ABA + 1.8 Motor owners

[mtbrob]

We have a oil problem in the race Fox, it has been pushing oil out into the catch can by the quart, and I need some advice. It looks like any oil over 4ltrs ends up in the catch can. But here is the thing, we run the 93 turbo diesel oil filter(it's almost double the size of stock) and if stock oil capacity is 4.5 what gives? When the oil is halfway to the add oil bend in the dipstick it pushes out no oil.


We run the ABA with the 1.8 head, stock valve cover and TT block-off plate with a 3/4 inch breather hose fitted into it. It has new rings and all the oil breathers lead to the catch can.

Any thoughts would help.

7th overall and 1st in class this weekend at 24hours of LeMons

[WGC]

If you check pistons, block, and other mechanical parts and all is ok, maybe your problem is pre-ignition. You know how is engine racing temperature?

Fox oil pan is baffled?

What´s the fuel injection model you use?

What is the fuel?

The termostatic valve is out?

[Banned wagon]

Awesome! Job at the northworst GP ! Was a good battle for the class C win!

Good luck in class B (or higher) next time

Come down to thunderhlll again I want some bacon sandwiches

[mtbrob]

WGC

Pistons good, rings good, block good and pre-ignition maybe.

109deg.

We run stock CIS-E -

a windage tray, no baffles...... yet.

Thermostat in - temp I don't know.

I'd take any advice.

Right now the plan is to have a catch can return line go to the pan and put a oil temp plug in the pan as well.

[Edcon91 II]

Nevermind

[oRANGEJULIUS]

Just a thought: is your outlet on the TT block off plate baffled in any way (baffle plates, screen, etc)? I know most crankcase vents have some sort of baffle system in order to minimize the amount of oil being discharged yet still allowing the vapor/pressure to escape.

[mtbrob]

The block off plate has a 3/4 inch hose fitting that runs up to the catch can. Inside the catch can there is a baffle. The can is up hill of the block off plate and the valve cover.

We run 91 octane fuel.

Baffles in the pan before we race again, I think.

The funny thing to me was, with the breather/filter off the catch can you could feel the air being pushed out puff puff, like a steam engine, puff puff.

[dacolino]

we run the 93 turbo diesel oil filter(it's almost double the size of stock) and if stock oil capacity is 4.5 what gives? When the oil is halfway to the add oil bend in the dipstick it pushes out no oil.


We run the ABA with the 1.8 head, stock valve cover and TT block-off plate with a 3/4 inch breather hose fitted into it. It has new rings and all the oil breathers lead to the catch can.

Stock oil capacity is less than 4.5qt? All the foxes I own(ed) take around 3.8qt, do you mean with the diesel filter?

You mention a breather out of the crank block off plate...this might be your issue. I could have sworn reading the 8v technical forum a while back someone was having a similar issue and turned out that oil was just blowing right through there instead of acting as a breather. Just curious why are you running a crank and valve cover breather?

[Edcon91 II]

Stock oil capacity is less than 4.5qt? All the foxes I own(ed) take around 3.8qt, do you mean with the diesel filter?

I was thinking the same thing, but then remembered he has an ABA 2.0, not the 1.8. The ABA oil capacity is 4.2-4.3 quarts. With a bigger filter he should be right around 4.5 quarts.

[mtbrob]

We added a breather to the block off plate because we were pushing so much oil out the valve cover.

[QuantumSyncro]

I was thinking the same thing, but then remembered he has an ABA 2.0, not the 1.8. The ABA oil capacity is 4.2-4.3 quarts. With a bigger filter he should be right around 4.5 quarts.

engine makes no difference, the constraint is the oil pan, so your original thoughts were correct IF it has a stock 1.8 oil pan you would still have to abide by the oil capacity of the 1.8L engine, otherwise the level is too high.

diesel 1.6 takes just under 4 qt with new filter, same jumbo filter he's probably running. Turbo D is the same situation, same pan but has oil return line...same capacity.

edit:
Reference 1983 VW Quantum owners manual for 4 cyl engine gas, oil change with filter takes 3.5 qt oil, without takes 3 qt oil. Oil change for 5 cyl and diesel takes 4.0 qt with filter and 3.5 without.

steve

[denver_fox]

Hmmmm, interesting. My new wagon pretty much has the same setup-albeit the catch can and crank-block off plate. Oil doesnt "push" past my valve cover... but I'm not racing it. It does has a slight leak though, right up front by the intake and cam gear. The PO said it just needed new cam-seals.

Oh, and the wagon has the stock 1.8 pan as well, along with stock oil filter. Maybe that is your problem, too much oil pressure...

[mtbrob]

So I drained the oil yesterday and there was only 3 liters in there. Damn we raced for at least 4 hours on that much oil.

I pulled the pan and welded in a fitting for a return line from the catch can.

On a happy note I pulled and cut open the oil filter and there was no debris.