I have always placed the sensor against the aluminium head. Probably doesn't make much difference but the steel plug has less heat conductivity than aluminium.
Rob PO Box 129, Lawson, NSW, 2783. phone 02 47592307 mobile 0429 493828 ............................................. --- On Sun, 18/3/12, Ian Mc Phee <[email protected]> wrote: From: Ian Mc Phee <[email protected]> Subject: [DOG mailing list] Spark plug washer To: "DOG LIST" <[email protected]> Received: Sunday, 18 March, 2012, 2:43 PM A while ago I ran out of the wide copper spark plug washers and was using cheapies out of a kit. I found one washer decided to grow and thus would have been a poor seal. I have on order more champion washers from USA (AS&Sco) and look forward to replacing same ASP. Also the larger washers transfer heat better I am told. I think like most I use 2 washers under plugs (one where there is a CHT sensor). I have heard you have the sensor between plug and extra washer - Anybody know? Ian M
