hypereutectic pistons??

[birdman]

ive heard of people usuing them but where in the world do you get them??? thanks.

[digitaloutsider]

Like most aftermarket parts, they probably don't even make them for the LQ1..

[birdman]

o they make them but i cant seem to find them. ive seen ferios with them, 3.4 swapped of course.

[Genopsyde]

pistons aren't vehicle or engine specific for the most part. They're simply determined by bore size. Find out your bore size, and try to locate pistons from there.

[19Cutlass94]

I believe its 92.0 mm

 

And are you talking about these or something like this?

http://60degreev6.com/Articles/DOHC/Perf/Piston6.jpg

[GP1138]

What are they? I'm not familiar with the term.

[birdman]

there supposed to be highly resistant to heat, scuffing, and wear because of what there made of.

[BIGBULS]

IIRC, the STOCK pistons on Gen II and newer ARE Hypereutectic...........

 

It's been explained to me as just a different casting process using a lot more pressure. It's not as good as forgeing, but IS better/stronger than the usual cast crap out there.

 

 

 

So I have heard at least...........

[Dirty Rockstar]

Hypereutectic pistons rely on a heavy mix of silicon in their construction.. THis allows the to be more viable, and are definately better than stock.. This is a cheaper alternative than forged, though not as good..

 

..It is a Good, Better, Best scale situation here..

 

Good=Stock: Stock will be just fine if you are doing a rebuild without any performance mods (And I mean an internal mod.. Not a strap on filter)

 

Better=Hypereutectic: Better for light to moderate boost applications.. They will expand and contract as they heat and cool much better than stock.. With hypereutectic pistons, you have more flexibility as far as boring goes as well..

 

Best=Forged: High boost, whether it be NOS, SC, or turbo.. They are the strongest you can get and are also what I want to get for my LQ1..

 

I think I got this info right.. I pulled it from my head just now..

[mfewtrail]

Here's a small blurb about hypereutectic pistons.

http://www.kb-silvolite.com/article.php?action=read&A_id=2

 

A quick google search should come up with plenty more links...

[GutlessSupreme]

IIRC, the STOCK pistons on Gen II and newer ARE Hypereutectic...........

 

x2 I want to say our pistons already are as well

[Hippie]

pistons aren't vehicle or engine specific for the most part. They're simply determined by bore size. Find out your bore size, and try to locate pistons from there.

 

They are most definitely engine specific! They have different wrist pin heights to accomodate different strokes and block heights, different wrist pin sizes for different connecting rods, different pin offsets depending on engine design, different valve relief sizes and positions depending on cylinder head configuration or no valve reliefs and different ring groove positions and sizes. If you know your stuff you might be able to match something up that comes close and do some custom machining but just picking something with the same bore isn't going to get you there. But as others have already stated GM started using Hypereutectics several years ago across the board.

[pwmin]

you'll just have to search on 60degree. i know you can get them for the 3.4X but they dont make them specifically for them, but some 350 pistons will work.

[z34_nut]

Strange, I seem to have six of these thrashing around my block everytime I start my car

[timg]

I posted about this over on 60 degree v6 just within the last week.

 

http://60degreev6.com/showthread.php?t=33699&page=2

 

"Here are some links. Speed Pro Hypereutectic pistons.

 

91-95 LQ1 part number HC813CP - $28.69 each - $172.14 total

http://store.summitracing.com/partdetail.asp?autofilter=1&part=STL%2DH813CP&N=115&autoview=sku

http://store.summitracing.com/partdetail.asp?autofilter=1&part=STL%2DH813CP%2D100MM&N=115&autoview=sku

 

96-97 LQ1 part number HC684CP - $29.99 each - $179.94 total

http://store.summitracing.com/partdetail.asp?autofilter=1&part=STL%2DH684CP&N=115&autoview=sku

http://store.summitracing.com/partdetail.asp?autofilter=1&part=STL%2DH684CP%2D100MM&N=115&autoview=sku

Tim"

[Vegeta]

For steet use forged pistons aren't always best. They expand more so you have to have more clearance between the piston and the cylinder. Unless you are going to see extreme combustion temps or pressures, the H pistons are your best bet.

[birdman]

those summit links didnt work, i think i will use them if i can find where to get them at, i wish i didnt have to loose the compression because those are for an auto.

[SleeperRed90TGp]

those summit links didnt work, i think i will use them if i can find where to get them at, i wish i didnt have to loose the compression because those are for an auto.

 

Any parts store that has Federal Mogal brand parts can get the pistons for you. A little cheaper too.

 

Jud

[birdman]

well the link he posted on 60* worked so here soon i will be getting those and giving them a try. thanks everyone.

[timg]

I fixed the links on here. I would suggest googling the part numbers or entering them into Summit Racing's search if the links stop working again. The first time was my mistake with copy and pasting.

 

Tim