Author Topic: a question on gsxr camshafts in bandit 1200 (Read 17741 times)

techb · « **on:** April 08, 2007, 06:25:32 PM »

I am thinking about putting a gsxr intake camshft on my 2003 b12. I am wondering what years of gsxr camshafts fit? Any year? Do I need to adjust the fuel mixture for the mod? Thanks

Bob Holland · « **Reply #1 on:** April 08, 2007, 09:51:24 PM »

Any GSXR 1100 before 1991. The cams that work have 4 lobes per cam, the newer ones have 8 lobes per cam. The 89 750 cams have more lift than the 1100 cams. My best ET and MPH was with 89 1100 cams, and the dyno was also, all though I am now running the Cammotion G21 cams with .380 lift.

Red01 · « **Reply #2 on:** April 08, 2007, 12:05:35 AM »

Holeshot offers GSXR cams, I think these are the '89 GSXR750 ones, but his site doesn't say for sure. You could always contact Dale and ask.

The years of cams that fit:
GSXR750 1985-1990
GSXR1100 1986-1990

NOTE: You must use B12 cam sprockets with cams from GSXR's (or any other SACS family motor) as they are different.

In 1991 the GSXR's went from screw adjust to shim adjust and that's when & why the lobe count doubled. The entire head from a 1991 GSXR750 or a 1991-1992 GSXR110 can be swapped onto a B12 motor (as can the earlier head), but if you swap in a GSXR head you need to use the B12's cam sprockets.

techb · « **Reply #3 on:** April 09, 2007, 11:52:20 PM »

thanks for the infomation. since I am increasing the air into the motor do I need to increase the amount of fuel into the motor or is it not enough to worry about. thanks

Bob Holland · « **Reply #4 on:** April 10, 2007, 09:31:33 AM »

If you already have a jet kit installed, I don't think you will have to much to the carbs. Increased air flow should increase the fuel also, and the ratio should not change.

techb · « **Reply #5 on:** April 10, 2007, 09:51:36 PM »

That sounds great. I do have a jet kit. I do believe I am going in that direction. Thanks for the info.

gyrogearcrunch · « **Reply #6 on:** April 12, 2007, 09:40:36 PM »

Quote from: "BHolland"

Any GSXR 1100 before 1991. The cams that work have 4 lobes per cam, the newer ones have 8 lobes per cam. The 89 750 cams have more lift than the 1100 cams. My best ET and MPH was with 89 1100 cams, and the dyno was also, all though I am now running the Cammotion G21 cams with .380 lift.

Great info - thanks. What kind of torque does the modded motor make with the 89 1100 cams? Have you installed other updates, like cam oiler hoses and manual cam chain tensioner?

Thanks, Herb

Bob Holland · « **Reply #7 on:** April 13, 2007, 09:24:00 AM »

1998 Suzuki Bandit, J&E 13 to 1- 1246 Piston Kit, Lazer Level 3 Ported Head w/ over-size stainless steel, 30mm intake and 26mm exhaust, valves, APE bronze valve guides, Heavy Duty Valve Springs. CamMotion G21 Cams w/ Slotted Sprockets, Holeshot top end oiler kit, Mikuni 38mm Flatslide Carbs with K-N Pod Filters, Quarter Turn Throttle. 4” over swing arm, HEL Oversized Oil Cooler w/ SS Lines, Hindle SS Exhaust, Holeshot Power Shifter3, Dyna shift light, Pingel High Flow Petcock, GSXR 1100 Clutch, Cable clutch conversion, GSXR 1100 shock rebuilt by Lindeman, Front Forks Rebuilt by Lindeman, LSL Rearsets, Tokico 6 Pot Brakes w/ SS Lines,
155 RWH, 94 ft lb torque, With 89 GSXR 1100 Cams
9.78 et at 139.84 mph best ¼ mile.

gyrogearcrunch · « **Reply #8 on:** April 14, 2007, 09:41:35 PM »

Quote from: "BHolland"

1998 Suzuki Bandit, J&E 13 to 1- 1246 Piston Kit, Lazer Level 3 Ported Head w/ over-size stainless steel, 30mm intake and 26mm exhaust, valves, APE bronze valve guides, Heavy Duty Valve Springs. CamMotion G21 Cams w/ Slotted Sprockets, Holeshot top end oiler kit, Mikuni 38mm Flatslide Carbs with K-N Pod Filters, Quarter Turn Throttle. 4” over swing arm, HEL Oversized Oil Cooler w/ SS Lines, Hindle SS Exhaust, Holeshot Power Shifter3, Dyna shift light, Pingel High Flow Petcock, GSXR 1100 Clutch, Cable clutch conversion, GSXR 1100 shock rebuilt by Lindeman, Front Forks Rebuilt by Lindeman, LSL Rearsets, Tokico 6 Pot Brakes w/ SS Lines,
155 RWH, 94 ft lb torque, With 89 GSXR 1100 Cams
9.78 et at 139.84 mph best ¼ mile.

Got it - thank you! You have 94 lb-ft of torque; amazing. Where is Lindeman's located?

Herb

Bob Holland · « **Reply #9 on:** April 14, 2007, 10:18:43 PM »

Lindeman Engineering
520 McGlincey Ln. #3
Campbell, Ca. 95008
408-371-6151

This address and phone number are about 6 years old, I hope that they are still good.

gyrogearcrunch · « **Reply #10 on:** April 15, 2007, 09:27:19 PM »

Quote from: "BHolland"

Lindeman Engineering
520 McGlincey Ln. #3
Campbell, Ca. 95008
408-371-6151

This address and phone number are about 6 years old, I hope that they are still good.

Thanks - googled their website using the address you supplied. They're still there.

2005B12S · « **Reply #11 on:** April 15, 2007, 11:57:44 PM »

Rick at Cogent Dynamics is another option. He is very schooled on the B12 and can do forks and rear shocks. he has a new height adjustable shock for around $500. I just bought one for my '05 model

very nice rear shock, the extra ride height at the rear does wonders. He is a frequent contributor at MaximumSuzuki.

Good Luck, Ed

Red01 · « **Reply #12 on:** April 16, 2007, 02:09:45 PM »

Ed, if it works half as good as it looks, it should be great!

gyrogearcrunch · « **Reply #13 on:** April 18, 2007, 12:58:31 PM »

Quote from: "2005B12S"

Rick at Cogent Dynamics is another option. He is very schooled on the B12 and can do forks and rear shocks. he has a new height adjustable shock for around $500. I just bought one for my '05 model

very nice rear shock, the extra ride height at the rear does wonders. He is a frequent contributor at MaximumSuzuki.

Good Luck, Ed

Thanks, Ed. I have a '99 B12S, where the rear shock is height-adjustable by changing the pre-load. I set mine to 7, the maximum, and it made a positive difference in the handling, but the durn thing still "falls-in" doing slow turns. Also, I don't understand why the manual says that "4" provides the stiffest rebound damping!

I'll try raising the front fork through the triple-clamps next. The front fork is already set to max pre-load as well, but I'm not thrilled with the way it "pogos" over bumps now. I know that progressive springs and gold valves are the way to go, but I want to try everything else first. Maybe I can get some advice from Rick at Maximum Suzuki.

Regards, Herb

2005B12S · « **Reply #14 on:** April 18, 2007, 10:55:01 PM »

Quote from: "gyrogearcrunch"

Quote from: "2005B12S"
Rick at Cogent Dynamics is another option. He is very schooled on the B12 and can do forks and rear shocks. he has a new height adjustable shock for around $500. I just bought one for my '05 model

very nice rear shock, the extra ride height at the rear does wonders. He is a frequent contributor at MaximumSuzuki.

Good Luck, Ed

Give Rick a shout, he has a front fork mod where he cuts the progressive part out of the stock fork springs (basically converting them to straight rate) and uses a spacer to make up the difference. He can also give you advice on what type of oil and quanity to run up front. His shop is Cogent Dynamics, I am very impressed with his work.

Good Luck, Ed.

Thanks, Ed. I have a '99 B12S, where the rear shock is height-adjustable by changing the pre-load. I set mine to 7, the maximum, and it made a positive difference in the handling, but the durn thing still "falls-in" doing slow turns. Also, I don't understand why the manual says that "4" provides the stiffest rebound damping!

I'll try raising the front fork through the triple-clamps next. The front fork is already set to max pre-load as well, but I'm not thrilled with the way it "pogos" over bumps now. I know that progressive springs and gold valves are the way to go, but I want to try everything else first. Maybe I can get some advice from Rick at Maximum Suzuki.

Regards, Herb