How fast can a 750 go?

PLUMMEN wrote:

a warmed over kz1000 with a header and a little tweaking has a hard time cracking 140 with stock gearing,i dont care what anybody says.
ive done 145 according to a vette speedo next to me on a hot rodded 1170,im here to tell ya kzs are aerodynamically challenged at the speed with a body strapped on them to say the least! :woohoo:

That's right on par with my high speed findings as well, to a tee. The big bikes fight the wind ferociously. But... when I ducked down the cbr was eaten up fairly quickly.

My spedo drive gear is broken so I don't know exactly how fast it is when your helmet is pushed into your face to the point that it starts blurring your vision. My guess is fast enough. I'm +2 in the rear with a 160/60-18 tire so it seems to run out of gear fairly quickly.

Speaking from experience your 750 has a lot of work to go to compete with the big boys on the salt. I have a reasonably modded KZ750 (Pods, open header, ported and polished GPZ head, 810 big bore, jetted) and i have only been able to hit right at 120mph on pavement as according to my GPS. More speed is very possible though with re gearing being it had more power to give just ran in to the red lines. I can also say that nothing is impossible. i was an official at the BUB Speed trials and watched a insanely modified gsx-r 750 do 230mph, and a 50cc do 140ish so dream big i guess. As far as a record goes a small kz i-4 goes it might not be your best bet, but i do plan on taking mine out there next year just to say ive done it.

Let it also be known that before any modds i could also do 120, it just took a very long time to get there.

your buddy and his zz6 are not a forum of lifetime kz riders...you my friend were not going 140....nor 130....nor....125......we are not a crowd to take claims that we ourselves know the correct answer to lightly no harm just mis percieving the speed you were getting...on a long downhill with a good back wind and some motor work sure......i'm sure it felt like 120 but it wernt





Greaser89 wrote:

Yes i know its sounds like a stretch but believe my I'm not trying to boost my ego or anything like that. I rode next to my buddy who has an 07 zzr6 and we took off on the highway and cruised at highspeeds for a while. Afterwards I asked him what we were doing and he replied that i was keeping up with him at about 140 but not much more. Thats also with no baffles so exhaust breathes alot better at high rpms, and believe it was very high rpms. about 10.5k - 11krpms screaming and smoking. piston rings are about done i think. I would really like to see what I can change and just how fast I can get her to go.

the 750's that do 211 are heavy duty single purpose straightline bikes often...


there have been a few 750's that would do 190 every lap and handle the twisties too....lap after lap..on a single tank of gas....

Greaser 89,

Best advice is to get a SCTA or ECTA rule book before you start working on a land speed bike project.

Listed below are a few of the 2009 Bonneville 750cc records for classes you might end up running.

750cc Production Class - 174.622
750cc A/G - 171.550 (gas class)
750cc A/F - 167.824 (Fuel class)
750cc A/BG- 180.948 (Blown gas with NOS, turbo or blower)
750cc A/BF- 200.624 (Blown fuel with NOS turbo or blower)
750cc APS/G-211.591 (gas, Partially Streamlined)
750cc APS/F-208.614 (Fuel, Partially Streamlined)
750cc APS/BG- 212.404 (Blown gas Partially Streamlined)
750cc APS/BF- 218.956 (Blown Fuel Partially Streamlined)

Good luck and hope to see you on the salt in 2011.

Ron B

WABBMW wrote:

Many GPS units can record a maximum speed. You could carry one in your pocket, with the batteries well charged, and not even have to hook up any wiring to your battery. Perhaps even borrow one from somebody. This would be an easy way to get a very accurate speed.

I have an app on my DROID called My Tracks. I set it before I leave and put it in my pocket. When I am done, I can even upload the route I took to Google Maps.

After the run, it will tell you:
Total Time
Time Moving (takes out stops like gas)
Average speed
Distance
Top Speed (71mph on my morning commute, woo hoo)

Though if it loses GPS signal, it can go wonky. One time my average speed was 140mph. When I looked at the route, I saw that it must have lost signal for a moment and it put me 3 towns over for about 10 seconds. So it factors distance and time to get average speed, as my top speed was still in the 70s.

If I may first reflect on a phrase from one of the greatest poets to ever live………..

“to take something slow and make it fast” Burt Munro

Heres a link to the aussie salt lakes www.dlra.org.au/2007.htm#RESULTS2007
……... I have a bike ready, built it 2 yrs ago for just this thing “dry lake racing” (650 production turbo class) I just need the time off now to go………..maybe next year….


If you want your bike to go “faster” then have a look at fast people on bikes and what they do to there’s.

…………motorcycling is in the blood not in the wallet!…………


records for 750cc class, Australia that is…..

750 Cubic Centimeters (Approx. 45.7 Cubic Inches)
Class Entry Name Rider Year Speed
P/P Paul Powditch 2010 (1994) 167.566 (144.34)
P/*
M/G Bob Prior 2002 (2001) 149.377 (136.330)
M/GB Greg Butler 2000 102.913
M/*
A/*
MPS/BF Kim Krebs 2009 182.43
MPS/PF Stuart Hooper 2009 131.406
MPS/P Max Hooper 2005 103.460
MPS/G Garry Peterson 2010 (2005) 193.694 (155.925)
MPS/BG John Ladbrook 2009 143.815
MPS/*
APS/BF Kim Krebs 2010 188.412
APS/PF Stuart Hooper 2010 139.001
APS/G Phillip Eggleston 2010 127.325
S/*
SC/P Sean Kelly 2010 120.270
SC/*
SCS/*

trianglelaguna wrote:

the 750's that do 211 are heavy duty single purpose straightline bikes often...

Mine was a road bike. It had lights, ran on petrol, was stock wheelbase (+2"), road tyres, started on the button and could easily be ridden to the pub, or anywhere. It also ran 9.2 quarter miles with nothing more than a change of gearing, but that didn't make it a dragbike...

Lorcan wrote:

...but that didn't make it a dragbike...

Nope, just bad ass!

Lorcan wrote:

trianglelaguna wrote:

the 750's that do 211 are heavy duty single purpose straightline bikes often...

Mine was a road bike. It had lights, ran on petrol, was stock wheelbase (+2"), road tyres, started on the button and could easily be ridden to the pub, or anywhere. It also ran 9.2 quarter miles with nothing more than a change of gearing, but that didn't make it a dragbike...

Was? You don't have it anymore?

I sold off some of the parts and am rebuilding the rest into something more "single minded". Not road legal. And hopefully faster...