I am curious about the CNK pistons.

I would like to know 3 things.

1. The type of Hyper-u alloy you are useing.

2. Your current rated HP for the piston.

3. Pictures of the piston as well as a specs. I would like to know your location of the rings.


Sorry for the indepth specs.But I want to make sure it is the proper piston for my project.


thank you.

 

Well to my only knowlege the pistons used for the turbos are suppost to lower your HP ratio for to much compression will blow up your engine in turbo applications. I think its like a 8.5:1 ratio. Unless the pistons raise the compression to something like 13:1 then you will hardly notice. 13:1 will give you probably 7 percent increase.

[ February 27, 2003, 06:21 PM: Message edited by: Aoshi ]

 

Heh...Yes I know.


I would like my question answered by someone from CNK who knows the specs on the pistons and can answer my questions.


thanks.

 

Aoshi he's asking type of alloy meaning what blend of aluminum and other metals wich decide how strong it will be and how it will expand and dissipate heat and such

Shadohh i think he has said max 300 HP

 

The whore is back.

There are many grades of aluminium with each grade possessing their own specific qualities in diferent proportions[ie. shear tolerance, how ductile they are, cycles to failure under compression loads, shear loads, torsion loads etc of a set method of construction for each grade] examples of aluminium grades are:

1050,
5754,
5083,
6082,
2017,
7075[yeh this one is commonly selected for bike tubes ]

The material of a design is selected by an engineer[metallurgical]according to the task the part has to perform.

More information can be had if the supplier replies with the appropriate grade and perhaps blend[if this is so]of alloys chosen for the part. Best description and with research the customer can choose the material that best suits his/her application.

I am also interested in the material grade of CNK's products, and I hope that a reply can be had.

 

The alloy is a 6061 T66 Aliminium which is cast to a VERY high quality finish with a vacuum pressed spin casting process.

The piston design is very strong and the crown is around 6mm thick - the pistons are rated ti handle 300HP --- they are currently handlijng ALOT more that this in Bat Lords car which makes 258WHP and there are no problems, I have tested these pistons to handle over 300WHP and they proved to be safe to run at this HP level - BUT I do not recommend going above say 280 - 300WHP with these pistons just to be on the safe side.

Besides 300WHP is ALOT of power if you can keep it on the ground!

The piston rings I supply with these piston are alot stronger and thicker with a single oil ring design.

No other specs will be given at this stage - sorry.

 

6061 Aluminum Alloy (Magnesium and Silicon
mix)? It is the best choice for intake manifold and inter-cooler plumbing due to the weldability and formability of the alloy.

But being heat treated can also be used for piston.


I am confused thou.. When is 258 > 300 ??

Also.

Are the pistons in batlords car the exact pistons in every spec. That you are providing in your kit?

[ February 28, 2003, 11:10 PM: Message edited by: Shadohh ]

 

Well his point is to not push the pistons to the limit so he suggests staying somewhat below the limit range to be sure. Yes 258<300 but why push your car to the 300 if that could cause them to break.

 

I think the 300 hp he is mentioning is rated in the crank.

 

Hes saying they are rated for 300whp.. and not to push them farther.

Least thats what I gather.