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Old 01-13-2008, 02:54 AM   #1 (permalink)
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Mahle performance pistons

Everyone always says the commonrail pistons are best. I have heard that Arias pistons may not be the best choice for utmost re-liability.I've heard mixed things about th other brands as-well. Mahle is the OEM supplier, so they know there head from their a**, but does anyone have first-hand experience with them. I see that mahle makes a "monotherm steel racing piston"
do they make it for common-rail spec's? Their website is retarded.

Last edited by Munchies; 01-13-2008 at 03:04 AM.
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Old 01-13-2008, 04:47 PM   #2 (permalink)
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yes, as far as i know the 5.9 is the only engine availible to get those pistons for at this time. I think they are around 500 a peice, hope this helps.
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Old 01-14-2008, 01:42 AM   #3 (permalink)
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What smaller shop's carry mahle?
Anyone?

Are they in one configuration only, or can we spec pin centerline to top dimesnions (compression) , valve releif's etc...
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Old 01-14-2008, 02:05 AM   #4 (permalink)
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haiesleys machine carries them i think, but not sure, and did i read that correctly/ $3000.00 for pistons?
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Old 01-14-2008, 05:22 AM   #5 (permalink)
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whats so special about them
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Old 01-14-2008, 03:50 PM   #6 (permalink)
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Well, if they are what they are saying they are.(heh)
They might be the 'king' of the aftermarket piston's. They are STEEL pistons. They should be QUITE a bit tougher than the OEM pistons, and be super reliable.

What bout rings? A few people say total-seal co. rigns are great but have a short life. (race-only)
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Old 01-14-2008, 09:05 PM   #7 (permalink)
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munchies- give mahle a call they can answer all your ?'s there number is 888-255-1942
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basically stock if i would have built it at the factory
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Old 03-07-2010, 09:11 PM   #8 (permalink)
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How are pistons cooled on cummins engines? Would the aluminum conduct heat better then steel pistons? also would changing the weight of the pistons effect the ballance of the engine? would you have to compensate for this by ballancing the crankshaft (if they are even balanced i have no idea) or is it not a concern?
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Old 03-07-2010, 10:24 PM   #9 (permalink)
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How are pistons cooled on cummins engines? Would the aluminum conduct heat better then steel pistons? also would changing the weight of the pistons effect the ballance of the engine? would you have to compensate for this by ballancing the crankshaft (if they are even balanced i have no idea) or is it not a concern?
you really should balance the roating mass if you make changes internaly. as far as if they are better its hard to say not many ppl drop 3k on pistions. and i guess it depends what your trying to do, for a street truck i would say they are way overkill. there are guys here running 900hp with stock pistons and rods so if your not going to be well over 1000hp why bother? van over at hasiley told me i would be throwing my money away buying carlio rods and that stock forged rods are all that is needed for my build. and when we talked about the my build and what was needed in detail he never said i should change the pistons, he said i need to stud the main and run a gurdel on it but nothing more.
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Old 03-08-2010, 10:07 AM   #10 (permalink)
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Call Mumua Diesel, he has the cheapest prices and there are cheap one them the ones that are 500 a piece, but those are bomb proof it there monotherm's (sp?) IIRC that are that $$$. Like I said though you can get other ones through them for much cheaper.
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Old 03-08-2010, 07:36 PM   #11 (permalink)
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Yeah you always balance your rotating assembly when rebuilding even with stock internals.
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Old 03-08-2010, 08:16 PM   #12 (permalink)
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Yeah you always balance your rotating assembly when rebuilding even with stock internals.
Sorry for being so ignorant, but how do you balance the rotating assembly?
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