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Author
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Topic: Hyper vs. forged pistons?
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SydeWayzSix
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Member # 2222
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posted
 
 
I was wondering what the main difference is between using Hyperneutic (sp?) pistons against forged pistons. I know that the forged pistons are stronger, but how much can the hyper pistons actually handle? Are there any advantages in using them?
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1989 Notchback "SF Giants" edition...
Goodbye '00 Kawi ZX-6R...you will be missed dearly.
....on with the show! :)
Posts: 1999 | From: Bay Area | Registered: Dec 2002
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two-gun kid2
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Member # 5891
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posted
with a boosted application forged will hold up, cast youll have holes through the pistons
Posts: 5566 | From: Hayward,Ca | Registered: Jul 2005
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putter
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Member # 4253
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posted
Hyper pistons have a high silicon content for strength in street engines they are great for high reving. They do not hold up for blowers or nitrous because they melt at a lower degree. So.. if youre using an adder get forged otherwise hyper.
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KEEP THE SHIT REAL!
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Sellers Beware WayfastYtee "BAD TRADER"
Posts: 626 | From: sacramento | Registered: Mar 2004
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Hungry Hippo
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Member # 537
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hypers are just fine for 450rwhp. my bottom end has gone lean on nitrous and boost(not at the same time) a bunch of times and it's still running strong with 120k
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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mustanggt5091
All I need is.....
Member # 444
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posted
quote:
Originally posted by putter:
They do not hold up for blowers or nitrous because they melt at a lower degree.
A buddys 70 Nova with a 383 with all cast parts and hyper pistons has been running great on his 250+ shot for years now ![[Razz]](tongue.gif)
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88 GT 357w (SOLD):(
06 Limited Edition R6 !!!!!
Posts: 2353 | From: Fairfield / Santa Rosa , Ca | Registered: Sep 2001
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SydeWayzSix
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Member # 2222
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posted
so for a naturally aspirated motor, would the hypers pistons prove to be better or just "fine"?
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1989 Notchback "SF Giants" edition...
Goodbye '00 Kawi ZX-6R...you will be missed dearly.
....on with the show! :)
Posts: 1999 | From: Bay Area | Registered: Dec 2002
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putter
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Member # 4253
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posted
quote:
Originally posted by mustanggt5091:
quote:
Originally posted by putter:
They do not hold up for blowers or nitrous because they melt at a lower degree.
A buddys 70 Nova with a 383 with all cast parts and hyper pistons has been running great on his 250+ shot for years now
Im not to good with the "my buddies, friend has done 5 second quarters in a stock honda b/s." I just give the facts and my fact IS CORRECT! NOBODY cares about stories! FACTS IS WHATS GOOD. I never said they wouldnt hold up either just stated factual informal, the old "my friend stuff is ![[BS flag]](graemlins/bs_flag.gif)
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KEEP THE SHIT REAL!
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Sellers Beware WayfastYtee "BAD TRADER"
Posts: 626 | From: sacramento | Registered: Mar 2004
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Quick 88LX
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Member # 1950
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posted
quote:
Originally posted by putter:
quote:
Originally posted by mustanggt5091:
quote:
Originally posted by putter:
They do not hold up for blowers or nitrous because they melt at a lower degree.
A buddys 70 Nova with a 383 with all cast parts and hyper pistons has been running great on his 250+ shot for years now
Im not to good with the "my buddies, friend has done 5 second quarters in a stock honda b/s." I just give the facts and my fact IS CORRECT! NOBODY cares about stories! FACTS IS WHATS GOOD. I never said they wouldnt hold up either just stated factual informal, the old "my friend stuff is
I disagree. Stories are what we all learned from in the beginning of our "what should I build" quest for more power. Not a single person, who builds their own motors, has ever been completely cut off from hearing about "this guys stuff" or "that guys stuff". I bet YOU have heard all kinds of things about what some guy did and you tried the exact same thing or something very similar. The old, "My friend" stuff isn't bullshit. It is how most guys learn what works and doesn't work WITHOUT breaking their bank in the process. Do you read magazines and get ideas from them? What is the difference between that and someones friend doing the same thing? What, because the magazine has an editor, now it is correct? Or maybe you trust your engine builder. Maybe you think his word is as bulletproof as a Dart block. That is still hearsay.
The bottom line is when something WORKS, it WORKS. PERIOD.
And yes, I run hyper pistons to hell and back every time I hit the road. AND I am running a 150 shot. I revv to 6500 1st through 4th, spraying all the way. Fact of the matter is, I have a good tune, run 11's at SAC, and the car drives like a stocker.
Uh oh, I think I have just become another "This guy I know has..." story that nobody cares about.
Shut that shit up.
If you learn something valuable, then use it. Who cares where or who you got it from.
[ April 09, 2006, 02:14 AM: Message edited by: Quick 88LX ]
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"Men are Made, Not Born"
Car Picture : http://www.angelfire.com/theforce/quick88lx/
Original Member #495. Can I get my number back?
Posts: 1785 | From: Fairfield, CA/Okinawa, Japan | Registered: Oct 2002
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putter
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Member # 4253
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posted
Oh I see! So if I say my buddies stock heads outflow AFR's I guess everyone with AFR should pull theirs off and go with stocks? Its proven forged are stronger for power adding situations. If you want to argue this call every piston designer in the U.S. and tell them about you buddy.
Bottom line is exactly what I stated! Hypers melt at a lower temp JUST AS I STATED, dont twist my words. Instead of saying my buddy this my buddy that why dont we just stick with scienticaly PROVEN data? HYPER MELT AT A LOWER TEMP. Adding boost or nitrous (nawzzz for you) adds heat. **Its wrong for you to mislead this guy into thinking hyper pistons equal forged in power adding situations.**
[ April 09, 2006, 02:42 AM: Message edited by: putter ]
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KEEP THE SHIT REAL!
Is someone posting a bunch of B/S and lies? PM me Ill bust em out for ya!
Sellers Beware WayfastYtee "BAD TRADER"
Posts: 626 | From: sacramento | Registered: Mar 2004
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SPEC -Fabrication
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Member # 4980
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posted
quote:
Originally posted by Quick 88LX:
Shut that shit up.
LMAO He hangs out with cummins to much dont mind him
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1999 Saleen#124
1997 Tahoe
2006 ZX636R
CWS certified welder
Posts: 1321 | From: drinkin BEER! | Registered: Oct 2004
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putter
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Member # 4253
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posted
He does have a point! cummins and I have 1 thing in common 12-13 second cars are not fast to us.
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KEEP THE SHIT REAL!
Is someone posting a bunch of B/S and lies? PM me Ill bust em out for ya!
Sellers Beware WayfastYtee "BAD TRADER"
Posts: 626 | From: sacramento | Registered: Mar 2004
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Motorhead6T5
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Member # 4969
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posted
Forged pistons last longer on a shitty tune(I.E. Detonation,or lean) I have personaly seen people running hard, sc'ed, on stock 93 shortblocks for a long time. If its a N/a street motor and you plan on staying n/a,hypertutechtic(sp?) is fine,less slap on cold starts,they are lighter yada yada. You can kill any motor no matter what the pistons are.
N20 or Boost,Forged is the only way to go,if you want it to last.
[ April 10, 2006, 01:06 AM: Message edited by: Motorhead6T5 ]
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65 Fastback
72 Malibu
Posts: 1230 | From: 530 | Registered: Oct 2004
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92coupe
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Member # 1957
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posted
everyone knows forged pistons are stronger, but the fact is hyperectic pistons work great w/ a all motor setup with a good tune.
can you run hyperectic with a power adder? yes, but make sure you have the money to get a very good tune.
will it run with out a good tune w/ hyperectic pistons? yes, but you life span of the shortblock is greatly decreased. nitrous hardly hurts a motor at all with a great tune, so like some of these guys have done you can run for several years on a power adder with hyperectic pistons.
bottom line is, it depends on what your trying to do. if you want to go 10's a few times and rebuild the motor get hyperectic pistons. if you plan on building a stout bottom end that will last years, that costs money.
Justin
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94-GT BLOWN & STROKED
Posts: 1209 | From: antioch | Registered: Oct 2002
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vpr_klr
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Member # 3353
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posted
First off, cast pistons don't "melt". Cast pistons are brittle, when serious detonation occurs, they explode into a lot of little pieces. Think of cast pistons like a jawbreaker candy. Hard as a rock, but very brittle. Meaning, when hit hard, the jawbreaker won't chip, it will explode into little pieces.
NO piston will last as detonation is occuring. A forged piston might last a little longer(maybe not!), but eventually will give.
Manufacturers would not use cast pistons if they were junk. Remember, they have millions of dollars and man hours into developing this stuff.
A forged piston can develop a hole, while a cast piston will break into hundreds of pieces under detonation(making clean up a mess and the most of the engine a loss in a catastrophic situation).
A cast piston is lighter, runs quieter because of tighter clearances and are cheaper to make. My 95 Cobra puts out over 550(flywheel) hp and has a completely stock bottom end and does just fine. I DON'T recommend it, but it works for now until I decide to build a new motor in which forged pistons will be used.
Forged pistons are a better choice for building a race motor or a motor with a power adder as they can handle more abuse(proposed, not guaranteed).
Go with the engine builder's recommendation on what you actually plan to do with the vehicle.
A 450 hp naturally aspirated 331/347 will last a very long time with cast pistons(longer than forged, since the clearances are run so tight, better sealing of the rings and no cold start piston slap).
I will never say one is better than the other, because they both have their advantages. Just go with what will work for your planned combo(planning is key!).
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Project crustang has begun
14 mustangs and counting...
Posts: 893 | From: Livermore | Registered: Oct 2003
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SydeWayzSix
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Member # 2222
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posted
quote:
Originally posted by vpr_klr:
A 450 hp naturally aspirated 331/347 will last a very long time with cast pistons(longer than forged, since the clearances are run so tight, better sealing of the rings and no cold start piston slap).
nice...thats exactly what i am planning. N/A 331/347 with about 400 rwhp ![[patriot]](graemlins/patriot.gif)
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1989 Notchback "SF Giants" edition...
Goodbye '00 Kawi ZX-6R...you will be missed dearly.
....on with the show! :)
Posts: 1999 | From: Bay Area | Registered: Dec 2002
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vpr_klr
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Member # 3353
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posted
TALK TO SHAUN AT ADVANCE ENGINE DYNO(JEFF S' OLD SHOP) IN SAN JOSE. I THINK HE MIGHT BE 93 PONY ON HERE, NOT SURE, BUT CALL HIM AT 916-715-7569, TELL HIM ALAN WITH THE 95 COBRA SENT YOU.
HE BUILT(IN HIS GARAGE) A 347 THAT PUT OUT 442HP THE WHEELS!!!!! FOR HIS WIFE'S CAR!! I WAS THERE FOR A DYNO SESSION WITH MY COBRA, AND A FRIEND OF MINE HAD HIS 01 GT THERE. SHAUN BUILT THE MOTOR, WITH A PAXTON NOVI 2000, IT PUT DOWN 636HP AT THE WHEELS AND SOUNDED STOCK!!!!! 2 VALVE 4.6!
HE KNOWS WHAT HE IS DOING, SO MAYBE ASK HIM ON HIS THOUGHTS FOR YOUR COMBO.
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Project crustang has begun
14 mustangs and counting...
Posts: 893 | From: Livermore | Registered: Oct 2003
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