Does anyone know where I can get a set of hypereutectic pistons for a 2200 Cavalier. No i dont want forged i am against forged pistons when building a naturally aspirated engine. So if anyone knows where i can get those that would be great and also im looking for flattops.

Did you say hypererotic?

just curious why are you against forged? if you building any type of engine whether it be NA or boosted forged is the best way to go if you looking to make alot of power.

The only hypereutectic pistons for the 2200, that I know of, are stock replacements only. They are made by Federal-Mogul/Sealed-Power and by Silv-O-Lite. The only flat-tops I've seen have been forged.

As for increased compression, using stock replacement pistons, I know on the 2.2, you can zero-deck the block and use a .040" head gasket and a slight surfacing of the head, you can attain a 10:1 CR. I haven't done the calculations on the 2200.

Hypereutectic pistons would be fine up to a 10-10.5: CR for the stock replacements on a naturally asperated motor. I wouldn't recommend anything over 6400 rpm sustained, short bursts above that should be okay (for stock replacements only, after-market heavy duty hypereutectics can go and sustain much higher). This would be the limits on stock rods also, with preparations such as polishing the rod beams, resizing the rods, shot-peening, balancing them and a Magnaflux inspection before and after the work. Anything more than 6400 rpm(N/A) or boosted, use aftermarket rods, such as the Eagle rods, and forged pistons.

Hypereutectics are better at dissipating heat, for reduced sensitivity to detonation. They also reduce piston scuffing and piston noise (NVH:Noise, Vibration, Harmonics in manufactures speak), due to the reduced thermal expansion, hence tighter piston-to-cylinder wall clearances. They are also much more durable than cast pistons. I've seen after-market hypereutectics used in circle track motors with a 12.5:1 CR and turn 7800 rpm. Heavy duty aftermarket hypereutectics are more than durable enough for mild to moderate boost or nitrous(occasional use).

As you can see, I'm a big fan of hypereutectics. They are much more durable than most people give them credit for. They cost less than a forging, in fact cost only slightly more than a cast, if more at all! They are more than durable enough for most all applications listed on JBO(any motor). Now if someone made a heavy-duty hypereutectic for any of the J motors.

Nice info never heard of them maybe I'll look more into them for my build.




In the planning stage for an all American TRD Cavalier.

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Anything more than 6400 rpm(N/A) or boosted, use aftermarket rods...

i disagree with this. pj (da flyin skwirl) is on a completely stock bottom end and is revving to 7500 rpm constantly and sometimes even 7700. he has a lot of upper engine work done but the bottom end is completely stock. he's also running a 14 second all motor car at that.

http://www.taperformance.com/hyperteu.htm