WR400 back from the dead


32 replies to this topic
  • Thommo_400f

Posted January 22, 2015 - 07:53 PM

#21

I hope you put a NEW pilot jet in... it would definitely need one. Also the Pilot-Air-Jet and Main-Air-Jet passages/Jets may be blocked, so the Pilot mixture and vacuum will be wrong.

Also make sure there is a good seal from Carb to Motor with no holes in rubber, any air leak will cause rough running.



  • Qweasy3

Posted January 22, 2015 - 08:22 PM

#22

I hope you put a NEW pilot jet in... it would definitely need one. Also the Pilot-Air-Jet and Main-Air-Jet passages/Jets may be blocked, so the Pilot mixture and vacuum will be wrong.
Also make sure there is a good seal from Carb to Motor with no holes in rubber, any air leak will cause rough running.

new pilot jets on the way, but not installed yet. I have pulled every jet out and made sure no passages or jets are clogged. It does not pop on decel... maybe its too rich? Main jet seems a little lean but the needle seems spot on because it pulls great 1/4-3/4 throttle.

  • Thommo_400f

Posted January 22, 2015 - 08:24 PM

#23

http://www.thumperta...the-fuel-screw/



  • Qweasy3

Posted January 26, 2015 - 08:51 PM

#24

Major setback!

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  • YZX

Posted January 26, 2015 - 09:27 PM

#25

Dude, that sucks man

  • underground-mpyre

Posted January 27, 2015 - 12:30 PM

#26

That really blows! Better you found out now though.



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  • Qweasy3

Posted February 03, 2015 - 07:57 PM

#27

For anybody thats still interested... the project is not dead yet thanks to some jb weld. I flushed out the bottom end with diesel and a couple oil changes.

also fixed several minor oil leaks and sorted out the wiring. Installed the R&D remote fuel screw and now she idles like a champ.

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  • underground-mpyre

Posted February 04, 2015 - 05:43 AM

#28

That is awesome! Hopefully the JB weld holds.



  • Qweasy3

Posted February 04, 2015 - 07:06 AM

#29

It has so far and ive been riding the piss out of it.

  • YZX

Posted February 04, 2015 - 08:26 AM

#30

Looking good man

  • Qweasy3

Posted February 04, 2015 - 08:52 AM

#31

Looking good man

thanks! Any suggestions for a headlight? Oem is pretty expensive..

  • YZX

Posted February 04, 2015 - 07:03 PM

#32

thanks! Any suggestions for a headlight? Oem is pretty expensive..

baja dual sport kit is cheap. its got a good setup too
Or try ebay too

  • Qweasy3

Posted March 26, 2015 - 08:39 PM

#33

There has been some progress over the last month.
New cylinder head
Some LED lights
Oversize front brake rotor
Some new plastic
Lots of oil leaks fixed
New chain and sprockets...

Been having a lot of fun on it. Starts 2-3 kicks usually. Does not smoke at all which is suprising since the rings were all stuck and rusty the first time i took it apart.

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