Cyzygy GT750 V Clockwork Orange H2 750

Getting your blazingly fast Suzuki powerplant to perform even better!

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Craig380
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Craig380 »

Cyzygy wrote:Craig,
The bike only competes at Nostalgia Meets, it runs at street meets and test & tunes for time only as well. The only rules at Nostalgia is "Classic Bike":- Pre 1985. Yes we could run a slick and wheelie bars but we just want a "Street Legal" (except for the loud pipes) GT 750 to run 10 seconds. It is registered for the road, I swap it back to stock pipes for the annual inspection, all lights and horn work. It is foot shifted, no air shifter or quick shifter (no ignition kill).
Hopefully it won't be long before you get that 10.99, it looks and sounds fantastic.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
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Cyzygy
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

Last weekend at Sydney Dragway's IHRA T&T 10.959 @ 120.31 mph :-), backed up by 10.985 @ 120.13 and 11.017 @ 119.30 mph. Brett Copping riding and now using the Flannery Motorsports modified GT cylinder head, so full Flannery top end and expansion chambers.
4 pics go to https://www.facebook.com/Super-Eliminat ... 227981412/" onclick="window.open(this.href);return false; and scroll down.
Bob
Craig380
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Craig380 »

Congratulations! That's fantastic for a 42-year-old street bike. How did it feel when you saw that first 10.9?
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
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Cyzygy
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Location: Over the hill in Fairfield NSW AU.

Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

10 second Street GT 738cc.jpg
10 sec GT 1.jpg
AWESOME.
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Craig380
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Craig380 »

That's a great pic :up:

Looking at the slip, I thought the reaction time of 0.016 seconds was amazing, then I checked the earlier slip you posted, and the r/t there was 0.017 :shock: , your rider Brett has a gunfighter's reactions and no mistake.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
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Cyzygy
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Location: Over the hill in Fairfield NSW AU.

Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

Last weekend at Willowbank Dragway Brett Copping pb'd the GT 750 again, 10.813 @ 120.39 mph.
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tz375
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by tz375 »

Awesome work. Congrats. I need another 40hp and to lose about 30 pounds.... Oh and to learn how to ride like that. :?
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Cyzygy
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

tz375 wrote:Awesome work. Congrats. I need another 40hp and to lose about 30 pounds.... Oh and to learn how to ride like that. :?
Richard,
You're being too hard on your bike, as all as you need is Brett Copping to ride it for you, instant 10s:-)
Bob.
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tz375
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by tz375 »

And that is supposed to make me feel better about myself....... :? :cry: :lol: :lol:
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Cyzygy
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Location: Over the hill in Fairfield NSW AU.

Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

Brett Copping PBd the GT 750 again last night 10.777 and 123.87 mph.
Bob.
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by D&D CHASSIS »

Outstanding!! What changes did you make?
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Cyzygy
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

D&D CHASSIS wrote:Outstanding!! What changes did you make?
Dave,
Raised the compression a little and reduced the squish clearance a little.
Bob.
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tz375
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by tz375 »

Awesome results Bob and congrats to your rider.

With domes in the head you can do that squish thing. I still have a stock head with no squish band which could be part of my 111 issue. Need more horses. :?

I have forgotten, but do you still have BS40 carbs or did you change to something more suitable?
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Cyzygy
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Posts: 39
Joined: Sat Oct 06, 2012 10:54 pm
Country: Australia
Suzuki 2-Strokes: TR750, GSXR750 FIM WRH, GT750, RGV 250 / 500
Location: Over the hill in Fairfield NSW AU.

Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by Cyzygy »

tz375 wrote:Awesome results Bob and congrats to your rider.

With domes in the head you can do that squish thing. I still have a stock head with no squish band which could be part of my 111 issue. Need more horses. :?

I have forgotten, but do you still have BS40 carbs or did you change to something more suitable?
Richard,
I've fitted 40mm Lectrons, unfortunately no dyno figures, now I'm retired there is no $s for dyno sessions. Once we have it going as quick as we think it can go we will fit the BS40CVs again to put it in the 10s with them.
Bob.
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tz375
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Re: Cyzygy GT750 V Clockwork Orange H2 750

Post by tz375 »

I had forgotten that Lectons were a factory option in Australia on stock bikes :roll: :wink:

I see I need to get a set from Australia to run in the "Stock" class here..

Well it was worth a try :lol:
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