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jj1479

1999 yz400f busted cam bracket

34 posts in this topic

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, Joe100_1822.jpg100_1829.jpg

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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.

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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.

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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

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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

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im in the same boat too my cam cap is damaged

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

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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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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+

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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.

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

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

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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?

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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.

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

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img]<blockquote data-ipsQuote="" class="ipsQuote" data-ipsquote-username="grayracer513" data-cite="grayracer513" data-ipsquote-contentapp="forums" data-ipsquote-contenttype="forums" data-ipsquote-contentid="720139" data-ipsquote-contentclass="forums_Topic"><div>The copper "stuff" is more likely CopperKoat gasket sealer.  Don

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

http://i636.photobucket.com/albums/uu88/jj1479/100_1834.jpg' alt='100_1834.jpg'>

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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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