blowing blue/white smoke

[4piknup]

A dry compression test followed by a wet compression test would be real handy now.

But I thinkit will need new rings and a light hone. I think either some rings are wrong installed, rings gapped wide or too narrow.

Do you know the piston to bore clearance? Or was it bored at rebuild?
What was done to the block at rebuild time?

 

[xjokux]

Could it be anything else? Beside headgasket or rings. Atm the rings looks like the culprit.

I don't want to take the pistons if its not the problem but more so I don't want to haha.

 

[4piknup]

can you pop head back on?
dont need intake or exhaust manifolds, old head gasket is fine if its in good condition (bit of grease to seal it if you think it needs it. dry and wet compression test please...

but before you do, ensure valves are sealing tight. tip head on its side and put a bit of kero in ports (enough to cover valves) this will check valve seating. relap any that are leaking and retest. do all intake and exhaust

 

[brisvr4]

Sounds to e like you glazed the bores by idling it way too long and not taking it out to bed in the rings.

 

[BMGTZ]

I would be taking a piston out and checking the rings are installed right way up...

 

[ctrimble92]

Off subject, but it has to be said-

PVC- Poly Vinyl Chloride
PCV- Positive Crankcase Ventilation [valve]

I spend way too much time at work, trying not to slap my boss for confusing the two haha :thumbsup:

 

[Vr4_evopwr]

Im sure there would still be oil in the exhaust if the turbo had a oil spew ! Takes more than 30mins of idle to clear it. Process of eliminations when it comes to cars and you have just dived into the deep end listening to experts

 

[nigel_a]

Im sure there would still be oil in the exhaust if the turbo had a oil spew ! Takes more than 30mins of idle to clear it. Process of eliminations when it comes to cars and you have just dived into the deep end listening to experts

he had it idling for quite a while as i told him it might have been residue in the exhaust, when he drove the car it bellowed smoke, alot more than residue would have caused. the rings havnt been gapped nor has the motor been run in.

 

[Vr4_evopwr]

he had it idling for quite a while as i told him it might have been residue in the exhaust, when he drove the car it bellowed smoke, alot more than residue would have caused. the rings havnt been gapped nor has the motor been run in.

I understand that but pending where the oil came to rest in a exhaust system only when the throttle is opened will you see the smoke. an exhaust cools dramatically after a point and only revs will heat it up causing it to smoke.

glazing bores or running a engine in within 30mins to a hour is a mith and stuff that people write in books. Every engine builder has he's own preference but I have had newly built engines idle on and off for more than an hour with a few blips of the throttle here and there while diagnosing problems or subarooo's that don't like to bleed the air bubbles out of the block and radiator, causing airlocks warming the block up etc. things that make you sweat till you sort it out. Running in a block happens over a period of km's not hours. That is if you even run it in...

I am on the PC now and can finally see the pictures... the bores and head is oil soaked :thumbsdown: Why ?
How much did the turbo actually spew out ? where did it spew out ? into the inlet side or exhaust ?
The question was asked before by Baz is the PCV working properly ? How much blowby was there when you opened the oil cap ?
Why were the rings not gapped ?
It was asked before by a groupie.. were the rings put the right way up ? were the ring gaps spaced out opposite to each other ?
The scratches in the bores how bad are they ? Why are they there ?
Was it over fuelling while it was idling ? that would cause damage, washing the oil off the rings and bores. And a common problem with newly built engines
I read the first post again and it was said that the car was driven in first gear WOT ? Why ?
Was the block honed/machined or checked for trueness ?
And the last question is who put it together ?

So many things you cant solve on a forum. And believe it should be checked by someone that knows what he is looking at.

Sometimes it is better just to pay the labour it costs to put it together... Mechanics are the lowest paid in the industry and that is because everyone thinks they can build hypo engines in their garages. (I might get flamed for this statement but it is true. And it has made me hate my true passion for engines/cars)