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09-01-2019, 10:07 PM | #1 |
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Oil Level
What have you guys seen in ET and MPH in stock dropping the oil level for lets say a heads up run? And how much oil did you take out?
Last edited by HP HUNTER; 09-01-2019 at 10:12 PM. |
09-02-2019, 08:35 AM | #2 |
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Re: Oil Level
accumulator
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09-02-2019, 11:07 AM | #3 |
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Re: Oil Level
Nothing and I dropped a QT. out....
I Tried it on my 350 Nova Stocker 20+ years ago... and I know a couple guys who hurt bottom ends trying it....
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Rich Biebel S/C 1479 Last edited by Rich Biebel; 09-02-2019 at 11:10 AM. |
09-02-2019, 11:42 AM | #4 |
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Re: Oil Level
Very interesting question!
Keeping the oil away from the spinning crankshaft makes sense, but wouldn't you want to do that all the time? With the technology available today a baffled deep-sump pan with a windage tray and/or a crank scraper should be easy enough to fit. A 6-quart pan would allow you to run the 5 quarts you need, and keep the motor happy. I also wonder if anyone has seen a significant improvement in performance with a high volume versus standard volume pump or their high pressure versions? I've also heard of folks using the "0 weight" oil as a way to "free up" some horsepower!
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Lew Silverman #2070 "The Wagon Master" N/SA |
09-02-2019, 12:10 PM | #5 |
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Re: Oil Level
I also tried some 0 weight Royal Purple oil in my LT-1 EFI Firebird...for one race weekend....
Mostly what I saw was oil pressure dropping lower than I cared for at low engine rpm. I Dumped that oil after 1 race and went back to Mobil 1 5-30 that worked well and was faster than any oil I used before....and maintained good pressure. I used pretty std oil pumps in the Stockers I had.... Neither car was fast but both easily ran below their indexes without spending a fortune....
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Rich Biebel S/C 1479 |
09-02-2019, 12:34 PM | #6 |
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Re: Oil Level
Heres my situation.
The previous owner of this particular car ran 10-30 Valvoline syn oil at a certain level, can't remember if it was 4 or 5 quarts total, but I never saw the oil pressure fluctuate during a run. I went through the engine and was running a 30 W break-in oil at the same 4-5 quarts, now with my engine and oil I noticed the oil pressure dropping the middle of the run, then come back up during the end of the run. My thoughts were the 30w oil couldn't drain back as easy as the 10-30 syn oil. So I pulled the engine out to have a look, the bearings were ok despite the oil pressure drop, so I stretched the pan for more capacity and was able to get 6 quarts in there while maintaining the same oil level to crank as the old pan set up. I put it all back together exactly as it was the first time, but I've lost .10-.15 in the 1320. Is it possible the lack of oil in the engine was the reason the car was so much quicker the first time around? On the dyno, oil pressure was never a problem due to the short duration of the pull. |
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