The Cal-look Lounge

Hi

In the process of installing my 2,6L typ4 engine, which is running drysump, I have some questions about the dimensions of the oiltank. I have to create a new one, and could use some advice.

How big should the tank be? How much oil, and how much tank volume? The buggy is for street-use, and hopefully trackdays later on.

How big should the hoses be? I have been thinking about the following:
From tank to pump: AN12
From Pump to tank: AN10
From engine to filter and bank to pump: AN10
Breatherhose from oiltank to breatherbox: AN10

What do you think?

Where is the place to connect the thermostat and oilcooler?
I have seen that somebody connect it the filter circuit, and some at the hose from pump to tank.

Any other things that I have to remember?
The only place that i have room for the oiltank is next to the transmission. I hope that is okay.

I have never had a dry-sump system before, so I don´t much about it. All information and advice is more than welcome.

Jakob

Hi Jakob

Hose size is one thing, the design of a drysump oil tank is another thing. Drysump oil tanks pretty complex.
The tank not only holds a large amount of oil but also works as an oil/air seperator and have to reduce foam.
I know you are a pretty good with tools and would most likely be able to make a drysump tank, but is it worth
the effort....

I would recommend that you buy a tank.



Best regards

Rolf

As you know, it is the "bulldog" engine. It had a big 15L tank, but it is too high to be installed in a buggy.
But it would have been a lot easier and cheaper just to install that one.

I have been think about making a tank with a volume of 10L, and then put about 5L oil in it.

5 L in a drysump system is not near enough, go for 8-10 L to ensure a good oil supply.
If you only want 5 L capacity then it's much better converting the engine back to
wetsump.

/Rolf

The oiltank that the engine used to run with have a capacity of 15L.

I think that is very big, so I hoped to be able to fit a smaller one.

Jakob

I agree with Rolf, you need atleast 8 liters for a suficient oil supply.. I run 10 liters in my system... In the tank there is a deflector plate with holes in it above the middle of the tank. You need to place the tank at the same height as the sump or you will need a block off valve or something that insures the oil doesnt run into your engine while parked.

Spring

Okay I didn´ thought it was necessary with any sort of valve, as the pump is a positive pump. But of cause there will always be a small leak inside the pumpe.

Jakob: What hose sizes do you use? And what pump-type? The one with 2 or 3 hoses connected?

I might end up using the old tank, and then change the body, so the old tank will fit. Why change it, if it ain't broken ;)

just wondering where you place those 8 litre tanks, then.

Porsche installed many of theirs in the fenderwell to help establish the oil level where it would not siphon into the motor. I ran an Autocraft 2 stage dry sump in my turbo charged off road car and never had problems with siphoning the oil but then again it was about how all the lines were run and where.

Rick M