Yellow Oil Light

[northernjim]

Hi,

How does the re-routing of a breather
pipe alter the ''Octane'' rating of the fuel mix ?

Regards,

The Gorilla.

I think its more of a case of ensuring that the oil vapour cannot re-enter the engine, whereas as it's plumbed as standard there is a chance that it could....

[The Gorilla]

Hi,

How does the re-routing of a breather
pipe alter the ''Octane'' rating of the fuel mix ?

I fitted a small Oil Catch Tank on my E30 M3 a number
of years ago, [S54, CSL Engine] but the ''Octane''
rating of the fuel mix has never altered.

Its never had anything in it hence why I did not waste
the money repeating, for the CSL.


Regards,

The Gorilla.

[cantfind1]

Is the s54 engine known to suffer from increased crankcase pressure from 'leaky' piston rings then?

No but all engines breathe. This stops that breathing re entering your clean intake air and gumming up your trumpets,throttle bodies,air rail etc etc. Also any oil that is in that breather won t be going in your airbox etc.

S54 does not/should not breathe much oil if any. Have had mine installed for a year and have not empied it once, in fact the sight tube on the side of the catch can shows no oil, but looking in from the top there is some in there.

[cantfind1]

Hi,

Quote- '' but stops blow by gasses mixing with your intake mixture, which decreases the octane rating of the mixture.''


How ?


Regards,


The Gorilla.

How what?

How does it stop gases going into the intake, well the hose no longer goes into the intake thats how.

Hot gases that come out of the crankcase breather no longer feed back into the intake and mix with cold fresh air. Simples

[rstoughy]

Here you go this is mine, not only keeps intake clean, but stops blow by gasses mixing with your intake mixture, which decreases the octane rating of the mixture.

Notice you also have a dipstick tucked away in there, is that just the regular e46 M3 mod that Tom has mentioned?? :smokin:

[rstoughy]

Oh and.....




does it not come with a catch tank then as standard???

No Jim,
Its just the same sort of set up as any other regular motor, it feeds from that breather on the cam cover over to the airbox where the vapour then gets recycle'd through the intake.

The BIG question though.....is a catch tank a worthwhile addition????

[northernjim]

Oh and.....

God knows why none of you have not fitted oil catch cans yet??

does it not come with a catch tank then as standard???

[northernjim]

Hi,

Quote- '' but stops blow by gasses mixing with your intake mixture, which decreases the octane rating of the mixture.''


How ?

Is the s54 engine known to suffer from increased crankcase pressure from 'leaky' piston rings then?

[The Gorilla]

Hi,

Quote- '' but stops blow by gasses mixing with your intake mixture, which decreases the octane rating of the mixture.''


How ?


Regards,


The Gorilla.

[cantfind1]

Here you go this is mine, not only keeps intake clean, but stops blow by gasses mixing with your intake mixture, which decreases the octane rating of the mixture.

[rstoughy]

No never removed it Baz, only time its been open was while in the garage for its insp II so probably only had a dicht with a cloth.

While i have it apart over the winter i think i'll do the regular M3 dip stick conversion as Tom mentioned.

[sailorbaz]

Regarding your trumpets (ooooerrrr) had you ever removed the airbox before? I cleaned mine last year and then this year when I went in to clean it out again, it wasn't too bad. But I suppose, 4K in a year doesn't really warrant that much regular cleaning for myself.

First time I done it though, around 30K miles when I fitted the ITG Filter, they were black as fook. The guys in the shed fitting the lights thought I was a crazy man with the hoover in the airbox sucking out the dust, dirt and sand. God know where that all come from, but you just never know.

Glad you got sorted with your oil though, might be a sensor on its way out. I was quoted £100 to fit one by the dealers but I doubt it'd be that much if you had it done together with an Oil Service? Warranty though? Hmmm

[Bounce]

Not really Brett, was just below the max line, gave it a splash though anyway and after a run its seems to be fine :smokin:

Nice one.

[rstoughy]

Did it need topping up Paul,or was it ok on the dip stick.

Not really Brett, was just below the max line, gave it a splash though anyway and after a run its seems to be fine :smokin:

[Bounce]

Did it need topping up Paul,or was it ok on the dip stick.