How quick is your GS

[lhanscom]

Very small in comparison to what's been listed here. I have a pretty much stock GS700es I'll have a 4-1 on it, and the jetting to match shortly, maybe some k&n pods if I can swing it. It's a small 130 in the back, but I don't think traction will be my limitation. :roll:

[skip]

I ran with a 130 on the back of mine and due to the mods traction was a huge problem. The first thing you have to decide is if you want to race to go rounds In wich case consistency is the most important thing. or If you just want to squeeze the best et out of you bike. One of the cheapest mods that will help is gearing. The right way to do this is to increase the rear sprocket ( this avoids chainwrap that can cost you hp) but its much cheaper to decrease the size of your front sprocket. and the results are good. You want to use all of your gears in the 1/4 mile and be at redline when you cross the finish. You also are going to have to get used to high rpm launches slipping your clutch.( if you go to your dragstip on a practice day you will get more runs in) You will shave alot of miles off your clutch but it is the only way to get a good et with a stock chassie. dont worry about heating your tire just drive around the water pit. The best thing to do is once you get to the dragstrip find someone with a bike that is simmilar and ask questions, most racers are willing to help. with practice you should be in the mid to low 12 second range but dont be dissapointed if yoiur first few runs are in the 13 second range. I started drag racing a kz 650 in 1980 and my first run was 14.7 two weeks later i had the bike running 12.6 just by gearing , jetting,(jet for open exhaust) and learning to drive.

[Anonymous]

Hi Everyone,
I know a lot of you know my bike, but to those who don't, here it is. Our 79gs1000 2-v is now at 1260cc and about 180 h.p. I run huge Web Cams and a severely ported head, Lectron carbs, JE pistons, etc. The block, cylinders and head are all stock Suzuki.
This bike runs 9.18 at 148 m.p.h. It is naturally aspirated. It has run under 5.80 in the 1/8 @ 115. The best 60 fts. is a 1.26. Our secret (and I won't divulge my settings) is in the lock-up clutch. I have it set so that when you launch, it "wacks" back on the wheelie bars and carries the front wheel all the way through 1st gear. And believe me before we got all our settings right, this bike was a MONSTER to ride. It would launch and bite you on the ass before you would know it.
Now it is the most reliable race bike I have ever owned with over 300 runs on the motor which has NEVER been apart. The leakdown showed between 2&6% loss. Amazing!!!
Trust me, the old 2v motors can hold their own against any modern machinery out there. I'm 51 yrs old and can see me running it until the day I retire.
Our website is at

https://www.nastyracing.ca

Thanks, Paul Jones

[massakins]

Paul, I've viewed your web site before and appreciate the effort you've put into your program. Nice job. Your bike and mine are very similar in performance, but do it considerably different. One question, what primary drive gearset are you running and what final drive sprockets do you use? My turbo GS1000 2v dynos 188hp at the rear wheel, stock helical gears on primary drive, 15t/43t final drive and 1.40 60' times. Would appreciate any comments on the best way to lower the 60' times.

[Anonymous]

Hey Massakins,
I run stock primary gears, don't let anyone tell you to go the more expensive route. My final drive is 16x49. My bike is peaking out in 5th gear as I run through the traps. Since I run a little 5.5" tire with such hi horsepower, I use a lock-up clutch. I launch at about 5000 and the tire hardly spins one revolution before the tire grabs.This really is my secret. What are you using? The lock-up is the reason for the great 60fts. I can get technical for you if you or anyone else needs to know why this clutch set up is the way to go for me.

Paul

https://www.nastyracing.ca

[Anonymous]

8.95@155 1/4 mi., 5.60@126 1/8 mi.
1.32 60 ft.
1150 motor bored 3mm, 7.8 c.r, bone stock head and cams, turbo, 68" w.b., street tire, no bars.
8.77, 1.28 60 ft. w/slick and bars.
180 h.p.@15 lbs. boost
283 h.p.@30 lbs. boost

[Anonymous]

Very good times!! I've thought about a turbo but have heard it's more complicated on the old gs' because of the low pressure oil pump. Do you use a remote supply for the turbo then? Please give me more details.

Thanks, Paul

[Anonymous]

Hi Paul,
The turbo oil supply is fed from the oil sender galley. Also using the 750 oil pump gear set. Hasn't been any problems so far (knock on wood). The drawback is that there's only enough oil pressure to feed the turbo, can't use a top end oiler.
My only dislike of the turbo setup is that it's very sensitve to temperature changes. Makes a lousy et/bracket racer, for me anyway.
I have the single stage adjustable wastegate, the newer multi stage with an electronic controller would probably be the way to fly once you got some reference data.
Mike

[massakins]

Mike,

What carb are you using on your turbo. I've been running the Mikuni HSR42 (flatslide with rollers) and found it very forgiving to different temperatures. Fuel pump helped as well. Still trying to optimize the accelerator pump but overall very pleased. What boost were you running during the 5.60 et in the 1/8?

Pat

[Anonymous]

Hi Pat,
I use the s&s super b and a holley red fuel pump.
The 5.60 was at 16 lbs. Gearing is 16/39, so it's kinda tall for 1/8 mi.
I thought about trying the mikuni, but since i rarely ride on the street anymore (no r. suspension) i couldn't justify the cost and the extra jetting hassels. Jetting gives me headaches, and the s&s is almost as simple as a rock.
Mike

[Anonymous]

Ok my 1150 - bored to 1300 / ported head standard valves / V&H street system / 38mm flat slides / lowered / standard cams / standard ignition set up to run total loss / 140 section tire / no air shifter / 220kg + 70kg rider all = 10.11 @ 139mph

[kingofvenus]

83 750 es 11.86 yosh pipe, jet kit. 1428 car tire, ???? unfinnished prodject 236hp on Star racing's dyno. need's tranny. for sale cheap. quit racing due to illness. dudlydoo@vbe.com

[jimcor]

1980 GS 550...eta: Soon. @ or before sundown.

[Anonymous]

test

[Anonymous]

8.21@176, with a crap 1.50 60, 8s on motor w 210 pound pilot
SBS legal 81 gs, 82 katana bodywork
Franco 1428cc belluci 31/27 head 41 keihins, NOS w medium jets
looking to be the 1st 200#+ rider in the 7s on a shootout bike
will definitely go 7s with a jockey
Yah I will run ya, meet me at the Rock in may!
Anthony