Valve clearance/noisy tappets

tonydgray · Oct 5th, 2010, 11:19

Hi all

The engine on my 1973 145 was a little noisy so I thought I would take a look at the tappets and check that they have the correct clearance. The clearance range that I used was 0.016" to 0.018" although I have set them on the snug side being 0.016". However I have a couple of questions following this work:

1. Prior to adjustment I noticed that all bar one of the tappets were set lower than the 0.016" minimum, probably around the 0.014" region. Can anyone think of a reason for this and if it would have done any damage? Please read on to question 2 as this may be the reason!

2. With the clearances up at 0.016" now the engine sounds like a bag of spanners, is this normal or have I got a big repair bill on the horizon? :-(

3. How is it possible to set the clearances when the engine is warm or cold, wouldn't the temperature make a difference to the gap?

Thanks

Tony

Oct 5th, 2010, 11:19	#1
tonydgray Member Last Online: Feb 19th, 2024 11:19 Join Date: Sep 2010 Location: Atworth	Valve clearance/noisy tappets Hi all The engine on my 1973 145 was a little noisy so I thought I would take a look at the tappets and check that they have the correct clearance. The clearance range that I used was 0.016" to 0.018" although I have set them on the snug side being 0.016". However I have a couple of questions following this work: 1. Prior to adjustment I noticed that all bar one of the tappets were set lower than the 0.016" minimum, probably around the 0.014" region. Can anyone think of a reason for this and if it would have done any damage? Please read on to question 2 as this may be the reason! 2. With the clearances up at 0.016" now the engine sounds like a bag of spanners, is this normal or have I got a big repair bill on the horizon? :-( 3. How is it possible to set the clearances when the engine is warm or cold, wouldn't the temperature make a difference to the gap? Thanks Tony

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