1998 Yamaha yzf450


16 replies to this topic
  • blanc

Posted May 08, 2006 - 04:13 PM

#1

Hi All,

I am a play rider, i ride mx practice, field and woods, I usually ride a 03 crf450. However i bought a new house so sold it 2years later (at a profit!) and bought a 1998 yamaha yzf400, (the white one).

I picked it up sat and rode it for the first time sunday, while hungover (im irish) lol! In a grasstrack race. I found it very heavy, less powerfull, huge engine braking, didnt turn and was top heavy, I WAS FASTER ON THIS BIKE THAN ANY BIKE I HAVE EVER RIDDEN...WHY?? I love this bike.

Heres what I am looking to do,
I need advise on how to make her turn better.
Where I can get parts, secondhand or good value etc???
Looking for frame guards and graphics.
Any other tips and advise for maintanience and setup etc!
Im 5 102 and 170 pounds

Cheers




Thanks all

  • kid on a 426

Posted May 08, 2006 - 05:42 PM

#2

Hi All,
I am a play rider, i ride mx practice, field and woods, I usually ride a 03 crf450. However i bought a new house so sold it 2years later (at a profit!)


Wow you sound suprised. Houses around here were purchased for about 300,000 ten years ago and are now selling for 1,200,000

I found it very heavy

Sorry can't really fix that much

less powerfull

fairly simple fix

huge engine braking,

Slipper clutch

didnt turn and was top heavy

03 plastics will fix that,

I WAS FASTER ON THIS BIKE THAN ANY BIKE I HAVE EVER RIDDEN...WHY?? I love this bike

Simple, Its a YAMAHA



Where I can get parts, secondhand or good value etc???

EBAY

Any other tips and advise for maintanience and setup etc!

Clean oil, air filters, oil filters, and it will tick forever.

  • Yami_rider

Posted May 08, 2006 - 08:22 PM

#3

A simple fix to help it turn is to move the forks up a bit ( just a few millimeters)

  • blanc

Posted May 10, 2006 - 03:13 PM

#4

Thanks for the replys, I meant the bike not the house, Im an estate agent. I bought the honda with a blown motor for 2k with all new engine parts, i sold it for 3k two years later.

Are there many people still using this bike for racing? I am thinking of doing hare and hounds like gnccs, what mods can i do to stop her stalling in the woods/
Cheers

  • MN_Kevin

Posted May 10, 2006 - 06:08 PM

#5

There is the Taffy Mod or my own KL Mod for the accelerator pump. The BK mod did not apply to the early FCR carbs.

I went to a 420 Big Bore kit, via Eric Gorr, on my WR.

I know there are lowering kits for radiators, but now days, our early YZF / WRF's are considered dinasaurs, and aftermarket stuff is fading into oblivion.

  • One Louder

Posted May 10, 2006 - 09:40 PM

#6

Thanks for the replys, I meant the bike not the house, Im an estate agent. I bought the honda with a blown motor for 2k with all new engine parts, i sold it for 3k two years later.

Are there many people still using this bike for racing? I am thinking of doing hare and hounds like gnccs, what mods can i do to stop her stalling in the woods/
Cheers

1. Get a flywheel weight
2. Use a smaller front or bigger rear sprocket (I run a 13/29 combo)
3. Turn the idle up a bit

It will do wonders for this bike :ride:

  • 426_Texan

Posted May 10, 2006 - 11:30 PM

#7

1. Get a flywheel weight
2. Use a smaller front or bigger rear sprocket (I run a 13/29 combo)
3. Turn the idle up a bit

It will do wonders for this bike :ride:



I'm hoping you meant 13/49 combo? :banana:

  • kylwk1500

Posted May 11, 2006 - 03:52 PM

#8

I do the same type of riding that you do on a yz 400. A great bike. I would definatly recomend a flywheel weight. Maybe zip-ty racing. I also retro fit a wr coolant overflow tank on mine. It did wonders for catching that runoff. And was an easy install

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  • txthumper

Posted May 11, 2006 - 04:28 PM

#9

I'm hoping you meant 13/49 combo? :ride:

maybe he is trying for a new speed record :banana:

  • One Louder

Posted May 11, 2006 - 07:13 PM

#10

I'm hoping you meant 13/49 combo? :ride:

No man I love to get this bike up to 170 mph :banana:

  • Butta

Posted May 12, 2006 - 03:41 PM

#11

I do the same type of riding that you do on a yz 400. A great bike. I would definatly recomend a flywheel weight. Maybe zip-ty racing. I also retro fit a wr coolant overflow tank on mine. It did wonders for catching that runoff. And was an easy install



No reason to install one of these unless you're on the surface of the sun and love to let the bike idle....just get a 1.6 radiator cap inplace of the 1.1 that comes stock. KX500 cap works great. I never lost a drop in my WR after I did that.

  • kid on a 426

Posted May 12, 2006 - 04:55 PM

#12

Dude WR bikes come stock with a catch tank you can't lose fluid

  • MN_Kevin

Posted May 12, 2006 - 05:27 PM

#13

Dude WR bikes come stock with a catch tank you can't lose fluid


[COLOR=Red]>> ...and bought a 1998 yamaha yzf400, (the white one)[/COLOR]

  • blanc

Posted May 13, 2006 - 02:50 AM

#14

Thats it PA you tell them...lol, thanks for all the replys.
I have just bought new graphics, seat cover, wheel bearings and a clutch cable, waiting for them to arrive. I think I will go with a fww also. Just to see how I get on. Should I replace the piston and rings just to be safe?

  • MN_Kevin

Posted May 13, 2006 - 06:48 AM

#15

Yes, I would tear down the top end.

Check valve clearances first.
Write down your gaps, and upon disassembly, keep the bucket w/ it's shim. You will need to use the table to get the correct (new) shim if needed. Be sure the bucket and shim get back to the specific valve if came from.

Then, go ahead and check the cylinder & piston.

It is alot easier and cheaper to do this now, than wait for a catastrophic failure to force you to do it later. :ride:

  • kid on a 426

Posted May 13, 2006 - 11:04 AM

#16

[COLOR=Red]>> ...and bought a 1998 yamaha yzf400, (the white one)[/COLOR]

I was talking to BUTTA the guy that was above me in my last post. He said after he put the radiator cap on his WR that he never lost anymore coolant. WR's can't lose coolant due to their catch tanks so I was trying to point out politely that they can't lose coolant but I guess some people didn't understand.

  • Butta

Posted May 13, 2006 - 09:41 PM

#17

I was talking to BUTTA the guy that was above me in my last post. He said after he put the radiator cap on his WR that he never lost anymore coolant. WR's can't lose coolant due to their catch tanks so I was trying to point out politely that they can't lose coolant but I guess some people didn't understand.



Yes, and I removed my "catch bottle" from my WR to make it more YZ like, therefore not losing any coolant was a success due to the change in radiator cap. Sorry for not spelling it out, some people need pictures drawn, I guess......

:ride:





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