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Re: chamfered bearings???? [Re: JohnRR] #1720481 01/08/15 01:48 PM 01/08/15 01:48 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	NASCAR rod bearings are generally 1.850, at least from the used parts I see on the 'bay. I believe they're running mains with 2.30" dia, 283 chevy size, but not so sure about that. 9000+ rpm. R.

Re: chamfered bearings???? [Re: sixty7gtx] #1720482 01/08/15 04:08 PM 01/08/15 04:08 PM
Joined: Jan 2004 Posts: 8,353 fredericksburg,va C cudaman1969 master
cudaman1969 master C Joined: Jan 2004 Posts: 8,353 fredericksburg,va	Quote: Quote: Quote: Last i checked the s/s Hemis are running Mercedes, maybe Honda, bearings, very small and narrow. It would depend on the rod-piston weight-rpm plus good oil film. I would never worry about chamfered bearings Thank you for your message!!!!!!!! I take care of my Engine. Never beat on it. I have approx. 1000 miles on my motor. I put brad penn oil in it. What do you think of synthetic oil??? Synthetic oil as it gets older goes to the higher viscosity, reg oil goes to the lower(10w30). I add the STP zink to my older diesel Mercedes, Dakota gets 0w30 syn, Mobil diesel oil for the cummins. Mustang GT 500 uses 0w50. Was running Mobil 1 in race car,might change?

Re: chamfered bearings???? [Re: ahy] #1720483 01/08/15 06:53 PM 01/08/15 06:53 PM
Joined: Jan 2008 Posts: 894 Connecticut, USA sixty7gtx OP super stock
sixty7gtx OP super stock Joined: Jan 2008 Posts: 894 Connecticut, USA	Quote: Quote: Here is one more. Do chamfered bearings have a shorter life? The radius in the crank makes it stronger (fatigue strength)... the chamfered bearing has a small reduction in effective bearing area which (in theory) could result in a small reduction in bearing life. In practice, I wouldn't think it is noticeable or meaningful. A very small tradeoff to get a stronger longer lasting crank. Thank you for your thoughts... 1967 Plymouth GTX, 1968 HEMI, 4 Spd. Super Bee, 2010 Chrysler 300 Touring, MOPAR = Machines Of Performance And Racing!!

Re: chamfered bearings???? [Re: sixty7gtx] #1720484 01/10/15 05:08 PM 01/10/15 05:08 PM
Joined: Jan 2008 Posts: 894 Connecticut, USA sixty7gtx OP super stock
sixty7gtx OP super stock Joined: Jan 2008 Posts: 894 Connecticut, USA	. 1967 Plymouth GTX, 1968 HEMI, 4 Spd. Super Bee, 2010 Chrysler 300 Touring, MOPAR = Machines Of Performance And Racing!!

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