Author Topic: 400/4 crank  (Read 885 times)

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Offline steven400/4

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400/4 crank
« on: April 06, 2011, 12:17:54 PM »
i spoke to david silver today and thay told me that i car,nt take a crank out of one engine and put it into a difrent engine does anyone know if thats true???
1978 honda 400/4 f2 my baby

Offline dave500

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Re: 400/4 crank
« Reply #1 on: April 06, 2011, 12:36:04 PM »
cases have to be kept as pairs,cranks can be swapped so long as the bearing clearances are correct.

Offline RickB

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Re: 400/4 crank
« Reply #2 on: April 06, 2011, 11:17:32 PM »
I can certainly see the wisdom in what they're telling you but it isn't necessarily correct. It can be done. How do I know? It happened to me.

A long story short, I bought a bike that was not quite right. Serial numbers filed off, nothing lining up correctly. It was only until we took the bottom end apart that it became apparent as to what was wrong. The cases were from two different engines. The crank was way off center. It was only after replacing the bearings and removing some of the dowels that hold the casings together did we get it to go back together within tolerance.

So it can be done but there's a lot of hassle and a bit of luck involved.

Rick.

Offline dave500

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Re: 400/4 crank
« Reply #3 on: April 06, 2011, 11:42:20 PM »
keep the cases as pairs,,the cranks can be swapped,the cases are machined as a set.

Offline steven400/4

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Re: 400/4 crank
« Reply #4 on: April 07, 2011, 09:48:54 AM »
thanks guys but i got back intouch with dss today and a nice man [a very nice man ] sorted everythink out for me so all good
1978 honda 400/4 f2 my baby