What is the quickest e.t. old GS, street ridden and legal you know of?

[maicojoe]

Just kinda wondering what the quickest E.T. you guys know of, preferably with a real time slip, for a street legal and street ridden GS? No trailered bikes, no wheelie bars, no slicks, no slider clutch, just a regular hand clutch, just a bike either yourself or a buddy would ride to the track and back home. Need a target to shoot for......

 

[posplayr]

Ask Rapidray. But unless you plan on a 1400cc monster you won’t get there.

 

[GS1150Pilot]

I think there are some high 8 second bikes that are ridden on the street.

 

[red1100]

My 831100E with Yosh pipe and pods ran 10.40s at 135 at Woodburn dragstrip back in 1984. I?m not a motorcycle racer so getting off the line was challenging. Rode it down there and rode it home. Still riding it today.

 

[Guest]

My 831100E with Yosh pipe and pods ran 10.40s at 135 at Woodburn dragstrip back in 1984. I?m not a motorcycle racer so getting off the line was challenging. Rode it down there and rode it home. Still riding it today.

Impressive very impressive!

 

[Guest]

I think there are some high 8 second bikes that are ridden on the street.

Yep I have one!

 

[GregT]

There's not a lot of bike drag race action here - but back in the '90's I had a customer who was into bracket racing his street legal 1150ESE.
Big bored, ported, RS36's and a pipe. 8.8's at 138mph. Won a couple of NZ titles bracket racing.
The amazing thing from my point of view was that he used the stock rear wheel....

 

[Guest]

There's not a lot of bike drag race action here - but back in the '90's I had a customer who was into bracket racing his street legal 1150ESE.
Big bored, ported, RS36's and a pipe. 8.8's at 138mph. Won a couple of NZ titles bracket racing.
The amazing thing from my point of view was that he used the stock rear wheel....

Even more impressive!

 

[GregT]

Even more impressive!

From memory he used Dunlop 591's - and a huge amount of self-control on the throttle.....

 

[Tom R]

I’m hardly an expert, but if your talking about a basically stock bike and amateur rider, 11 seconds seconds would seem pretty impressive to me.

 

[Guest]

I?m hardly an expert, but if your talking about a basically stock bike and amateur rider, 11 seconds seconds would seem pretty impressive to me.

Yes the gs1100 11.30?s is what they run stock with a pipe and re jetting they run high 10?s.
The gs1150?s were high 10?s stock and mid 10?s with a pipe and rejetting.

 

[Guest]

From memory he used Dunlop 591's - and a huge amount of self-control on the throttle.....

Ok now your pushing it. A 591 Dunlop will never push a bike into the 8’s.
You would have to be quite the rider just to get a 591 to push a bike into the 9’s

 

[Guest]

My 84 GS1150 1198cc flat tops 29.5/25 Nicely ported head, .100 milled off the head, G9/G7 cams, 40mm RS Mukuni?s, Bottom end built to handle the extra hp. Also has No2 spraying about 80hp extra.
Best et on motor 9.72@146mph
best et on No2 8.98@158
this is on a modified 495lbs stock wheel base chassis lowered with air shifter with hand clutch. 60? footers in the high 1.50?s to low 1.60?s
I rode this bike everywhere. All over Daytona Beach with the wifey on the back. Back and forth to work. A very dependable motor.

 

[Sandy]

Ok now your pushing it. A 591 Dunlop will never push a bike into the 8’s.
You would have to be quite the rider just to get a 591 to push a bike into the 9’s

I don't know squat about drag racing bikes but if they were a 591R (track compound) they had way, way, way more grip then the regular vanilla flavored ones. By the way, great times on some of these bikes ....Suzuki rules. LOL.

 

[GregT]

Ok now your pushing it. A 591 Dunlop will never push a bike into the 8?s.
You would have to be quite the rider just to get a 591 to push a bike into the 9?s

They were the production race compound version. My business partner - a tyre dealer - sponsored him.

He was indeed a very good rider. If he came back to me on a Monday and said " that last engine mod was worth .3sec and 4mph", I knew that was the average over probably 6 runs. As I said, he won several NZ bracket titles on the bike.
He's still got the bike. He contacted me a few years back about building it up into a McIntosh Bathurst replica frame. That would still have been street legal here - but would have used modern 17 in rubber. I think finances/family stopped that.

 

[maicojoe]

My 84 GS1150 1198cc flat tops 29.5/25 Nicely ported head, .100 milled off the head, G9/G7 cams, 40mm RS Mukuni?s, Bottom end built to handle the extra hp. Also has No2 spraying about 80hp extra.
Best et on motor 9.72@146mph
best et on No2 8.98@158
this is on a modified 495lbs stock wheel base chassis lowered with air shifter with hand clutch. 60? footers in the high 1.50?s to low 1.60?s
I rode this bike everywhere. All over Daytona Beach with the wifey on the back. Back and forth to work. A very dependable motor.

I think this is what I had in mind, stock wheelbase, stock frame, street tire, lowered suspension a little but not so much it can't be ridden on the street, pump gas, hand clutch but air shift, no wheelie bar..... but I think I would want to trade the funny gas for an extra 200cc big bore? I have been collecting some parts for the last few years to build something like this, or like the the one in NZ, something I can reliably ride to and from the track. But how the heck do you launch it without slipping the clutch something fierce, prevent massive wheelies and smoking the tire? What was your clutch setup and gearing on this bike? And what was the rider's weight?

 

[headsbikesmopars]

Back in the eighty's I saw the quickest factory stock '85 GS1150 I ever saw make a pass @ 11.11 @ 123mph . All totally factory stock right thru the mufflers and air box. Big guy though tall and about 240lbs. Most stock 1100's went i nto the mid elevens @119/120 mph range. Street riders no racers.

 

[trippivot]

great challenge .. I'd start with low comp 1428 pistons. and a lager intake valve head. lighted small end crank ....

I think this is what I had in mind, stock wheelbase, stock frame, street tire, lowered suspension a little but not so much it can't be ridden on the street, pump gas, hand clutch but air shift, no wheelie bar..... but I think I would want to trade the funny gas for an extra 200cc big bore? I have been collecting some parts for the last few years to build something like this, or like the the one in NZ, something I can reliably ride to and from the track. But how the heck do you launch it without slipping the clutch something fierce, prevent massive wheelies and smoking the tire? What was your clutch setup and gearing on this bike? And what was the rider's weight?

 

[maicojoe]

great challenge .. I'd start with low comp 1428 pistons. and a lager intake valve head. lighted small end crank ....

When I talked with Dick at Speed Equipment about the head he did up, said it went 9.4 at 144 mph, at 1327cc or so, just the way it is now, bought from the original owner of the head. Has 26mm Exhaust and 28.5mm Intake.

 

[Cipher]

https://en.wikipedia.org/wiki/List_of_fastest_production_motorcycles_by_acceleration