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General Car Related Discussion.To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.
Im currently speccing up one to be made for my car which runs a zetec turbo but one area im unclear on is the return drain, on a cosworth does this drain into the sump above oil level or below?
Im currently speccing up one to be made for my car which runs a zetec turbo but one area im unclear on is the return drain, on a cosworth does this drain into the sump above oil level or below?
You have different trains of thought / belief on this one. However, suffice to say, mine is below oil level.
Joffy,
I haven't got a new cam cover, so have no idea what you are talking about .
Im having the boys at Pro alloy make me a tank similar to the one pictured above for the block as the zetec runs a bretaher on the block this will utilise the same fittment but be larger with the take offs to sump etc.
The top outlet will then flow to a catch tank which will be located under the scuttle and link to the cam cover which is sheilded directly under the take off to stop oil spraying up.
For the catch tank itself and all associated pipework is -10 sufficant.
Bear in mind that when the engine breathes its NOT just oil vapour, its mixed with crankcase gasses that include other chemicals too, including water, so putting it back into the sump introduces these contaminents into your oil, so from that point of view, taking it off to a catch tank and then replacing it with new oil rather than letting that nasty sludge back into your engine is a "purer" way of doing it.
Personally on my YB though, despite that, I put it back in the sump cause its less effort to maintain and less likely to run out oil if it breathes a lot, as shit oil is better than no oil, and I just change the oil reguarly to remove the contaminents.
The impurities/condensation are burned off (providing your oil goes above 100°C) and escape out of the vent to atmosphere. Along with frequent oil changes anyway, you should never have an issue with this (I never have).
The impurities/condensation are burned off (providing your oil goes above 100°C) and escape out of the vent to atmosphere. Along with frequent oil changes anyway, you should never have an issue with this (I never have).
Happens to a certain extent with regards to the water but not quite to the extent that you are implying, it would be nice if it really did just perfectly distill like that though.
But bear in mind those crankcase gasses also contain carbon, and last time I checked, that doesnt boil at 100 degrees
Happens to a certain extent with regards to the water but not quite to the extent that you are implying, it would be nice if it really did just perfectly distill like that though.
But bear in mind those crankcase gasses also contain carbon, and last time I checked, that doesnt boil at 100 degrees
Last time I checked, a breather did not remove the carbon content from the oil .
I'm not saying that this breather is magical and negates the need for as many oil changes as any other breather .
Last time I checked, a breather did not remove the carbon content from the oil .
I'm not saying that this breather is magical and negates the need for as many oil changes as any other breather .
Mike, the blow by gasses contain carbon and oil vapour, if you punt them off into a breather, allow them to settle, they mix, then you let it run back into your engine the carbon gets into your oil.
How do you think it gets from the chamber to the oil in the first place if not via blowby gasses?
This is why i can hardly ever make up my mind as to what prodcuts to buy
You listen to one bit of advice and recommendation and then someone else throws something into the equation that makes you think twice. Both what Chip and Mike are saying is correct so do you drain back to the sump with contaminated oil or not
Mike, the blow by gasses contain carbon and oil vapour, if you punt them off into a breather, allow them to settle, they mix, then you let it run back into your engine the carbon gets into your oil.
How do you think it gets from the chamber to the oil in the first place if not via blowby gasses?
But this mixes back with the oil in the breather and returns to the sump, it is only the condensation that goes to the catch tank, so whichever type of breather arrangement you use, the carbon gets back into the oil....
Last edited by Mike Rainbird; 19-05-2008 at 01:43 PM.
But this mixes back with the oil in the breather and returns to the sump, it is only the condensation that goes to the catch tank, so whichever type of breather arrangement you use, the carbon gets back into the oil....
It doesnt return to the sump if there is no return to the sump on the breather, only to a catch tank and then atmosphere
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19-05-2008, 10:05 AM
even though im not losing any water