Author Topic: Cam pin  (Read 808 times)

0 Members and 1 Guest are viewing this topic.

64PI

  • Full Member
  • ***
  • Posts: 113
    • View Profile
Cam pin
« on: April 29, 2023, 03:55:58 PM »
Iā€™m looking for a source for a 1.5ā€x .312ā€ cam pin. Or .312ā€ cam pin stock that I can cut to length.

Thanks,
Fred

3goats

  • Newbie
  • *
  • Posts: 2
    • View Profile
Re: Cam pin
« Reply #1 on: April 30, 2023, 10:19:50 AM »
I ordered 2-3 cam pins from Mcmaster and they came back different from the advertised size and were too loose. I got what I needed at a machine shop.

jayb

  • Administrator
  • Hero Member
  • *****
  • Posts: 7426
    • View Profile
    • FE Power
Re: Cam pin
« Reply #2 on: April 30, 2023, 12:12:33 PM »
Unfortunately the cam pin sizes for different cams are all over the map.  Along with my timing cover I used to supply a 3/16" diameter pin, 1.5" length, with a 10-32 hole in the middle so that it was easier to pull out.  I was getting them from McMaster Carr.  They were all in spec, but a lot of the cams had a hole that was slightly smaller in diameter for some reason, at least according to my customers.  So I quit supplying those pins.

I would try McMaster Carr anyway, because the pins are pretty cheap, but don't be surprised if you have to slightly enlarge the pin hole in the cam.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

64PI

  • Full Member
  • ***
  • Posts: 113
    • View Profile
Re: Cam pin
« Reply #3 on: May 01, 2023, 01:08:15 PM »
Jay, which dowel pin material were you buying from McMaster? I'm looking at the 4140 16,000 lb breaking strength. Or there is M2 tool steel. Not sure which would be better. I'd hate to pick the wrong material and shear a pin.

Fred

pbf777

  • Hero Member
  • *****
  • Posts: 506
    • View Profile
Re: Cam pin
« Reply #4 on: May 01, 2023, 02:19:43 PM »
     It seems most of these pins as specified by the O.E.M.'s are quite malleable and I would probably agree with this intent.   :)

     Scott.

frnkeore

  • Hero Member
  • *****
  • Posts: 1146
    • View Profile
Re: Cam pin
« Reply #5 on: May 01, 2023, 04:02:45 PM »
The 4140 are plenty strong.

Look for "pull" dowel pins. They have a internal thread, at one end, that allows you to screw a slide hammer, into them, to pull the dowel out.
« Last Edit: May 02, 2023, 02:04:37 AM by frnkeore »
Frank

jayb

  • Administrator
  • Hero Member
  • *****
  • Posts: 7426
    • View Profile
    • FE Power
Re: Cam pin
« Reply #6 on: May 01, 2023, 08:25:01 PM »
The ones I used were stainless, see the link below.  Bear in mind that the torque on the cam bolt is what really is supposed to hold the gear to the cam, not so much the pin. 

https://www.mcmaster.com/products/dowel-pins/pull-out-dowel-pins-6/diameter~3-16/
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC