

Accelaration is not so very good when you are in 3rd gear or higher.

Suzuki did use airtech airboxes but it looks like the carbs itself were also in the box?

How did they do that?

Any way i reckon the easiest will be to adjust the standard airbox for ram-air since thats large enough.

The overall plan is to have a realtieve cheap bike that will (hopefully) put many newer bikes to shame
__________________
Forza Flandria!
BenjaminDG is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 12:28 PM   #6
4strokeAaron
Lifetime Premium
 
Join Date: Sep 2005
Location: Indianapolis,IN
Motorcycle: 2001 Hayabusa,1991 GSXR 1100,1993 7/11 GSXR,1994 GSXR 1100,1989 GSXR 7/11
Posts: 411
Re: Building a 7/11 racer

You can use ram air with FCR's...although from personal experience I can't say if it's worth it.Alot of trouble for just a track day bike.You can gain advantages elsewhere with a whole lot less headache.1100's can make GOOD power and they are torque monsters anyway due to the sheer mass of the crankshaft.I would recommend focusing on suspension setup and weight savings...There are some vids of a wc 750 GSXR putting in work on the track and the guy is picking off newer liter biles left and right...I think it was more due to the guys riding ability but it just goes to show that these bikes still deserve respect in the right hands.
__________________
"GSXR's are like women...what a man likes and what he does with his is really none of your f*cking concern!!!"
4strokeAaron is offline   Reply With Quote Quick reply to this message
Old 09-11-2011, 01:01 PM   #7
Sabba
Club Racer
 
Sabba's Avatar
 
Join Date: Jun 2009
Location: Victoria, Canada
Motorcycle: '89 CBR 600 (SOLD), '93 GSXR 750 (SOLD), '04 GSXR 600
Posts: 3,156
Re: Building a 7/11 racer

Quote:
Originally Posted by BenjaminDG View Post
Rear shock will be replaced with a newer on, front end maybe later on.
The '07 750 shock is a direct swap-in...no interference issues with the battery tray.
Sabba is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 06:58 AM   #8
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Re: Building a 7/11 racer

Quote:
Originally Posted by 4strokeAaron View Post
You can use ram air with FCR's...although from personal experience I can't say if it's worth it.Alot of trouble for just a track day bike.You can gain advantages elsewhere with a whole lot less headache.1100's can make GOOD power and they are torque monsters anyway due to the sheer mass of the crankshaft.I would recommend focusing on suspension setup and weight savings...There are some vids of a wc 750 GSXR putting in work on the track and the guy is picking off newer liter biles left and right...I think it was more due to the guys riding ability but it just goes to show that these bikes still deserve respect in the right hands.
Come to think about the carbs, the keihin FCR's wont proably fit into the original airbox.

Whats the performance difference between stock carbs and keihin FCR's?

The stock carbs for a 95 or later 1100W engine are 40mm correct?

What suspension do you suggest, rear shock will be replaced with a gsxr 750 K7 shock.

The 94-95 front end is lighter then the 92-93 front, no?

Or should i gor for a much newer front end?
BenjaminDG is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 08:47 AM   #9
4strokeAaron
Lifetime Premium
 
Join Date: Sep 2005
Location: Indianapolis,IN
Motorcycle: 2001 Hayabusa,1991 GSXR 1100,1993 7/11 GSXR,1994 GSXR 1100,1989 GSXR 7/11
Posts: 411
Re: Building a 7/11 racer

FCR's won't work with the stock airbox.The main advantage of Properly tuned FCR's over stock carbs is throttle response although their are some horsepower gains.I believe euro spec 1100's did come with 40's from the factory.As far as suspension I'd look seriously into a 2004 and later front end with radial brakes.They are lighter and more sturdy.They bolt right on as long as you swap steering stems.For a shock you can use just about any newer GSXR shock.The catch being it won't be sprung correctly so more than likely you will have to get the right spring for your weight.I use Busa shocks as at my weight(heavy)they are a bolt on affair and feel waaaaaay better than the soft stock sbocks on wc GSXR's.
__________________
"GSXR's are like women...what a man likes and what he does with his is really none of your f*cking concern!!!"
4strokeAaron is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 12:30 PM   #10
GixxerRacer371
Has been Texan longer than the cheerleader
 
GixxerRacer371's Avatar
 
Join Date: Oct 2002
Location: Garland, Texas
Motorcycle: Son's 04 GSXR 600
Posts: 26,226
Re: Building a 7/11 racer

If you are racing WERA Vintage 7 then you have to keep the forks and shock correct from that time period. No updating allowed...
GixxerRacer371 is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 12:42 PM   #11
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Re: Building a 7/11 racer

i will not be racing in any competitieve form, just a normal trackday.

But was getting tyred of rebuilding the whole bike when i was going to the track.

Question: can the 750 cdi and 1100 cdi be swapped out without rewiring or not?

I red there was some wheelie wire that lowered power output in 1st gear?
BenjaminDG is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 12:49 PM   #12
crzoomb
Supersport Racer
 
crzoomb's Avatar
 
Join Date: Apr 2004
Location: Rochester,N.Y.
Motorcycle: 94 1100 WR,'74 Triumph Trophy Trail,'04 RM 250
Posts: 4,874
Re: Building a 7/11 racer

You can use the 750 cdi on the 1100 engine BUT the 750 redline is 2000 rpm higher than the 1100's.

Yes there is a wheelie wire that retards ignition in 1st gear

Fastcat said (Look at the leads coming out of your neutral-sensor. If you have one wire on the neutral-sensor, then you do not have a "wheelie wire". If you have two leads, then one controls the neutral-light, and the other controls the signal to tell the ECU to retard the ignition in 1st-gear. If you are painstaking about it, you can use a scribe or icepick kinda tool and remove one of the connectors from the plastic terminal-block that both wires go into - if the one you remove renders your neutral-light ineffective, then you got the wrong one and need to put it back and remove the other one.
__________________
1994 1100wr, ported FBG head,timed cams,40mm Mikunis,'95 1100 header with Yoshi RS-3 muffler,750 intake manifolds,750 airbox,750 swingarm,750 passenger pegs,FactoryPro shift kit,530 conversion,+3 on rear sprocket,Yoshi +4 advancer,braided lines, ,integrated tailight w/leds,front flush leds,smoked speedscreen,Yoshi pegs, '08 GSXR 1000 clutch and brake master cylinders w/ CRG levers,muzzy fan.Nissin 6 piston calipers
crzoomb is offline   Reply With Quote Quick reply to this message
Old 09-12-2011, 02:56 PM   #13
RoamingBison
Fortunae Nihil
 
RoamingBison's Avatar
 
Join Date: Jul 2009
Location: Embrun, Ontario, Canada
Motorcycle: 1994 GSXR-1100W(R)
Posts: 2,897
Re: Building a 7/11 racer

Wheelie wire was US market only (think of it as a kind of set of training wheels for you folks! Just kidding of course).
RoamingBison is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 04:15 AM   #14
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Re: Building a 7/11 racer

Bought my bike that will be used for my 7/11 racer project.













Guess what i payed it for?
BenjaminDG is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 04:23 AM   #15
Hobocop
Back Marker
 
Join Date: Dec 2004
Location: Honolulu, HI
Motorcycle: '94 &' 97 GSX-R 750
Posts: 245
Re: Building a 7/11 racer

wow.....nice bike...

hmm...if we are playing the price is right...i'll say...3k

I spy rust
Hobocop is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 04:27 AM   #16
BenjaminDG
Lifetime Premium
 
Join Date: May 2011
Location: Flanders
Motorcycle: GSXR750/1100W racer and GSXR750SP
Posts: 1,345
Re: Building a 7/11 racer

Yes the subframe and plate are a bit worn and rust, i will buy a spare one from the same guy who has my engine (he has a LOT gsxr stuff).

Price is 1000 euro's, about 1200 US dollars.
BenjaminDG is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 10:07 AM   #17
Sabba
Club Racer
 
Sabba's Avatar
 
Join Date: Jun 2009
Location: Victoria, Canada
Motorcycle: '89 CBR 600 (SOLD), '93 GSXR 750 (SOLD), '04 GSXR 600
Posts: 3,156
Re: Building a 7/11 racer

You do realize that's not just a standard 750?

http://www.racing-show.com/R750Sport...portprod_.html

Please don't tear that thing apart!
Sabba is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 11:22 AM   #18
GixxerRacer371
Has been Texan longer than the cheerleader
 
GixxerRacer371's Avatar
 
Join Date: Oct 2002
Location: Garland, Texas
Motorcycle: Son's 04 GSXR 600
Posts: 26,226
Re: Building a 7/11 racer

I'll buy the tranny out of that 750 SPR engine!!
GixxerRacer371 is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 12:54 PM   #19
1192WP
Novice
 
Join Date: Jun 2009
Location: Manchester, UK
Motorcycle: GSXR1192WP, GSXR1100WP, TL1000S, Kawasaki KR-1S (3), Kawasaki KH400, Yamaha RD350 Sprintbike
Posts: 36
Re: Building a 7/11 racer

GSX-R750 SPR 1994-1995
A limited-edition racing homologation model and was available for two years. Factory parts included wide-mouthed TRM40 carbs, close-ratio gearbox, magnesium engine covers, ally water pump, six-piston brake calipers and a new braced swingarm, holding a wider 180-rear-section tyre. The SPR was also around 10 kilos lighter than the WP.


Good find for that money!

That will be a future classic if kept standard (certainly with those carbs fitted)
1192WP is offline   Reply With Quote Quick reply to this message
Old 09-19-2011, 01:34 PM   #20
GixxerRacer371
Has been Texan longer than the cheerleader
 
GixxerRacer371's Avatar
 
Join Date: Oct 2002
Location: Garland, Texas
Motorcycle: Son's 04 GSXR 600
Posts: 26,226
Re: Building a 7/11 racer

Quote:
Originally Posted by 1192WP View Post
GSX-R750 SPR 1994-1995
A limited-edition racing homologation model and was available for two years. Factory parts included wide-mouthed TRM40 carbs, close-ratio gearbox, magnesium engine covers, ally water pump, six-piston brake calipers and a new braced swingarm, holding a wider 180-rear-section tyre. The SPR was also around 10 kilos lighter than the WP.


Good find for that money!

That will be a future classic if kept standard (certainly with those carbs fitted)
yep! +1 sad to see this bike get butchered....

Stuffing an 1100 engine in this bike would be like taking a Honda RC45 and stuffing a V-Max engine in it or taking a Yamaha R7 and stuffing an R1 engine in the frame.... taking something that is a real collectors item and destroying it.

Last edited by GixxerRacer371; 09-19-2011 at 01:47 PM.
GixxerRacer371 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Suzuki GSX-R Motorcycle Forums Gixxer.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 06:05 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2008 2013 Gixxer.com
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum