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Edward · Alfa 33 Joined: 21 Sep 2003 Posts: 307 Location: Bristol

Hi all,

I need to change the crank over in one of my engines. Does anyone know how critical it is to get the end float right from one engine to another? Can I just take the crank and end float washers from the doner engine and fit them into the existing block?

Any advice would be greatfully received.

Edward.
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markgp4 · Posted: Fri Nov 17, 2006 9:50 pm Post subject:

never tried it but as with most things mechanical i would imagine there are tolerances to stay within else damage will result...
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Edward · Alfa 33 Joined: 21 Sep 2003 Posts: 307 Location: Bristol

Mark,

I would imagine so - I remember reading recently that the end float must be .35mm. It looks pretty difficult to measure. I was sort of wondering if when swapped over they all end up being in the same range unless something is very worn?

Edward.
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The faster the better.

Corin · Alfasud Joined: 28 Aug 2005 Posts: 55

Dont know how difficult it is, feeler guages would probably do it. End float is pretty important IMHO. When you press the clutch it tries to push the entire crank sideways, hence the use of thrust washers. Excessive endfloat will at a guess cause the crank to pull the pistons sideways in the bores? Had an engine with shot thrust washers once and when you pressed the clutch the engine almost stalled. If you have it apart anyway it's best to get it right.

Corin

Edward · Alfa 33 Joined: 21 Sep 2003 Posts: 307 Location: Bristol

Corin,

Hmmm..... I hadn't thought of feeler gauges - that is quite a good idea. I the book is shows some elaborate dial gauge on a magnetic block reading the distance whilst you lever the crank in one direction.

I think I may be paying a visit to Ebay to buy some metric feeler gauges.

Thanks for the idea.

Don't know what I am going to do if it is not .35mm!!!
_________________
The faster the better.

Corin · Alfasud Joined: 28 Aug 2005 Posts: 55

Often the wear isnt too bad, should be within tolerance. The magnetic dial guage could probably be hired from a tool hire place, have one myself but that one is in imperial, any engine modder or decent garage should have one but would probably be loath to lend it. If the feeler thing doesnt work give me a shout and i could jiffi bag mine up and post it ya to use, when you ready to use it., if you pay postage. Good luck.