Ceramic Coating N/A Pistons for turbo

[ludacris]

Will Ceramic coating standard N/A pistons to handle bolt on turbo prolong engine life.. "pistons cracking".

LudaCris

[awill4x4]

I know they do them for petrol engine pistons but they have a comparatively low compression ratio when compared to diesels especially N/A diesels. Whether the extra thickness on the piston crowns would produce problems with clearances I don't know.
Also on petrol engines they ceramic coat the combustion chamber this helps retain the heat in the chamber rather than transfer it outwards particularly to water jackets on vehicles that may be marginal on cooling.
Talking to HPC or Jet coatings would probably give you some info on the deposit thickness and their recommendations suitable for your application.
I'll be interested to hear which way you go with this and any problems or lack of problems you encounter.
Regards Andrew.

[nastytroll]

its been done on hi hp deisels before chris but cant remember who I was talking to at the time that did it

[KiwiBacon]

It'll help with heat, but not with strength.

Do we know if the pistons crack because they're not strong enough?

[Mrs Ludacris]

It'll help with heat, but not with strength.

Do we know if the pistons crack because they're not strong enough?

I would say that they do crack because they are not strong enough otherwise every factory turbo motor would have to have ceramic coated pistons to start with to help with the heat I am guessing.

I realise high powered turbo diesels are using the ceramic coating but they are also using turbo pistons.

It is for a diesel motor.

LudaCris

[badger]

i was lead to beleive that it was stupid egt's that alot of the high power motors are running that kills the pistons.
i dont kno if ceramic coating them would fix this as then your would just burn the valves out.

im not expert tho.

[Dzltec]

You can ceramic coat the whole combustion chamber, inc valves, this provides a thermal barrier which slows heat soak down. In a turbo application you want all the heat to drive the turbine wheel, not soak into components.


Toughness is dictated by how and what components are made off, ie forged against cast, titanium against steel etc. Then sizing of components to stop breakages like h or i beam rods instead of standard.


Andy

[nastytroll]

dont forget these are alloy pistons so if they are heated too far they will be annealed n go soft. I've seen pistons that have had the caps n skirts burnt off not cracked though. Crack could be a result of over revving

[tweak'e]

Will Ceramic coating standard N/A pistons to handle bolt on turbo prolong engine life.. "pistons cracking".

LudaCris

i assume your turboing an N/A motor, petrol or deisel ?

i would think it would help a bit with petrol motors, even factory motors can come with ceramic coated pistons.

deisel i'm not sure. with deisel the intake air does a fair bit of the cooling which you won't get if the pistons coated. while the cermaic may keep it cool, when the piston gets hot the ceramic won't let it cool down that easly. you would be relying on piston oil spray bar for piston cooling.

also if your only running low throttle a lot (ie normall driving) wouldn't the piston get to cold? piston may not expand, rings not seal well and you'll get lots of blowby. just a thought.

[badger]

cant help to think mab youd be better spending the coin on stronger pistons....................... thats if anyone does them.

[ludacris]

It is a 2H. "diesel motor" I was thinking of looking into who can make a set of turbo pistons for it. Its only going to run 10 pounds and be for work purposes.

LudaCris

[Tiny]

I am led to understand that the 6.2 chev oiler has very soft pistons that crack easily, that is the main reason people dont add any kind of artaficial aspiration, but even without anything they still get small cracks etc, I dont want to turbo it as it produces ample HP and significant torque, but in the case of the pissed and broke would coating new pistons be benefivial

sorry for the hijack, although it is still relevent to the thread

[zagan]

Why don't you hit up AXT, or denzol what they are called, and see what they say.

The diesel engine pistons would be stronger than a petrol motors pistons but if your simply worried about the pistons... shouldn't you also worry about the conrods etc as well?

you should be able to age a set of pistons easy as they only need to be of a certain size won't really matter who makes them as long as they simply fit in.

just go forged pistons, they are heat treated at the smelter.

instead of heat coated, heat treatment would probably be better when thinking about it.

could also goto a wreker and pick up some same size turbo diesel engine pistions as well.

[xenith]

u can buy drop forged ones to suit cheap $1500 and strong