update on 400ex "heavy duty cam chains" a must read

[DISHO1]

i have done some research and found out what the engine builders use as the "heavy duty cam chain" for the 400ex. the cam chain that they sell for $90 to $100 is the crf450 cam chain. the crf450 chain is only $25.68 from service honda. i installed the crf cam chain tonight and it works fine. the timing marks on the cam sprocket line up and the chain fits the cam sprocket just fine. the crf chain has a "U" shape on the top of the side plates and is wider than the stock cam chain. also it has the same "M" markings on the side plates like the stock chain and has the same number of links as the stock chain ( 112 links). the crf450 cam chain is more "heavy duty" than the stock chain. i paid $42.77 for the crf chain, right cover gasket, and shipping. if a engine builder tries to tell you that they are not the same chains think about this, if you where making about a $50 profit from each chain and you might be able to sell 1,000 chains well you do the math. i almost forgot the part number for the crf450 cam chain is 14401-MEB-671.

[Big - D Racing]

Very nice discovery I am looking to buy a heavy duty chn also. I will order one of those chains from service honda. Thanks for saving mesome money.:D

[NoWingNoPrayer]

Wow thats awesome that the CRF chain fits on the trx , if i get a new chain thats what ill do.

but did you see an aftermarket chain too or is this just a educated guess? not to bash your discovery.

[pnut420]

Sounds good to me, people put cr clutches and what not in our quads, so anything is possible.

[bmw500hp]

lol, well thats some pretty good work man! Keep it up! :devil:

[L.Vegas400]

Originally posted by Big - D Racing
Very nice discovery I am looking to buy a heavy duty chn also. I will order one of those chains from service honda. Thanks for saving mesome money.:D
i think you owe him a percetage of the money you saved:devious: :D

[bmw500hp]

L. Vegas

vegas is supposed to be "all that" why do you want to get out of there

[jerry-89-250R]

if this proves too be true you should be ex-rider of the year, you'll get my vote anyway

[Pappy]

damn good info:D

[bmw500hp]

perhaps we will soon see..."heavy duty cam chain liquidation" :D

[GNCC#829]

I guess that I got ripped off then!:(

[TORO1968]

Thanks man!! You just saved a bunch of us a ton of money! :D How'd you figure this out???

-Jordan

^ wonderin the same thing. How do u know its the same as the heavy duty ones the engine builders use???

[Chef]

What about us guys that have had heavy cam chains since long before Honda released the CRF 450?:confused:

[DISHO1]

yes, some of the engine builders were selling a HD cam chain before the crf450 was released. there is another engine that has a cam chain that has the same numbers of links (112) as the stock chain but i do not know which one.

my stock cam chain was streached and in my search for a HD cam chain i called mike at FDO. he told me that the HD chain that pro fab sold was a OEM chain from another engine.

when gabe made some posts of his sparks HD cam chain he noted the the chain was wider than stock, had thicher plates, and had the same "M" markings on the side plates as the stock chain. the "M" mark stand for morse.

the crf450 cam chaim is wider than the stock one, has thicker plates, and has the same "M" markings on the side plate. as far as the sparks HD chain h3ll they could have just removed links from a chain that was longer. there is a tool that will repin the links on cam chains. i think sudco sells one i am not for sure.

pro fab has reviews on here and atv connection of the HD cam chain. the crf450 cam chain has a (U) shape on the thinner outside links and if you look at pic in the reviews at atv connection (enlarge it) of the two chains that someone has in his hands you will notice that the HD chain has the same U shape on the outer thinner links.

the crf450 chain is alot more HD than the stock chain for sure.

[JD400exrider]

Nice Work man. :D

Lets see now :ermm: Where could we send this blood hound next to sniff out the next ..............:eek:

[L.Vegas400]

Originally posted by bmw500hp
L. Vegas

vegas is supposed to be "all that" why do you want to get out of there
there are too many pple here and 90% of them are pure @ss holes. i grew up in the country all my life and vegas was the first populated place i lived in.:confused2 :ermm: :mad: :grr: :cuss: :(
but i guess there is a lot of things to do.(if you have $$$$$)

[JustRace]

This is great info :D

[DISHO1]

Originally posted by JD400exrider
Nice Work man. :D

Lets see now :ermm: Where could we send this blood hound next to sniff out the next ..............:eek:



i think i will look into the HD cylinder head studs that is being sold. the HD studs just might be OEM studs from another engine that is 1mm longer. if someone that has installed the HD studs would post the size of the tap that they used, the size of the studs,and the lenght we might be able to find something out. ;)

[JD400exrider]

He's got his nose down :eek: Lets know what you find

[bmw500hp]

Originally posted by JD400exrider
He's got his nose down

he he he

[QuadTrix6]

this should go in FAQ

Originally posted by QuadTrix6
this should go in FAQ

I put it in the FAQ forum the first day the thread started..;)

Very good info for dam sure...:cool: