[T3] Mahle 1500 pistons

[Dave Hall]

311 107 101 AA is right for engine 65746 to 255 349 and up to 1 100 000 for
M249 (the normal compression ratio 1500 engine), it says in the parts
manual.  83.0mm is standard size. 

311 107 105 AA is 0.5 o.s. (ie 83.5 mm).

Are you sure the SP is 0.05 not 0.5mm ?

You had better measure them to see if they're 83.0 or 83.5mm, and maybe
measure the bore or clearance just to check what the barrels are.

Dave
UK VW Type 3&4 Club
===================

-----Original Message-----
From: type3-vwtype3.org-bounces at lists.vwtype3.org
[mailto:type3-vwtype3.org-bounces at lists.vwtype3.org] On Behalf Of Keith Park
Sent: 07 September 2012 01:44
To: type3 at vwtype3.org
Subject: [T3] Mahle 1500 pistons

Looking over the NOS Mahle flat tops im going to use in the crate, they say
SP0.05 mm on them in addition to the 82.95 number.
They are part number 311 107 105 AA

There is no indication anywhere on them that they are oversize other than
maybe that SP number that is on the piston itself, the box is not marked
oversize anywhere, any idea what that SP number is??

Thanks

Keith


Top Notch Restorations
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