Crankcase pressure

[Ben.lopo]

Hey guys does anybody know if a fmic would cause crankcase pressure without a remap ect ? Thanks Ben

[Jezza-7]

Would cause crankcase pressure?

Dont understand what you mean? You will always have crank pressure.

[Ben.lopo]

Sorry I'm getting a lot of oil out of the breather pipes

[z3i]

Theres only one coming out of the back of the block and goes back into the BRV pipes
you sure its not oil seeping through a charger seal?

if there is alot of crankcase pressure, start the car and take the dipstick out, if there its crap loads blowing out then yes its too much pressure, if not then its more than likely the charger seals

[brownysblower]

Crankcase pressure is caused by worn piston rings or head gasket failing to an oil way and not charger seals

[Matty!]

Crankcase pressure is caused by worn piston rings or head gasket failing to an oil way and not charger seals

Or an oil catch can with too small diameter hose.

[AdzCM]

Crankcase pressure is caused by worn piston rings or head gasket failing to an oil way and not charger seals

Ben, where exactly do you mean? - Taylor is right in saying that there is only one crankcase breather pipe that comes up from the back of the block which is tee'd into the boost return pipes to the charger. Are those the pipes you're on about?

Oil in the charger pipes could mean the charger seals are done. At least that's was what was told to me years ago when I saw oil in mine.

I was also told to post a pic. It will help people see how much oil you mean and where.

To your original question. I don't see what a front mount would have to do with crankcase pressure, so no. I fitted a front mount to my charger setup and I still got the tiniest about of crap in my catch tank.

[Ben.lopo]

Hey thanks guys sorry I know there is only one breather pipe off the back of the block , yes that's the one I'm on about I have cleaned out the pod and I have a 1inch pipe coming off it , it's not oil seals in the charger and at one point I had smoke coming out of the breather pod when the engine had only been on for a second, (and I don't have the brv I've got boost return mod)

Right start again sitting at say 70mph on m1 only doing a 19mile trip and getting dash light and beeper come so I stayed at 70mph and then nothing beeper and light stop and she drives fine done this every night this week . But after having a look at the pod and pipe. took the push fit pod off the next day and had smoke coming out only after moving up the drive to jack her up I could see oil had been coming out but the smoke was coming from inside the block and not from oil being round the block any help or ideas  thanks Ben

[AdzCM]

Is your catch tank filling up really quickly?

Oil light/buzzer coming on - have you checked the level of your oil? If your catch tank is filling up quickly then your oil level is obviously going to drop. Sorry if it seems like I'm stating the obvious, but I'm trying to understand what you mean.

My understanding is that the 'smoke' is just the normal fumes that come out of the block. That's what the breather is for. There will always be positive crankcase pressure due to unavoidable blow-by. The question is, how much is coming out? Your catch tank should be filling up relatively slowly. If it is filling up quickly, it could be that your piston rings could be badly worn. There wil already be a mist of oil in your block and an increase in blow-by could be forcing all of the oil out along with the blow-by. It could also just be that you are running that much power, the crank webbing is throwing oil out of the breather. But you said 'smoke' i.e. fumes, so I'd say its normal unless your catch tank fills really quickly.

Does that help at all? Otherwise I still don't know what you mean.....

[Ben.lopo]

Thank you so much for explaining , I found oil all over the breather where the pipe meets the pod on the block and the oil level was just under full so I fitted a clip the conection and a bottle to the other end with loads of holes in the top , in the last 2 days maybe a drip of oil in the bottle , I think it's the power I'm running would having a big fmic not help

[AdzCM]

I found oil all over the breather where the pipe meets the pod on the block and the oil level was just under full so I fitted a clip the conection and a bottle to the other end with loads of holes in the top

Not having a circlip on the pipe coming off the pod explains why the pod was covered in oil.

The bottle with holes in it is ideal. That's what I had done when I had the supercharger. A few drops sounds completely normal to me. Wouldn't worry about it.

The buzzer going off when the oil is just below full doesn't makes sense though.

[Ben.lopo]

Cheers adzcm only thing with the beep and oil light I can think off is the oil pump is on it's way out

:-s

Cheers again mate

[brownysblower]

if your head gasket has gone to the head bolt nr alternator you will loose oil pressure to cylinder head setting off buzzer and pressuring crank case

put a gauge on oil pressure switch point on cylinder head or replace pressure switch
oil pressure is more worrying than crank case pressure !!!

[Ben.lopo]

I've done the head gaskit not 6mths ago and changed oil switches last week just done an oil change and drove 15miles the light and beeper won't stop now

[brownysblower]

Check the bar value on old switches
You may have got wrong ones