The Lotus Grand Tourers

There's a good guide to valve shim measurement & adjustment at
http://www.benani.co.uk/articles/HG/Head_Gasket.html

Thanks for the info , all useful .

Big Jim wrote:Is it one of those jobs a novice can get right first time ?
I feel a little daunted by it and can imagine having to order new shims , over several days , having the engine in bits and forgetting how it all goes back together

I did mine a few years ago without lifting the engine and without permabond. Some pictures on page two of how I did it
http://www.lotusexcel.net/phpbb/viewtop ... ilit=shims

Thanks for the info Phil . I am getting cold feet regarding this job , it looks quite involved . I have checked the clearances and some of them are one or two thou out of tolerance . I will have a go at a cambelt change first and think about the shims when it warms up a bit . Good job on your water pump by the way.
Jim

I'd say leave them, they're out of spec, but not a great amount, the sort of variance you'd correct if the engine was apart but I'd just leave it if the engine is all together.

Thanks Andy , I was hoping someone would say that !

I've just checked my clearances.

values should be
Inlet: 0.13-0.18 mm
EX: 0.25-0.31

I have 2 valves that is questionable
Inlet 0.2-0.25 (somewhere between that i only have 0.05 resolution)
Ex 0.3-0.35 (-||-)

Can someone comfort me on this one?

//Yroll