Standard Xu9 Conrod Weight Variation

[Tom Fenton 1,542]

So today I've pressed the gudgeon pins out of a set of rods, the pistons I'm not bothered about but I want the rods.

 

Out of curiousity I weighed the rods, they are around the 732g mark, but who wants to hazard a guess at what the variation between a set of 4 was?

[welshpug 1,661]

IIRC the maximum difference in weight between two conrod+piston assemblies is meant to be 13g max, anywhere near that?

[Miles 331 1 Cars]

Can;t recall off hand, But my balancer alway's seems shocked by the amount

[Cameron 16]

I'm gonna say 15 grammes.

[grandos 16]

15grams surely anything over 1-5grams would introduce a big problem at 6000rpm

[jimistdt 1]

For arguments sake I will say between 8-9 grams, around 10% tolerance. (French style)

Edited November 1, 2008 by jimistdt

[Cameron 16]

Yeah, probably. I just thought I would aim high.

[Tom Fenton 1,542]

Lightest 731g, heaviest 734g, not shocking I thought for a mass produced engine.

[benlilly 0]

That's really good. Mine were WAY out. Can't remember how much but it added quite a few £ to the final bill for balancing my components.

[Cameron 16]

Ah disappointing.. I thought it was going to be some outrageous number. You mislead me!