Remote Turbo Setup & Falcon Sixes?

[Crustang to Mustang]

Have you taken the time to read through this thread on turbocharging?

P

Thread 'Selecting a turbocharger for the 300 six'

Mar 26, 2025

One of the first things you often hear is about picking a turbocharger that will spool.
That is not the objective.
The main goal is to pick a turbocharger that is the correct size for the engine and its application.

An engine is an air pump that has a range of airflow from the beginning of its power band to the end of its power band.
The turbocharger's compressor is likewise an air pump that has a flow range from the surge line out to the choke line.

Most of the 300 sixes discussed on this forum are for street use in a truck that works best with a wide power band.
In order to achieve the...

• pmuller9

• 

If you have questions as you read through the thread, please ask.

I think I understand it. You did a great job writing it. I will definitely be referring back to it as I get closer to the build.

 

[pmuller9]

I think I understand it. You did a great job writing it. I will definitely be referring back to it as I get closer to the build.

Take some time to play with the MatchBot calculator in post #1 to help you understand how different things affect power, air temps and so on.
Change the engine displacement to 250 ci inches and have some fun looking at power and torque at different boost levels, engine VEs and intercooler efficiencies along with where you would be on different turbocharger compressor maps.

 

[Crustang to Mustang]

I do have one more question for the time being. I'm going to assume that the stock '69 pistons (this is also assuming that the stock pistons haven't been replaced) are not hypereutectic. This being said, though not as ideal as forged pistons, would hypereutectic pistons at least prevent any possible piston issues I would potentially have with the stock cast pistons?

Also for the sake of learning, can hypereutectic pistons handle more boost than cast pistons? I would assume yes, but I'm learning not to assume with these things.

Would aftermarket cast aluminum pistons even be more durable than the stock cast pistons?

I would appreciate some specific answers as well as "general-rule-of-thumb" answers.

 

[pmuller9]

Hypereutectic cast pistons are stronger than regular cast pistons and are more stable under heat and would handle more boost.
However, because of the high silicon content Hypers are very brittle and more prone to break with detonation.
Aftermarket cast pistons would be equivalent to stock pistons for durability.

Silv-O-lite makes three Hypereutectic pistons for the Australian 250 six that will fit the USA 250 six.
Silv-O- lite 3332H, 3328H and the 3327H.

Does your 250 need to be rebuilt?

 

[Crustang to Mustang]

Hypereutectic cast pistons are stronger than regular cast pistons and are more stable under heat and would handle more boost.
However, because of the high silicon content Hypers are very brittle and more prone to break with detonation.
Aftermarket cast pistons would be equivalent to stock pistons for durability.

Silv-O-lite makes three Hypereutectic pistons for the Australian 250 six that will fit the USA 250 six.
Silv-O- lite 3332H, 3328H and the 3327H.

Does your 250 need to be rebuilt?

I haven't got into that yet. I have to swap it from my old car to this other car so I was gonna wait until it was out of the car to really tear into it. I know that some parts have been replaced because when I pulled the valve cover off, one of the pushrods was marked. I don't know anything further than that.

 

[Crustang to Mustang]

Hypereutectic cast pistons are stronger than regular cast pistons and are more stable under heat and would handle more boost.
However, because of the high silicon content Hypers are very brittle and more prone to break with detonation.
Aftermarket cast pistons would be equivalent to stock pistons for durability.

Silv-O-lite makes three Hypereutectic pistons for the Australian 250 six that will fit the USA 250 six.
Silv-O- lite 3332H, 3328H and the 3327H.

Does your 250 need to be rebuilt?

If I were to buy a new set of pistons, I see that the 3332H has the deepest dish, the 3328H has a shallow dish, and the 3327H is a flat top piston. For low boost applications, the 3328H should be sufficient, correct?

 

[pmuller9]

The Silv-o-lite 3332H piston uses the standard 5/64" ring set and will give you a compression ratio of 6.9 with a standard bore piston of 3.681"
The Silv-o-lite 3328H piston uses the metric 1.5/1.5/4.0 mm ring set and will give you a compression ratio of 8.1 with a standard bore piston of 3.681"
The Silv-o-lite 3327H piston uses the metric 1.5/1.5/4.0 mm ring set and will give you a compression ratio of 8.8 with a standard bore piston of 3.681"

Yes, it looks like the 3328H would be sufficient