blade7

Thanks for the tip, mailed them to ask for info.

Paul.

lejams

IIRC, Heritage sells for 16 valve. Shameless plug for anyone who wants 104.5 8 valve here.

blade7

Heritage told me they have an 8V 104.5 Mahle piston, never heard back when I asked about the price though. I dont see the point of an Alusil compatible piston if a liner and piston can be installed for similar money.

gruhsy

Ship them as used with no value

blade7

Taking a chance with no insurance if they go missing though, I've been told to ship as used/samples/gift etc, but although they may be better than Wossner I'm not sure they're 50% better.

Darwantae951

Wossner will do whatever you want. They will even go so far as to send you the engineering drawings for one set of pistions just to make sure they are exactly how you want them. If you want the piston pin vertical, they may say "hey, that won't work" but they will make it if you want.

Mahle:


Wossner


And yes, they have alusil coatings so that you can run them in your alusil bores. The great thing about Wossner, is they will not only do whatever you want, but it is no increase in price. They also will make you one set, and not want 50 sets made in a batch.

lejams

Mahle:


FWIW the Mahles in the photo are a little different then what I have.

I cannot comment on the Wossners except to what is posted on the board which AFAIK is all positive. Distinguishable difference is that Mahle is OEM. Does anyone else know if Mahle continues to be the OEM choice for all Porsches built?

lejams

I don't remember seeing them on their site. Maybe it's like Andial where they don't stock them, but they can get them, possibly even from Andial.

It's been run through a number of times - keep it Alusil vs. sleeving vs. plating with Nikasil or NiCom. Everyone has their ideas, preferences, budgets etc. Think there has been success with all and debatable pros and cons here and there.

Although there are many ways, my choice sticking with Alusil & Mahle, all things considered - good build and tune is not a wrong.

evil 944t

Darwin,

Almost all piston companies will send you drawings before they make them. Once you approve them, they make them. This is how they keep you from saying "thats not what I wanted" when they show up.

Mahle uses the newest box or box slipper skirt style which is much better than the old mahle/Andial style and they come with many coatings.

Here is a pic of I few I made...

Darwantae951

I'm failing to track where Wossner falls short here.

blade7

I'm inclined to agree and If my project block is in size I'll go with coated pistons, I just wonder if Mahle's pricing is linked to Porsche in some way or stems from when they had the 104mm Alusil market to themselves.

lejams

Mahle is huge, a leader and standard bearer. They are the OEM with an unchallenged reputation, plus long standing relationships with Porsche, etc. As earned they have their price and are probably relatively unaffected by such a small loss of market share.

On integral parts I have never minded paying the OEM standard of price for the reassurance of what you get. Not at all suggesting that Wossner aren't up to the task because they're cheaper as it appears quite the contrary. But if I want to save money, I look elsewhere to do it. Problem is much of the time elsewhere seems to be an elusive apparition.

I'm not unhappy that I paid for Mahle, and I doubt you'll find anyone else to say differently.

blade7

That's fair enough. Geography and taxes are against us though.

Thom

What kind of coating do Wössner use for their Alusil-compatible pistons?

AFAIK Ferrostan remains the most suited coating and it's a Mahle patent.

lejams

Mahle has updated the tech to Ferroprint.
http://www.mahle.com/MAHLE/en/Produc...soline-engines
<For the application in aluminum cylinder surfaces, MAHLE uses the iron particle reinforced synthetic resin coating FERROPRINT®. MAHLE's new FerroTec® galvanic iron layer is another ongoing development available on the market. The FerroTec® technology coats the entire skirt evenly, resulting in improved running properties. These coatings are necessary to enable the combination of aluminum pistons with pure aluminum engine blocks and hence represent an essential contribution to an overall reduction in engine weight.>