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Old 01-19-2020, 04:12 PM   #11
rod
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Default Re: Crank oil pan opinions

percent wise, you can always make more gains with a small engine. and a good design oil pan on a 265 will prove more % that a bigger cam.
no dyno proof, but my off-the-shelf Moroso kick-out did make a difference in my 265.

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Old 01-19-2020, 08:18 PM   #12
Ed Wright
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Default Re: Crank oil pan opinions

In my old ‘56 Chevy 265” Jr Stock, in the late ‘60s, I borrowed a friend’s big lathe. My pistons were from Jere Stahl. Forgedtru, extremely lightened. The first crank I had, the counter weights were drilled everywhere. I decided to lower inertia all I could, and loose all the big holes drilled in the edges of the counterweights. Wanted to clean up those edges, hoping to “streamline” them somewhat. My friend who did my balancing also owned the big lathe I used. Our shops had a door between them. I spent part of a Sunday cutting them down on another crank. Smaller diameter of the counterweights = lower inertia.
I new it would likely need some Mallory (Tungston, right?) to balance it. I had no idea how much. LOL
I was almost 22 years old. Typical twenty something, thought I had everything figured out. LOL Boy, did I get a cussing from my balancing guy! It almost bounced off his balancing machine first time he spun it up.
Lower Inertia is worth something. It was faster. Mallory wasn’t cheap, either. Never had that much in a crank at that time. First weekend out, it was worth it. Thought I had hung the moon.
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Old 01-19-2020, 08:23 PM   #13
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Default Re: Crank oil pan opinions

Jere Stahl also put me onto 5W20 oil.
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Old 01-20-2020, 05:44 PM   #14
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Default Re: Crank oil pan opinions

No “Honda rods” any of us was aware of. I had told my crankshaft guy what I was trying to do, and he said I might also think about smaller crank journals, to lower bearing surface speed & save a little more rotating weight. He put me into .060” under bearings. I had never heard of those. Very thick. LOL

Old guys may remember my machinist, and crankshaft wizard: Roy “Goob” Tuller, who drove “The Freight Train” twin engine Top Gas Dragster, out of California? Not sure how many years he drove it. His crankshafts were almost to pretty to hide in an engine. I had a famous machinist! We all called him Goober.
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Old 01-20-2020, 08:23 PM   #15
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Default Re: Crank oil pan opinions

Quote:
Originally Posted by Jim Parsons View Post
Randallthere is a great link about oil pans on the “Speed Talk” web site. It’s rather lengthybut has some great theoretical and real world discussion with recommendations.
Jim Parsons
Can you post the link?
Thank you
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