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The 1.3 Turbo Battle####

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@jen319
 
Ahhh not a good sign. Oil in the inlet manifold and inlet ports. @frank & anyone else. sorry to ask, you are no doubt busy with azzydots project advice. Have you seen an inni like this and had cause for concern.
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I do remember the possibility of over filling the oil on the last engine. Probable cause ?
 
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stripping the old engine of the rest of the important stuff. I couldn't get crumpets :( mainly because I forgot. But we has zis
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I was blowing oil smoke out when she was running before. Ring lands no doubt. Possible oil vapour from the engine bay being taken back in the engine? Oil settling on the inni Mani?
 
Ah but not on this setup. It goes to a catch tank on the breether and the pcv is blocked. Possible turbo seals? Can they bleed in a scenario of overfilling?
 
SirChris said:
See previous post... I think I had a moment of actually understanding what the hell I am on about.. Rare.. Need to be careful lol.
Click to expand...

Ahh sorry mate, mine burns a little oil and its setup the same as u with a catch tank. I think the lack of a vacuum on the pcv can cause too much pressure pushing oil past the rings ? Was this the problem Paul (Pollyp) was having?
 
Skinner_87 said:
Ahh sorry mate, mine burns a little oil and its setup the same as u with a catch tank. I think the lack of a vacuum on the pcv can cause too much pressure pushing oil past the rings ? Was this the problem Paul (Pollyp) was having?
Click to expand...
Yea his home made catch tank (motorbike filter?) created too much resistance..
I know little about cg engines... is it possible to reroute the the pcv through the catch tank too?
 
SirChris said:
I was blowing oil smoke out when she was running before. Ring lands no doubt. Possible oil vapour from the engine bay being taken back in the engine? Oil settling on the inni Mani?
Click to expand...

yes when my cyl #3 ringland fractured back in Feb, it misfired like a scoob, smokey exh, catchcan totally milky, inlet mani and all the piston tops full of oil.

seems the blowby is forced past the ringland fracture, pressurises the crankcase,
quickly forces the crankcase gases plus carrying loadsa oil vapour/spray out of the PCV n sucked into the inlet mani and into the cyl (during coast, idle) or out of the rocker cover, into the catchcan, and remaining oil into the turbo.
 
h701micra said:
Yea his home made catch tank (motorbike filter?) created too much resistance..
I know little about cg engines... is it possible to reroute the the pcv through the catch tank too?
Click to expand...

kinda yes n no.

1. The oily forged piston top is prob due to very slack oil ring tension (gonna fix that soon),
2. I accidentally plumbed the oil filter catch can backwards so the 1way valve bunged the crankcase up. sorted now
3. The massive oil leak captured on cam was actually caused by not sealing the timing chain side cover plate properly so the big gap allowed oil to pour out at high revs and further accelerated by the backwards fitted catchcan

2+3 is sorted and now I'm fixing issue #1 soon
 
Ta for all the input guys. Problem is the pcv is blocked. And the breather goes to catch can and catch can to open air in the engine bay. Have is missed something? I cani see why I would be getting oil in the mani. See only thing I can think is turbo. Sorry if I have misunderstood something.
 
Most them dont know when you aint got a pappa, and muma aint their to cook your last suppa,hungry like some hedge hog living of a cuppa or a packet of crisps you stoopid m---f--'s
,
,
,
new shhhhhhh:) fresh out a box
 
pollyp said:
yes when my cyl #3 ringland fractured back in Feb, it misfired like a scoob, smokey exh, catchcan totally milky, inlet mani and all the piston tops full of oil.

seems the blowby is forced past the ringland fracture, pressurises the crankcase,
quickly forces the crankcase gases plus carrying loadsa oil vapour/spray out of the PCV n sucked into the inlet mani and into the cyl (during coast, idle) or out of the rocker cover, into the catchcan, and remaining oil into the turbo.
Click to expand...
h701micra said:
Yea his home made catch tank (motorbike filter?) created too much resistance..
I know little about cg engines... is it possible to reroute the the pcv through the catch tank too?
Click to expand...
Skinner_87 said:
Ahh sorry mate, mine burns a little oil and its setup the same as u with a catch tank. I think the lack of a vacuum on the pcv can cause too much pressure pushing oil past the rings ? Was this the problem Paul (Pollyp) was having?
Click to expand...
So with blocked pcv and breather going to the catch can .. Is it reccomended that I need the exit of the oil catch can goes back to the inlet Mani. So the crank requires a vaccum to help with expansion of the oil control rings?
 
That's what I'm hoping to do Chris, though I thought it was more to do with pressure inside the engine pushing oil past the rings. When warm on idle there's a heavy oil mist from the catch can. Major panic on last years sprint when queuing when someone pointed to my bonnet and shouted fire!!
 
metaphorically, think of the crankcase as a busy chip shop kitchen and the PCV circuit as the kitchen ventilation extraction fan and the engine cover breather port as the kitchen window and the catch can as the cold window glass.

if we unplug the pcv from the mani (turn off the kitchen extraction fan),
the heavy soup of combustion blowby, water vapour and oil spray/mist just hangs around the crankcase (like the oil fryer emitting loads of steam n oil vapour while cooking chips)
until enough blowby volume slowly pushes the mist to escape via the easiest open path straight out the breather port (dense steam vapour from cooker engulfs the kitchen then flows out the window)
that dense oily watery vapour goes through the cold catch can n condenses most of the water and oil vapour (steam and oil condensing & running down all over the cold kitchen window)

the engine parts (shop customers) won't be happy that all that dense vapour in the crankcase (cooker steam pouring from the kitchen to the customer area) is contaminating the oil and forming acidic conditions n sludge (poisoning n gassing the customer reducing their lifespan)
 
pollyp said:
metaphorically, think of the crankcase as a busy chip shop kitchen and the PCV circuit as the kitchen ventilation extraction fan and the engine cover breather port as the kitchen window and the catch can as the cold window glass.

if we unplug the pcv from the mani (turn off the kitchen extraction fan),
the heavy soup of combustion blowby, water vapour and oil spray/mist just hangs around the crankcase (like the oil fryer emitting loads of steam n oil vapour while cooking chips)
until enough blowby volume slowly pushes the mist to escape via the easiest open path straight out the breather port (dense steam vapour from cooker engulfs the kitchen then flows out the window)
that dense oily watery vapour goes through the cold catch can n condenses most of the water and oil vapour (steam and oil condensing & running down all over the cold kitchen window)

the engine parts (shop customers) won't be happy that all that dense vapour in the crankcase (cooker steam pouring from the kitchen to the customer area) is contaminating the oil and forming acidic conditions n sludge (poisoning n gassing the customer reducing their lifespan)
Click to expand...
Do you know what Paul.. I bloody love you.
It makes sense now. Thank you mate really appreciate that. So the pcv I should go to the back of the Mani. If I have got it right I put the catch can in between that then. Just put a filter on the breather. So does the vaccum help with the oil control rings?
 
Skinner_87 said:
That's what I'm hoping to do Chris, though I thought it was more to do with pressure inside the engine pushing oil past the rings. When warm on idle there's a heavy oil mist from the catch can. Major panic on last years sprint when queuing when someone pointed to my bonnet and shouted fire!!
Click to expand...
Ha oh dear I bet there was panic. So catch can between just helps stop oil getting back in to the engine. But gets the gasses back in the combustion process and shooting out our bums.
 
the pcv is under full vacuum and boost pressures chris (ranging from -1 to +1 bar)
the breather on the other end of the cam cover is only under crank case pressure and airfilter vacuum tho (far lower pressures)
i just vent that low pressure pipe to the corner of the engine bay (to monitor any oil spray if a ringland ever lets go :))
 

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