i am gettin ready for an engine overhaul and was wanting to know how well these types of pistons stood up to the abuse we like to put our cars through and if they have ever been used in a boosted application. Thanks for the info guys
"sometimes the respect is more important..."
Best to spend a bit extra and go with Wiesco. I think in most cases its a 8 to 100 $ difference and well worth it.
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i found a set of 4 hypereutetic pistons for 200 and the lowest i have found a set of wiesco's was 450 so its quite a bit of difference but like you said it will probably be worth it in the long run....may have to just put off on the LSD for a little while....lol
"sometimes the respect is more important..."
hypereutetic arent that bad they will handle alot more than most people think I mean they did come in some applications stock like fbodys i do beleve and I know mustangs. It all depends if you are going to run a crazy N/A car with a little spary just for fun yeah they i will work mid amounts oif boost sure high horse power crazy stuff like most of us do not so much but for the money if you just want make it better than stock I would use them.
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I'm not sure I've seen a J yet that couldn't have used hypers with proper tuning. There are many factory turbo cars that use them.
fortune cookie say:
better a delay than a disaster.
i think im gonna try and if they work great and if not at least we will all no now huh. my brother was the one who turned me onto them. he use to run them in his race motors when he ran dirt. and we are talkin 400+ hp in his late model motor so i think im gonna order some and throw them in and when it comes time for boost we will she if she goes bang or not lol thanks for your help guys
"sometimes the respect is more important..."
im pretty sure 2.4's come stock with them anyways.
z yaaaa wrote:im pretty sure 2.4's come stock with them anyways.
Probably, the 2.2s did.
fortune cookie say:
better a delay than a disaster.
i called oreillys and they said the oem replacement for my 2.4 is not hypereutectic so i dont know i ordered them with a little bit of an overbore so we will see if i can tell a diff once the motor is back together
"sometimes the respect is more important..."
z yaaaa wrote:im pretty sure 2.4's come stock with them anyways.
Interesting...
That being said, since it'd be sorta related although I haven't bothered to search for and read about it, what's the highest boost level anyone's been able to reliabily sustain on a 2.4 with stock internals? I know it's playing with fire, but tuning is always the key to your motor's survival. It seems generally around 9-10 psi is where people start breaking stuff, but how far has anyone pushed it for any real length of time without it blowing up? Over on the 3rd generation Eclipse forum I used to be on constantly (my old car) it was usually believed that anything over 8 psi on stock internals for the V6 engine and you were living on borrowed time. Then a guy came along with 180,000 miles on his stock bottom end, twin turboed it and perfected a really REALLY good tune, and the last I heard he had gone well over the 200K mark...pushing a constant 15 psi still on the stock bottom end.
Just curious...I know I should search, and I definitely do and will. Just wondered what people might have heard.
well, brian (speedracerZ) held 15psi on his stock 2.4 turboed for quite ahile IIRC, even the stock clutch held and it was running 12's. god that was a long freaking time ago....
im sure you really could run 7-8psi reliably on a stock engine with a good tune and have no issues, but 2.4's really dont like to beat get on all the time anyways.. and thats with NO boost.
IMO, a stock internaled 2.4 could take 10 psi with the 2.3 oil pump swap, a perfect tune, and driven respectivly.
i plan on runnin at least 10 psi while it is a DD and turn it up for track nights. i am overhauling the engine so it should be fine. i run it pretty hard but not on a daily basis.
"sometimes the respect is more important..."
I also would like to know more about them...can they clear high lift cams? handle a 100shot? Thanks.
Quote:
well, brian (speedracerZ) held 15psi on his stock 2.4 turboed for quite ahile IIRC, even the stock clutch held and it was running 12's. god that was a long freaking time ago....
That was before the HPTuners days too, was it not? Probably can squeeze more out of it with the ability to tune.
^^^ I'd like to hear the science behind that one... N2O is exponentially harder on your pistons than boost.... This is all of course assuming that PROPER tuning has been done, ie; remapping fuel AND spark on a dyno, while datalogging the af-ratio AND knock sensors. Forged pistons ARE more resilient than hypereutectic, but hypereutectic will hold up to a lot stress so long as no detonation is encountered. Even forged slugs will only last so long if the tuning is bad. And believe me, a lot of tuning these days is done by people who don't know sh*t about what a proper tune is. There's a difference between a tune that "will work" and the PROPER tune. Anyway, without digressing further, if you're looking for serious power, I'd go with forged just to be on the safe side. However, if you're staying in the more mild area of say 280 hp and below, then I wouldn't be scared of using hypereutectics... Just make sure you find a competent tuner before running any boost on them.
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I want to use them in my 2.4 n/a build with a 75-100shot later. Im going to use the 086 head and scret cams...but later want to upgrade to w41's. So I would need a machine shop to make valve reliefs? What kind of $$ are we talking...? Thanks.
anything can last longer with a proper tune, finding somewhere is the hard part. i bought a set of them and am gonna see how they do with some boost. its not gonna be outragous but it may be up to 15 at the track.
"sometimes the respect is more important..."
yea... im thinking about it since there a little over $200 for the a set and rings. Well see....!
We have Hypereutetic Pistons on my brothers 1986 Daytona Turbo Z! So far we've pushed 340HP on pump but like they said that was with a good tune. It has since had 35,000 miles put on with those pistons and sees the track almost every weekend. We've had good luck but the key is the tuning.
Gm used hypereutectic pistons in the '89-'90 turbo Grand Prix, among others. It might be worth noting that some current owners of these cars will run 'em up to 14 or 15psi on the stock turbo. Bear in mind, of course, that they are using safe tunes on these cars...rich fuel conditions and such...to avoid ping.
I've got hypers in the wagon (engine was built with a TGP rebuild kit in large part), and it did fine at a daily 6psi with some spiking up to 10psi. Larger snail than the TGP stocker, but still...
As already stated, a proper tune is the key. If you can't get a proper tune, at least tune so as to not grenade the engine.
Have you seen the turbo wagon?
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