Blue smoke on a cold start. Forged pistons

[Gullzter]

Your engine builder should not be an engine builder if he has re-used old rings!

[aussieGT]

Gee, if this bloke didn't have over 600 posts i'd call out troll.

But used pistons and rings?? Its not a freakin lawnmower!

[GreddyMR2]

I don't see a problem fitting used pistons, if they are good, but used rings were a big fail... I think engone builder told me they are good and so we reused them.

[MR2 Rich]

Is this the car that is 2 cars welded together?

[craig]

Is this the car that is 2 cars welded together?

Used forged pistons, fine. Re-used rings on an engine rebuild -

[GreddyMR2]

Is this the car that is 2 cars welded together?

Yes it is (actually, 3 cars). But this topic is not about this.

I will complete engine brake in and will see the results, but probably I will still need to get the car back to the engine builer...

By the way, is it possible to get rings according to piston sizes or I will have to buy complete kit with pistons? :/

[craig]

I believe you can get new rings for a brand of forged pistons. When I was going to go forged, I knew I could get new rings and gudgeon pins from JE.

[GreddyMR2]

I use Wisecos, I suppose I will have to look somewhere in USA...

[slipping clutch]

Finish breaking the motor in- maybe?- its still not proven its the rings all though that seems the most likely given the information and the technical knowledge of Bob and Ashley. Given that you have put a few miles on the motor now and the issue persists I just cannot see this being just needing to bed the motor in and possibly continuing to run the motor may well do some long term damage? Pull the motor, strip it down inspecting everything and get the definitive reason for the smoke.If nothing else it will save more people jumping on the band wagon and wagging their fingers at you for using the old rings. For those of you who were thinking of jumping on the said bandwagon - don't - its got to be bad enough for the guy to have put all this effort in and have a bad result - hes admitted putting the old rings was a bad thing to do possibly causing the issue he now has and now also realises economising on somethings is the wrong thing to do. Pretty sure he must be at a bit of a low ebb right now so lets not rub his face in it anymore and hopefully lets pull together and come up with some good practical ideas to help resolve the issue.
Off my soap box now

[GreddyMR2]

Thanks for kind words, you are right, I'm really upset now.

Can I inspect the rings doing compression test?
I am starting to hate doing rebuilds and put so much work into car...

And now I will take a glass of whiskey to calm down

[Driftlimits Performance]

Ahh xxxx the bed old rings! If it was me I'd thrash the ass off it full boost and hope. Go slap the engine builder. Tell him if it gets worse he can replace them for you.

[slipping clutch]

Practical bit of advice for you - go to the website of the piston manufacture and find out what rings are available for your 86.5 mm pistons and if they are a stock item or special order - I have looked in the past at new rings for my HKS 87mm pistons should I ever rebuild the motor again and they are available so if its HKS pistons the 86.5mm rings should also be available.
Do your research now though as it may take a while to get them shipped to you and I know you don't want to miss another round of the race series you have entered.

[Gullzter]

I hope its nothing serious dude, in the end of day the engine builder has to recommend what he thinks is best, i am currently getting a forge build and i dont know much apart from my engine builder has alot of experience and good reputation. I let him advise me which was new rings, new gaskets all round, new timing belt and a few other bits and pieces like getting the block stripped and rehoned blah blah.
I have also been advised to use boost to a certain rpm for 500miles before increasing.

I would speak to your engine builder and ask him tp strip it down and rebuild it again as said already, so it doesnt cause any long term damage!
Thats my opinion anyway of what i would do in your situation as its better being safe than sorry

[ashley]

You can buy new rings, they don't need to be Wiseco branded, and don't need to come from the US, so it's not all bad

When you are ready, pull the engine, a quick rehone, measure up of the bores, and a new set of rings and a new head gasket...then build it back up again, everything else should be good to go.

In the mean time just enjoy the car and ignore the smoke while it's cold

:thumleft

Oh- a good ring supplier if you decide you don't want Wiseco's:

http://www.totalseal.com/

[GreddyMR2]

Ahh xxxx the bed old rings! If it was me I'd thrash the ass off it full boost and hope. Go slap the engine builder. Tell him if it gets worse he can replace them for you.

Do you mean full stock boost or about 1 bar? And full rpms?

The good engine builders take lots of money. Bad engine builders do xxxx like this... And I didn't get any recommendations from him. He just did the job himself. I even had to tell him how strong he needs to torque ARP studs, because firstly he torqued as stock bolts (fortunately I asked him about this, because I could also have blown head gasket now).

But before buying the rings I need to know the measures, so I need strip the engine before buying. Anyway, I will have a look where I can get the rings.

And thanks everyone for help!

[MR2 Rich]

Is this the car that is 2 cars welded together?

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Used forged pistons, fine. Re-used rings on an engine rebuild -

If you bodge something it will come back to bite you...

[ashley]

If you bodge something it will come back to bite you...

Helpful comment there mate - kick him while he's down

[aussieGT]

Hans Moleman!

[MR2 Rich]

If you bodge something it will come back to bite you...

Helpful comment there mate - kick him while he's down

Image Replaced With URL For Quote [url]http://i354.photobucket.com/albums/r420/fomoashman333/hans-moleman_zpsd4610fd6.jpg[/URL]

This car just screams death trap/bodge.

[slipping clutch]

If you bodge something it will come back to bite you...

Helpful comment there mate - kick him while he's down

Image Replaced With URL For Quote [url]http://i354.photobucket.com/albums/r420/fomoashman333/hans-moleman_zpsd4610fd6.jpg[/URL]

This car just screams death trap/bodge.

Then go write that on his build thread NOT on a thread where he is asking for help with his motor.