Dual Oil Filter - Pointless? - Ford Muscle Forums : Ford Muscle Cars Tech Forum

jrosengarth · 07-19-2007, 07:50 AM

I got a dual filter relocation kit for my build thinking that the oil would be filtered twice...through one filter, then the other. But after finally getting it and looking at it, it looks like the filters run in parallel, not in series, so the oil goes through one of the two filters, not both. I guess this would increase flow?? WHat exactly is the point of this setup then? Just to look cool? Kind of wish I hadn't bought it now...opinions and accusations welcome.
-J

Mikes66 · 07-19-2007, 08:02 AM

Many of us have bought parts that are not currently being used on our cars...

I own 4 carberators, but only one engine. All carbs were bought in the last 2 years. Need a 750 edlebrock, 750 holley or 750 proform?

I own two Radiators, both less then 2 years old. One car

I own a brand new second complete 2" exhaust system after I decided I wanted to install an 2 1/4" H-pipe system.

Lots of other "brand new" goodies hanging around too.....need a duel sump pan...? Was on the engine for 2 months before I decided I did not want to modify the crossmember.

Welcome to the club......

Seriously though, most places will take that equipment back, if you think it is worth the $20.00 shipping charge, and possibly a 10% re-stocking fee... some places will charge, some places do not.....

tachrev351w · 07-19-2007, 08:33 AM

More system oil capacity, up to around a quart, without the need of a deeper sump or expensive pan.

FEandGoingBroke · 07-19-2007, 08:38 AM

Quote:

Originally Posted by tachrev351w

More system oil capacity, up to around a quart, without the need of a deeper sump or expensive pan.

That about sums it up...

Mikes66 · 07-19-2007, 08:44 AM

Quote:

Originally Posted by tachrev351w

More system oil capacity, up to around a quart, without the need of a deeper sump or expensive pan.

Not to be sceptical, but if it takes a quart of oil to fill a filter, and you have two filters, each holding a quart of oil, then how does this add to the systems capacity? I will agree that the resistance of the filter elliment will be cut in 1/2, so you do not loose as much oil pressure due to the filter.

Remote oil lines reduce the system pressure, so oil coolers, or external filters will cause a reduction in oil pressure. So the lines running over to a remote oil setup will reduce the pressure, probably by the same amount of gain you get from going to two filters in the first place....right?

The capacity of the oil system is how much oil is available to the sump pump, not how much oil is in the delivery system. Am I right about this?

I though the idea behind a bigger pan was at high RPM's the oil in the pan runs dry before the oil in the block has a chance to return to the pan. So, by having more oil in the pan, at high RPM's there is more reserve in the pan to keep the pump from running dry. Right??

tachrev351w · 07-19-2007, 11:35 AM

Not the oil system capacity to properly oil the engine, but the total oil capacity of the system. Make sense?

I agree they are two different things.

I also feel that a large oil pan is a crutch if you are running a 5qt pan dry at high RPMs

If that is the case, either you have to much oil pump, or not enough drain back.

This is barring insane/cool/insanely cool 9000-10000+ rpm engines...I have no experience with these, but dry sump sounds like a good place to look to me, or road race vehicles that need baffles to prevent sloshing.

I had a 8qt pan in my mustang, and never put anymore than 6qts in it. What did I gain by using this pan?

The oil is stored further from the crank, reducing the amount the gets whipped to a froth by the crank. The pickup stayed submerged just fine.

More sheer volume of oil, like by adding a second filter, could help keep oil temps down. A second filter will also act as another heat sink. It may also help keep the oil from breaking down as quickly, since the is more oil to do the lubrication work.

I have a dual filter setup on a shelf that will be going on my next car. I don't feel it will hurt it, but I am not sure it will help a noticeable amount either.

Gearhead99 · 07-19-2007, 05:05 PM

More for looks then anything else.

If you want double filtration, why not get two remote single filters and install them in series. I wouldn't do it though. I think you'll have too much restriction myself.