[DeTomaso] Oil Leak??

[Will Kooiman]

The crankcase evac kit tied to the headers does not work unless you're
pushing lots of RPM.

I tried it on my car because I was curious how well it works.  It spit oil
all over the place.  I had oil on my valve covers, intake manifold, and all
over the ZF.  Everyone said it wouldn't work, but I had to see for myself.

I hooked up a vacuum gauge to the headers, and it only pulled about 1/2".
The intake manifold vacuum was something like 16".  I taped the gauge to my
window to see how it varied as I drove around.  It never got over 1/2".  I
never got over 4,000 RPM's, though, at least not while I was watching the
gauge.

One of my leaks turned out to be my dipstick tube.  It was cracked right
where it enters the block.  It blew oil mist into my alternator and shorted
it out.  Lucky me.

Try switching to a normal PCV and see if the oil mist goes away.  You still
have a leak somewhere, but you're making it worse with the header evac kit.

Oh yeah, mine didn't leak at idle either.

-----Original Message-----
From: detomaso-bounces at realbig.com
[mailto:detomaso-bounces at realbig.com]On Behalf Of Will Demelo
Sent: Sunday, October 01, 2006 4:23 AM
To: detomaso at realbig.com
Subject: Fw: [DeTomaso] Oil Leak??


I have my breathers tied into the exhaust.  There shouldn't be any pressure.
Another note.It doesn't leak at rest.
This started after I washed the engine bay a couple of times.
I'm positive it was leaking motor oil because I had to put 3/4 of a liter
in.
Will

----- Original Message -----
From: <redvobra at aol.com>
To: <detomaso at realbig.com>
Sent: Saturday, September 30, 2006 5:06 PM
Subject: Re: [DeTomaso] Oil Leak??


> Also worth noting. I have the same leak, though mine has been a very slow
> leak. Just a drip every now and then. Recently, I changed valve covers and
> put in new PCV grommets that had built in baffles. The baffles really
> restricted airflow through the PCV Valve and Valve cover breather.
> Suddenly my slow leak turned into a constant dribble! Removed the grommet
> baffles and everything went back to normal. My theory is that the baffles
> were causing there to be too much air pressure in the crank case, pushing
> out
> the oil.
>
> So, you could check for a plugged PCV valve or other obstruction in the
> crank case ventilation system. Worth a look before you start tearing
> everything down...
>
> -Chris
>
> -----Original Message-----
> From: pantera007 at sbcglobal.net
> To: wdemelo at cogeco.ca; detomaso at realbig.com
> Sent: Sat, 30 Sep 2006 12:33 PM
> Subject: RE: [DeTomaso] Oil Leak??
>
>  Yes I'd say it was likely your rear main seal.
> Yes it can be replaced without pulling the motor, but naturally you will
> pull the ZF.
> You will also have to lose/drop the oil pan I believe.  And if you have
> the
> stock one (a rope seal ?)
> with a nail-like thing in one spot, (Near the center ?) it will not be as
> easy as if this had already been replaced
> with an aftermarket seal without this one pin/nail.  I worked on this job
> on
> Bill Santos' car years ago at a
> PCNC tech session (A photo or two can be found somewhere under the tech
> sessions, check my OLD website).
> I believe blue goop was also applied, perhaps after the pan was tightened
> up.  (We did his clutch at the same time.)
>
> IF that much oil is visible, Will you will coat your clutch disk.
>
> Jack DeRyke should have something to add to this.
>
> Chuck
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]On
> Behalf Of Will Demelo
> Sent: Saturday, September 30, 2006 12:07 PM
> To: detomaso at realbig.com
> Subject: [DeTomaso] Oil Leak??
>
> During a recent trip (3 hour drive), I noticed oil on my wheelhouse, just
> to
> the left of the ZF inspection hole.
> Oil seems to be flying out of the ZF from that hole. No clutch slippage.
> Rear main seal? Do they start to leak that much just suddenly?
> Can it be replaced without pulling the motor?
> It's definately motor oil and not ZF fluid.
> Will D
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