Mahle vs Wiseco

[dsmfa9nutter]

I was going to use 8.3 wiseco's (non-heavy duty) in my 6 bolt build but now a vendor has a deal on mahle's for less than I could get the wiseco's for. A search turned up two threads, neither of them answered the "which is better" question. I know that they're lighter and they use a tighter clearence but no info anywhere on how durability in a daily driver is affected by less skirting.

 

[GVR4592]

I think they are pretty new to the dsm market, so not a lot of people have used them. Wiseco clearances are on the tight side, I'd be afraid to run a forged piston any tighter. Do you know which alloy Mahle uses in their pistons?

 

[Big Woo]

Mahle has been around for a long time,

From Mahle's web site:

This is a small selection of our customers:
Alfa Romeo, Audi, BMW, Case New Holland, Caterpillar, Citroën, Cummins, Daewoo, DAF, Deutz, Ducati, Ferrari, Fiat, Ford, General Motors, Harley Davidson, Hatz, Honda, Hyundai, Isuzu, Iveco, Jaguar, John Deere, Komatsu, Lancia, Land Rover, Mack, Magna Steyr, MAN, Maserati, Mazda, Mercedes-Benz, Mitsubishi, Moto Guzzi, MWM, Nissan, Perkins, Peugeot, Porsche, Renault, Saab, Scania, Seat, Skoda, Smart, Steyr Daimler Puch, Stihl, Suzuki, Toyota, Volkswagen, Volvo, Zettelmeyer.


As you can see they are no stranger to Mitsubishi, or many other makes for that matter. Many car companies have Mahle OEM manufacture pistons for their engines.

For all we know Mahle may be the OEM source for the stock 4G63 piston. I do not know it this is true, I just know that they do alot of OEM manufacturing.

I know that Mahle is the current manufacturer for pistons for the Ferrari 056 2007 F1 engine program.

So lets not get confused here Mahle is no newcommer to the piston market, in fact you would be hard pressed to find a company with more expierence. New to aftermarket 4G63 pistons maybe?

 

[Jon Lane]

I think they are pretty new to the dsm market, so not a lot of people have used them. Wiseco clearances are on the tight side, I'd be afraid to run a forged piston any tighter. Do you know which alloy Mahle uses in their pistons?

4032.

 

[dsmfa9nutter]

4032.

Which is, if I read the other 2 threads on this subject right, the same alloy wiseco uses in their non-hd pistons (the ones you buy for 425, hd costs around 550). The short skirt is what's bugging me, this will be a daily driver.

 

[Jon Lane]

I hear you. The question becomes, do we really need the under-pin skirt to help keep the thing from rocking, right? Or are we concerned about prematurely wearing the skirts that run orthogonal to the pin? I'd like to know too, because this looks to me like a really nice part for a responsive motor.

 

[dsmfa9nutter]

Which, to prevent slap, needs tight clearences and tight clearences aren't all that great on a daily driver. Daily driver for me is about 10-20 miles a day.

 

[treebonker]

Which is, if I read the other 2 threads on this subject right, the same alloy wiseco uses in their non-hd pistons (the ones you buy for 425, hd costs around 550). The short skirt is what's bugging me, this will be a daily driver.

Unless the tech I talked to doesnt belong at Wiseco, they never had 4032 forgings for the 4g63t. This is long before the 1400HD came out.

 

[Jon Lane]

Speaking of tech's, Tony at Mahle is inadequate to handle tech support. A half dozen emails to get half of what I needed.

 

[TSisleeper]

Mahle... 700+whp, DD (fri, sat, and sun)