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Engine Oil Flow Rate ???????
- mikespeed35
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Mike Huffman
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- Terry Cockerell
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My engine had been converted to modern shell bearings for the big end bearings back in the 1950s. The timing chain was so loose that I could have tied a knot in it yet it ran extremely well with good oil pressure. The main babbit bearings were fragmenting. The crankshaft was in excellent condition and was ground to suit a completely new set of bearings. A n engine reconditioning friend with an incredible amount of experience has made the new main bearings and will finish the new camshaft bearings soon. My mate has been involved with reconditioning all types of engines as well as racing engines. He has made connecting rods for drag cars ete etc. I will discuss the crankshaft hardness issue with him tomorrow.
I discussed the crankshaft hardness issue with my engine reconditioner and his comments were there should not be any problems as the oil is being properly filtered.
Babbit bearings being soft will absorb minute particles. The particles are held against the crankshaft journals by the white metal over time these particles will score the journal which was exactly what had happened to my engine main bearing journals. The three leaded bronze main bearings when fitted did not require line boring just some hand scraping.
T cockerell
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- JIM.OBRIEN
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I would be very careful using the leaded bronze in the bearings instead of babbit. The crankshafts are not hardened. People that have gone to inserts on the crankshafts have found that the crank wears very quickly and results in large clearances and reduced oil pressure. I'm not sure how the leaded bronze will work, I would have to do a lot more research.
To me the biggest benefit of the full flow oil filter is to allow you to run a modern detergent oil in the engine.
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- 1748 S
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Gary Parsons
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- Terry Cockerell
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It can flake off and clog up the oil pick up etc
On pictures of GYLPTAL paint cans it says Insulating.
I would do a lot more research before using or recommending this product.
T cockerell
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- 1748 S
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Gary Parsons
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- Terry Cockerell
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T cockerell
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- Terry Cockerell
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I have written up an article on a step by step basis but it is too long for the newsletter. It needs to be condensed for general reading. I have sort of slowed down on newsletter articles after winning the Fred Benson twice, I later found out that a person can only win it once! I will send you a copy and Shannon the condensed version.
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- JIM.OBRIEN
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Why don't you write this up for the Newsletter. I did this conversion years ago on my sedan but I set the block up in my milling machine to drill the hole. I was too chicken to try and do it with a hand drill. I'm planning on doing it again as I rebuild my phaeton engine.
Jim
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- Terry Cockerell
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Last night I had a look in Google for information on positive displacement gear pumps and found a simple formula.
Swept Volume = 3.1416/4 ( Do X Do - D1 X D1 ) L
Where Do is the outside diameter of the pump gears and D1 is the root diameter of the gears and L is the gear length.
Consequently the Swept Volume of a Cord V8 oil pump is 1.3 cubic inches per revolution of the pump
Considering crankshaft speed the pumping rate is 1.3/2 X RPM cubic inches /m
Working with this information the filtration engineer made a selection for me of a modern filter element that will fit inside the Bypass filter canister that was mounted on the firewall. I am now modifying the inlet and outlet plus increasing the oil supply tube size inside the canister to cope with the increased flow rate.
( I hope I have not made any spelling mistakes)
Cheers,
Terry
PS I will have to add some pictures soon.
T cockerell
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- mikespeed35
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- Terry Cockerell
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I need to get a figure on the engine oil flow rate in order to select a suitable filter.
Would anybody out there know what the flow rate is???????
Thanks,
Terry Cockerell
Australia
T cockerell
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