Overfill question and idea

[Zendalar]

There always seems to be problems with the engine oil overfill thingie.

Would it be possible to attach a clear canister to the oil breather hose that when you overfill, the oil would go directly in the canister and not the air filter? Or does the breather hose serve another purpose?

[911pcars]

Yes, good idea, especially if one converts over to individual air filters (on early MFI or Webers). Normal engine blowby will puke oil out of the breather hose and into the air cleaner where it'll be ingested by the engine. On early 911's, excess oil from this source drains out of the air filter housing onto the ground (usually the engine).

You can fashion a catch-can out of a windshield washer tank (new or used) and some PVC/heater hose and PVC fittings from the local auto parts store. I've even seen a race car setup using a hose leading to a small plastic orange juice container to catch oil (required in most race regs). Not the most elegant of solutions, but it passed tech.

An nice setup will have some means to drain the captured oil, built-in provisions to attach hoses and a see-through quality to inspect the oil level. I haven't seen a bottle that matches all three requirements though. Here's an engine using an aftermarket WW reservoir from JC Whitney (and other sources):



Hope this helps,
Sherwood Lee
http://members.rennlist.org/911pcars

[Zendalar]

So this way you basically could not overfill your car ? Everybody just seems to be so worried about the overfill and I wondered that this would be an easy fix. There won't be any trouble using this kinda canister?

[Zaphod32]

911pcars:

Don't happen to have closeups of your Webers?
They really look cool...



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// jyri aka Zaphod32
-from Finland, Europe-
http://911porsche.cjb.net

[Wayne 962]

Those aren't Webers. That looks like an RSR spec engine with Mechanical Fuel Injection. The giveaway is the injection pump, and the dual plug RSR / 917 distributor (yes, the 917s used two of these!).

Cool engine.

-Wayne

[Planter91C2]

what are the tennis balls for?



Hope this helps,
Sherwood Lee
http://members.rennlist.org/911pcars[/B][/QUOTE]

[motion]

Sherwood,

If you're in the need for web or CD-ROM multimedia design and production then I'm your man! Will keep your organization in mind for my projects as well. I'm in OC.

http://www.animotion.com

(shameless plug)

------------------
-Richard
'84 Carrera Cabriolet
'74 911 Widebody 3.6 Project

[p0r2chby]

Planter, good question and one that merits a simple answer. The t-balls are used to keep dirt and other foreign matter from entering the intake. Obviously, these would be removed before starting or running the car.

[911pcars]

Zaphod32,
Sorry for the confusion. The nice looking engine was at Cambria. This is my engine with Webers; not as nice as slide valve throttle bodies, but adequate for my budget.



The red hoses on top of each air cleaner lead to the "puke" bottle.

Sherwood Lee
http://members.rennlist.org/911pcars

[joehahn]

Hi All,
I reincarnated this thread because I believe my last oil leak is nothing more than excess oil coming through breather hose, front of engine, through little rubber beak thing, down crankcase to a nice perfect, dead center spot on garage floor. Last night I completed the new sump plate install (bone dry this a.m.!) and only filled engine with 8-9 quarts (just under halfway of dipstick) and the leak lessened, furthering my belief that majority of problem is excess oil.

Therefore, I would like to construct a crude "catch can" or "puke bottle". I am assuming that windshield wiper fluid bottle is durable enough to survive engine heat? In it's crudest form...just to see if this is my problem...can i just throw a bottle in there and duct tape the breather hose in there for a few days? Where did you guys in above pics get your washer bottles (that small).

Thanks,

Joe 68 L

[Mikko Kosonen]

Aftermarket wiperfluid canisters (with pump) are usually about 5$. You can buy them from a local..well, car parts store..walmart?? I don't know what they are called over there but we have these stores where we can go and buy any part to almost any car. These are the places. Ah, yes, the canister is made of PVC plastic and they can take the heat. Just make sure you don't make it tight -> Make an air outlet to it.



You sure have been reading old stuff

[joehahn]

....this may be a dumb question so don't laugh....is the oil very flammable, like gas? I ask because I want to know how lashed down my temporary bottle needs to be. I am assuming since many of us have oil leaking all over everything that it is not as dangerous as gas but dangerous nonetheless....

[Jim Sims]

Unless the oil in the engine is diluted with gas from a mis-firing cylinder or leaky injector or other fuel system problem the oil collected out of the air box or air cleaners won't be particularly flamable; if it was there would be many more Porsche engine fires given all the oil leaks.

However, given the right conditions oil wil ignite and burn; I wouldn't put the oil bottle near a cat converter or other high heat source.

Cheers, Jim