Hyper Utectic pistons?
12-01-2004, 09:03 PM
#1
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Hyper Utectic pistons?
Anybody ever heard of these? My muscle car friends put them in their Small Blocks because you can run wicked tight clearances because they don't expand. They are a type of cast piston with a high silicone content I guess. I was wondering if anybody makes em for Hondas. Maybe Vitara pistons are made this way?
12-01-2004, 09:26 PM
#2
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Re:Hyper Utectic pistons?
Originally Posted by nonvtec
Hyper Utectic pistons
So they are still cast pistons? Eh, I'd have to skip on that one, but I've never heard of these "Hyper Utectic pistons".
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12-01-2004, 09:46 PM
#3
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Re:Hyper Utectic pistons?
Yeah, they are cast but like 20% silicone I guess, I wasn't exactly sure on the spelling 
Pistons only melt because of things getting really hot. A richer mixture and lower compression (8.5:1) would make for a nice little turbo combination. I am probably going to go forged when I build but my friends keep plugging these so I was wondering if anyone knew what they were.
Pistons only melt because of things getting really hot. A richer mixture and lower compression (8.5:1) would make for a nice little turbo combination. I am probably going to go forged when I build but my friends keep plugging these so I was wondering if anyone knew what they were.
12-01-2004, 09:52 PM
#4
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Re:Hyper Utectic pistons?
20% silicone? That doesn't seem like a very good idea? 
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12-01-2004, 10:21 PM
#5
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Re:Hyper Utectic pistons?
Yep I have heard of these. They use a gravity cast mold or some ---- like that or a pressure cast mold. They are good for V8's. thats why they only make them for v8's. I haven't seen anybody make any for hondas nor do I wish they did. I would rather spend the extra $100 on forged.
12-02-2004, 12:28 AM
#6
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Re:Hyper Utectic pistons?
i love it how people who know very little about something are so eager to say it's ----.
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
12-02-2004, 03:37 AM
#7
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Re:Hyper Utectic pistons?
I think some mustangs have hypereutectic pistons stock.
12-02-2004, 07:11 AM
#8
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Join Date: Mar 2003
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Re:Hyper Utectic pistons?
Originally Posted by Deluded
i love it how people who know very little about something are so eager to say it's ----.
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
So you're telling me that a certain piston manufacturer told you that he doesn't make them for imports because the import tuners don't know how to install them?
Get ------- serious dude. That's the lamest thing I've ever heard. You're obviously domestic biased and are blinded by your "good buddy" at Keith Black. I doubt you ever had any conversations with them anyways. If you did, they propbably told you that to get your annoying *** away from their booth with your retarded questions. In ending, your mom is a -----. Have a nice day. 
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12-02-2004, 07:26 AM
#9
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Re:Hyper Utectic pistons?
Originally Posted by Deluded
i love it how people who know very little about something are so eager to say it's ----.
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
they are cast, yes, but are then subjected to a heat-treating process that makes them very strong (though their kryptonite is detonation; and don't drop one as it will break). much like high silicon forged units. on the pro-side: they are very thermally stable so piston-to-cylinder wall clearance is very tight (see less noise, less oil comsuption, less blow-by, etc). i had a very long discusion with a KeithBlack rep at sema (KB is the most well known aftermarket supplier of HU pistons) and asked him WHY DON'T YOU MAKE THEM AVAILABLE FOR IMPORTS?. REPLY (in my own words): because people are idiots and we know there will be a lot of failures before everyone in the import market learns to install them correctly (they require a large ring-end-gap or the top land WILL be broken in short order). a piston is a piston, V8 or honda 4.
yes i have strong feelings about these because they have made me proud in many domestic engines. and they can be MUCH better than $100 cheaper than pos shelf stock forged (offset pins for one thing).
12-02-2004, 08:00 AM
#10
3.0 BAR
Join Date: Jan 2003
Posts: 4,438
Re:Hyper Utectic pistons?
if you guys are needing stronger pistons, straight up forged should be the way to go turbo/supercharged/extreme nitrous apps... Hyperutectics are nice where you dont need the absolute strength of a forged piston but need somthing better than stock
