Author Topic: want more speed!!  (Read 3507 times)

Offline jonno007

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want more speed!!
« on: December 12, 2005, 08:24:41 AM »
Anyone got any ideas how to make my 1990 gsf250 go quicker off the mark? :grin:   thought about replacing the carbs with something better but what are better carbs? the ones on it are Mikini or something? does it matter what unleaded fuel I use i.e optimax , super etc?
   any suggestions and rough $$$ estimate appreciated!!

thanks guys! :wink:  :banana:
1990 GSF250 Bandit (GJ74A)

Offline Greg

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want more speed!!
« Reply #1 on: December 12, 2005, 06:55:28 PM »
Check what size sprockets you have on. When I got mine it was 2 or 3 (can't remember exactly) teeth up on the front.  I was suprised the difference going back to stock made.

Offline Red01

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want more speed!!
« Reply #2 on: December 12, 2005, 07:45:34 PM »
Even if your gearing is still stock, the cheapest and most effective way to get more snap out of it is to gear it down a little. You can drop a tooth up front and not usually have to deal with chain length issues. If it's getting time to change the chain & sprockets, you can go up more teeth in the back, but this will require a longer chain if you're going 3 or more teeth.

As a general rule, a one tooth drop up front is approximately equal to a three tooth increase in the rear. Either one will make a noticable difference in how quick the bike is. The tradeoffs are increased rpm at cruise and usually a decrease in top speed.
(If the bike was geared too high from the factory - which is done sometimes to meet emissions or noise requirements by various governments - you can sometimes actually see an increase in top speed when you drop the gearing.)
Paul
2001 GSF1200S
(04/2001-03/2012)
2010 Concours 14ABS
(07/2010-current)


Offline gsxr400 racer

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want more speed!!
« Reply #3 on: December 13, 2005, 09:01:07 PM »
put a gsf400 in it! :stickpoke:
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline billybandit

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« Reply #4 on: December 14, 2005, 03:11:54 PM »
Quote from: "gsxr400 racer"
put a gsf400 in it! :stickpoke:


Wha?!?!? Then it'd weigh more than 300kg and have 2 extra wheels sticking out all over the place. Let alone all the other mess. Bad idea.

Offline gsxr400 racer

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want more speed!!
« Reply #5 on: December 14, 2005, 06:42:47 PM »
:shock: What are you talking about WILLIS? 2 extra wheels? where on gods green earth did that come from? :stop:
1988 gsxr 400 sp (sprint bike)
*  SELLER OF THE 442CC BIG BORE PISTON KIT FOR THE BANDIT 400,GSXR400, GK73 and 76.* And carb kits(orings)too. Email me from here.
has been a wera expert #610 lol

Offline chevsuz12

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« Reply #6 on: December 14, 2005, 07:20:10 PM »
Sell it and buy a used B12.  Probably much cheaper than any significant mods would cost you.
B12 Streetfighter!

Offline interfuse

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« Reply #7 on: December 14, 2005, 09:41:23 PM »
Quote from: "billybandit"

Wha?!?!? Then it'd weigh more than 300kg and have 2 extra wheels sticking out all over the place. Let alone all the other mess. Bad idea.


I think he meant just the motor -- not the whole bike!   :lol:
Mike

'91 GSF400
It's more fun to ride a slow bike fast than a fast bike slow.

Offline PitterB4

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want more speed!!
« Reply #8 on: December 15, 2005, 11:04:43 AM »
:downhill:
Rob
Bikeless!
'93 Bandit 400 - SOLD
'98 Honda F3 Track Bike - SOLD
'98 Kawi ZX-6R Street Bike - SOLD
NESBA #87 - RETIRED
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Offline billybandit

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want more speed!!
« Reply #9 on: December 15, 2005, 06:51:49 PM »
Not if a Bandit 250's involved it's not!!!  :motorsmile:  :grin:  :banana:






 :duh: