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Post by STROMI 121 on Feb 25, 2015 23:06:46 GMT -5
What do you run? Looking to get one. After looking at summit, speedway, jegs, and ebay I now know less than I thought I knew. I don't want to restrict the oil flow and change the oil pressure so Im leaning towards one with 1/2 in and out fittings. However I have never ran one that's why I am looking for imput on the subject.
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Post by redneckracing12 on Feb 26, 2015 1:13:56 GMT -5
Going to be doing my first oil cooler setup for a derby car in the next week, plan is to use 1/2 id hydraulic hose with a adapter at the block instead of a sandwich setup ( i run a ford and the oil filter is always in the road) and mount the filter on the side of my trans/oil/fuel cooler. Going to try and avoid using any 90 degree fittings to help eliminate pressure drop. For the pluming side of things i will be using bulkheads at the box and run two short hoses from the cooler to the side of the box then my long ones from box to motor, going to do trans the same way. I know some guys prefer a fan setup but I will be using a water/ice combo. The box will hold 28 gal of ice/water and will be more than enough for our shows around here.
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Post by derbydude on Feb 27, 2015 20:08:05 GMT -5
I have been questioning if/when an oil cooler is necessary. I would start by installing an oil temp gauge in the pan to see what the oil temps are. The closest consensus I have seen is that you want your oil at least to 212 to keep moisture out of the oil and that an oil cooler is not necessary unless your temps are staying around 250 or greater. For derby purposes, if I lose my radiator I don't know that an oil cooler will keep the engine running substantially longer. I also theorize that cooler oil circulating back through an overheating engine may actually do more harm than good.
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Post by STROMI 121 on Feb 27, 2015 21:42:53 GMT -5
Its a good question, that's why I started this thread. I would love to hear more opinions and theory's on the subject. I was just thinking that if the oil was kept cooler it would help keep the engine cooler. Maybe not. IDK?
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Post by stagman33 on Feb 27, 2015 22:25:06 GMT -5
I was gonna run one thinking that it would offer some cooling effect that might keep the engine going for just a little longer. Also assumed that when an engine is super heated due to no radiator that it would contribute to a breakdown of the oil which could cause it to seize also. I would think you would get the most benefit out of an oil cooler if you had the piston cooling jets.
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Post by stagman33 on Feb 27, 2015 22:26:28 GMT -5
I planned to run an electric fan on mine and not turn it on til I lost the radiator.
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Post by STROMI 121 on Feb 27, 2015 22:57:04 GMT -5
I was going to use an electric fan as well. I don't understand how cooling the oil down some could be a bad thing, but I am not an engine builder or engineer.
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Post by redneckracing12 on Feb 27, 2015 23:26:58 GMT -5
I have been questioning if/when an oil cooler is necessary. I would start by installing an oil temp gauge in the pan to see what the oil temps are. The closest consensus I have seen is that you want your oil at least to 212 to keep moisture out of the oil and that an oil cooler is not necessary unless your temps are staying around 250 or greater. For derby purposes, if I lose my radiator I don't know that an oil cooler will keep the engine running substantially longer. I also theorize that cooler oil circulating back through an overheating engine may actually do more harm than good. The condinsation inside the motor don't really apply to use since our oil is changed every derby or two. Atleast mine is anyways. I also don't run a radiator, just loop the line's and go, iv had the oil way past it's break down point many times and if I can cool it 20 degrees or more I'm golden. |
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Post by STROMI 121 on Feb 27, 2015 23:32:13 GMT -5
Ive been told by one engine builder it is a bad idea. But Im still not sure what the reason is. Hell, it might be a horrible idea. IDK?
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Post by seventyonehemicuda on Feb 28, 2015 0:39:22 GMT -5
what about a remote oil pump like a electric scavenge pump circulating oil through a cooler? once the engine gets really warm, you could just flip a switch to kick in a secondary oil cooler, have lines to and from the oil pan?
or something as simple as welding some cooling fins on the oil pan? just a thought.
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Post by redneckracing12 on Feb 28, 2015 1:18:50 GMT -5
Im waiting for someone to start running a dry sump setup like the roundy round guys are doing. Iv though about it but the initial cost is a good bit.
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Post by stagman33 on Feb 28, 2015 9:21:15 GMT -5
I was thinking of something similar to a dry sump to add oil capacity which would help the keep oil Temps down, but instead just having an extra reservoir. Just didn't know if you could avoid flooding the oil pan without using an expensive dry sump oil pump. I figured with oil temp under control you could run lighter oil which would create less drag on the crankshaft. A very knowledgeable person on here has brought up the fact that the heavy oil creates a lot of windage or drag on the crank. I know my junkyard engine can use any benefit of lower power loss it can get.
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Post by redneckracing12 on Feb 28, 2015 15:09:47 GMT -5
I was thinking of something similar to a dry sump to add oil capacity which would help the keep oil Temps down, but instead just having an extra reservoir. Just didn't know if you could avoid flooding the oil pan without using an expensive dry sump oil pump. I figured with oil temp under control you could run lighter oil which would create less drag on the crankshaft. A very knowledgeable person on here has brought up the fact that the heavy oil creates a lot of windage or drag on the crank. I know my junkyard engine can use any benefit of lower power loss it can get. For drag racing I'll agree that reduction in windage is necessary to squeeze even ounce of power out of the engine but a typical derby engine has a pretty conservative tune on it to reduce the risk of detonation and to help it stay and start again once screaming hot. With that being said there's plenty of power left on the table that's easier to get than doing a windage tray and crank scrapper. I personally run heavy oil. One other thing to consider is bearing clearances, this will pretty much tell you what weight oil you need to run. |
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68X
Heat Winner
Posts: 419
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Post by 68X on Feb 28, 2015 18:03:43 GMT -5
An oil cooler adds more fittings that can potentially leak. I would rather have my engine run a little hotter than potentially having a seal fail mid-derby.
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FORNEY00
Heat Winner
I'm huge in Japan...
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Post by FORNEY00 on Mar 4, 2015 23:34:35 GMT -5
Lighter weight oils today have less zinc and moly in them than they used to. That's why the heavy oil (diesel engine oil) is my preference. I have also thought about running an oil cooler, but that's about as far as it got! lol As far as more fittings/leaks-quality fittings/lines and a dedicated "bolt check" before each derby would eliminate any worry of potential leaks.
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