Hi There,

You'll find that the bike has more usable power (for a 250) above 5krpm,
I'd be keeping it above that - just in case you need to accelerate away
from someone, and to keep from lugging the motor.

Turbo GS250FW! If you've got the cash, then go for it :P

As for the air-filter, the one in mine has a foam filter around a
plastic cage, and it's supposed to be soaked in oil and squeezed clean.
This is so that fine dust can stick to the oil, and more dust sticks to
that dust - eventually it will restrict flow (as all air filters do),
but you can't clean a paper filter..

If you're feeling adventurous, you could try fitting four small filters
(to each carb intake), or one big (onto the front half of the air box)
filter - but I bet that this will stuff the fueling, and you'll have to
get it tuned/jetted on a dyno/a.f. meeter, or stuff around with needle
positions:

http://www.uniflow.com.au/universal_pod.asp
http://www.showandgo.com.au/per/K&N.htm?K&N_bf.htm~mainFrame

The air filters are VERY important for keeping your motor running good.
Just imagine what one sand grain is going to do to the inside of your
motor!

As john said, the exhaust is not the limiting factor with this bike, I'm
pretty sure (correct me if I'm wrong) that it's the 250cc part :P

You'll have to call around wreckers for a tail light, if you want it to
match. You'll also probably get away with an after-market one (go to the
local bike shop) from a dirt bike or something - no idea about the
legalities :)


Cheers,


Carl

On Thu, 2005-07-14 at 23:51 +0000, casper05james wrote:
> My bike reads 11,500rpm redline, but I read somewhere that they are
> 10% out which makes it 10,350rpm redline.
>
> I am not a speed demon and for that matter am partially afraid of
> riding the bike in the first place!
>
> So they run best at 5000rpm but will they put around town at lower
> rpm's, if so what is the lowest rpm at what speed, will they do
> 60km/h in top gear? I weigh only 50-60kg
>
> I also found on another site that someone ran a dyno test and found
> less than a 5% change by fiting a high flow exhaust system, in NM
> that is. So I won't worry about any fancy exhaust setups.
>
> Does anyone know why they use a oil bathed air filter?
>
> Apart from being incredibly restrictive I can only denote that its
> for catching fine dust particles. Is this a big problem anyway?
>
> My old mower had a similar setup but it's stiring up large amounts of
> dust all of the time.
>
> I will have the exhaust repaired and converted into 4/1 and run a
> single 2" chromed Turbo muffler with silencer @$99 it's cheaper than
> a bike muffler and will offer a softer note!
>
> I also need the rear stop lamp!
>
> Does anybody know what will fit or what I can use for rego purposes?
>
>
>
>
>
> --- In suzuki250fours@..., "John Avis"
> <john_avis@h...> wrote:
> > The GF250 (and presumably the GS250FW) has a 13000 redline.. Like
> many 4
> > cylinder 250s they operate best at higher revs, usually above
> 5000rpm. The
> > gearing encourages riding at higher speeds anyway.
> >
> > I doubt any exhaust changes you make would make a noticable
> difference to
> > power or torque.
> >
> > If I was in your shoes I would ring around every motorcycle wrecker
> in
> > Australia and try and get a second hand exhaust system. Its been a
> while
> > since I looked but I used to see wreckers advertising wrecked
> GS250FW's in
> > the motorcycle trader magazines on occasions.
> >
> > -John Avis
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>