Author Topic: 750 F cam  (Read 1945 times)

0 Members and 1 Guest are viewing this topic.

Offline boediddly

  • Full Member
  • *
  • Posts: 7
750 F cam
« on: July 31, 2011, 07:50:25 AM »
Sweet! just scored a free cam from 78 f and a chrome valve cover. Already have carbs from a 75 f , ported, cut slides,,velocity stacks and a cycle x ignition. I just dont remember if you can get the valve cover off without taking the engine out  . I think I can but I havent owned a cb in 10 years or so so i thought id ask the pros?

Offline kmb69

  • Master
  • *****
  • Posts: 2,041
Re: 750 F cam
« Reply #1 on: July 31, 2011, 08:09:06 AM »
Engine has to come out for a stock K or F frame.

Online Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
  • *******
  • Posts: 14,932
  • Bought her new 4/75
Re: 750 F cam
« Reply #2 on: July 31, 2011, 08:24:23 AM »
You're good to go if it's an A
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline boediddly

  • Full Member
  • *
  • Posts: 7
Re: 750 F cam
« Reply #3 on: July 31, 2011, 09:13:36 AM »
Cam is already out of the f engine and going into an A with the engine still in the frame. Love my automatic!

Offline tomsweb1

  • '78 CB750A
  • Hot Shot
  • ***
  • Posts: 278
  • '78 CB750A
Re: 750 F cam
« Reply #4 on: August 01, 2011, 09:03:16 PM »
Let us know how it goes! Take some pics and vids if you can!
Present: 1978 CB750A, 1978 CB400A, 1983 Nighthawk 550, 1984 CM250C

Past: 1977 XL100, 1982 KZ1300

Offline Danno

  • Hot Shot
  • ***
  • Posts: 715
  • 74 CB550,75 GL1000,76 KZ400,77 GL1000,73 CB750
Re: 750 F cam
« Reply #5 on: August 06, 2011, 09:55:02 PM »
just a warning honda also lowered the compression ratio on the 750A to promote driveability and if you can't get that cam to Idle low enough you will be fighting the engine every time you stop the 750A was a major engineering triumph of the day and it is full of engineering compromises because it is an automatic with a torque converter

some of these compromises included lowering the torque of the engine so they could make the converter small enough to fit on a bike another would be the fact that it is a wet sump not a dry sump

I am not saying don't do it I am saying you will have to work around these issues  I would advise a cam that you can make idle low enough that the bike does not want to run away from you when stopped and i would highly advise an oil cooler that will work with the bike so you don't kill the converter also remember that converter was not made for increased horse power so lighten the bike as much as you can hopefully that will save it

just some things to think about on your way 
when you own a motorcycle the wife does not have to find you handy she just has to find you