Car reached 110 thousand miles this week. The valves have not been reshimmed since new.
Clearances now are;
1 2 3 4
IN 0.38 0.36 0.38 0.36
EX 0.48 0.50 0.50 0.48

Spec IN 0.40 +/- 0.05 EX 0.45 +/- 0.05
Time for shims. Pretty amazing performance all the same. What strikes me is that they are so even and the exhausts are wearing in the safe direction. I would expect these to close up normally ?

The gaps shouldn't close up
But only get bigger

If its not tappety when running dont bother touching it

It might be worth noting that the cam will be worn too
A new cam would help if power is lost

Ziggy

110 thou sound is nothing really..

When I was on a new car 'hunt'..I seen plenty of 07 -09 reg cars with more miles than that'..
So for an old pun to them miles is low..

Just drive it and enjoy..

You may pick up a teeny weeny bit of power by doing the exhausts.

But at that kind of mileage you'd expect that the valves might need recutting (which will mean doing the lot).

But, hey, I grew up with engines that needed opening and closing shims checking every thousand miles, so rather enjoy shimming.

Ziggy122 said:

The gaps shouldn't close up
But only get bigger

Click to expand...

I'm more used to old aircooled things with exhausts closing up fairly quick.

fingers99 said:

You may pick up a teeny weeny bit of power by doing the exhausts.
But, hey, I grew up with engines that needed opening and closing shims checking every thousand miles, so rather enjoy shimming.

Click to expand...

So I won't need the induction kit then
I like shimming, especially using cable ties to get them out.