Oil Pressure At Startup

[rob83ke70]

hey

I'm putting this in the ke corolla discussion as it is closer to a k motor than anything else. The engine in question is a 4y 2.2lt (which as you all should know is a larger, uprighted 5k more or less) and it takes a z68 the same as a k engine.

 

my problem is that the oil pressure appears too low when first started. the longer you leave it (eg overnight) the longer it takes to get oil pressure back up again. It feels much like if you drained the oil out of the filter and then installed the empty filter and restarted it. the filter is a fleetguard equivalent of a z68, and the oil is 15w40 and about 5,000km old. this has been happening for some time though and i haven't got around to having a look at it.

 

is there a drainback spring/valve in the filter housing on the side of the block? there isn't one in the z68 is there? anybody encountered this before? once the pressure comes up it is perfectly ok no rattles or knocks or lifter noise or anything like that, its only when you start it up after it has been sitting for some time.

 

Robert.

[Felix]

I've run into that with a valvoline filter on a k motor before.

 

Ryco's aren't bad, or better still genuine toyota.

 

I like running the smaller ryco z386's these days (4af/g type). Spin straight on.

Edited September 15, 2009 by Felix

[Taz_Rx]

No there isn't an anti-drain back valve in the filter housing, but you can get filters themselves which have them.

Not 100% sure but you'd assume the genuine ones have it. If you wanna be wanky then get a TRD one off ebay for a 4age. :lolcry:

[kiahn]

valvoline now have the anti drain back vavle, had a ryco and never had a singlee probleem with oil pressure, always run ryco or genuine toyota

[altezzaclub]

When we bought the KE70 it rattled every morning until the oil pressure built up. It had some Japanese filter on who's name escapes me.

 

I replaced it with one that had an anti-drain valve in (a circular piece of rubber) and the problem vanished!

 

I reckon it hammered the bearings over the umpteen months it was in there before we bought the car, as it sounds slightly growly in the bearings yet its only done 130,000km since brand new. Maybe its a Toyota thing?

[rob83ke70]

felix, you are running a z386 on a 4k?

 

might have a squiz in the filter book tonight. pulled the little valve/spring/doodad out of the bottom of the filter housing (part the filter screws on) and had a look, can't see any problems...

 

Robert.

[Felix]

Sure am Rob on my 5k, and used to on the 4k in the lil wagon.

 

Way quicker to build oil pressure after an oil/filter change.

[rob83ke70]

doesn't it have a much smaller filter area? would this mean it would block quicker?

 

i'm starting to get a bit of a headache about this.... compared a pile of toyota/aftermarket filters in the stockroom just then, everything, including the fleetguard filter i pulled off the 4y engine has an anti drain back valve...

 

I've always used a z68 on the corolla (4k) and have never had a drama with it, but its in a much healthier state than the 4y...

 

what about a z418?

 

Robert.

[Felix]

doesn't it have a much smaller filter area? would this mean it would block quicker?

 

Maybe, but I figure if it is good enough for a 4age, then I don't really see a problem.

[rob83ke70]

put a z68 on it in a ryco flavour, noted the box says "with anti-drain valve" and it seems much better so far. the test will come tomorrow morning when I start it cold.

 

the fleetguard filter appeared to have an anti drain of some sort fitted, and looking up the website (cummins filtration) it apparently does have one fitted... not quite sure what is going on still...

 

Robert.

[Trev]

put a z68 on it in a ryco flavour, noted the box says "with anti-drain valve" and it seems much better so far. the test will come tomorrow morning when I start it cold.

 

the fleetguard filter appeared to have an anti drain of some sort fitted, and looking up the website (cummins filtration) it apparently does have one fitted... not quite sure what is going on still...

 

Robert.

 

Could be due to the relief valve, How low was the oil pressure?

[maxyboy55]

doesn't it have a much smaller filter area? would this mean it would block quicker?

 

edit: the z68's are a completely different design inside to the z418, they both have the same surface area

Edited September 15, 2009 by maxyboy55

[corolla_nut]

oil pressure was low enough to have lifters rattling, timing chain rattling, and oil pressure light on for maybe 5 seconds when dead cold. light would stay on for a few seconds when starting during the day, much like a holden :lolcry:

 

seems much better with a ryco z68 but the real test will be tomorrow morning when it's dead cold....

 

is a z418 the same thread as a z68? have never looked inside a filter to compare, never had the time to slice one open.

 

Robert. (apparently signed in as kylie)

Edited September 15, 2009 by corolla_nut

[Hiro Protagonist]

is a z418 the same thread as a z68? have never looked inside a filter to compare, never had the time to slice one open.

 

Ryco website lists the diameters and threads for all their filters

 

Z418 = 89mm height, 77.5mm seam diameter, 71.2mm seal diameter, 3/4-16-UNF-2B thread

Z68 = 120mm height, 82mm seam diameter, 70mm seal diameter, 3/4-16-UNF-2B thread

 

Most if not all the filters will have the same thread, but you want to make sure that the seal lines up with the seat on the block - you REALLY don't want to have that seal leak/blow as I once did (although that was because the old seal didn't come off and I didn't notice), the oil slick will rival the Exxon Valdez.

[rob83ke70]

new filter did not fix the problem. improved slightly, but still takes maybe 2 seconds for the light to go out when dead cold, and maybe a second or so with it sitting for four hours.

 

any other ideas? once started and oil pressure is up it seems fine... which would rule out worn bearings because they get worse when warmed up...

 

Robert.