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Old 01-16-2016, 09:36 PM   #1 (permalink)
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Default turbo oil feed questions

Does any one know if the ebay oil feed lines are 3 an or 4 an? You guys know the lines that look like this I believe they have one end that is 1/8npt and another that is 4an.

My next question is, I am using a adaptor from the oil sensor port on the block to the oil feed line. The adaptor has what looks to be a 2mm opening inside of it. Would this cause a restriction of oil to the turbo?
Thanks for any imput.
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Old 01-16-2016, 10:47 PM   #2 (permalink)
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I believe most common is -4 an but you should be able to find any size and length you need on ebay. What type of turbo are you running, oil or water cooled? If it's water cooled you need a restrictor to reduce oil pressure to the turbo.
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Old 01-17-2016, 12:19 AM   #3 (permalink)
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Quote:
Originally Posted by b20vtec View Post
Does any one know if the ebay oil feed lines are 3 an or 4 an? You guys know the lines that look like this I believe they have one end that is 1/8npt and another that is 4an.

My next question is, I am using a adaptor from the oil sensor port on the block to the oil feed line. The adaptor has what looks to be a 2mm opening inside of it. Would this cause a restriction of oil to the turbo?
Thanks for any imput.
if anything -4 is too large without a restrictor. im running 3/16 line and that will be more than plenty for my turbo setup. your oil flow is dictated by your smallest fitting/hose in the run.

Some have gotten lucky running -4 and nothing else, others swear by .030 restrictors. I havent been lucky with straight 1/4 hose and fittings and depending on how large that 1/8 fitting ID is it may be larger than the hose meaning you might need a screw in restrictor like this> Cxracing GT25 GT28 GT35 T25 Copper Turbo AN4 Oil Feed Restrictor Fitting Inlet | eBay

Assuming your using an ebay turbo setup i would try it without a restrictor first and if you seem to be getting oil blown past the seals, throw a restrictor in there.
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Last edited by cervan; 01-17-2016 at 12:24 AM.
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Old 01-17-2016, 07:45 AM   #4 (permalink)
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How about you ask you the seller. If they dont know then dont but from them.

The best thing to get tho is an an fitting to ntp and some brake lines
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Old 01-17-2016, 10:06 AM   #5 (permalink)
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I actually already have the line on my car going to a oil pressure gauge. I have had it laying around my garage for a couple years, it came from one of those generic ebay turbo kits. So I have no idea who the seller is. Is there a way to measure it to see what -an its close to? Also would my 1/8 bspt adaptor to 1/8 npt cause an oil restriction? The hole looks to be about 2mm
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