Hypereutectic pistons??

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13bsigma
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Hypereutectic pistons??

Post by 13bsigma »

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... 0469446243

Would $200 be a good price for these? What are they worth. i'm not going to bid, just curious as i know tr11ky has them in hiis car and would like to go fast like tr11ky hahahaha

cheers guys
1978 GE sigma 57,000kms the toy called silvia. comming to the Gold Coast soon.
1978 GE sigma 87,000kms spare parts for the toy
1996 suzuki baleno turbo. $32,000 invested in it. $22,000 in the engine. $10,000 in sound
1996 suzuki baleno GTX. getting shaved and resprayed soon and receiving turbo engine
1980 GH sigma AKA JET.51G 18 PSI of T04 injected power.
Billsy
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Re: Hypereutectic pistons??

Post by Billsy »

i used these in my build aswell. nice thick ring landings, unlike others i have seen
Insert witty one liner here -->
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TUFSIG
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Re: Hypereutectic pistons??

Post by TUFSIG »

i have these in my scorpion and they take 17psi daily with no dramas lol
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Boost Is the Only Way
1984 GK Sigma GSR, 2.6 EFI Turbo
1992 Aus Delivered 3000GT Twin Turbo
1984 GK Sigma GSR Stocka

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JimmyG
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Re: Hypereutectic pistons??

Post by JimmyG »

Great with dealing with big heat and load but will crack up in a big way with det.

Good tune and your not going to have a stress with them.
Cars: 95 Wrx, 77 Galant, 73 Galant.
13bsigma
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Re: Hypereutectic pistons??

Post by 13bsigma »

oh. i heard it was the opposite?? bad with high boost/high temp, but strong otherwise. .

oh well.
they went for $81!!! bummed i didn't have any money to bid :(
1978 GE sigma 57,000kms the toy called silvia. comming to the Gold Coast soon.
1978 GE sigma 87,000kms spare parts for the toy
1996 suzuki baleno turbo. $32,000 invested in it. $22,000 in the engine. $10,000 in sound
1996 suzuki baleno GTX. getting shaved and resprayed soon and receiving turbo engine
1980 GH sigma AKA JET.51G 18 PSI of T04 injected power.
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JimmyG
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Location: Bendigo, VIC

Re: Hypereutectic pistons??

Post by JimmyG »

The biggest drawback of adding silicon to pistons is that the piston becomes more brittle as the ratio of silicon is added. This makes the piston more susceptible to cracking if the engine experiences pre-ignition or detonation.

The up side being lower thermal expansion and resistance to heat.

Look at it this way. They are stronger than nomal cast pistons but weaker than forged pistons. :)
Cars: 95 Wrx, 77 Galant, 73 Galant.
webby
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Re: Hypereutectic pistons??

Post by webby »

Cheaper than forgies, too :thumpsup:
I'd rather spend whatever a good set of hypereutectics cost and still be able to pay shit
off, save for rego and eat than blow my budget on a cheap set of forgies
-Josh.
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Daily: 7/96 EF Falcon, 4.0 SOHC, BTR95LE, 3.45:1 LSD/Lukey extractors, full 2.5” exhaust, EL intake, Tickford snorkel, 87DA cam, AU injectors, shiftkits.com.au single stage kit. PB 14.93@91mph.
Project: Red '81 Scorpion-http://www.sigma-galant.com/viewtopic.php?f=46&t=11889
13bsigma
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Re: Hypereutectic pistons??

Post by 13bsigma »

$81 is cheaper than normal pstons go for!!! bummed i am so pov and couldn't bid

a mate of mine is buying 'kermit' the green GE scorp off me for $800 soon :) that'll sort everything out. hopefully he can come on the next cruise with it :D that would be awesome. he came in my passenger seat on the last cruise :)
1978 GE sigma 57,000kms the toy called silvia. comming to the Gold Coast soon.
1978 GE sigma 87,000kms spare parts for the toy
1996 suzuki baleno turbo. $32,000 invested in it. $22,000 in the engine. $10,000 in sound
1996 suzuki baleno GTX. getting shaved and resprayed soon and receiving turbo engine
1980 GH sigma AKA JET.51G 18 PSI of T04 injected power.
lpgalant
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Re: Hypereutectic pistons??

Post by lpgalant »

those pistons rnt hyperutectic in the pic, there acl duralite, standard replacements, ive used them to, my 2 cents worth lol
69 vf valiant coupe 225 efi turbo
74 gc galant 2.6 stroker 3.0
lpg c10 9 inch gt 4088 roller
13bsigma
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Re: Hypereutectic pistons??

Post by 13bsigma »

oh. ok. glad i didn't bid then haha
1978 GE sigma 57,000kms the toy called silvia. comming to the Gold Coast soon.
1978 GE sigma 87,000kms spare parts for the toy
1996 suzuki baleno turbo. $32,000 invested in it. $22,000 in the engine. $10,000 in sound
1996 suzuki baleno GTX. getting shaved and resprayed soon and receiving turbo engine
1980 GH sigma AKA JET.51G 18 PSI of T04 injected power.
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TUFSIG
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Re: Hypereutectic pistons??

Post by TUFSIG »

webby wrote:Cheaper than forgies, too :thumpsup:
I'd rather spend whatever a good set of hypereutectics cost and still be able to pay shit
off, save for rego and eat than blow my budget on a cheap set of forgies
forgies are worth it if you want big power aka over 220rwkw thats prob the limit of hyper pistons
they are worth it and forgies are only 8 to 900 bucks i mean thats cheap compared to some of the other motors on the market
just a thought
lpgalant wrote:those pistons rnt hyperutectic in the pic, there acl duralite, standard replacements, ive used them to, my 2 cents worth lol
man always with your 2 cents , what about 5 cents next time man i need more cash :P
TUFSIG
Boost Is the Only Way
1984 GK Sigma GSR, 2.6 EFI Turbo
1992 Aus Delivered 3000GT Twin Turbo
1984 GK Sigma GSR Stocka

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TUFSIG
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Re: Hypereutectic pistons??

Post by TUFSIG »

13bsigma wrote:oh. ok. glad i didn't bid then haha
how much power do you want to get ?
man if you have the cash and are willing to save just go forgies
worth it

for the security factor
TUFSIG
Boost Is the Only Way
1984 GK Sigma GSR, 2.6 EFI Turbo
1992 Aus Delivered 3000GT Twin Turbo
1984 GK Sigma GSR Stocka

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13bsigma
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Re: Hypereutectic pistons??

Post by 13bsigma »

i want 300 to 350 RWKWS (H) so forgies it will have to be lol. jet is punching about 200 maby a bit under on standards i believe as she doesn't rattle on cold startup.
1978 GE sigma 57,000kms the toy called silvia. comming to the Gold Coast soon.
1978 GE sigma 87,000kms spare parts for the toy
1996 suzuki baleno turbo. $32,000 invested in it. $22,000 in the engine. $10,000 in sound
1996 suzuki baleno GTX. getting shaved and resprayed soon and receiving turbo engine
1980 GH sigma AKA JET.51G 18 PSI of T04 injected power.
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rx22nv
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Re: Hypereutectic pistons??

Post by rx22nv »

Hey fellas, As I have stated many times, I am currently using ACL hypereutectic pistons in my car and I do Have roughly 300rwkw or 388hp in the old speak.

In my experience, These pistons do not crack when there is detonation. They melt the edges away - meaning that if you have bad tuning, or something fails and there is a lean out - the thing won't shatter like a forged piston and ruin your bores.

30psi, boost, nitrous, 10 sec passes, powerskids in top gear. I swear by the ACL's
GD Galant Wagon 2.6 T04E powerglide - 10.51@124,
GD Galant Sedan Starion powered
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JimmyG
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Re: Hypereutectic pistons??

Post by JimmyG »

rx22nv wrote:Hey fellas, As I have stated many times, I am currently using ACL hypereutectic pistons in my car and I do Have roughly 300rwkw or 388hp in the old speak.

In my experience, These pistons do not crack when there is detonation. They melt the edges away - meaning that if you have bad tuning, or something fails and there is a lean out - the thing won't shatter like a forged piston and ruin your bores.

30psi, boost, nitrous, 10 sec passes, powerskids in top gear. I swear by the ACL's
Top feed back rx22nv!

Guess there the real deal without the killer price tag. Win win. :D
Cars: 95 Wrx, 77 Galant, 73 Galant.
Paddles
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Re: Hypereutectic pistons??

Post by Paddles »

that is a good reputation for the acl pistons. i have a standard set in my scorpion and never had a problem and i have a set of hyper's in the shed ready for my efi build, starting very soon.
'84 GL Scorp, Mildly Worked 2.6 With Sigma Turbo Setup.
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TUFSIG
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Re: Hypereutectic pistons??

Post by TUFSIG »

bout time paddles
then you can feel real power EFI POWER :P
TUFSIG
Boost Is the Only Way
1984 GK Sigma GSR, 2.6 EFI Turbo
1992 Aus Delivered 3000GT Twin Turbo
1984 GK Sigma GSR Stocka

Image
Paddles
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Re: Hypereutectic pistons??

Post by Paddles »

getting there, now have everything. just have to start building. over a few months.
'84 GL Scorp, Mildly Worked 2.6 With Sigma Turbo Setup.
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