Oil temp vs. cylinder head temp question, one low and other high Options

[Bill Shaw]

Just put a new VDO cylinder head temp gauge in during the off-season (after getting scared that the oil temp gauge was off, though the car runs like it's new). After driving it around for a couple of days I have the following results (with Mobil 1, 15W50, in a '74 2 liter):

Oil temp on factory dash gauge - barely reaches the "T" after full warm up and no matter what rpm I'm at.
Cylinder head temp - around 300 driving around town (never gets beyond 325, even in traffic, such as it is in Kalamazoo); around 400 on the freeway @ 3200 in fifth at 75-80 mph

I thought the oil temp and cyl. head temp would be roughly equivalent, at least as far as I can figure from the past threads. The big difference has me stumped. Anybody have any explanation? Am I going to hear any expensive noises soon? What numbers should I be looking for?


(IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif)

[Bill Shaw]

Tested the sender and gauge last night with boiling water and it looks like the gauge is pretty accurate. Guess that means I've got some tuning and valve adjustments to do over the weekend - and the yard cleaning will just have to wait.

Glad to hear there are some folks who know where Kalamazoo is; those of us living in the middle coast can feel a little left out sometimes except, of course, for the Midwest Classic weekend!