1999 yz400f busted cam bracket


33 replies to this topic
  • jj1479

Posted August 16, 2009 - 05:26 PM

#1

I was told buy the guy that i bought my bike from to post on this site to get some answers.
I was wondering where i can get a cam bracket for my 99 yz400f? I was on my way home today when all of a sudden my bike started acting up an then died. I bought it a little over a month ago and the guy told me that he just put a new timing chain in and well i guess he torked the bolts down too much as it pulled the treads out of the head:foul: and since they worked loose it broke the bracket that holds the front cam down.
Can i put a heli coil in the head or do i have to get another head?

Thanks alot, JoePosted ImagePosted Image

  • grayracer513

Posted August 16, 2009 - 06:09 PM

#2

The threads aren't the problem. The broken cam saddle cap is. They are not replaceable. Contact EDCo to see if they can repair it. If not, you'll need another head.

  • jj1479

Posted August 16, 2009 - 06:24 PM

#3

Ok thanks alot i emailed them and sent them pictures. Is their a decent place to get another head with out spending a ton of money? i've seen prices from $470 used to $948 for a new one.

  • bakeyz426f

Posted August 16, 2009 - 06:34 PM

#4

go to motosport.com i found they have the cheapest oem prices. a head for a yz426f cost 600 something so its probly about the same for a yz400f

  • bakeyz426f

Posted August 16, 2009 - 06:37 PM

#5

im in the same boat too my cam cap is damaged

  • jj1479

Posted August 16, 2009 - 06:42 PM

#6

go to motosport.com i found they have the cheapest oem prices. a head for a yz426f cost 600 something so its probly about the same for a yz400f


Ya i checked they only go back to 2000 model year. Not 1999 like mine. I emailed 7 differnt places so we'll see who gets back to me.
Thanks anyway

  • jj1479

Posted August 16, 2009 - 06:43 PM

#7

im in the same boat too my cam cap is damaged


Ya i saw it after i posted about mine. This sucks.

  • bakeyz426f

Posted August 16, 2009 - 06:43 PM

#8

never mind they dont have parts for that year i just looked

  • bakeyz426f

Posted August 16, 2009 - 06:45 PM

#9

im going to call that repair place tommorow you should too.

  • jj1479

Posted August 16, 2009 - 06:48 PM

#10

im going to call that repair place tommorow you should too.


Ya I already emailed them. Im going to pull the head off tomorrow when i get home from work so if they can fix it i can get it shipped out asap.

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  • bakeyz426f

Posted August 16, 2009 - 06:51 PM

#11

i found a running yz400f motor on ebay for 600 bucks

  • jj1479

Posted August 17, 2009 - 11:35 AM

#12

Well engine dynamics emailed me back this morning and quoted me $200 and 2weeks to get it back so i think I'll be sending it in rather then buying a used one.:thumbsup: :worthy: Plus you never really know what your getting when you buy used. And to me $200 sounds alot better then $400+

  • jj1479

Posted August 17, 2009 - 11:37 AM

#13

i found a running yz400f motor on ebay for 600 bucks

I don't want to buy a whole motor if i don't have to. But it would be nice to have.

  • jj1479

Posted August 17, 2009 - 11:41 AM

#14

im going to call that repair place tommorow you should too.


Did you call them? They told me $200 to get mine fixed.

  • bakeyz426f

Posted August 17, 2009 - 02:22 PM

#15

called them but they couldnt tell me a price so i have to email pics for a rough estimate. what all are they going to do to your head?

  • jj1479

Posted August 17, 2009 - 03:47 PM

#16

called them but they couldnt tell me a price so i have to email pics for a rough estimate. what all are they going to do to your head?


Heres a copy of the email they sent me.

"Hi Joe
Over torqued bolts are a common problem. Your first photo is a little out of focus to see properly but we get the idea. Without having the pieces in hand to inspect, I would have to quote an approx. cost of repair to be $200.00 and about 2 weeks in the shop, depending on when it is received. We would need the head, the cam tower and cam if you have one.
Jenny"

I emailed them back again about what they are all going to do and if they will readjust all the valves for me but no answer yet. I also noticed when i took the intake cam off to get to the head bolt the 2 right side bolts were loose also :thumbsup: . The guy that put this together must not own a tork wrench. And their was alot of that copper stop leak stuff stuck on the water jacket slots in the head gasket so I'll have to check the radiators over.

  • grayracer513

Posted August 17, 2009 - 03:56 PM

#17

The copper "stuff" is more likely CopperKoat gasket sealer. Don't worry about it. Send EDCo both cam caps and all ten bolts.

  • jj1479

Posted August 17, 2009 - 04:12 PM

#18

The copper "stuff" is more likely CopperKoat gasket sealer. Don't worry about it. Send EDCo both cam caps and all ten bolts.


I thought it might be some kind of gasket sealer but their was alot of copper colored "shavings" in the antifreeze when i drained it. Plus the left radiator is smashed in almost 3/4" so i assume it might of had bin leaking I already have the head boxed up and I'm waiting to hear back from them.

I was wondering if you know what these engraving #s mean. The one thats upside down looks like lXF32 and the bottom one is 6JCR40

Posted Image

  • grayracer513

Posted August 17, 2009 - 07:26 PM

#19

They are used at the factory to match parts up as the head is sub-assembled.

  • jj1479

Posted August 29, 2009 - 05:19 PM

#20

How can i tell what the compression ratio on bike is? I called to order a piston kit and the wanted to know if its 12.5:1 compression or 13.5:1.
I have no idea?





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