Centrifugal oil filter for Isuzu 4B

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Originally Posted by steveG

Why would it be interesting?
'cos its boring at work ATM, and knowing that the twin filter setup I've gone to the hassle of fitting might do TWO bazillion kays makes me feel all warm and fuzzy :p

....although that would require me getting it finished and on the road before I'm too old to drive it....:angel:

Steve

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Haha, I meant why bother spending all that coin on a centrifugal filter when you could just buy another 4BD1 for that price, my why wasn't directed at you Steve:p

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Originally Posted by rar110

I was thinking the feed would be from the spacer you are making at the top of the filter pipe. The return would be to the diamond shaped plate on the pass side where the turbo oil return is normally fitted. The brochure I have indicates a 1" return.

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So you're thinking about doing a twin filter setup, PLUS a centrifuge?
Whats the model number you're looking at?

I'd be concerned about how much oil they need to run them, and whether the oil pump has the excess to supply.

Steve

Bearman swapped his 4BD1 out with less than 500k and he his meticulous with servicing.

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Originally Posted by rar110

Bearman swapped his 4BD1 out with less than 500k and he his meticulous with servicing.

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700k when i spoke with Brian, still running well, just low on compression

It operates at 35 - 90 psi.

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Originally Posted by Bearman

I had 750K on my original motor .

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http://www.aulro.com/afvb/isuzu-land...ml#post1324985

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Originally Posted by rar110

It operates at 35 - 90 psi.

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Pressure has not that much to do with the flow, the pump need to be capable of flowing enough volume at the pressures required, if you open up the restrictions to much, you loose pressure.....i.e. noticeable low oil pressure on a worn motor as the bearings have opened up, allowing more flow, less pressure

So if you stick one on, I'd be inclined to stick on a oil pressure gauge and check for any drop in pressure before and after

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Originally Posted by rovercare

Pressure has not that much to do with the flow, the pump need to be capable of flowing enough volume at the pressures required, if you open up the restrictions to much, you loose pressure.....i.e. noticeable low oil pressure on a worn motor as the bearings have opened up, allowing more flow, less pressure

So if you stick one on, I'd be inclined to stick on a oil pressure gauge and check for any drop in pressure before and after

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And I'd think it would be even more likely to struggle for flow if running the Isuzu bypass filter AND the centrifuge as they are both going to flow oil.
Low pressure at idle when hot would probably negate any good effects of cleaner oil.

Steve

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Originally Posted by rovercare

http://www.aulro.com/afvb/isuzu-land...ml#post1324985

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My memory's going, didn't realise his had done that many ks.

The supply pipe is 3/8". I found a US site where they make a kit using this centrifuge to suit a cummins motor fitted to a dodge pick up.

I suppose cleaner oil and longer ks btw changes were benefits I liked.

To address low oil pressure, use a check valve. This will only supply oil to the centrifuge above the valves pre-set cut off pressure. One such valve has a 25 psi cut off pressure.
When idling, there is no loss of oil to the engine if the pressure drops below 25 psi.

Some brands of centrifuges have these built in as well.

The biggest hassle with running a centrifuge is the 1" inner diameter return hose to the sump and above oil level.

Apart from that, removing particles from the oil is a great thing.

My 2 cents.

Cheers