When fitting my gearbox to my engine earlier today I noticed that there is a small amount of movement (end float) in the crank.

Is this normal ??

The engine was from a low mileage (27K) 2007 Fiesta ST therefore I would not think the bearings should be worn at this point.

I have only replaced the rod bolts with ARP ones and obviously the sump therefore the crank has not been disturbed.

Any help / guidance would be appreciated.

Regards,

Steve

I have an ST150 motor and I haven't noticed any play/end float, its done 22k miles and from a 2007 car.

From info I've seen the end float should be within 0.22 - 0.43mm (mine was 0.26mm).

http://duratec.wikispaces.com/Duratec_Engine_Specs

Thanks for the responses.

I will check... just need to get a dial gauge.

Out of interest would this allowable amount of float provide what can only be described as a clunk when you hold the flywheel and then push and pull it ??

End play
0.22-0.43 mm (0.008-0.016 in)

Thanks,

Steve

I had a spitfire once that when you pushed in the clutch, the fanbelt flew off!

quote:

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Originally posted by Mark Allanson
I had a spitfire once that when you pushed in the clutch, the fanbelt flew off!

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Erm - I know!

Definitely would have got a clunk from a Spitfire when it's fanbelt flew off...

But seriously I think when I was checking the end float on my engine I could get a clunk. If you can get a dial gauge hopefully it will put your mind at rest. Have to say I had a laugh trying to attach the dial gauge magnetic base because of the alloy block. I guess you could attach it to the flywheel though?!

Finally resolved......

Managed to borrow a dial gauge and measured at 0.31 so not bad at all, pretty close to mid point.

Amazing that 0.3mm feels like huge movement in practice.

Thanks for all the advice.

Excellent pleased to hear that. It's always good to be able to your own mind at rest.