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Checking valve clearance advice


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Posted

Just wondering if I need any specialised tools for checking my valve clearance?


I know I need a get a feeler gauge, can anyone recommend a decent one to me? apart from that anything else?


Is this something that's overly difficult?


I've been quoted £180 to check and if it needs any work then it'll go up to £250 I'd rather try and do it myself.


Any advice or tips will be greatly appreciated.


Cheers.

Posted

It's not particularly difficult, a mathodical approach wins every time. Pop to Halfords and grab a set of feelers - they're only a few quid.


Make sure you use a Haynes/other guide which will tell you which valves to check at which crank rotation.


I find it handy to have a set of vernier or a micrometer to measure the current shim if it's out of spec. Also, I tend to scribble the gap down in a notebook so I don't get lost and so that I can compare the gap values over time.

Posted

As Fro says really


draw yourself a little diagram of the engine numbering the valves in a way you can understand it usually something like this and write the sizes on :wink:

 

Untitled.png

 

 

Get a tube of instant gasket to.

 


NOooooooooooooooo!!!


evil stuff!!!


I have seen engines die because of this crap!


if it gets in to the motor is clogs filters, oil pick ups, strainers and oil ways! causing oil starvation!

Posted

Another hater of instant gasket, it's the mechanical equivalent of a window fitters silicone sealant - just wrong!


I always take pictures on my phone as it take things to pieces, it really does help getting it back together!


Search the net too for a spread sheet that will allow you to fill out all the values of clearances (actual and required), it will tell you what shim size you need to correct the clearance on each valve.

Posted
Search the net too for a spread sheet that will allow you to fill out all the values of clearances (actual and required), it will tell you what shim size you need to correct the clearance on each valve.

 


failing that


there is one in the haynes/workshop manuals :thumb:

  • 2 weeks later...
Posted

If casings have gaskets just replace- never ever use instant gasket, just smear gasket with touch of grease.

Setting Silicone sealant is for dry casings only, usually the only wet casings with no gasket are crank cases, use red.

Not just a question of leaks but more importantly clearances- especially cam lobes or followers.

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