Blue smoke on a cold start. Forged pistons

[GreddyMR2]

Today I ispected more with my father. It looks like it's smoking not only when cold...

But now we suspect a bad turbo (it was rebuilt probably by the best turbo service in Lithuania, but even best do mistakes sometimes).

Why we suspect a turbo?
1. If it seals bad, oil is comming to the exhaust over some time and then the oil burns when engine is started.
2. Next - when the engine is hot, it's not smoking when I hold revs, but only when I hit boost or quickly open a throttle. I imagine that if it was piston rings, it would smoke when holding revs as well.
3. And third thing - I hear a weird noise coming somewhere from turbo side. It looks like turbo wings touches its body sometimes. And I hear that noise when boost is around 0.

However there is no oil in the intake pipes. And it boost really well.

How to make sure if it's bad turbo seals or piston rings?

[bobhatton]

Today I ispected more with my father. It looks like it's smoking not only when cold...

But now we suspect a bad turbo (it was rebuilt probably by the best turbo service in Lithuania, but even best do mistakes sometimes).

Why we suspect a turbo?
1. If it seals bad, oil is comming to the exhaust over some time and then the oil burns when engine is started.
2. Next - when the engine is hot, it's not smoking when I hold revs, but only when I hit boost or quickly open a throttle. I imagine that if it was piston rings, it would smoke when holding revs as well.
3. And third thing - I hear a weird noise coming somewhere from turbo side. It looks like turbo wings touches its body sometimes. And I hear that noise when boost is around 0.

However there is no oil in the intake pipes. And it boost really well.

How to make sure if it's bad turbo seals or piston rings?

Take the inlet pipe off the turbo, and see if there is any play in the turbo shaft, it should be very had to feel anything if the bearings are good.

[GreddyMR2]

Yes there is, but it's suppose to be a little. But dad says play is too big. Only side to side play.

However dad called to engine builder, described everyting and he thinks it's rings that cause the problem.

[Driftlimits Performance]

Turbo will smoke during sustained idle.

Rings smoke under power.

Dude, sorry but you know what it is.

[GreddyMR2]

I guess I found replacement rings for wiseco pistons:
http://www.excessiveracing.com/WIS-8650XX.aspx

Should I use these genuine rings or just buy generic rings (from totalseal, for eg.)?

[ashley]

Total seal aren't "just" generic rings- they are rated as some of the best rings out there.

Your choice- probably just go for replacement Wiseco rings

[GreddyMR2]

Total seal aren't "just" generic rings- they are rated as some of the best rings out there.

Your choice- probably just go for replacement Wiseco rings

I hope they will have something in Europe. I don't want to wait a month until I get the rings

[ashley]

Try these guys:

http://www.performanceunlimited.co.uk/

[GreddyMR2]

Try these guys:

http://www.performanceunlimited.co.uk/

I don't see that they have rings for wiseco. But I think it's not a problem to use other brand rings, no?

[ashley]

Give them a call- they might be able to get them in for you quickly.

To be honest- I would just phone Wiseco in the US and get them to send you a set, I've always found them very helpful once you're talking to them

[GreddyMR2]

I will try, thank you

By the way, can I re-use exhaust manifold gaskets?

[bobhatton]

Try these guys:

http://www.performanceunlimited.co.uk/

I don't see that they have rings for wiseco. But I think it's not a problem to use other brand rings, no?

Only use the Wiseco rings, they are made to fit the pistons.
You will have too many problems getting the right sizes rings of another make

[ashley]

Only use the Wiseco rings, they are made to fit the pistons.
You will have too many problems getting the right sizes rings of another make

Disagree Bob- if you are capable of measuring the grooves in your pistons accurately then specifying the right rings is easy, most after market ring manufacturer's will already know what rings you need if you give them the model of pistons you are using...certainly the case for Total Seal.

I'm using totalseal this time round with my CP pistons, they ask you to measure your piston grooves to confirm the dimensions, which makes sure you get the right rings.

[bobhatton]

Disagree Bob- if you are capable of measuring the grooves in your pistons accurately then specifying the right rings

This is where it can go wrong, together with fitting totalseal rings.

[ashley]

Disagree Bob- if you are capable of measuring the grooves in your pistons accurately then specifying the right rings

This is where it can go wrong, together with fitting totalseal rings.

Are you saying there are problems using totalseal rings Bob?

[bobhatton]

Disagree Bob- if you are capable of measuring the grooves in your pistons accurately then specifying the right rings

This is where it can go wrong, together with fitting totalseal rings.

Are you saying there are problems using totalseal rings Bob?

No not at all as long as Totalseal list the make and size of pistons that the rings are to be fitted to.
The fitting is not like any other ring, so lots of care needed

[ashley]

Agreed- they are a biatch to get in the block for starters- most ring clamps won't do it, on the NA I built I had to hand fit them: so much fun

[GreddyMR2]

Funny, I was looking for the rings all over the world when we have wiseco dealers in Lithuania
It will cost around 100pounds and I will get them in a week.

I guess I don't need to look anywhere else.

[GreddyMR2]

I've just ordered the rings.

Please advise me what's more that I need. Only head gasket?

[bobhatton]

I've just ordered the rings.

Please advise me what's more that I need. Only head gasket?

Yes, use a Rev 3 head gasket but you will need to take the sump off.