Outer Limits 4x4 Board

I need to know where the oil feed take off is on the block and also where the oil returns back to the engine.

Can anyone help? thanks.

cheers fnq

Oil returns left hand side of sump, cant think where it picks up from and havent got the car handy, normally a pressure gallery in the side of the block is the go for most turbo cars

Hey mine turbo'd
quite welcome to have a look.

Ian

Oil feed is taken with a 'T' fitting from the same orifice that feeds the alternator vacuum pump. VDO (and others) have the 'T' fittings to suit.

Return is welded directly into the sump.

If it is a Hi Mount turbo you can utilise the return feed the alternator uses for the turbo as well. Other wise put hole in the sump..

Oh yeah for you feed T piece make sure the 3 threads are all spot on. I got one that has a minor difference in the thread to the turbo and it weeps oil a little bit. Must rectify this.

Thanks for the replys, nothing as exotic as a TC, just a scungy old bypass filter I am looking to fit.
My engine has the basic alternator without the oil vacume pump on the back.
So where on the block is the alternator vacume pump oil return? I suspect it would still be cast but plugged on the engines without those alternators. I really dont want to hole the sump to fit a filter

Ian thanks for the offer I will see if I can nut it out, before bothering you.
Guess your trip went well, I notice you have internet access.

cheers fnq

There's an oil feed between the LH engine mount plate on the motor, you'll need an allen key to get the plug out of the motor. You may also need to grind part of the engine mount plate away so the hose clears.

sorta on topic, sorta off.. does the petrol block have the same feed as the diesel? I plan on turboing my 4.2 sometime this year

Tuff Mav thanks for the info, there are two allen key plugs in that area from memory, one is small and the other close by and around 10mm. At a guess the small one is the feed and the large one the low pressure drain? If this is true it's nice to have a block mounted low pressure drain, never had one before on any engine.

Will post a pic later to see if anyone can confirm the drain plug.

Chops I dont know but hopefully someone here does

cheers fnq

Its no bother. Anytime.
Trip was great,untill i turned it into a submerine!!!.
Mechanicly she's ok,but she smells a bit.

Cheers Ian

I just fitted one to mine and all I did was put a T piece where the pressure switch is and ran the oil into the sump works fine

Here is a pic of the left hand side of the block, the red electrical connection cap of the alternator is in the forground left, on the block the upper front engine mount bolt can also be seen middle right.

So is that little grub screw the oil high pressure outlet and is the hex bolt/bung plug a low pressure drain? Hope it is

cheers fnq

I'm pretty sure there water related otherwise thats where I would have put my oil lines can find out for certain tomorrow.

Yup..

But I would strongly recommend against doing what I have done and what you have mentioned. Unless your turbo is a hi-mount ie sits higher in the engine bay rather than lower, then you using the return feed on the left will be insufficient and you will get leaks. Bung a hole in your sump..

Why isn't your alternator using these feeds already ?

here is a photo of mine anyhoe. The right of the photo is the oil feed and the left is the return which I would recommend not doing. The threads on the t - piece on the right are a little loose I need to get another, hence the oil...

Jemmybubbles, that is a great pic, I am tickled there is an oil return above the sump. Big thanks for the pic

I am fitting a by-pass filter and will use the highest grade fittings and hose so hopefully it will be set and forget in regards to leaks etc as much as anything is anyway. Also for offroad the higher up the lines the better I feel.
Those takeoff and return points couldn't have been better designed for what I have in mind.

I think the last couple of years of the GQ used a vacume pump concealed under the front cover and runs off the front gearing set so the alternators are the simple everyday type.

cheers fnq

Chops, I'm with you. Does anyone know about doing the same for TB motor. I was thinking of fitting T before sender and return to sump. Will trial with a cooler then fit a turbo with the cooler later. Would the sender still read properly, as it used to have pressure against it and the new plumbing would cause pressure to pass it, if that makes sense?

Bowtiegq, the sender is no longer the restriction the turbo bearings/bushes are, so any point after the take off point and before the turbo will read exactly the correct pressure to the turbo. The engine oil pressure would be very close or at the same pressure also because of the volume of oil these engines push around per minute.

cheers fnq

PS Just a thought, be careful to ensure the cooler if fitted alone has the appropriate restriction so that it doesn't rob the system of too much flow or else total system pressure could decrease.

Like I said go with a hole in the sump. BUt try the Return line that is already there. If you have problems with oil banking up then the sump hole is a must : )