Boxster piston ring end gaps?

[Smallblock454]

Check for 996 103 033 02

Mahle piston ring kit Mahle 504 40 N0
EAN 4009026929575

Contains:
Mahle 63504, Rechteckring, Nitriert, Heigth 1,2 mm
Mahle 63745, Nasenminutenring, Heigth 1,5 mm
Mahle 65959, Ölabstreifring (mehrteilig), Nitriert, Height 2,0 mm

https://catalog.mahle-aftermarket.com/eu/product.xhtml?eid=1195707#divider

Fits:
M 96.20, 85,50 Ø, 2.480 ccm
M 96.25, 85,50 Ø, 2.687 ccm
M 96.22, 85,50 Ø, 2.687 ccm
M 97.20, 85,50 Ø, 2.687 ccm
M 96.23, 85,50 Ø, 2.687 ccm

You'll find infos about correct gap in the workshop manual.

There are also piston ring sets for overbore pistons available:
Mahle 504 40 N1
Mahle 504 40 N2

Regards from Germany,
Markus

[Homeoboxter]

Originally Posted by Smallblock454

Check for 996 103 033 02

Mahle piston ring kit Mahle 504 40 N0
EAN 4009026929575

Contains:
Mahle 63504, Rechteckring, Nitriert, Heigth 1,2 mm
Mahle 63745, Nasenminutenring, Heigth 1,5 mm
Mahle 65959, Ölabstreifring (mehrteilig), Nitriert, Height 2,0 mm

https://catalog.mahle-aftermarket.com/eu/product.xhtml?eid=1195707#divider

Fits:
M 96.20, 85,50 Ø, 2.480 ccm
M 96.25, 85,50 Ø, 2.687 ccm
M 96.22, 85,50 Ø, 2.687 ccm
M 97.20, 85,50 Ø, 2.687 ccm
M 96.23, 85,50 Ø, 2.687 ccm

You'll find infos about correct gap in the workshop manual.

There are also piston ring sets for overbore pistons available:
Mahle 504 40 N1
Mahle 504 40 N2

Regards from Germany,
Markus

Thanks Markus,

This is helpful, seems the same ring set works for both 2.5 and 2.7 cars, as I thought. Unfortunately the Mahle sets are out of stock everywhere I looked at. Now I think I`m gonna go with this:

https://www.ebay.co.uk/itm/183341980498?ul_noapp=true

It`s an SPD product, which I`ve never heard about...

[Homeoboxter]

Originally Posted by Smallblock454

Check for 996 103 033 02

Mahle piston ring kit Mahle 504 40 N0
EAN 4009026929575

Contains:
Mahle 63504, Rechteckring, Nitriert, Heigth 1,2 mm
Mahle 63745, Nasenminutenring, Heigth 1,5 mm
Mahle 65959, Ölabstreifring (mehrteilig), Nitriert, Height 2,0 mm

https://catalog.mahle-aftermarket.com/eu/product.xhtml?eid=1195707#divider

Fits:
M 96.20, 85,50 Ø, 2.480 ccm
M 96.25, 85,50 Ø, 2.687 ccm
M 96.22, 85,50 Ø, 2.687 ccm
M 97.20, 85,50 Ø, 2.687 ccm
M 96.23, 85,50 Ø, 2.687 ccm

You'll find infos about correct gap in the workshop manual.

There are also piston ring sets for overbore pistons available:
Mahle 504 40 N1
Mahle 504 40 N2

Regards from Germany,
Markus

Workshop manual: does such thing really exist??

[JFP in PA]

Originally Posted by Homeoboxter

Workshop manual: does such thing really exist??

Yes, but it contains nothing about the engine internals. Porsche never intended techs in the field to work on these, so they never published anything.

[Homeoboxter]

Originally Posted by JFP in PA

Yes, but it contains nothing about the engine internals. Porsche never intended techs in the field to work on these, so they never published anything.

Yes, I have the Bentley workshop guide, which is useless for engine rebuild, Wayne`s book, and a parts list with diagrams I found on the web. That`s all I have.