Speed Record for the GZ250

[alanmcorcoran]

Chris,

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You photo needs to be small and square. Don't try and load up a 13 megapixel masterpiece. An ex photog should be able to figure that part out.

[goneoutflying]

A GPS is great for places you don't know however they are not always 100% accurate even when updated. Even my GPS got lost in Atlanta. O_o

As for the GZ doing 103 , it probably could but not without blowing the engine shortly after :crash:
I have gone up to 85 MPH and the engine sounds like it is going to rip itself to pieces.

[Easy Rider]

Originally Posted by goneoutflying

Even my GPS got lost in Atlanta. O_o

:haha2: :crackup

On second thought, NOT really funny......having been caught in that maze a few times! :twisted:

[deadman13]

ive hit 72 (speedo, nothing that fancy) once or twice, mostly on a slight grade. i regularly can hit upeer 60's. now what makes this "special", im 6ft 250lbs. bike does just fine. im considering the tike kit just for fun. i did the needle shim mod, drilled 3, 1/2" holes in the exhaust (actually before i heard it was "good" for it) and took the scoop off the filter. seems to run fine, but i do want to make some carb adjustments one day. i just cant seem to find a straight answer on here as to a good jet size...


but i dont see why people cant find the mid/upper 60s more often. i just realized i had so much more top end in the lower gears (would shift a bit early, out of caution).

i love this little bike. best $300 i ever spent

[alanmcorcoran]

I was out today on the freeway on a fairly windless day. I'm not sure exactly how fast I was going but I had it up over the hash mark after the "70" (Do those hash marks mean anything? Is 70 the lower one or the upper one or the number?) More importantly, I had no trouble getting and keeping the bike up to, and a little over, the speed limit (65) which has been a challenge in the past. I actually passed some traffic and had no trouble keeping up with the "slow" lane traffic.

Some speed related details:

My Weight: 172
Windshield: yes, medium to largish
Oil: Rotella conventional 15w40, somewhat overfilled
Mileage: Little north of 2400
Terrain: mostly flat, some slight grades

I experimented with having the "choke" on a little, a little more, and not at all. Didn't seem to make any noticeable difference. Since I got the new oil, I've become a little more aggressive on the shifting - I typically take 4th up to at least 50 now, if not a little higher. Used to shift into 5th at 40.

Not sure if my increased freeway speed is due to less wind, the windshield, "break-in", oil or riding experience. In any case, I feel a lot less pressure when I can go the speed limit.

[Easy Rider]

Originally Posted by deadman13

i just cant seem to find a straight answer on here as to a good jet size...

Get the shop manual and look at the European specs.

BTW, the answer IS on here in at least one thread which has a VERY detailed description of a complete carb. "upgrade".

Given those two sources, what exactly is it that you want ??

[deadman13]

i want the bike to run as well as possible, but thats about it. ive looked before, just never typed jet size in the search box. if you know what a good size would be, care to share easy? youre one of the few id actually listen to...

[Easy Rider]

Originally Posted by deadman13

i want the bike to run as well as possible, but thats about it. ive looked before, just never typed jet size in the search box. if you know what a good size would be, care to share easy? youre one of the few id actually listen to...

No, I don't remember. Sorry.
It may be quicker or easier to just scan the topics for one about rebuilding the carb.

[NoMates]

:cool: I got 75 outta mine on wednesday nite coming home from work, I had a good tail wind on a flat piece of highway and could probly have got 80 if I really wanted to..Yippeeeeeeeeeee.

[tampadeb]

i got mine to 86 2 days ago. did it twice on the courtney campbell causeway. must have been the right temp and everything...i have no gps (i always know where i am and when i am going) hubby said his 750 said i was going 90+ but mine only said 85 with the line on the top.