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The TTR250 FAQ web pages -> TTR250 -> Repair and maintenance "stickies" -> Ring gaps - staggering and gapping
Post Info TOPIC: Ring gaps - staggering and gapping
TTRfan


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Ring gaps - staggering and gapping
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So it doesn't matter about spacing the rings after all. To someone who has rebuilt an engine and then had sufficient doubts to strip it out to check the spacings, all I can say is that I wish I had known earlier! 

"Staggering ring gaps when installing pistons is every bit as daft as having four tyres fitted and placing all the valves at "twelve o'clock".  One trip to Tesco and they end up all over the place. 

Equally daft are those who expect ring gaps to stay staggered when the engine is in operation.  When there is clearly nothing to prevent the ring from rotating, why should the gaps stay staggered? "

See http://www.diagnosticengineers.org/journal_%20articles/Ring%20Gaps%20vs%20Knowledge%20Gaps.php

Brian



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JOHNYBOY


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good one brian but we all do it & have done it for years

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mossproof


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Ooh, controversial stuff Does this relate to a smokey 325?
Interesting article Brian, thanks for the link.
And I too am struggling with the extra hour in bed from the clocks going back
Simon.

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TTRfan


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mossproof wrote:

Ooh, controversial stuff Does this relate to a smokey 325?
Interesting article Brian, thanks for the link.
And I too am struggling with the extra hour in bed from the clocks going back
Simon.

Nah - I was thinking of engine rebuilds back along. I would button up an engine, go to bed and a doubt would appear in my mind about the ring spacings - had I or hadn't I set them? It was no good. With my OCD I would just strip them down again to check and, of course, I had set them correctly disbelief  

To now find that I had wasted my time furious

However, Mr Yamaha says in the workshop manual that we should set the spacings so I will continue to do it by the book but stop worrying about them biggrinbiggrinbiggrinbiggrin

Yeah - I got up normal (old) time as did our little dog but the other half is still sleeping............

Brian



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