remote oil cooler hose size, 8,10 or an12?

[GD51LA]

street use or race track, what hose size and why?

what factors change with the hose size options ?

 

see most comon is an10. when you see most oem external coolers are closer to an12?

does high volume oil pump like nitto need an12 or 10 be just fine

[Duncan]

Dunno.

I run -10 on the race car.

[Dose Pipe Sutututu]

More so GReddy oil relocation kits, sandwich plates, etc. all use 10AN fittings.

And same, I've only used 10AN and my car sees track work (circuit, doing laps, not 10 sec squirt business).

[MBS206]

-10 is plenty for running to an oil cooler.

When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12.

Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.

[TurboTapin]

Let large companies that are making money off selling kits do the preliminary engineering for you. If they all do -10, then that is all you'll ever need. 

Edited Monday at 12:00 PM by TurboTapin

[GD51LA]

majority aftermarket is an10 yes, but majority of OEM is An12

r35 OEM cooler lines at close to an 12, the hard line that car uses is almost 20mm 

Porsche OEM is also AN12

 

i figure, if our power levels are close to 1000hp, then AN12 should be a must if many OEM standard power vehicles use AN12

[Dose Pipe Sutututu]

Food for thought, the stock oil filter thread is a 3/4-16 UNF, which has an ID of about 10 to 12mm (according to ChatGPT lol).

Now compare than to an 10AN, which has an ID of about 14mm (Raceworks is 14.2mm, Speed flow is 14.27mm).