I have a set that are waiting to go in my engine. The quality seems really good and they have a nice anti-friction coating. Hypers do well with nitrous so I think they would be a good choice for you. Not to mention how inexpensive they are. Just make sure not to cheap out on the rings. They see alot of stress with n2o, I would go speed pro or sealed power (same company its all federal mogul) premium rings. My premium rings part number is E-531K .500MM but the last part is just the oversize. How much are you planning to bore out? Mine are +.50MM which is .020". My block has a final bore size of 3.524" I am pretty sure.
Edited 1 time(s). Last edited Sunday, December 09, 2007 9:02 PM
Hey, what static compression numbers do these slugs produce?
Go beyond the "bolt-on".
I do believe that they are stock as far as demensions , so they should be right around 8.9-9.0 cr depending on overbore.
I wouldn't waste the money on them. Your paying extra for not much better then stock, spend a little extra go for forged and be done with it.
I don't understand why it would be wasting money. These pistons are cheaper than stock replacements and are from a good company. Hypereutectics offer a good performance advantage. They are cast with a higher silicone content than stock. These pistons do better with heat and expand less, so you can run a tighter cylinder bore. For mild amounts of n2o and boost they should be perfect. Not everyone can afford $400 for a set of pistons. At $18 each you cant go wrong.
^^^ agreed. I will be looking at almost $800 for a custom set for my 2.4L bottom end.
your right, for $18 thats crazzy cheap, you can't beat that price.
Me personally, I would why the pistons only cost $18 each. I wouldn't trust $18 pistons in a motor built for nitrous. I'm a believer in do it right the first time, save money is one thing but on an engine I'd rather do it right once even if it takes me twice as long to make it happen.
mitdr774 wrote:^^^ agreed. I will be looking at almost $800 for a custom set for my 2.4L bottom end.
Thats why its best to get these. I hear people running 12psi+ and 450 hp on stockers, so these should be fine.
Chris Delano wrote:mitdr774 wrote:^^^ agreed. I will be looking at almost $800 for a custom set for my 2.4L bottom end.
Thats why its best to get these. I hear people running 12psi+ and 450 hp on stockers, so these should be fine.
I'm sorry...........but, you heard
WHAT?
-
"Youth in Asia"...I don't see anything wrong with that.
Hmm... he has a 3.4dohc... even though that's probably not right for that engine either...
A quick note on expensive pistons... how many times have you seen another part failure cause those be turned into garage conversation pieces? In the case of n2o and the failure rate I'd feel better about $18 pistons than the expensive forged alternative.
yeah i think you heard two different things and then just formed it into one illogical thought and put it on the internet. 12psi on stock ecotec yeah its been done and they run for a good while. 12psi on an ohv yeah ive heard of it being done idont think for long and 450hp? where did that number come from. i know there are some fully built 2.4's on here with 400+hp which is exceptional and a great achievement when building a motor that had 140hp or whatever the exact low number it is to over 250hp+ gain. i dont think i've ever heard of an ohv valve with over 400hp on this forum. Its possible im wrong but im pretty sure yeah no.....
*2012 mazdaspeed3*
Are you seriously crying over $400 for pistons?
... omg.
Mine were $1200 for one-offs with full coating and rings and full-floating pins.... not to even mention the custom crank, custom bearings, etc...
If you can't afford to mod - don't. It's that simple.
Cheap parts = cheap parts. Period. To the gentleman who said he'd rather blow cheap $18 pistons than forged ones... well... sorry to say but cheap pistons can neither be made in the configuration I needed nor could they withstand the heat that I throw at them... they are cheap because they are meant for mostly normal use with some abuse.... not an extra 400 hp / 30 psi of abuse. lol. Further to that, if you know how to tune an engine and maintain it right, you won't blow your forged pistons. Paying attention saves a lot of $$$.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
For those thinking of running spray with hypereutectic pistons, DON'T! Many engine builders warn again the use of nitrous with such pistons, and I've seen factory slugs of this make-up even crack and fragment with just a 150 shot in a LS 5.3L truck engine. I think the only reason these pistons are so cheap is because Speed-Pro decided to grab a share of the FWD tuner market first, then did research as to what cars are commonly build in it and just started making pistons for all the engines found in them. The low cost I'd imagine is result of Speed-Pro's realization that there sadly are many serious builders for our engine (LN2) and decided to just clear what stock they had of them out by lowering the price. I mean, really... $18.00 for a hyoereutectic piston with a skirt, that give around stock compression numbers? I see them in a low-buck rebuild where the improved sealing would be very desirable for efficiency, but that's about it.
Go beyond the "bolt-on".
The cost of the pistons are so low because they are made for claimer engines. In a lot of small circle track racing, if you finish a race in the top of the field your engine can get claimed by another racer. Budget builders and racers dont want to lose thousands if their engine is claimed after a race. The quality and durabilty cannot be worse than a stock piston, so being that these are cheaper than a OEM replacement, why would these be in any way a bad idea. Also if you have supporting ADEQUATE fuel supplement to the nitrous and dont go lean hypers are absolutely fine.
SweetnessGT I am glad that you can spend that much cash on you engine, but I cant afford that. To tell you the truth my entire engine build isnt even going to break $1500. Does that mean that your car is going to undoubtably be faster or last longer? Not to mention if something lets go in either of ours engines, I can put a whole engine back together for less than your sweet custom pistons cost. To each his own, I respect everyones ability and goals but remember that just because I dont have as much money to spend doesnt mean that I cant have a powerful, reliable engine.
Yeah wasn;t he the guy claiming to aim for 500hp and then never really talked much about it thereafter???
Maybe that's what on hiatus means...
Its sad when you have atleast 3g's in a motor with a turbo and you only make 400hp. Did you ever think that he just wants a fun car because he's not trying to prove anything with $1200 special pistons and expensive other parts. If your gonna build a car, build one that your gonna get your $ worth not something that has decent street power that cant even put it to the ground. I love the J cars but i dont love them that much. I have $20,000 in my Stealth and i hate the mother @!#$ its just not worth it IMO. J's should be bolt on cars with spray that look nice. Not wanna be race or street cars. I would deff buy these pistons and use the good rings as someone stated above and make sure you have adequate fuel then spray away within reason. I know people that have their cars professionaly tuned and still burnt up their pistons. It dont matter how much expensive @!#$ you have in your car it can go just the same as the cheap @!#$ at any given time so why not save some $
Lawrence Biesecker wrote: J's should be bolt on cars with spray that look nice. Not wanna be race or street cars.
LMAO
thats the stupidest most ignorant comment I've seen on his site in a while... congratulations dumbass, your a moron.
If i buy a Honda am I aloud to mod that? What kinda car do I have to buy if I want to put on a turbo? What kind of cars will you let us race? I would hate to have a wanna be street car. LOL
retard
Im going to copy someones sig on this one.....
Cheap, Fast, Reliable...... Choose 2
ALSO Chris GET YOUR ASS TO WI!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! (bring some beernannas)
Lawrence Biesecker wrote:Its sad when you have atleast 3g's in a motor with a turbo and you only make 400hp. Did you ever think that he just wants a fun car because he's not trying to prove anything with $1200 special pistons and expensive other parts. If your gonna build a car, build one that your gonna get your $ worth not something that has decent street power that cant even put it to the ground. I love the J cars but i dont love them that much. I have $20,000 in my Stealth and i hate the mother @!#$ its just not worth it IMO. J's should be bolt on cars with spray that look nice. Not wanna be race or street cars. I would deff buy these pistons and use the good rings as someone stated above and make sure you have adequate fuel then spray away within reason. I know people that have their cars professionaly tuned and still burnt up their pistons. It dont matter how much expensive @!#$ you have in your car it can go just the same as the cheap @!#$ at any given time so why not save some $
you my friend.......are a tool
^I don't know if Larry's a 'tool" but by contrast of what Sweetness has said, I doubt he's any kinda "wrench" to speak of.
Go beyond the "bolt-on".
lol... all I'm saying is.. he wants those pistons for nitrous... they aren't good for that application. I'd put them in a stock refresher or stock compression n/a motor...
Every part has its use. This one isn't boost / nitrous. There is a reason why boosted motors from factory usually come with forged parts. Nitrous / Boost motors are under a tremendous amount more stress from compression alone, let alone controlling heat in the cylinder and on the pistons. I wouldn't want an iffy piston to be in my motor under those conditions...
Anyway whatever. It's a j-body site.. everybody's budget for 400 hp is $3.... good luck to ya.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Agreed, Sweet. I've got friends in the "classic" ranks who respect what 4-cyl's do these days so they're glad to pass any knowledge they've gained on to me. And here's what they've said: Hypereutectic pistons are nice for stock "driver" rebuilds best. You may run some spray on them (150hp max they've done, and paid.) or at most 6psi boost, but after that the heat and pressure levels become too much and they begin to crack then shatter (Remember that 5.3L I meantioned?). Heck, even cast pistons aren't trusted to that much stress. That's why every time I see one of the guys do a build in serious pursuit of power, they always put in forged slugs to take no chances.
Go beyond the "bolt-on".