Thread: Centrifugal oil filter for Isuzu 4B

I thought about using one of a wrecked TD5. I also looked up a bypass filter that uses toilet roll like elements. This was around $200 and was for the canister only, would need to make bracket and buy and plumb lines.

I would say that you will not get any change out of $300.

The factory dual filter system (one main, one bypass) is good for 16,000km oil changes according to the Isuzu NPR manual I have here.
But yes, a centrifuge would be even better.

The Mann+Hummel and Fleetgard bypass oil centrifuges work well. Don't know about other brands, and personally I would be wary of buying anything not made by those two or Donaldson.

Bush65 has a mann+hummel centrifuge instead of the bypass filter on his 4BD1TT. I recall the centrifuge cost around $2k new. So it would be cheaper to adapt the TD5 unit.

Priced a Mann & Hummel from Gold Coast, cleanable rather than cartridge type, at $657 + GST. Might be able to do better if we do a group buy.

I just had a quick read of the Mann Hummel info, and there were 2 things that stood out:
1. Oil pump needs to be able to cope with the extra flow used by the unit.
2. Needs an unrestricted return to the engine above sump level. The smallest unit has 1/2" NPT from the quick read I did.

The comparison graph showed full flow and centrifuge filtering - would be interesting to see where a bypass filter like the Isuzu twin filter setup fits into the graph.

Steve

Why? a 4BD1 will do a bazillion kays anyway

Originally Posted by rovercare

Why? a 4BD1 will do a bazillion kays anyway

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

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

Steve

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.