HRC Cam

[XXXRACER165]

Can anyone find me a HRC cam for my EX thats in good shape? Thanks.

The Hiebster

[drew416ex]

The HRC cams are very expensive. If i could find some specs someone sent me you will see the hotcams stage 1 is almost identical to it. The specs are somewhere on this forum, but i cant remember where to look. I also had a part #, and it was like $400 from yamaha of troy.

[drew416ex]

Here are those cam specs. At the very bottom is the part number for the HRC cam. If you put the number in yamaha of troy's oem parts finder it comes up with the part, but you may have to call or e-mail them and see if they really have it. The old style stage 2 hotcam is really close, it just has a little more lift.

cam: Intake lift; Exhaust lift; Intake duration; Exhaust duration

stock............... .316, .302, 234, 238

XR400.............. .326, .321, 240, 244
HRC................. .350, .339, 254, 256
GT Thunder....... .350, .345, 256, 256
WB Track.......... .350, .345, 256, 256
WB All Around.... .345, .335, 240, 248
WEB 450/451..... .350, .345, 256, 256
WEB 479........... .378, .378, 250, 250
WEB 463/9i....... .385, .370, 272, 270
Hotcams stg 1... .354, .354, 246, 246
Hotcams stg 2... .354, .350, 254, 248
HC stg 2 (old).... .348, .349, 254, 254
Hotcams stroker. .358, .354, 262, 257

Notes:

--Numbers are listed in inches and degrees of crank rotation (lift duration at approximately .050" lift).
--The Hotcams stg 2 old version is identified by "HCDG NO. 08" etched onto the cam--not sure what the current version says.
--White Brothers All Around is etched with "WB1870".
--White Brothers Track is etched with "WB1498".
--Notice that the WEB 450/451, GT Thunder, and WB Track are all the same grind.
--Honda part number for the HRC cam (it's actually an XR400 HRC cam) is 14000-NKK-000. I don't think they are still available from Honda.