Bart-Jan

I've had similar problems with my '85 Euro S. Once I noticed that using high octane fuel eliminates extrem oil consumption, I re-programmed my injection system (it's a Megasquirt) and now all problems are gone. I guess you cannot re-program easily, but at least, I've prooven that pinging of the engine was the cause. You could have the same and tehre could be multiple reasons for pinging: wrong temperature rating of plugs, excessive carbon built up, too high CR etc. etc. You could try the same as me: buy more expensive fuel with higher octane and see how it goes...

jbrob007

Someone please correct me if I'm wrong, but doesnt the valve covers vent into the intake... Not uncommon to find oil accumulating in the plenums, throttle body, etc... I think it was because of the dreaded EPA - I hate those guys! I'm not sure if it actually HURTS anything, but oil in the mix just doesnt sound righ to me... If I ever do a top end refresh I'm definitely going to install a sharkvent or similar device.

killav

When I installed my turbo, one of the modifcations I had to do was change the PVC system. One of those changes was to remove and plug the rubber line running from the left side of the oil filler neck (as you are facing the car) to the left side of the rubber MAF boot so that the crank case would not be pressurized when under boost. This line has a Y or T and picks up the rear cam cover vent as well. I plugged this line, and vented the system differently. This elimated ALL of the oil I was seeing in my intake and throttle body bowl. It is bone dry. This is on an 87.

GregBBRD

I make these to fit under a stock late model filler neck, which has the "baffle" built in, so I'd suggest using the stock baffle on an early engine, too.

Shane

Frank does it look like this?



If so that is the oil control plate that 928 Intl sells, I added it with the stock baffle and used Drei Bond to seal it all against leaks.

fbarnhill

Shane, Yes that is it. Greg, thanks for the tip. I have already made the gasket for both sides. So I see it like this, first goes the first gasket then the baffle in the pic above, then the stock baffle with new gasket/seal, then filler neck. Greg, did you ever come up with pricing for your new solution? I read the thread but don't remember. Would it be better $$$ spent then powder coating the intake tubes? I hate the way they look.

Thanks,

SeanR

****, another part I need to stock. Greg, when did you start this one? I still have one left from the old batch that I have been holding back to put on my car if/when I yank the intake.

GregBBRD

This baffle is the first one that we have designed and made (in house) and is a significant improvement to the nice working simple piece that 928 International offered.

If you turn the engine upside down (with the pan off) and look at this area, with the 928 International version in place, you can see a direct path to the bottom of the oil filler neck. Some of the oil that is "slung" off of the crankshaft blows right by this style baffle and hits the bottom of the filler neck....no choice.

This new piece completely blocks the direct path and make the oil/air "mixture" turn a corner to even get inside. This first "turn" separates a large amount of the oil, from the air.

Once inside, the oil/air mixture must turn around a built-in internal baffle, further separating the oil from the air. The trick isn't so much the baffle but the reduction of velocity. The oil/air mixture must slow down, for the oil to "fall out" of suspension.

We did a fair amount of testing and research.....as we always do. Turns out that you have to be careful. Too many baffles, inside, speeds up the air velocity, which actually keeps the oil from falling out of suspension.

It works!

SeanR

As soon as I saw the part I knew what you were thinking, and for some odd reason turning the engine upside down came to mind. Genius in the simplicity and you know how I like the simple things. Appears to a bit better than stuffing an SOS pad in one and welding a cage around it. Thought that was ok for minute.

I ran an S4 this past summer minus this (not on flucking purpose) and found out exactly how bad the windage/oil ejection was. 1500 miles and 5 quarts. I won't admit how this happened but let's just say put something in that oil fill neck.

Alan

Greg do you have any available now? price?

Alan

GregBBRD

Yes.

$75 plus shipping.

Alan

Greg - That is a very nice deal!

At that price I think its very good insurance for anyone taking the intake off...

Alan

GregBBRD

Me, too. I put one in every engine that has the manifold off.

I made this new version because I was still getting a large amount of oil from the filler neck area, using the original 928 International design.

I'm not saying theirs is bad...it was a great idea and worked better than just the stock parts.

This is just an improvement.

Rob Edwards

Can you put one on your desk for me?

GregBBRD

Aren't you farther along than this?