HRC cam

[SLSD400exGUY]

does any one know where i can get a HRC cam for a 05 400ex for a good price?

thanks

[cals400ex]

these cams just aren't cheap. i would call up laz at gt thunder.

[Rico]

Originally posted by cals400ex
these cams just aren't cheap. i would call up laz at gt thunder.

[wilkin250r]

Is the HRC a drop-in, with stock rockers and valvesprings? I figure stock rockers, because it's not a hardweld, but I'm not sure about the valvesprings. Are stiffer springs required or recommened?

[duke416ex]

My understanding is that it is a direct drop in just like the hrc for the 450r.

[Rico]

Drop it in with stock rockers and springs and then go drop the hammer....


It's truly a drop in cam and it kicks some serious butt....:macho

[wilkin250r]

I'm surprised. It's not super-aggressive, but it's pretty radical for the stock springs. I'll have to think about that one. Even though it's expensive, it's much cheaper by itself than a complete package of camshaft, springs, and rockers.

[bwamos]

I'd put stiffer springs in it.

I know the 300ex has really wimpy stock springs.. and you'll get valve bounce if you put in an agressive cam and don't put in heavier springs.

I assume the 400ex is probably the same way since the engines are pretty much the same generation (1990's).

[NacsMXer]

Originally posted by bwamos
I'd put stiffer springs in it.

I know the 300ex has really wimpy stock springs.. and you'll get valve bounce if you put in an agressive cam and don't put in heavier springs.

I assume the 400ex is probably the same way since the engines are pretty much the same generation (1990's).

Nope. With the HRC cam, you should NOT put stiffer valve springs in it. It's a drop-in cam, simple as that. Adding stiffer springs will only lead to premature cam and rocker wear.

[journeyman]

where can i buy one of these from online???

[crazyatvn]

WWW.SERVICEHONDA.COM

[journeyman]

there is no where on the service honda website to order a 400ex hrc cam

[crazyatvn]

hrc cam is for a xr 400

here is the part #
14000-nkk-000

[journeyman]

so the xr 400 cam will fit the 400ex?

[crazyatvn]

yep that is what I got.

[cals400ex]

make sure you don't get the XR400 cam or the HRC copy cam. these are both different from the HRC cam. the HRC is far superior to these, however they all will work in a 400ex. if the price isn't near $300, you probably are looking at the wrong cam.

[Rico]

Originally posted by cals400ex
if the price isn't near $300, you probably are looking at the wrong cam.

I've seen some places retail it for over $400............:eek2: :eek2:

[cals400ex]

Originally posted by Rico
I've seen some places retail it for over $400............:eek2: :eek2:


yeah, that is crazy. i can believe it though. the TC cam that i run sells for $350 without a core. with a core he drops off $150 though. i could probably buy 10 stock cams for that price so didn't have any problem giving him mine. :eek2:

[SLSD400exGUY]

wow ive read about this cam and i think i might get it soon!!

[journeyman]

ok I should be getting my HRC cam for my 2005 400ex this week...im gonna switch to an open box setup....question is do I have to change my jetting????im currently running a 152 main and a 42 pilot, stock needle,and 3turns on the fuel screw

[wilkin250r]

Originally posted by journeyman
question is do I have to change my jetting????

If you have to ask that question, you should not be doing it yourself.

As a general rule, ANY time you make any modifications to the combustion process, whether it is pipe, filter, cam, piston, or even your air box lid, you should re-jet.

[journeyman]

ok what i meant to say was do you have a recommendation for what changes to make???I know I need to change the jetting but thanks for making me feel like captain dumbass anyway

[cals400ex]

alright captain dumbass (j/k :D ), try this out:

i would go up on the mainjet to a 160 or so for starters. this is with that cam and no air box lid. it wouldn't hurt going with a 42 pilot jet either. i would probably run the needle clip in the 4th position from the top too. however, the elevation your at really plays a role.

[journeyman]

ok since the 05 400ex only has once notch on the needle in the carb.......do I need to buy a new needle when installing the hrc cam and going to a open box setup??

[journeyman]

can someone help me on a jetting question??the 05 400 only has 1 notch on the needle..what needle do i need to use with a hrc cam and open airbox along with my other mods???this is the stock 38mm for the 05

[cals400ex]

oh yeah, i forgot they changed that in 05. what number is on the needle?

[journeyman]

the # on the needle is C61A

any help you can give me will be greatly appreciated

[journeyman]

???

[journeyman]

anyone got an answer for me???:(

[cals400ex]

the previous years needle was B44A. i would look up on a keihin site what the numbers mean. you might just be able to leave the stock needle in.

[sandspanker]

I have herd that these cams are discontinued. service honda does not sell them any more.lucky I bought mine a couple of years ago at service honda for 277.11 cheap. it is a drop in cam and works very well.you can do a google serch on the hrc cams.I think that Thousand Oaks in cali might be able to help,they are a hrc dealer.going to be spendy though. Hope that helps with some ????'s