Turbo'd 2H oil pressure

[dibbz]

The donor I took this turbo off showed low oil pressure on the factory oil gauge, now the turbo is on my 60 I have the same situation.

It'll sit right at the bottom at idle and just over the low mark when driving.

What's normal in this situation?

Thanks

[Shadow]

foir starters fit a real guage or you have no idea whats going on anyway. A 15 year old guage that really wasnty accurate when new could be telling you anything.

My Hj60 puts out 100+ PSI oil pressure cold at idle

When warm it puts our about 45psi idle, 90psi 2500RPM

With the oil feed to the turbo taking some oil I would exopect the oil pressure to have dropped by some amount. How much would depend on how restrictive the oil passage in the turbo is. If you believe your pressure is toio low, you could put a restrictor on the turbo's oil feed, i believe some recomend this anyway.

[Sixty's Guy]

I noticed too that when I fitted my Denco turbo that the oil pressure went down. I figured that after I had it serviced that it would go up to where it was beforehand, but it hasn't. Maybe that's just the way it is?

[dibbz]

Thanks man.

The gauge was pretty spot on before the turbo went on with it sitting on the top line when driving and on the bottom line when idle. It still moves like this its just lower on the gauge.

A 22 year old gauge :)

I need to save some more cash for more new gauges :) Wouldn't mind a water temp gauge also.

Hows your exhaust temp look? I can't get mine past 300 on the street, I need to go for a wheel this weekend and give it some. I might be able to lean it back a little if it's not going to get over 400.

Cheers!

[Sixty's Guy]

I haven't got a pyro or boost gauge, but I want some! I need cash too!

[bigbrowndog]

The donor I took this turbo off showed low oil pressure on the factory oil gauge, now the turbo is on my 60 I have the same situation.

It'll sit right at the bottom at idle and just over the low mark when driving.

What's normal in this situation?

Thanks

You should check it with a after market gauge. Pressure for a 2h should be
36-85lb or 245-588kPa at 3,000 Rpm.
4.3 psi or 20kPa or more at idle. Cheers

[Shadow]

The donor I took this turbo off showed low oil pressure on the factory oil gauge, now the turbo is on my 60 I have the same situation.

It'll sit right at the bottom at idle and just over the low mark when driving.

What's normal in this situation?

Thanks

You should check it with a after market gauge. Pressure for a 2h should be
36-85lb or 245-588kPa at 3,000 Rpm.
4.3 psi or 20kPa or more at idle. Cheers

at operating temperature.

[Shadow]

I woulid like to publicly apologise to bigbrowndog for correcting him in a public forum.

He pm'd me about my correcting him and id just like to say that im sorry and it will never happen again.

[/sarcasm]

[G_loomis]

I woulid like to publicly apologise to bigbrowndog for correcting him in a public forum.

He pm'd me about my correcting him and id just like to say that im sorry and it will never happen again.

[/sarcasm]

I did note the sarcasm thing at the bottom...but I would of said you simply added a piece of info that bigbrowndog left out.

[Shadow]

I woulid like to publicly apologise to bigbrowndog for correcting him in a public forum.

He pm'd me about my correcting him and id just like to say that im sorry and it will never happen again.

[/sarcasm]

I did note the sarcasm thing at the bottom...but I would of said you simply added a piece of info that bigbrowndog left out.

thats what i thaught

but then i got this

From: bigbrowndog
To: Shadow
Posted: Wed Nov 01, 2006 2:42 pm
Subject: oil pressure
thanks for the correction but most understand the readings are taken at normal operating temperature. besides I pm'd the page from the workshop manual so he would have a clear understanding of what Toyota recommended. Will be more careful for you next time LOL.

[dibbz]

Yeh I do appriciate the help either way...

I have a 2H workshop manual and the pressure drop seems typical for these mods.. but at the same time it isn't an issue in most cases, i'm leaning towards fixing it for the times i'm not in a typical situation

Love the turbo tho

[bigbrowndog]

I woulid like to publicly apologise to bigbrowndog for correcting him in a public forum.

He pm'd me about my correcting him and id just like to say that im sorry and it will never happen again.

[/sarcasm]

I did note the sarcasm thing at the bottom...but I would of said you simply added a piece of info that bigbrowndog left out.

thats what i thaught

but then i got this

From: bigbrowndog
To: Shadow
Posted: Wed Nov 01, 2006 2:42 pm
Subject: oil pressure
thanks for the correction but most understand the readings are taken at normal operating temperature. besides I pm'd the page from the workshop manual so he would have a clear understanding of what Toyota recommended. Will be more careful for you next time LOL.

I thought the Pm I sent you was polite.And did not warrant such a sarcastic return PM and a crack on the forum. Why didn't you qoute that on your own previous post quote "cold' & "warm". when quoting pressure readings. When I fitted my turbo I lost no oil pressure but I did not like to quote that as a contradiction .I think running over 100+ lbs cold at idle says your pressure relief valve is not operating to spec, perhaps the bore is worn on one side.cheers

[Shadow]

I woulid like to publicly apologise to bigbrowndog for correcting him in a public forum.

He pm'd me about my correcting him and id just like to say that im sorry and it will never happen again.

[/sarcasm]

I did note the sarcasm thing at the bottom...but I would of said you simply added a piece of info that bigbrowndog left out.

thats what i thaught

but then i got this

From: bigbrowndog
To: Shadow
Posted: Wed Nov 01, 2006 2:42 pm
Subject: oil pressure
thanks for the correction but most understand the readings are taken at normal operating temperature. besides I pm'd the page from the workshop manual so he would have a clear understanding of what Toyota recommended. Will be more careful for you next time LOL.

I thought the Pm I sent you was polite.And did not warrant such a sarcastic return PM and a crack on the forum. Why didn't you qoute that on your own previous post quote "cold' & "warm". when quoting pressure readings. When I fitted my turbo I lost no oil pressure but I did not like to quote that as a contradiction .I think running over 100+ lbs cold at idle says your pressure relief valve is not operating to spec, perhaps the bore is worn on one side.cheers

The last line of your pm was polite? "Will be more careful for you next time LOL." That comes over to me as an elitest wanker making a snide remark, and i dont think it was at all polite.

I quoted warm and cold pressures. You just quoted pressures, which are SIGNIFICANTLY different at cold and warm, wether you want to call it warm or operating temperature is irrelevent to me, it probably should be refred to as operating temp, but I think the point was made when i said warm aswell.

The OP could have taken measurements when his engine was cold and then compared them to your spec's and thaught his oil pressure was good, or bad, and then taken steps to correct an oil pressure problem that doesnt exist. You say, most understand that readings are taken at normal operating temperature, you sure about that? "most" is a pretty big statement. Im sure all mechanics know this, but is the OP a mechanic?

My minor correction of your information was not an attack at you and the fact that you took it as one shows a thing or two about your character.

And lastly, what are the toyota spec's for cold pressures? I have never seen any published anywhere and no-one at toyota can tell me what it should be. Perhaps the reason there is no spec is because the pressure when the engine is cold is so variable, and invariably un-important. My engine has been fully rebuilt and the oil pressure reliefe valve has been replaced along with the oil pump. Maybe with all new internals the pressure is just high?

The engine rebuilder tells me it is probably high but nothing to worry about. Is he full of shit? dunno, but it hasnt caused any problems yet, (no bulging filters) and I do have 12 months warranty, so we will see what happens.

[dybes]

just a thought but...
fitting a turbo requires the use of a feed and drain line...
this would require some oil to fill... might not think it but it does...
and having low oil can reslt in a lower oil pressure reading...
maybe a touch more oil might solve the problem.
again this is just a thought
cheers guys

[Shadow]

just a thought but...
fitting a turbo requires the use of a feed and drain line...
this would require some oil to fill... might not think it but it does...
and having low oil can reslt in a lower oil pressure reading...
maybe a touch more oil might solve the problem.
again this is just a thought
cheers guys

Only way i can see that happening is if the pickup was sucking air, and that would mean a good 5 litres of oil would need to be in the turbo.

[MacroP]

The oil gauge is not linear unlike an aftermarket unit.
In my 75 Ute with a 2H and DTS turbo the oil pressure(when hot) was showing near zero on the gauge at idle, before and after engine rebuild. The real measured pressure was still excellent though, more than 15PSI at idle(from memory) which was well above tolerance limits. It's just that the turbo takes bit of extra oil pressure away at idle but not much though the factory gauge reading shows a lot but it really isn't. When the oil is cold the guage reads much more at idle but when hot it's reads near zero yet there's only a few PSI in it.

[foodie]

Get a real gauge dibbz!

<hijack>


How much boost do you guys run on yer 2h - I am considering a v8 or turbo but it all depends on how dibbz's truck goes - I like the turbo he has but I want more grunt than the 8psi it's running at.

What would you run a 300k 2H at?

</hijack>

[dibbz]

13 seems to be the magic number.

My engine bay seems to get a lot hotter overall. Still dont see the pyro get over 300 when i give it a run, haven't gone offroad with it yet. Won't be today I think I'll be helpin shorty_f0rty move into his new place.

Did you see this thread?
http://www.outerlimits4x4.com/viewtopic.php?t=88746