Bandit Alley

MODEL SPECIFIC => BIG BANDIT BANTER => Topic started by: Thief400 on March 07, 2005, 01:28:25 PM

Title: GSXR Carbs
Post by: Thief400 on March 07, 2005, 01:28:25 PM
Have any of the 1200 owner ever swapped your carbs over to the 40mm carbs that came on mid 90's gsxr 1100 here in Canada. It made a huge difference in power compared to the 36mm the the US got. 145 to 160hp depending on what you had done to the motor
Title: GSXR Carbs
Post by: Red01 on March 07, 2005, 07:13:56 PM
Don't think there's anyone here that's swapped out carbs - that posts regularly anyway. There are several non-stock carb'd bikes at other sites, but it seems they usually go with smoothbores if they're at a mod level that can benefit from bigger carbs.
Title: GSXR Carbs
Post by: gsxr400 racer on March 07, 2005, 07:27:19 PM
Quote from: "Red01"
Don't think there's anyone here that's swapped out carbs - that posts regularly anyway. There are several non-stock carb'd bikes at other sites, but it seems they usually go with smoothbores if they're at a mod level that can benefit from bigger carbs.

DCLANDER-when to 750 slingshot carbs on the 1200.
Title: GSXR Carbs
Post by: Red01 on March 07, 2005, 08:43:46 PM
Quote from: "gsxr400 racer"
DCLANDER-when to 750 slingshot carbs on the 1200.


Like I sad,
Quote
that posts regularly anyway
Title: GSXR Carbs
Post by: PitterB4 on March 07, 2005, 09:05:06 PM
Quote from: "Red01"
Quote from: "gsxr400 racer"
DCLANDER-when to 750 slingshot carbs on the 1200.


Like I sad,
Quote
that posts regularly anyway


I'm not sure he's been back since the 'resurection' but Dan Lander was a fairly regular member before the board's amnesia-inducing vacation.    :wink:

Can I ask a dumb question...  I've seen it many times now but never with an explanation... WTF is 'Slingshot'?
Title: GSXR Carbs
Post by: Thief400 on March 07, 2005, 09:25:34 PM
If my memory serves me right Suzuki decided to name the carbs Slingshot for some reason. If you search for Bandit 400 in google pictures you will find a few with slingshot on the tank for someof the different markets.
I think the 750 were still only 38mm. not the sewer pipe size 40mm  lol
Title: GSXR Carbs
Post by: Red01 on March 07, 2005, 10:00:34 PM
The term gets thrown around a bit. Commonly it's the limited edition homologation GSXR750R, aka "double-R" models. They had a lot of differences from the standard issue GSXR750. Most notable visually is solo seat tail and seat-of-the-pants is an extra 8-10 hp - which came from a different head and the Mikuni "Slingshot" semi-flatslide carbs. You'll see terms like Slingshot frame, swingarm, bodywork, etc... these are referring to the double-R's unique parts. Reality, only the carbs were real Slingshot. Slingshot is the name Mikuni gave the carbs with semi-spherical ridges on the slide faces smooth out air flow.

'88-'89 standard GSXR's got "Slingshot" style carbs, too, but they were only36mm, vs. the double-R's 40mm. In '90 the standard version got 38mm "Slingshot" carbs. These GSXR's will sometimes be referred to as Slingshot bikes, too... just less powerful than the double-R version.  :wink:

Here's a '89 GSXR750R:

(http://www.suzukicycles.org/photos/GSX-R/GSX-R750/1989_GSX-R750R_wb2_450.jpg)

And a standard '89 GSXR750:

(http://www.suzukicycles.org/photos/suzuki-history/1989/1989_GSX-R750_450.jpg)

And a standard GSXR750 with a cowl over the passenger seat:
(not to be confused with the solo only double-R)

(http://www.suzukicycles.org/photos/GSX-R/GSX-R750/1989_GSX-R750_wb_470.jpg)

The Slingshot style carbs have since been used on many other bikes, including GSXR400's, DR650's, RF900's, GSXR1100's - and the B12 as well as many non-Suzuki applications.
Title: GSXR Carbs
Post by: PitterB4 on March 07, 2005, 11:07:21 PM
Good stuff, Paul.  Thanks!

I know I've seen the B4s with "Slingshot" under the "SUZUKI" on the tank.  It looked like it belonged there but I wasn't sure if it was some aftermarket, wannabe stuff or the real deal.
Title: GSXR Carbs
Post by: gsxr400 racer on March 07, 2005, 11:43:10 PM
mines a sling shot , story goes there is a part on the slingshot carbs that open up some port for better fueling in the carbs.?
Title: GSXR Carbs
Post by: Gnome on March 23, 2005, 05:22:15 PM
B12 has as standard 36mm carbs.

Dependant on year of GSXR 750 or 110, they came with a variety of carbs, and probably the best bet is a set of 38mm's.

Just remember, the larger the carbs, the more top end you gain, but the more mid range you loose.

A nice 1216 big bore with sum 38's will go nicely, and give about 150bhp too. Niiicccceee..... :bigok:
Title: GSXR Carbs
Post by: B12MoJo on March 24, 2005, 01:56:00 AM
Been wanting to do this to my Bandit.  Already makes 110HP with a stage II jet kit and bolt on.

Was thinking along the lines of a 1216 H/C kit, flat slides, cams, and clean up the heads - match the manifolds, and a 40 shot of nitrous.  Could easily get the B12 to 200HP at the wheel.  Good enough to nab some of the fastes Hayabusas... but on a bike that looks... IS... nearly ten years older.

I figured mayb $2500 to do this (me doing all labor), combined with the $2500 I gave for the bike... and I'd have one bad ass $5k bike.
Title: GSXR Carbs
Post by: chevsuz12 on March 24, 2005, 09:38:14 AM
B12mojo, you have only 110hp at the rear?  With stage 2 and pipe, you should be closer to 120hp or more.  Did you replace your midpipe?  What size jets are you running?  Back when I was only running stage 1 I dynoed at 114!
Title: GSXR Carbs
Post by: Thief400 on March 24, 2005, 09:39:19 AM
If it was me playing wtih a 1200 I would bolt on a set of 40mm carbs and cams from a 91 GSXR 1100 Install a good full pipe and I would have an easy 160 to 170 at the rear wheel. And I dout there would be any loss of midrange. These big engine will really breath if you let them. There's a reason why Suzuki bolted on 40mm carbs on all of our  1100's We love our horse power up here   LMAO


 :banana:
Title: GSXR Carbs
Post by: Red01 on March 24, 2005, 04:30:15 PM
You aren't gonna get 160-170 rwhp out of a B12 with 40's and a pipe.
You're at least going to have to run GSXR cams and bump the compression up. Remember, the B12 is in a much milder state of tune than the GSXR1100 was.

When Dale Walker built his 1G B12, he got an honest 150 rwhp & 96 ft/lb of torque - with the stock carbs... he did have the following mods though:

Holeshot/JE 1216cc piston kit
Holeshot cylinder head porting & comp valve job
GSX-R intake cam
Holeshot Stage 2 jetting
Title: GSXR Carbs
Post by: Bob Holland on April 27, 2005, 10:21:35 PM
I have the 1246 kit with Laser Head 1mm over exhaust SS valves, 1.5 mm over intake SS valves, Dyna ignition, G21 cams, GSXR clutch, 38 mm flatslides, and a bunch of more things, I make 155 RWH.
Title: 750W carbs
Post by: AtomizeV on May 24, 2005, 05:45:45 AM
I'd like to ask Paul if you know what size GSXR750W carbs run on.  tnx
Title: GSXR Carbs
Post by: Red01 on May 24, 2005, 04:27:07 PM
I don't know off the top of my head. It may make a difference on what year.
Not sure their carb spacing is compatible with the air-oil colled mills either.
Title: GSXR Carbs
Post by: smooth operator on May 29, 2005, 10:33:50 PM
Quote from: "Red01"
Quote from: "gsxr400 racer"
DCLANDER-when to 750 slingshot carbs on the 1200.


Like I sad,
Quote
that posts regularly anyway


 I still have the stock carbs,I went with the slingshot cams. I was tempted to try a set of 38 Kein flatslides though. I knew someone who had a set,but I did'nt have the $. On the Badits RUS list, there were Banditos who switched to the 38&40 flatslides. And it really makes a difference
Title: GSXR Carbs
Post by: smooth operator on May 31, 2005, 07:55:29 AM
I take that back,they were 40mm Keien flat slides that were for sale,I should see if he still has them. They were on a gsxr1100,a guy I know from the YMCA. He sold it to buy a new Rlast yr. But a set of Keien flatslides are up around a grand :shock: ! I ended up putting $500.in a back shock instead after already having a gsxr shock. I found that HP is great,but may not actully get me around the track any faster. (if I ever get back on the track,now shooting for 6/25) If I were running on the drag strip,the flatslides  would be the ticket. But for my riding,its hard to justify spending the grand.  Dan Lander
Title: GSXR Carbs
Post by: gsxr400 racer on June 01, 2005, 12:13:27 PM
you know you better get to the track.