Choosing The Right Piston Alloy - 4032 or 2618

[@mitsuturbo]

I've been making ~500whp on a 2.3L mitsubishi for a few years now. The car has been raced a LOT in autox and at the drag strip. I've been extremely happy with my Mahle 4032 pistons.

[@maxwolthuis]

Thank you for this awesome video! This was extremely helpful, someone get this man a raise!

[@mahlemotorsport]

Glad you enjoyed it!

[@matthewstorm5188]

If you DON’T need the strength of 2618, 4032 is actually better in every way. Not only can you run them tighter. But they also have better wear qualities and they’re lighter.

[@Prestiged_peck]

So basically if you're pushing records, 2618, otherwise 4032 is great

[@junechris]

Yeah, I got a nice classic 4 banger, a 1995 Saturn SL2 that I'm rebuilding the engine with JE pistons, 10 to 1, SCAT forged H beam rods balance and blueprint, 3rd gen heavier 6 counterweight crank, with lower tie plate with a port and polished head, dual intake cams, mild deshrouding, mild bowl blending, polished combustion chambers, narrow blended 1-2 mm value seats, port and polished intake manifold with port matching, bigger throttle body and 10-12 PSI of turbo boost, and an E85 blended full tune, etc. One of my other buddies gonna fabricate a cat back turbo exhaust made out of titanium and the car already has a carbon fiber hood, seats, and a set of RPF1 15X7's with Yokohama Advan performance tires, and upgraded MFactory LSD, and drive line and suspension. Little by little it should be very fun to drive when completed. 325-350 HP with more torque than horsepower and 2200 LBS. I've owned the car 17 years after my dad gave it to me

[@michaelbradley7529]

Mahle is with out a doubt one of the top piston manufacturers.

[@NewDemons666]

Have a set of 4032's with manley rods in my 500hp mazdaspeed3 build

[@mahlemotorsport]

Very nice! Thank you for using our piston sets!

[@russellhueners8499]

First time I saw a Mahle piston was in 1990, working for Harley-Davidson, it was in their EVO engine, I thought they were a German company, anyway great products , good presentation.

[@JohnSmith-ps7wp]

It is a German company.

[@JohnnyWishbone85]

Mahle is definitely a German company, but they have a pretty big North American operation, including a lot of manufacturing.

[@dany7425]

Great video i like 👍 but what about the 142P alloy from Mahle

[@geraldhansen3189]

Mahle has always made great parts.

[@junechris]

Yep, I'm using all Mahle gaskets, head gasket, intake manifold, EGR, exhaust, valve cover gasket, and throttle body, etc. I'm going with JE pistons though because I already ordered them for the rebuild but if I knew that Mahle made pistons, it would be a tight battle where I'd choose either or, etc.

[@ngt84]

"old" turbo VW 1.8T and new 2.0tfsi Audi Turbocharged engines are known to run with Mahle forged pistons by factory. Remarks on these product are these: These pistons are manufactured from Mahle’s proprietary 142P alloy. This unique alloy offers the low-expansion characteristics of 4032 but strength near that of 2618 alloy. The low-expansion quality allows piston-to-wall clearances to be set tight, which allow the pistons to operate like OEM, quietly and smoothly. So why we cant make custom forged pistons with this proprietary 142p allo which is available now for 15years since the launch of the infamous 1.8T vw - audi engines ?

[@mahlemotorsport]

We can do 142 for that engine, please contact us at 1-888-255-1942 Unless it is something extremely radical in which it would have to be made out of billet.

[@stevenp3176]

Sometimes a factory spec alloy is owned by that factory and simply produced by a manufacturer .

[@christophercash8245]

I'm wanting a set of 4032 pistons for a 4.6L 4v mod Ford engine, but I can't seem to find anyone selling them

[@vegas915]

Love yalls products ! I have a 2012 srt 8 392 and I purchased the 4032 pistons and went with a redeye cam lifters and also have long tubes. This will be a street car with very minimal drag runs. I plan on adding forced air and my goals are 650-700 at most rwhp did I make the right decision or would y’all have recommended the 2618? Thanks in advance !

[@kerryneville5290]

hello i would like to know if a 4032 can be used in block that was clearanced for 2618 thanks

[@mahlemotorsport]

What matters is the piston to wall clearance to work with the alloy expansion.

[@gordondahle7583]

Oh no! I watched this video. Now I have “piston envy!” 🤓

[@SgtJoeSmith]

Should I use 4032 for daily driver ford 302 build for ranger truck? I'm wanting to do 400 or more hp. No racing. Light towing. 4x4 truck. I want long lasting. Thanks

[@aaronjames11]

4032

[@SgtJoeSmith]

@@aaronjames11 thanks!

[@Limeayy]

4032 is able to get 1000hp? HOLY CRAP Curious as to what you'd use if you want high RPM's? like 8k-18k if beyond 9500RPM's is possible, could you go about using 4032 if at all? I do like the less noise and expansion. Not turbo charging, just straight NA. I sent a reply to Mahle one time about their S2000 coatings for i think the powerpak pistons, S2000 F20C, F22C Gold Series 2.0L - for use in Factory FRM (Fiber Reinforced Matrix) Cylinders Onlyw They don't allow use in sleeves, i want to use em in darton sleeves. Curious as to why i cannot, i want the cylinder bored for darton sleeves and how come the graafal coating from the coating guys that engineered it says you can use it i believe thats what they said and mahle says NOT TO.

[@mahlemotorsport]

In reference to the alloy, it is possible, but we must also consider the application as a whole. If your the purpose of the vehicle is to race - and only race. The race vehicle is going to have a 1000 horsepower in an 8 cylinder motor in use at all times we would recommend 2618. We do receive a lot of calls where the customer is going to only use a fraction of that horsepower and then run it on a drag strip or a road course here and there and that is where they could use the 4032 alloy. As for the Gold Coating most customers wish to run these pistons in the factory bores, as the factory bore liners are very strong and low friction. Our Gold Series uses a special piston skirt coating (gold in color) that is made specifically for FRM bores, like what comes stock in the S200 cylinders. If the Gold Series pistons were ran in an iron bore, the pistons could have abnormal wear and poor performance. If a customer wishes to run an iron cylinder with these pistons, they need to contact us and we can produce pistons with our Grafal skirt coating for them. This would be a quick turnaround process and would not add much cost for the customer.

[@kylelove927]

@@mahlemotorsport Excellent reply and explanation! Thanks!

[@sepg5084]

superbike engines (which rev quite high) use hypereutectic pistons, which have high silicon content.

[@revolution3797]

Maybe you will know I've been asking with no answers. I've been working on a tractor and Oliver 70 standard Continental. All Pistons are just fine except two and one sleeve. No one has any for sale nor do they make them winning piston rings they do the Pistons themselves no. Do the piston rings make a difference if I have four and I bought a piston that will fit that has two or three piston rings?

[@sergiustarcea1918]

For a 2jz gte ... running around 800whp what would you recommend ? 4032 or 2618? Car is going to be mostly a street car ... and sometimes do some racing. Thank you.

[@mahlemotorsport]

4032 if the majority of the driving will be on the street.

[@Mp2000_]

What would you guys recommend for a VR6 3.2 with mostly daily driving, occasional drag racing and some nür laps? Between 8 - 8.5:1 CR, 700-ish daily awhp and 1000-ish drag/track hp. 2.5/3.3 bar boostgoals. As far as i could find, your 3.2 VR pistons are 142P correct?

[@lethlbu]

Great info! All things being equal, will the 2618 make more power than the 4032 since its looser?

[@mahlemotorsport]

Actually 2618 is not 'looser' - it initially has more piston to wall clearance. Once it comes up to temperature the piston expands. The material has a low silicon content which causes it to expand, the material has higher strength properties and can be found to be used with higher horsepower applications.

[@matthewstorm5188]

Being ‘loser” doesn’t make more power. 2618 doesn’t MAKE more power. It is a stronger and more ductile alloy that can HANDLE more power than 4032. It’s ability to handle more power has nothing to do with its higher expansion rate (which requires the higher clearance). Rather, the higher expansion rate is a consequence of its composition (ie lower silicon).

[@ode2logo715]

Could not find 4032 allow for N54 engine. Why ? Thanks

[@mahlemotorsport]

We do not make an N54 piston in 4032 because majority of builds need 2618 for that engine.

[@Timmer1]

have any piston ideas concern the lenz effect on the pistons?

[@parkourajis]

I'm planning to build an old audi s3 1.8-20vt for 500hp would you recommend 4032 cause I want to keep the car both fast but also reliable because I'm planning to daily drive it. Will the 4032 be able to handle 500hp?

[@stefanothemeraanthony1532]

What type of pistons can I use for a golf mk1 1.6 but I want it 20000...

[@chrishall5508]

So I’m actually looking a a couple of your powerpak forged piston kits for my small block ford. I plan to make around 1000hp do you think I should run a 4032 or a 2618?

[@mahlemotorsport]

Is it race only or also daily driver? How much boost or nitrous will you be using?

[@Hyper7Justin]

what would be a suitable application for 992 turbo s with a tune to 750hp? Stock is already 650hp so would that considered as a mild tune hence 4032 alloy?

[@mahlemotorsport]

4032

[@rapufanatyk2196]

What If i want run about 650-850hp and drift oftem ? Is it 2618 nesesery ?

[@mahlemotorsport]

Are you using it for a daily driver or racing application only?

[@zqz1585]

MAHLE Motorsports North America Daily driving on the Autobahn

[@stangboy3029]

I’m having a motor built. Is it true that the 2618 piston only lasts around 20k miles and that it damages the cylinder walls ?

[@coryswinerton3296]

NO. Not if the PTW clearance is properly reached. Some have gone well over 80K miles.

[@mahlemotorsport]

Each build is different but if it is built correctly it will last well over 20k. We have some on our staff that use 2618 as a daily driver.

[@CoopDawg11]

What about dirt track. Simple 11:1 400-420 Hp 4032 be fine? 4 races a month 20-25 a season

[@mahlemotorsport]

4032 would be the choice we recommend

[@listonthomas796]

Gd,I have a h22a,5100139 should I used forged high compression pistons,or just high compression pistons

[@mahlemotorsport]

What is the purpose of the build? A daily driver with some track days and increased performance?

[@kevinbodman1011]

What alloys do you use on Porsche air cooled turbo engines?

[@mahlemotorsport]

Both 4032 and 2618. You can view them on our Porsche Application guide. Scroll to the bottom of the page to download it. The address is here - www.us.mahle.com/en/motorsports/nhra-legal-pistons/

[@zqz1585]

What should I use at 30 to 45 psi

[@zqz1585]

Something like 9:1 or 10.1 I don’t know

[@HandMadeRoyalty]

2618

[@HandMadeRoyalty]

9:1- 11:5:1 for e85

[@Anarchy-Is-Liberty]

OK, what is your recommendation for a 460 BBC, 12.5:1 compression (or there about), 750HP N/A and 1000+HP with NOS @ 7000-7500RPM?

[@mahlemotorsport]

4032

[@coryswinerton3296]

2618 all day.....

[@HandMadeRoyalty]

So for a boosted(turbo), e85, and 500hp daily engine 2618 would be best?

[@Prestiged_peck]

500 horsepower on what? 500 horse on a Briggs and Stratton is a lot, 500 horse on a 454 big block is a bolt-on motor.

[@craigslue]

200-250 shot on a daily driver which alloy?

[@mahlemotorsport]

How much daily driving? Which engine and how much horsepower is your build?

[@craigslue]

@@mahlemotorsport Will pretty much be an everyday driver. Looking at around 500-550 NA at the flywheel on a 5.7 hemi stroker with a turn of the knob on occasional weekends and possibly an occasional trip to the local strip. You know how it goes though was originally saying 150 would be enough and haven't even built it yet and its slipping up to 200 shot!!! lol

[@mahlemotorsport]

4032

[@craigslue]

@@mahlemotorsport ok thanks

[@90slegends49]

What is the best for daily drive?

[@mahlemotorsport]

4032

[@AUTOdidact77]

@@mahlemotorsport My workshop (uses Mahle pistons) refered to those, answering my question, as "Al124" resp. "AlSi12Cu3Ni2Mg". Which version is meant with this? Thanks!

[@matthewstorm5188]

4032. Unless you need the strength of 2618, 4032 is the better alloy.

[@ctapmgriley]

Silicone or Silicon?

[@mahlemotorsport]

Silicon

[@Drunken_Hamster]

How do 4032 forged pistons compare to something like Toyota's thixocast/semi-solid cast pistons(justifiably labeled "semi-forged" due to aligned grain structure)? Please do not take the word "cast" out of context and actually do some research on them before replying.

[@coryswinerton3296]

Silicon is a naturally occurring chemical element, whereas Silicone is a synthetic substance. He should be saying "SILICON"

[@mahlemotorsport]

It’s just our Southern accent. We may not say a word with correct linguistics from other parts of America but we build some very correct pistons. :)

[@joe1273]

Why is 2618 only alloy available on the gen 3 coyote power pack pistons? Wouldn’t a 4032 a better fit for a drop in piston? Does it have to do with the new spray in cylinder bore?

[@mahlemotorsport]

It does not have to do with the spray in cylinder bore. The 2618 alloy offering are for those who want to use power adders and maximize horsepower.