Minimum Shim size?

[mattrosersv]

Just about to commence service and check shims again. I have read on here before, but can't find, a minimum suggested shim size for AJP.

Anybody have any comment about minimum size, I know more than a few have suffered with broken shims?

Taking a look at my spreadsheet from last time my thinest one is 2.26mm or 88.6 thou.

Car has done over 70K so due a rebuild soon (Planning to pull the whole car to bits this winter).

Cheers,

Matt

Edited by mattrosersv on Saturday 17th May 07:39

[P S K]

Have recently changed clatter cams to whisper ones. The clearances all needed adjustment and had to fit thicker shims throughout.

Showing 43k on the speedo currently. When I measured the clearances before I took the clatters out, they had stayed consistent from when I last did the clearances a long time ago.

In my opinion the valve stems stretch to a certain point and then slow down or even stop stretching altogether. The inlets tend to stretch more I think.

Took a few attempts to get them spot on due to miscalculations, mostly from using imperial feeler gauges and a metric micrometer.

From memory, the smallest shim I removed with the clatters was 1.80. Had no issues and the shims were in perfect condition after many miles.