16V Oil problems

[Snoozy]

So on the weekend i damaged the head on my 4age (about 3000 ks old)
it has worn groves where the cam sits in the head and stuffed both cams, apparently the head will fix.
was looking over it with an engine mechanic and he said that it has been running lean on oil in the top-end, caused by cornering hard/drifting.
just wondering if anyone els has had this problem and how have they fixed it?
eg. oil baffles in sump?

all opinions appreciated
Cheers

Edit* engine is smallport

[SpotterOne]

Seems strange to me. 16v's tend to have TOO MUCH oil in the cam boxes, hence the need to switch the cam covers around to try and get the oil out and back down to the sump before it pumps it out through the breather.

I've not had an issue with mine, and I almost certainly generate a more g-forces than a sprinter through a corner, especially if you are drifting. Then again, I have a couple of mods that would certainly make it less likely for the pickup to run dry.

I run a winged and baffled sump, TRD oil pump gears and keep the oil about 5mm above the full mark on the dipstick. My breather now goes into a catch can, which almost always gets about 100ml in it after a track day. No oil goes into it driving around on the street though.

[p a c - m a n]

I drive the ring out of my AE82 bigport along the sideling. max revs, bugger-all excuse for a straight and no problem at all. ever.

I've never heard of this happening to a 4AGE of any sort? possibly has, but not that ive ever come across?

So what now from here?


PS: agree with the above statement, over fill your oil by about 500-750ml when at the track.


And does the head have scorch marks where the cams were?

[Delazy]

i always thought it was more a oil feed problem at high revs....which is why many companies released high flow springs for the oil pump....ideally we'd all love TRD oil pump gears, but sadly no longer available but if anyone knows of anything similar feel free to point me in the right direction i know myself and ken want something

as fair as oil goes for me....will be running a oil cooler with thermostat, HKS or similar high flow oil pump spring but yea...if anyone knows of aftermarket oil flow pumps or what not, do tell

[p a c - m a n]

Isnt a bigger oil pump needed when engine speeds exceed factory intended rpm? aint daim's got factory rev limiter?

[Waz]

high flow springs?

That would just be a spring to uprate the std pressure relief spring, more pressure not flow.

[Sprinter86]

I've had oil problems in by smallport, had it in my sprinter for 3 days, taking a hard left (drifting) and the engine stalled. when i started it again (i checked oil level, it was spot on full line) i was getting knocking from the bottom end under load.
Turned out i had ran out of oil at all 4 of my big ends and mains!!
luckily i didnt spin a any of the bearings! Does anyone know how i can get my hands on an aftermarket oil pump? does a 20v pump fit a 16v? and sump baffling, anyone with experience with this?
any other thoughts on what could of caused this?

Thanks!

[Jonny Rochester]

I have read (after doing a google search) about a 4A-GE with a 3mm spacer on the oil pressure spring to up the oil pressure. If you had a good oil pressure gauge, it would not be too hard to test this. I havn't done it yet.

[balistic]

Was re-watching my HotVersion Vol86 DVD the other day - I think I recall the TRD N2 car having some issues during one of the practise sessions and it looked they pulled the oil pump out and were fiddling with the spring - and comparing a new pump with the existing one - but its all in Japanese so I had no idea what they were saying?

[70XIN]

You can do the spacer/spring trick to bump up pressure

And there's a small amount of "porting" that can be done around the oil pickup flange and inside where the gears are

Other than that, nothing else major you can do, the pump's good for plenty of revs