Author Topic: 350 Crank Pin Size?  (Read 688 times)

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Offline moonpup

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350 Crank Pin Size?
« on: March 21, 2017, 07:27:33 PM »
Would anyone happen to have measurements for the 350 crank pins?  Length & diameter?
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline moonpup

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Re: 350 Crank Pin Size?
« Reply #1 on: March 22, 2017, 05:29:59 PM »
Update: I been informed that they are 24mm x 52.6mm.  8)
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline bert Lilley

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Re: 350 Crank Pin Size?
« Reply #2 on: March 23, 2017, 10:54:45 AM »

  Just Happen to have one on my Desk  :- Pin Diameter = 0.945" in Dia x 25.4 = 24mm dia. 
                                                       
                                                                  Pin Length = 2.072" x 25.4 = 52.6mm Long.

Hope this Helps  Bert

Offline moonpup

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Re: 350 Crank Pin Size?
« Reply #3 on: March 23, 2017, 07:55:13 PM »
Thank you for the confirmation Bert..... and yes, it does help.
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline farmerdl

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Re: 350 Crank Pin Size?
« Reply #4 on: March 25, 2017, 09:24:09 AM »
What information is available regarding the heat treat on these pins? 

Offline OldSwartout

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Re: 350 Crank Pin Size?
« Reply #5 on: March 25, 2017, 12:20:42 PM »
Crank pins are typical bearing journal specs, RC60-62 hardness. They can be relatively soft core, RC30-45 with either a nitrided case that will be .007-.015 deep or carburized which should provide from .020-.050 case depth. With the nitride heat treat, there's not much depth for finish grind after plus the thin case needs a harder core for support.
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline bsracer

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Re: 350 Crank Pin Size?
« Reply #6 on: March 26, 2017, 03:05:50 AM »
I just cut down some 175 pins to use for the crank jig and they were not soft in the center! Amazing how tough those things can be!

paul

 


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