Valve stem to guide clearance

[Vanden Perre]

Can someone help?

Worshop Manual mentions:
- inlet : 0.0003 to 0.0020 in
- exhaust : 0.0003 to 0.0025 in

Miles Wilkins in "Lotus Twin-cam Engine":
- inlet : 0.0003 to 0.0023 in
- exhaust : 0.0025 to 0.0030 in

The difference between the two sources for the inlet does not worry me but for the exhaust it is completely different.
Any idea which is right?

Olivier

[andyelan]

Hi Olivier

The exhaust should be 0.0025" to 0.0030". This is confirmed in the Europa TC manual.

I suggest someone has got an extra "0" in there by mistake

Regards
Andy