Crank case Breather blowing oil

[dingoinazook]

gday all

i have quite a lot of oil going from my crank case breather into my carby what is this a symptom of
it is a 1.3 litre engine

[want33s]

Copious amounts of oil in the breather to air cleaner could be caused any of three things....
* Engine has been VERY hot and piston rings have lost their tension.
* Engine has done LOTS of km's and piston rings/bore are/is worn out.
* Engine has sucked dirty air and glazed the bores.
Doesn't matter really.. engine is rooted and needs to be replaced or rebuilt.

[dingoinazook]

are high compression rebuild kits any good
i have a 1324 cc engine

[want33s]

check this thread.. same sort of deal as you're in....
http://www.outerlimits4x4.com/phpBB2/vi ... p?t=127759
Dingoinazook has it got a baby?

[dingoinazook]

i rebuilt my engine for about $800 including kit extra tools hone etc
it had 3 badly cracked rings and 2 stretched rings
it runs like a dream now

[want33s]

i rebuilt my engine for about $800 including kit extra tools hone etc
it had 3 badly cracked rings and 2 stretched rings
it runs like a dream now

Stretched and cracked rings indicate excessive heat...
Did you sort the overheating/cooling issue as well?

[dingoinazook]

it dosent have one i have recently bought it so it may have been fixed already
but any way i put a 14" thermofan with thermostat on it and got rid of the rubbish engine fan and new t/stat hoses rad cap and pressure tested it

[want33s]

but any way i put a 14" thermofan with thermostat on it and got rid of the rubbish engine fan and new t/stat hoses rad cap and pressure tested it

OH... OK then
Some people beleive thermo fans work better than the factory tried and tested mechanical setup.

[GRPABT1]

It depends on alot of factors. A thermo is better (assuming it's a well set up good one) when the engine is doing bugger all revs and also has flexabilty of being able to be turned off. Not to mention the 2 odd HP you save from converting engine power loss to electrical drain.

BTW a little off topic but the twin thermo fans in my commy flow 3200 CFM and the engine fan at peak CFM flows 2500.

[dingoinazook]

the thermo fan is setup to pull and feels like it pulls twice the air than the factory one
i rigged it up to run direct off battery so it can still run when the engine is turned off this combats heat soak and i have riggged up an overide switch on the dash for the deeper water crossings

[suzimad]

Have you checked the PCV and its hoses ?

PCV stands for positive crankcase ventilation , if it or the hoses are blocked the engine will try to pump oil out a few places... otherwise if that is fine , yes it is caused by blowby past the pistons..

[want33s]

Have you checked the PCV and its hoses ?

PCV stands for positive crankcase ventilation , if it or the hoses are blocked the engine will try to pump oil out a few places... otherwise if that is fine , yes it is caused by blowby past the pistons..

I rebuilt my engine for about $800 including kit extra tools hone etc
it had 3 badly cracked rings and 2 stretched rings
it runs like a dream now

[dingoinazook]

yes i replaced the pcv valve and even to double check i fitted a cheap crankcase vent filter direct to the rocker cover

[watty]

Check the retaining screws that hold the rocker shafts are still in place. They can fall out and allow oil to squirt direct into breather on the rocker cover and if they get under the cam, a lobe is capable of pushing the screw through the head into the water jacket.