Clearances

[Pigford]

Told you

You did !!!

Indeed he did

anyhoo - so No. 1, from 245 to 205 gives me an extra 0.4mm of clearance, which multiplied by 39.37 to give me thou = 15.748 thou. Less the 12 its already open, leaves 3.748 thou clearance.

Correct?

Richard

NOOOOOOOOOOOOOOOOOOO

Go METRIC - It'll save a balls-up later on

[Richard Q]

Ok, valve clearances quoted are 2 - 4 thou, or 0.05mm to 0.1mm

I have minus 12 thou - or 0.3mm, so if I go for a 205, instead of the existing 245, I will have an extra 0.4mm, less the 0.3 open valve, which leaves 0.1mm

Correct?

I am just trying to ensure that I don't make any silly mistakes as I have never worked on an engine using shims before, especially ones in mm, or in fact microns, when specified clearances are in thousands of an inch.

Richard

[KeithZ1R]

Pretty sure in the back of the Workshop manual there is a lookup chart that works it all out for yous

[Pigford]

Correct .................. a 245 shim is 2.45mm thick.

eg: So to increase clearance by 0.1mm - go for a 235 shim

[Keefleaf]

If you get stuck P.M. Buzzard.
He's set up for all cylinder head work- lots of knowledge+machinery
'

[jimmock]

Now this kinda thread is why I'm on here Guyz!!!

It gets me "all going" !!!!

[Richard Q]

Is Jerry about at the moment?

Can seem to reach him on PM

[Ginger Bear]

It can sometimes take a while to get a response from Jerry...... Just be patient.

[zed1015]

:??

Ok, valve clearances quoted are 2 - 4 thou, or 0.05mm to 0.1mm

I have minus 12 thou - or 0.3mm, so if I go for a 205, instead of the existing 245, I will have an extra 0.4mm, less the 0.3 open valve, which leaves 0.1mm

Correct?

I am just trying to ensure that I don't make any silly mistakes as I have never worked on an engine using shims before, especially ones in mm, or in fact microns, when specified clearances are in thousands of an inch.

Richard

You need to go for 0.10 to 0.15mm ( 4 to 6 thou )
Kawasaki amended the clearance specs to the wider figures and only specified the imperial equivalent for the Americans who refuse to go metric and for the early 70's mechanic who didn't have a set of metric feelers coz they were only used to working on oily old brit stuff.
Also I strongly advise not to use shims as thin as 205mm for the head rebuild.
You will soon need to pull the head apart again to trim the valves as you will quickly run out of shim sizes as 200 is the thinnest.
You need to set the valve heights now so that you start with at least 2.5 mm shims which will ensure plenty of miles before major head work is needed again.