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-   -   Mahle racing piston/ cyl set ? (http://forums.pelicanparts.com/off-topic-discussions/730878-mahle-racing-piston-cyl-set.html)

Drdogface 01-26-2013 05:42 PM

Mahle racing piston/ cyl set ?
 
Trying to sell some stuff a friend had. He had a stroke and will never drive again...sad story that many of you know

Anyway, he has a set...NIB... of Mahle 100mm racing pistons and cyl for an 84-86 Carrera that he never even took out of the box. I have them listed on eBay but would like to know what HP you'd get with them installed in a good tight engine. That would help with the eBay ad.

intakexhaust 01-26-2013 06:49 PM

Mark- I don't know if this helps and of course there's many factors. Mid-80's Ruf Mahle kit with 98mm / 10.3:1 compression ratio, Ruf's ECU and exhaust they claimed 260 hp DIN.

(If its OK with the rules, perhaps you can post it in the parts for sale + ebay link??)

svandamme 01-27-2013 01:05 AM

Well it all depends on what kind of crank, exchaust, heads , inlet and fuel system is going to be used
And what compression the engine will have after install..
Cylinders & pistons are but one part of the equation


It's going to be a really big ball park to throw figures around

sc_rufctr 01-27-2013 01:31 AM

Quote:

Originally Posted by svandamme (Post 7233124)
Well it all depends on what kind of crank, exchaust, heads , inlet and fuel system is going to be used
And what compression the engine will have after install..
Cylinders & pistons are but one part of the equation


It's going to be a really big ball park to throw figures around

With a stock crank on a 3.2... What would the displacement be with 100mm pistons?

svandamme 01-27-2013 07:44 AM

74.4mm stroke and a 95mm bore is 3164 cc
74.4mm stroke and a 100 mm bore will be 3506 cc

a great deal will depend on what compression those pistons have and what kind of heads (ported, twin plugged, intake size and fuel system)

Drdogface 01-27-2013 08:11 AM

Thanks for the help guys. I personally dunno all this tech stuff as you can tell. Just tryin' to help Doug's family. His 911 sold as did his Hummer. House will go to a short sale. Some furniture also sold. Only these P&C's are left. I'll post all this on Parts for Sale and incl the ebay ad. Somehow I think it'll be a tough sell.

BGCarrera32 01-27-2013 10:39 AM

100 mm on a 3.2 = 3.5 L

I'd start by finding out what the set lists for new from a retailer that moves the most of them, then take pictures of everything and post them to a photobucket etc.. Nobody will want to cough up that kind of money only to find you scratched a cylinder or dented something from inattentive packing. My guess is you're North of $3k on these if they are really NIB w/rings and wrist pins.

Drdogface 01-27-2013 10:47 AM

Thanks for those suggestions BG. I have looked them up and they retail now for about $5700. All the pics I have are on the ebay listing. Wrist pins are all there. I offer a three day return. I do agree it's not likely to find someone who wants this exact set but the box was unopened when we removed it from his garage. I just had to unpack to take pics and return them to the original packing. I started the bidding at $3K..

BGCarrera32 01-27-2013 11:13 AM

Sounds like you're on the right track, good luck on the sale, and good on you for helping the guy out.

-BG

Drdogface 01-28-2013 05:26 AM

I have a nibble on eBay but he wants to know the compression ratio. I guess I should write or call a supplier but thought one of you guys might know ?

svandamme 01-28-2013 06:12 AM

any part numbers on the box?

Drdogface 01-28-2013 06:26 AM

Not on the box that I can easily read...faded over the years, but on the cyl's so I can go from there. It's shown in the ebay ad I think... I'll look at my copy and enlarge so I can read and then edit this post to give it... Stand by

Drdogface 01-28-2013 06:34 AM

OK...here's a screen shot. Not all that easy to read. I don't have them in my possession at this time but they are at a friend's home...I can go up and see if I can read it more clearly if need by... What do you think ? I'm just guessing that this is the part number..

http://forums.pelicanparts.com/uploa...1359387173.jpg

svandamme 01-28-2013 06:42 AM

The cylinders don't matter, 100 mm is 100 mm

it's the pistons that make the added value.

Drdogface 01-28-2013 07:00 AM

Well, I guess I understand that but I would have thought that these always came as a set with part number designation. I'll try to find them online at some supplier and go from there.

johonmirae 01-28-2013 07:10 AM

a great deal will depend on what compression those pistons have and what kind of headshttp://www.sdra.info/h.jpg

Drdogface 01-28-2013 07:19 AM

Understood The heads are stock...or at least I didn't find any others in his shop and it was thoroughly searched.

Drdogface 01-28-2013 07:42 AM

I have a call into the Porsche guy at Mahle in Tenn. Hopefully he can answer the question if I give him some numbers. I was referred to them by a tech at a Mahle distributor in Nv.

Another number I found on the box...just a yellow sticky note: 911 103 100 23

Maybe this will mean something to one of you guys ;) Thanks again to all of you for trying to help out... Pelican forums are fantastic...

Drdogface 01-28-2013 08:38 AM

Best info I found so far from EBS Racing is this:

EBS Racing - Porsche Parts Exclusively

While these are 98mm it's 9.8:1 Compression.

Drdogface 01-28-2013 09:15 AM

EBS says they were discontinued for some reason but would be 10.3:1 Given that and that he was going to use stock heads, what HP do you think you'd end up with.. ?

Guy from Mahle just said 10.5:1...


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