how much can our pistons handle?
 

How much can our stock pistons hold safely? I know they're forged, but is there a real advantage to changing them other than if i wanted to change the compression ratio? Im really wanting to change my rods just for a safety precaution and peace of mind. If i can get a strong set of rods and not HAVE to spend $700 on pistons, id be good to go!!!!

the biggest problem is u need to have the stock pistons modified if u want to use them with fter market rods, u might as well do it all the first time for the little extra change while ur there is worth it.

As far as I know, the pistons aren't forged...just the rods and crank.

$499 to $599 is all you should have to spend, not $700. Shit for $700 I could get you pistons that would handle over 700 WHP and custom made.

Huh? Are you telling me that they don't make a standard rod for this motor that you could use the stock pistons on?

I have yet to get the materials break down done (metal testing) but they look forged or like pressed castings. They don't look like your standard cast parts but some of the new casting procedures are getting closer to looking like forged everyday.

yes thats what im saying its been done with stock pistons and u can find info on the other forum from the guy who did it and he had to have the stock piston modified and as for the price $700 is way to high u should be around $500.

the guy who did it explains in this thread. For those that have built their motors - Mazda6 / Atenza

If you have going to go through the trouble of changing the rods, why the hell would you not change the pistons? People make stupid decisions.

thats exactly what ive been saying!

Thats why ive been asking some of you subject matter experts on here. I had read in the past that our pistons were plenty strong and that it was just the rods that were a weak link. I was also asking what had to be done to the stock pistons to mate them to the new rods. My questions were answered confidently and it seems as I will be searching today for the absolute best deal on both rods and pistons now.
Thanks guys!

Wiseco FTW!

I hate Wiseco.... I ran one of their pistons in my bike and it was shit. You can tell just by the machining how shitty they are... they work, but they aren't near the quality of CP...

I'm not 100% sure if they actually make automotive pistons, but if you send them specs and want a large enough order they will make them for you... Mine is around $250 for a single piston, but the craftsmanship is well worth it!

I have one of just 12 Venom BlackWidow 14.25:1 pistons ever made... and it is a godly piece of work!!

http://i37.photobucket.com/albums/e8...s/DSC00059.jpg
http://i37.photobucket.com/albums/e8...s/DSC00061.jpg
http://i37.photobucket.com/albums/e8...s/DSC00060.jpg
http://i37.photobucket.com/albums/e8...s/DSC00062.jpg

Im not big on CP pistons anymore. To many issues with them on modular ford engines.

no my rods are from eagle and pistons from arias 9.1 compresion should be in this week, they were costum made to order by my mechanic but will be available seeing they will have they now have the specs ill post the info or item#s when i can get the mechanic to give me them.

sweet!!! Cant wait to hear more!

ok spoke to my mechanic and he said that eagle doesnt have a #for the rods yet but can have a shop call them and order them under the specs for my build and so i called street unit and they are willing to order the eagle rods for anyone intrested just call Chris 321-296-0777 and tell them u want the price on the arias pistons and eagle rods jeremy hall is using on the speed6 build and he can get it for u and if he has any questions he can call me.

well....what IS the price that Jeremy Hall got on the rods and pistons? Otherwise, how would we know if we actually GOT the price that Jeremy Hall got? hehe

I forget whose website had them in the MS3 section, but there was an offering from Wiseco of the 8:8:1 (of course) variety. Didn't check them out or anything, just made myself a mental note that they were indeed there. I'll be doing a little browsing later this week and when I come across them, I'll post the link. Maybe they listed them in the wrong section, dunno.

You can get a rod bulid from Pauter or Oliver to fit any piston that you want. I didn't see where they said anything about it not working just that it wouldn't be smart to run it on the stock piston. If I missed it sorry. If you get Pauter rods or Oliver rods your going to be spending a pretty penny for those rods. Other then that Arias piston are the only one avaliable right now? Someone needs to get Wiseco or Mahle involved with this car right now.

do not go 8.8 to much lag u dont want to go lower then 9.1 u dont need it!

have u ever seen pauters place?

after i saw it i wouldnt let those guys change my oil.

and they did not seem to be very precise let me tell u.

my mechanic is some what a celeb and i belive is an upmost athority on this motor (hint, he built a 1400 hp motor based on the disi block) and doesnt want me to release his name until the block is asembled but he has some major connections and he was the one to get the rods set up at Eagle so i dont know what he paid for them and he also got the pistons direct from arias, but thats why i said to get a hold of chris bcos he can call eagle and give them my mech. name and the build info and they can get him the info.they havnt assigned a number or aything yet like i said they only have done the one costum set used for my motor but would be willing to sale more of them.

lower CR is better for higher HP boosted applications.... much safer....

I wouldn't go around throwing the blanket statement that nobody should go 8.8CR.... maybe it isn't right for YOUR motor build, but it will be for someone else at some point.

That's pretty low for a DISI motor though... one of the strong points of DISI is being able to run higher CR.... otherwise we should all just ditch the DISI head and go with an MZ3 head and a standalone...

I generally go 1 point higher in compression when i rebuild motors. You make tons more power, even under boosted applications. If i run strictly N2o, i go 2.5 points higher in compression.

that seems extreme!

Nope, not at all.

Like racefuel much?? :nana:

my mechanic is running 9.1 in there 1400hp disi motor car so i think anyone here will be good.
as amater of fact if they are not planning over 400hp i would stay with the 9.5CR.thats my 2 cents from what ive learned from talking to an athority on this motor.

there are 5 of them out there already so what he is doing is nothing special big deal. The custom pistons from Wiseco aren't that custom we had them designed over 6 months ago and are being run on cars.

Well Wiseco doen't want to admit to that then. I have called them last week and this week.

Scratch that, just got the part numbers for the piston. They are listed on there site as "NEW" now. So if anyone needs the part number they are listed here http://www.wiseco.com/Catalogs/Sport...Mitsubishi.pdf. I still think that you have to get the pins or something corrected because they had no idea what I was talking about when I pointed out the problems with the pin fitiment.

sorry brain fart we use Arias.

Thanks, are these an "on shelf item" or custom order only?

ya and they are still not listing the 9.1 and 9.5 compresion ratios but that may be because they didnt work on fitment tell this past tue.4/22

those are for a regular 2.3 the same for he focus. Ken called them today.

The arias are custom exclusives to us.

Arias does not do exclusives only, sorry been using them for 20 years now and they have never done exclusives. You may have your own design with them and they will not sell your design, but if I send them a piston they will build one for me.

They are for the 2.3 motor but they are the same less pin size. I have checked the spec on both pistons and the only thing thats different is the pin diameter, thats all from what I have been told. So I guess its time to start making calls and beating people up if they want to sell parts or not. Wiseco stated that they had the design for MS3 piston ready.... where is it?

Mahle should have something here very soon as well as CP.

Gotcha. I got an email back stating that they should have something ready next week. I have placed the order with my supplier will all hopes that we have 4 sets ready here with tools steel pins in a few weeks.

wouldn't that be exclusive then? if they won't sell them to anyone else?

And Ken called up Wiseco and they said the pistons are designed for the regular 2.3 so you still have to get rods made because the Pauters are matched to the Arias we have. We are VERY ontop of things at Protege Garage even if others don't think so. We just sold a few more forged setups. that makes quite a few now. the only one that never worked out was Chris' but that was his tuner nothing else. Oh and CP has pistons ready to go but there is like a 4 week lead time on them at time of order friday.

meet with my mecanic today and he said that the guy working on them dad had a strock so they said its still going to be a couple more weeks tell they are ready.