Oval crank pulley BKD engine

[dekhelia]

I gather (from Crasher) that the oval crank pulley on these engines is not that common....does this mean that I need a different cambelt than the round-pulley motors? I've counted the teeth on the installed belt (141, same as other BKDs), but I'm wondering what difference the oval pulley makes to any other parts required - coolant pump, tensioners, idlers etc. I don't have the VIN or VRM from the donor car, just the engine.

Anyone any ideas?

[Crasher]

The only difference is the tool used

[dekhelia]

Ok cheers Crasher. The correct tool should be here today or tomorrow.

Do you know the reason for having the oval pulley...and why it apparently wasn't common?

[Crasher]

The 038 105 263 F pulley was only used up until mid 2006 production and the upper pulley is the same as normal but interestingly the damper behind it isn't so damper 03G 109 239 B must be used with the oval pulley. Probably they later discovered no one could tell the difference.

[dekhelia]

Interesting, thanks for that Crasher. Although (it seems to me, anyway) that the slight 'relaxation of the drive belt' would have instantly been compensated, or adjusted, for by the cambelt tensioner. I wonder if this constant repeated stress on the tensioner resulted in more breakages - either of the tensioner, or the tensioner stud? Or maybe my logic is a bit off, dunno.