Technical hemi oil question

i noticed that every day that i start my hemi that on my oil pressure gauge it takes more than a few seconds to build pressure, is there a way to keep oil from draining all back to the pan, my oil filter(napa1515) is pointing down and i think it is emptying out, is there a valve or a diferent filter i could use or install. what i don't like is to start cold i have to rev it on start-up to get it going with no oil pressure showing on my mecanical gauge.

 

Try a napa 1806 filter, it's the same as the 1515 but it has a stand pipe built into it which prevents oil drain out from being upside down. The only drawback is that it's an expensive filter (like 20 bucks) but hemi's aren't cheap to rebuild either.

 

thanks, i don't mind paying 30$ for a solution to my probleme, will check it out tomorrow

 

The NAPA 1515 is the WIX 51515 (as far as I know). I have the OEM up angle HH adaptor on my 331 & the Wix & I haven't noticed any delay in oil pressure.

 

I have had good results with the Motorcraft FL-1A. It seems to have a more effective check valve than others I have used.

 

pick-up a 1806 today, under 20$ and they had it in stock, car is in basement for the winter, will see how it helps in the spring when she comes out. i can see the tube inside the filter. thanks again

 

A wix 51515 is what you have and it has an anti drainback valve in it.

http://www.wixfilters.com/Lookup/Competitor.aspx?PartNo=51515

T

 

The 1515 filter doesn't have anything preventing the oil from draining out through the center hole, normally this isn't a problem but when the filter is mounted upside down the oil can drain out of them through the center hole. The 1806 filter has a built in stand pipe in addition to the anti drainback valve which prevents any of the oil from coming out of it, even when you take a used one off of an engine and turn it upside down the oil stays in them, you have to punch a hole in it to drain it.

 

I fired mine up today for the 1st time in a week, oil pressure came up immediatly. Maybe you have something else going on.

 

i have 70 psi all day while cruising, 40 psi at idle hot, just seems to drain over night.

 

I tend to crank my engine over with the ignition switch off until the oil pressure comes up, then I fire it up. But that trick oil filter could be a simple solution.

 

Some filters have the anti-drainback valve, some don't.

I found a very interesting backyard mechanic oil filter analysis. Although it's not Hamb specific, it shows you what's inside of the more common filters.

http://forums.evolutionm.net/evo-en...ilter-testing-results-thread-4g63t-4b11t.html