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Oil Filter Flow Direction

13-DFT

By 13-DFT,
in Engines & Forced Induction

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13-DFT Rookie

13-DFT

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hi all, just checking that the direction that oil flows through an oil filter is from the outside to the inside? particularly on an sr20det?

also when running an oil cooler and filter relo kit you would have the lines organised in directions as follows -

from engine to filter, filter to cooler and cooler to engine, correct? cheers

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13-DFT Rookie

13-DFT

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as in, would you have the oil going to the cooler first or the filter first, i don't have an oil temperature gauge but ifi did i would want the cooler first as i would have the sensor attached at the oil filter and would want to know my "cooled" oil temperature, but seeing ahow i don't i thought it might make more sense to have the filter first to keep anything out of as much of the lines as possible. or does it just not matter at all

GeeTR Grand Master

GeeTR

Posted
Posted

Ah right, sorry didn't bother as Dave answered you :laugh:

I think you'll find ppl always run the filter (and a oilstat if being used) before the cooler.

I know what your saying about temp sender location, but the oil eventually ends up in the sump, which is effectively a wet sumps "reservoir" A sender in the sump would give the hottest temp the oil should ever reach; hence why some ppl prefer that location.

Much of a muchness i think.

13-DFT Rookie

13-DFT

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i suppose you really would be wanting to monitor how hot the oil is coming out of the engine not how 'cool' (yet still obviously very hot) it is going back in, i don't know why but i had two mechanics tell me that the oil goes into the centre of the filter first and then out of the outside so i hooked my lines up accordingly, but looking at it now it doesn't really matter i suppose

GeeTR Grand Master

GeeTR

Posted
Posted (edited)

^^ Hrmm all the cars iv worked on have engine oil go into the outer, then out from the center. Time to smack your mechanic :laugh:

EDIT: Found a nice little DIY on SAU HERE for ya.

Any questioning is rendered moot, as you can just have someone keep on eye on both lines, when you crank the car first time; then attach as appropriate.

Edited by GeeTR
STATUS Grand Master

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Posted
Posted
i suppose you really would be wanting to monitor how hot the oil is coming out of the engine not how 'cool' (yet still obviously very hot) it is going back in, i don't know why but i had two mechanics tell me that the oil goes into the centre of the filter first and then out of the outside so i hooked my lines up accordingly, but looking at it now it doesn't really matter i suppose

kick your mech in the balls.... that setup will create flow issues and result in near ZERO oil pressure if it has a thermostat like a GREDDY cooler etc

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