Author Topic: R4 vs. R5 Cam  (Read 1187 times)

0 Members and 1 Guest are viewing this topic.

Offline Fasted

  • Full Member
  • *
  • Posts: 57
  • 99% done now
R4 vs. R5 Cam
« on: March 11, 2007, 07:42:50 AM »
Can someone tell me the difference between an R4 and a R 5 cam on the CB 750?

ED
1969 Sandcast rebuild!

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,020
  • CB500 Number 1000036
Re: R4 vs. R5 Cam
« Reply #1 on: March 11, 2007, 08:02:51 AM »
Nothing at all its just a casting/machining mark
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline rbirkhan

  • Enthusiast
  • **
  • Posts: 103
Re: R4 vs. R5 Cam
« Reply #2 on: March 11, 2007, 10:07:10 AM »
Get those heads/pistons/cylinders/valves cleaned up I will get you the hone wednesday. I expect you will have all this done asap. Order your cam wheels as you cant reassemble it without them.  ::) getting those pistons back in will be a pita.  I can loan you the porting kit it makes cleaning the ports on the heads a 5 minute deal with the die grinder and the fluff wheels.  I also have some long brushes you can use to clean out the fins before you spray.