hrc cam specs 400 ex

[sc400ex_rider]

hi does anyone have any cam specs for the 400 ex cam upgrade like the hrc cam xr 400 cam wb cam web cam and someone makes a hrc copy cam. i have the hot cam st 1-2-3 specs just want to compare thx all :)

[Vista Cruiser]

These are the ones I have collected over the years. I have the HRC can and it is awesome.

Lift Duration@.050"Lift
Intake Exhaust Intake Exhaust
stock 400EX .316 .302 234 238
XR400 .326 .321 240 244
HRC .350 .339 254 256
WB All Around .345 .335 240 248
HOT/stg1 .354 .354 244 244
HOT/stg2 .346 .346 254 254
GT Thunder .350 .345 256 256
WB Track .350 .345 256 256
WEB 450/451 .350 .345 256 256
WEB 463/9i .385 .370 272 270
WEB 479 .378 .378 250 250
HOT STG 2 .346 .346 254 254
mega X2 .378 .378 254 254 @.040
mega X6 .402 .385 270 262 @.040

[sc400ex_rider]

dam dude you rock were did you get all this from? i have been looking and emailing without much luck. thx:D

[Vista Cruiser]

I got all that info on this site, cam by cam as people posted their specs. Your welcome.

I got the HRC cam because, first it is Honda. When I put it in I only had to adjust my rockers like .001" from where they were.

Second no hardweld rockers are required.

And Third, which goes back to first, I figure Honda knows how to get the most out of their engines and the HRC seems to be a great blend of torque and high-end HP.

My buddy has a Powroll 440 stroker motor with the big 479 Web cam and my 400 with the HRC and a standard bore 11:1 high compression piston from Namura can still beat him an a drag race across the field every time. And I weight about 20 lbs more than he does.

[sc400ex_rider]

cool thx alot i have been thinking about that setup. i wanted to put in that Namura 11:1 std bore in, it looks trick but i had never heard about them. is that piston cast or forged? how does it look?how long have you had it? any problems? any smoke from the rings? and is the hrc cam loud? i heard the hot cams tick a bit. or do they all do it ? i also feel honda knows how to make a honda run. thx for the great info. robert:)

[Vista Cruiser]

The HRC cam does not tick any more than the stock setup.

As far as the Namura Piston, it looks every bit as good as the standard Honda piston as far as quality goes. No where in the literature that come with the piston does it say whether it is cast or forged.

MMy bike does not smoke at all and I have not hhad any problems with the piston/ring setup what-so-ever. I used a standard Honda Head gasket though, not the one that came with the piston/rings/gasket kit that I ordered. The Honda gasket is metal and the one that comes with is fiber.

While you've got the head off you might want to clean up the casting marks inside the intake and exhaust ports. You can also match up the intake manifold to head fit, mine was way off.

JimR