Autodecompressing cam for WR400?


12 replies to this topic
  • Feral Donkey

Posted August 20, 2009 - 11:14 AM

#1

I searched on here and all over the web and I can't find where to get one or much info on them other than people have them. I just picked up a '99 and the whole thing with the decompression lever is frustrating. Can someone point me in the right direction? I can't afford a 450. If I could afford a 450, I'd already own a 450. I like this bike enough to offset the pain-in-the-butt factor of the kick start. :thumbsup:

  • 123BigcoopDawg576

Posted August 20, 2009 - 11:22 AM

#2

I searched on here and all over the web and I can't find where to get one or much info on them other than people have them.


You clearly didnt search very hard :thumbsup:

You can buy either the 03-05 WR450/YZ450 exhaust cam from any dealer. You will need to look the part number up from the Yamaha website.


Here are the instructions for installing it.

http://www.thumperta...078#post3706078

http://www.thumperta...040#post5378040

  • Feral Donkey

Posted August 20, 2009 - 12:25 PM

#3

You clearly didnt search very hard

Clearly? Nothing is going clearly today. You find something going clearly, you let me know and I'll be all over it.

:thumbsup:

Thanks you very much for the info.

  • 123BigcoopDawg576

Posted August 20, 2009 - 12:27 PM

#4

Thanks you very much for the info.


No problem...BTW I helped rebuild a buddies 426 and I told him about the cam swap. He decided to give it a try and couldnt be happier :thumbsup:

  • Feral Donkey

Posted August 20, 2009 - 12:37 PM

#5

In the link it says that's for a 2000-2002. So I take it, it won't work for a '99?

*edit* I found a great thread! http://www.thumperta...ecompresion cam

All is well! I got a clue now. Thanks!

  • tcmII

Posted August 21, 2009 - 10:12 AM

#6

+1 on 450 cam swap in 400. I did it last year and it has been great. :thumbsup:

I went with the YZ Cam. I got mine on eBay, but I haven't seem any lately.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Feral Donkey

Posted August 22, 2009 - 06:37 AM

#7

I just tried to start mine the other day after work and it told me it didn't like me and wouldn't cooperate. I'm new at owning one of these. I had a heart-attack kick starting session with no luck and I decided the YZF cam is the way to go. :worthy: :thumbsup:

  • ncampion

Posted August 22, 2009 - 07:20 AM

#8

Try it, you'll love it.

  • ZéPovinho

Posted August 22, 2009 - 07:24 AM

#9

I whish I could put a manual decompresser on my '06YZ450...

  • ZéPovinho

Posted August 22, 2009 - 07:33 AM

#10

I also own a WR400'00, and here's wat I do:
http://www.yamaha-mo...troke_vid_a.mpg
http://www.yamaha-mo...troke_vid_b.mpg

maybe your not geting it right?

  • byggd

Posted August 22, 2009 - 03:12 PM

#11

In the link it says that's for a 2000-2002. So I take it, it won't work for a '99?

*edit* I found a great thread! http://www.thumperta...ecompresion cam

All is well! I got a clue now. Thanks!

Hay! That thread looks familiar! :thumbsup:

  • Feral Donkey

Posted August 23, 2009 - 06:50 PM

#12

I think it's starting to like me. It's started right up for me the last 2 days. :ride:

Those instructional videos on how to start the bike are great!

  • 1rkcooper

Posted August 24, 2009 - 08:31 PM

#13

You are going to want a 2003 YZ450 exhaust cam. Check the Thumpertalk store for the cam. If you can't find it give them a call.

At the top of the YZ forums page there is a sticky with common threads, so, so much info in there to read and learn. The very first one is the auto decompression mod. Yes it works on the 400, I have my Wr400 converted. In my opinion it has been the best mod I have done. Follow the instructions and double check everything and you shouldn't have a problem.

At the bottom of the page are two videos from Yamaha that have already been linked above. They may help you out until you get tour cam installed.




 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.