hypereutectic VS nitrous & some fun at the track!

fitzm65 · Mar 31, 2004

Why is it that ford’s hypereutectic pistons don’t like nitrous? A buddy of mine just got a 125 shot kit for his 02 (a wet kit) and he blew his motor at the track leaving after running a 12.95 @ 111 mph. He forgot that the kit was engaged when he was leaving and the pressure had apparently got to high as the shot went in. I ask only because I know those pistons are weak but nitrous seems like such and easy way to go fast!

I ran a best of 14.5 that night @ 94 mph with a 2.17 60ft. Not to bad for my beat up old mustang! I also raced my other friend’s 01 GT and got the best time for that night with a 14.3 @ 97 and bald tires! He said if there was anyone to beat him, he was glad it was me!

I have to get those sub frames in so I can go out there more often!

geegee · Mar 31, 2004

Forged pistons for racing engines. Hyperutectic for naturally aspirated gas engines in non-blown and non-nitrous applications. Forged require wide tolerances because of unequal thermal expansion. Hyperutectic can use tighter tolerances because of thermal stability; hence getting more mileage and less oil consumption. Each type has its place. Use the correct type for your application.

ForceFed70 · Mar 31, 2004

He probably went lean and that's what ate the pistons.

A good tune, and the proper percautions will go a long way.
I've run MANY bottles of N2O through my engine on CAST pistons. See my sig for engine details. The original plan was to run the cast pistons until they melt and then replace them with something better. That was 5 years and many bottles of nitrous later. She still doesn't even burn any oil...

GaPonyFarm · Mar 31, 2004

fitzm65 said:
Why is it that ford’s hypereutectic pistons don’t like nitrous? A buddy of mine just got a 125 shot kit for his 02 (a wet kit) and he blew his motor at the track leaving after running a 12.95 @ 111 mph. He forgot that the kit was engaged when he was leaving and the pressure had apparently got to high as the shot went in. I ask only because I know those pistons are weak but nitrous seems like such and easy way to go fast

Your friend obviously didn't install his nitrous system very well. He should have installed safeguards to prevent the above from happening. With a good tune, hypereutectic pistons should be able to handle a 125 shot, even with 10:1 compression, or perhaps especially with high compression.

When used properly, with a properly prepared engine, nitrous is very safe and extremely effective.

hypereutectic VS nitrous & some fun at the track!

fitzm65

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geegee

ForceFed70

That's why they call it "dope"

GaPonyFarm

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hypereutectic VS nitrous & some fun at the track!

fitzm65

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geegee

ForceFed70

That's why they call it "dope"

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