Decompression Block-Off 99 400F


7 replies to this topic
  • MDS55

Posted March 04, 2009 - 06:38 AM

#1

I have a decompression cam for me YZ 400F. Does anyone know of an after market block off kit to replace the decomp parts in the head?

  • flyer05

Posted March 04, 2009 - 06:58 AM

#2

Somebody sells a plug for it on E-bay.

  • grayracer513

Posted March 04, 2009 - 07:32 AM

#3

18mm expansion plug (freeze plug) from an auto parts store. $1

  • MDS55

Posted March 04, 2009 - 07:36 AM

#4

18mm expansion plug (freeze plug) from an auto parts store. $1

Great idea, thanks.

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  • aj_yz426

Posted March 04, 2009 - 09:43 AM

#5

Went to my local Autozone first- guys there didn't know what a freeze plug was and couldn't find in the computer since it is set up to search by year/auto make/model.

Went to NAPA alittle further away and they had them for 0.69 cents-steel only, but I'm not sure it makes a difference (brass or steel). I bought 4 since you may mess them up installing.

This is how I did it (found in another thread from Grayracer):
http://members.cox.n...ess plug_sm.jpg

You might be able to fit a C clamp in there and press it in that way? Otherwise remove right radiator and get a straight shot with hammer and socket.

Use red locktight on the plug. The plugs come in flat, shallow and deep. I think I got the deep cup shape which is not that deep-about 4-5mm deep if I remember right. Drive it in until the lip is flush with the surface of the cylinder head or it bottoms out.

  • Birdy426

Posted March 04, 2009 - 04:59 PM

#6

Marv-
Way to go, buddy...welcome to the 21st century!

You can find a plug on e-Bay if you don't want to go the freeze plug route.

  • MDS55

Posted March 04, 2009 - 05:48 PM

#7

Marv-
Way to go, buddy...welcome to the 21st century!

You can find a plug on e-Bay if you don't want to go the freeze plug route.

When we going riding..................This century or any other.

  • Tucker99

Posted June 14, 2010 - 11:05 AM

#8

Just ordered it on e-bay, thanks guys!!!





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