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Mahle Pistons for stock bore liner on 2zz (MWR)

9768 Views 84 Replies 28 Participants Last post by  Black_TRD
Finally Pistons for the stock bore liner on the 2zz:

I want a set :evil:

http://monkeywrenchracing.com/mahle_piston_set_toyota_2zz_ge.html
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monkeywrench said:
The special coating on our pistons is NOT cheap...
Hey Matt - this doesn't require that the bore be resized or rehoned does it?
Boosted2.0 said:
Hey Matt - this doesn't require that the bore be resized or rehoned does it?
The clearance on the block we built for our shop car was perfect. No honing should be required.
Boosted2.0 said:
Hey Matt - this doesn't require that the bore be resized or rehoned does it?
also been reading that post on elisetalk, but as I understand it (and assume you too) the 2zz can't be bored oversize thought that would include honing as that would mean to scratch the liner.
Black_TRD said:
Boosted2.0 said:
Hey Matt - this doesn't require that the bore be resized or rehoned does it?
also been reading that post on elisetalk, but as I understand it (and assume you too) the 2zz can't be bored oversize thought that would include honing as that would mean to scratch the liner.
Yup - that wa smy thought - theres 0 variation in 2ZZ bore size from the factory which is why theres only one size for the stock replacement pistons - I would hope the new pistons would fit assuming there is no more damage. If they don't that would kind of ruin the experience for me.
monkeywrench said:
Boosted2.0 said:
Hey Matt - this doesn't require that the bore be resized or rehoned does it?
The clearance on the block we built for our shop car was perfect. No honing should be required.
Oh - I thought you guys were running the wisecos in your shop car?
What other internals did you folks drop in with the mahle pistons?
Boosted2.0 said:
Oh - I thought you guys were running the wisecos in your shop car?
Nope. Was stock, now is Mahle.
malice said:
What other internals did you folks drop in with the mahle pistons?
It's "mild"

More info after we dyno it.
how much would it cost to get a set in 10:1? i think the 2.5 drop is too much for the 2zz (im not planning to go past 260whp either)
I like to install a S/C in the car but I love N/A power....if I install the MAHLE piston 12.3:1 and I put a month later the S/C ... if I compare to the oem piston with the mahle psiton....will I have a big difference beteween 11.5:1 S/C and 12.3:1 S/C?? can I lose some big power with the mahle piston and S/C.....sorry for my english. tank for all info guy s
240MAX said:
I like to install a S/C in the car but I love N/A power....if I install the MAHLE piston 12.3:1 and I put a month later the S/C ... if I compare to the oem piston with the mahle psiton....will I have a big difference beteween 11.5:1 S/C and 12.3:1 S/C?? can I lose some big power with the mahle piston and S/C.....sorry for my english. tank for all info guy s
If you're going to supercharge a 12.3:1 motor you better plan on running race gas or straight alcohol 24/7.
hey matt,
i remmember you telling me of a nice stroker kit i think 10:1 or something that would be nice with a charger.

would these Mahle Pistons for stock bore liner on 2zz Available in 9.0:1 compression for those with turbochargers, superchargers, or nitrous and be a nice alternative to get instead of the stroker ?

i would just buy these pistons, and swap them out with the oem one's right?
Bowlerer said:
how much would it cost to get a set in 10:1? i think the 2.5 drop is too much for the 2zz (im not planning to go past 260whp either)
Stick with stock pistons for 260whp.

Custom compression ratios won't be available, just 9.0 and 12.3. Mahle only does large production runs. You can increase the 9.0 a bit by shaving the head or block.
240MAX said:
I like to install a S/C in the car but I love N/A power....if I install the MAHLE piston 12.3:1 and I put a month later the S/C ... if I compare to the oem piston with the mahle psiton....will I have a big difference beteween 11.5:1 S/C and 12.3:1 S/C?? can I lose some big power with the mahle piston and S/C.....sorry for my english. tank for all info guy s
You won't lose power but I would think detonation would be an issue without race gas.
elcelicagts said:
hey matt,
i remmember you telling me of a nice stroker kit i think 10:1 or something that would be nice with a charger.

would these Mahle Pistons for stock bore liner on 2zz Available in 9.0:1 compression for those with turbochargers, superchargers, or nitrous and be a nice alternative to get instead of the stroker ?

i would just buy these pistons, and swap them out with the oem one's right?
For a blower making under 250whp I'd recommend stock pistons.

The 9:1 will definitely work well with turbos and intercooled superchargers running high boost.
So these Mahle pistons are plug n play? regarding that my engine has 23000km should I have a problem.
nikos said:
So these Mahle pistons are plug n play? regarding that my engine has 23000km should I have a problem.
nah 23000 KM is nothing - its barely just broke in - you should be fine
Boosted2.0 said:
nah 23000 KM is nothing - its barely just broke in - you should be fine
Thanks boosted for your advises.Always very helpfull.I just noticed that you are having a st185 3sgte.Of topic.My best friend has a sameone he has 250.000 and he likes to buy a new ragiator(koyo...etc)and a new flange to increase the compression regarding that we don't know how much the standard is.What are you suggesting and from where can we order them?
Thanks
Nikos
Sorry to dredge up an old thread, but why exactly are MWR's set cost ~$200 more than purchasing them straight from Mahle? I don't mind the cost if there's a reason... just like to know.

Also, what about these problems noted on moremonkey... http://www.monkeytuner.com/forum/viewtopic.php?t=915&start=15

Wouldn't it be safer to order them directly from Mahle, especially if they may need to be returned to them...?
guys PLEASE HELP ME WITH MY QUESTIONS !

mahle pistons is very tempting.(too good to be ture?)..

my questions are that do i need anything else to put in the mahle pistons?

how hard is the install and how long?

how much would it cost me for install at a shop?

do i just take off the head and pop them in?

how much boost can i run safely with the GT28RS turbo with large IC(w/pistons)?

what kind of power should i be expecting running safely(w/pistons)?


THANK YOU VERY MUCH
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