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New engine build what weight of Oil.
#691703
05/07/10 07:19 PM
05/07/10 07:19 PM
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Joined: Mar 2008
Posts: 724 PA USA
flatiron
OP
super stock
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OP
super stock
Joined: Mar 2008
Posts: 724
PA USA
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Hopefully be putting my new 360 in on Monday what weight of Oil should I use for break in and regular running. Here are some spec's 360 .030 over crank ground .01/.01 stock rods/Arp bolts Main brg clearence .0025 Rod brg clearence .0015 end play .004 I'm alittle bit concerned about the mains. When the crank was reground it was taken to the low
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Re: New engine build what weight of Oil.
[Re: Twostick]
#691708
05/07/10 11:23 PM
05/07/10 11:23 PM
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Joined: Dec 2009
Posts: 1,074 detroit, mi
POS Dakota
super stock
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super stock
Joined: Dec 2009
Posts: 1,074
detroit, mi
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Quote:
15w40 Rotella, Delvac or Delo 400 has enough zinc in it (not as much as it used to but enough. 11-1200ppm IIRC. used to have 1600) and you can get it at any Walmart cheap. Have someone turn the engine over with a bar while you watch the lifters to make sure they ALL rotate in their bores. Replace any that don't turn. If the motor is all buttoned up, unbutton it and verify they turn. If you fire it and one isn't turning your cam will be flat in about 10 seconds and it will do it no matter what kind of oil you had in it.
Kevin
This is quite possibly the biggest reason for failed flat tappet cams that people overlook. Lifter Rotation.
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