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Join Date: Oct 2009
Posts: 20
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Max-Moritz Conversion
I am in the process of rebuild on my '80 SC - I have found that the piston/cylinder combination is a 98 mm bore - referred to as the "short stroke 3.2L conversion".
All is going well except I am having difficulty finding a source for the piston rings - the piston marking is "Mahle 98P11". Anyone know where I can find rings for these pistons? |
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07-06-2010, 08:40 AM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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You will need to measure the ring lands and figure out which ring sizes you need. I built my 3.2SS with 98mm Mahle and had to get custom rings made from Total Seal. However, I think my top ring land had been recut from 1.5 to 1.75mm.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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07-06-2010, 08:43 AM
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Thanks
My ring land sizes are 3.0 mm thick on the oil rings, 1.2 mm on the compression rings. Is custom machining the only solution? |
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07-06-2010, 08:47 AM
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Location: Los Angeles, CA
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1988 Carrera Coupe |
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07-06-2010, 09:22 AM
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Location: Dayton Ohio.....Americas Playground!!!
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I just bought a set of Max Moritz rings from Rennsport Systems dot com. And no, pelican didnt have them.
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1997 C4S stock...ish 1970 911T Restored Hot Rod....Sold  http://forums.pelicanparts.com/porsche-911-technical-forum/418411-here-my-new-old-project-lilly.html |
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07-06-2010, 01:21 PM
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Thanks - I am contacting Rennsport for their feedback on availability.
Do you recall the thickness of the compression ring set? |
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07-07-2010, 06:13 AM
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Join Date: Mar 2008
Location: Dayton Ohio.....Americas Playground!!!
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Sorry, I dont remember. I did measure the ring lands and they were standard. Steve hooked me up.
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1997 C4S stock...ish 1970 911T Restored Hot Rod....Sold http://forums.pelicanparts.com/porsche-911-technical-forum/418411-here-my-new-old-project-lilly.html |
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07-07-2010, 06:17 AM
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Join Date: Oct 2009
Posts: 20
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EBS had the exact rings I needed IN STOCK.
Thanks all the help and input. |
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07-07-2010, 07:56 AM
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