Bore wash -updated

[blackie_2k5]

well its got a new bottom end so i know its not that lol

i know what your saying buddy...normally cracked old stems do that..these were fitted new when i rebuilt the head..but do remember one of the springs fired off and had to refit it

alot of times once the oil is up to temp and thinned down..the high vacuum sucks the oil past the stem seals..which i think is whats happening

it could still be the turbo..but i have a spare here anyway to try..i just think its the stems tbh

[adzvtr]

I know how ur feelin dude. I was at a loss for months and it was emvarressing putting my foot down with all the smoke lol. Hope it gets figured out sokn m8. Dont give up

[blackie_2k5]

Said smoke... Is ten times worse when driving a let foot off and back on
Edit- upload failed

[gazza808]

Doesn't add up,

I've seen engines run with no stem seals that only smoked the tiniest amount,
I think something else is at fault.

[blackie_2k5]

I have a spare turbo

I'll try it

New bottom end.. Can't be a venting issue as it ran fine for a year with same set up

[blackie_2k5]

To add another small update to this.. Car failed mot this morning.. No surprises there

When driving it it smokes.. If you pull over and blip the throttle it smokes..

When left on the ramps running for a while it doesn't smoke at all.. And can be revved with no appearance smoke :/

[jones91]

fuck me what an absolute head twist...... ive kind of run out of ideas, but do you reckon theres a small chance youve bought a fucked bottom end? if its been left running for a while and then revved with no smoke then id say its a good chance its a stem seal..... on the old bottom end did the smoking ever get worse or did it stay at a constant level?

Do you think you could just be burning off the old oil left in the exhaust system from the previous engine?

edit: just realized ive just asked near enough the same questions as whats been asked in your progress thread

[blackie_2k5]

indeed mate...well ive got the old turbo off..still not convinced this is my prob..looking at the EX turbing its all black soot..but behind it i can see fresh oil..this means nothing as if it IS stems..it will still come through that way..however wobbling the turbine shaft does indicate lots of play..and squelches with every movement lol

this was this morn outside test centre:





this was a bit later when i went back for restest but the cunt was shut :/





this was when i got back to work:

[blackie_2k5]

(Tappets havent been adjusted yet hence noise)

[axsaxoman]

you need to strip it find the problem -broken rings? rings seized in piastons due to lack of good oil (thinned down by over fuelling )
get it stripped .
looks alot more srious than just rings not sealing

do a clinder leakge test before stripping that will tell you if it is piston/bore problems and nor something else confusing the diagnosis.
If its a 16v and you have swopped cam covers to plastic type and or have used a jp4 head with alloy covers then it could be the cam breather holes don,t line up --causing crankcase to pressurize.
do you have lots of breathing from crankcase breather pipe on the back cam cover breather?

[blackie_2k5]

It's a totall new bottom end John

Same head, same turbo, head was rebuilt prior to fitting to old block, done 60 miles and started smoking, over a few weeks it got to the
The stage it is in the vids

So I put a new bottom end in it.. Started up.. Soon as it warmed up that's what happened ^^^^

It's an 8v running standard rocker breather with no crank breather.. Ran this way for a year with no problems.. So don't see why all of a sudden it should change.. Nothing is blocked

[luthor1]

Dont mean to be a broken record but still smacks of exhaust side oil coming from turbo can you remove the turbo put stock
Manifold on and warm it up?

[blackie_2k5]

I have the turbo off, will be replacing it later

There is a small amount of fresh oil behind the turbine on the ex side.. But even if it were coming out of the engine it would have to be there

[luthor1]

Fresh oil from the engine wont be in the exhaust, the combustion would have burnt it, fresh oil in the turbo exhaust side would only be from the turbo

[blackie_2k5]

Not at the rate it's leaking mate lol

When I pulled the head off the old engine there was a few pools of oil on the cylinders.. Still have no explanation of how this came to be here if I still have smoke

[luthor1]

What if the old engine had died, *and* the turbo was in poor condition? Now you replaced the bottom end but the turbo is now showing up?

The only real test is to fit a stock manifold back and block the oil feed to the turbo, and run her up Is that a test you can perform easily enough?

[blackie_2k5]

No mate I don't have a manifold or an ecu I can run it on.. Can't see it running at all on the turbo map

I'll try the other turbo on Monday, was gonna do it tonight but I have lots to do before Trax and the Saxo 100% won't be there so I'll have a few days off and it might calm me down a bit

Spent most of my week off working on it and fee like I've been totally robbed tbf

[luthor1]

The 7psi turbo map should run if perfectly, that's no problem as it should know how much air is going in, and if not I can remote in and sort that no problem!

[blackie_2k5]

I'll try the new turbo and see what happens, it's pretty much ready to bolt on now

Will move from there afterwards

[boz]

gutted for you matey, if i was home i would of been over to lend a pair of hands. im back on wednesday night and dont go on my jollies until the 10th, so if you need a hand over a few days feel free to give me a shout on facebook, wont be a problem ;D. i know whatits like, feels like you constantly banging your head of a wall lol. helping out wont be a problem, only down the road ;D.