HIGH COMPRESSION 325i ENGINE

[Tripper]

Hi Zoners,

Does anyone know if there is a visual difference between the high compression 325i engine to a standard 325i engine??

thanks,
tripper

[gromgsxr]

on the left hand side where the engine number is there will be a code 256K or 256E, k is lower comp and e is higher comp. as far as im aware there were 3 diff comp ratios, 8.8-1 9.4-1 and 9.75-1 the 9.75 uses a different crank pulley it has no teeth on it as the engine rpm signal comes from the flywheel

[Tripper]

Thanks gromgsxra˜„

Apologies, but where exactly on the left hand side?

Thanks
Tripper

[Grrrmachine]

The plate is just above the joint with the sump, near the dipstick. It's only the size of a matchbox, and is easier to see from underneath the car.

[Brianmoooore]

The plate

"Plate" might be a bit misleading, suggesting something that is screwed or riveted on. It's just a shallow boss on the block that has been machined flat and engraved.