Set used Mahle E12 89.47mm "grand piano" pistons

[AWatry]

Price: $50

Location: Berkeley, CA

Description:

Set of four used Mahle E12 2002 pistons, half mm oversize, 89.47mm. Short dome, 2mm tall.  Look good used, with rings, pins, clips, came out of a running engine a couple years ago, replaced by an E30 engine.  $50 plus shipping.

[Jdddrigot]

Do you still have these?  I haven’t been able to see the number stamped into mine but I think it’s closer to 89mm and was looking for 88.98. Any ideas if these would work if the other pistons were 88.98? TIA. 

[tech71]

6 hours ago, Jdddrigot said:

Any ideas if these would work if the other pistons were 88.98? TIA. 

Only if one of your cylinders was bored to 2nd oversize so no.

[slowpoke]

What would be the compression ratio?

[Conserv]

31 minutes ago, slowpoke said:

What would be the compression ratio?

Those appear to be 8.3:1 compression ratio pistons, the lowest of at least three OEM piano-top pistons (8.3, 9.0, 9.5), suitable for an E12 head.

 

Regards,

 

Steve

 

[tech71]

Most likely 8.3:1 or possibly 8.1:1

Depends of mfg date.

Edited May 12, 2021 by tech71

[Martenmeyer]

Hi, do you still have the pistons for sale? I might be able to use them. Thanks