Faulty thermostat?
Faulty thermostat?
Author
Discussion

vee5

Original Poster:

92 posts

227 months

Wednesday 23rd July 2008
quotequote all
My 450 only shows about 70 (or a bit less) on the temp guage during normal driving but if I leave it ticking over the fans kick in at about 87 degrees. Reading some other threads it sounds like this may just be the guage under reading slightly but I am concerned that the normal running temp is too low - does this sound like a faulty/incorrect thermostat, as I'm tempted to try changing it?

dogbucket

1,256 posts

232 months

Wednesday 23rd July 2008
quotequote all
sounds ideal to me, same as mine. Saw about 93 after sitting in traffic for along time a few days ago which is the highest I have seen. Cruising is usually 70-80, maybe lower in the winter.

WOO5IE

967 posts

228 months

Wednesday 23rd July 2008
quotequote all
It sounds about right to me and the same as mine.

There are many threads re running temp but there is a concensus with good reasons to run the engine as cool as possible. Something to do with liners etc. The engine needs to be at operating temp to get right mixture etc so unless you are drinking fuel it sounds OK.
The gauge is only a guide.

If it were running too cool then the mixture would be rich so the plugs would be black. It might be worth checking a couple for peace of mind.

There is a thread that explains the theory of running cooler

Hope this helps

Trev

That Daddy

19,462 posts

252 months

Wednesday 23rd July 2008
quotequote all
WOO5IE said:
It sounds about right to me and the same as mine.

There are many threads re running temp but there is a concensus with good reasons to run the engine as cool as possible. Something to do with liners etc. The engine needs to be at operating temp to get right mixture etc so unless you are drinking fuel it sounds OK.
The gauge is only a guide.

If it were running too cool then the mixture would be rich so the plugs would be black. It might be worth checking a couple for peace of mind.

There is a thread that explains the theory of running cooler

Hope this helps

Trev
Nuff said thumbup

Johno

8,593 posts

313 months

Wednesday 23rd July 2008
quotequote all
As higlighted you don't want to overcool the engine.

Keeping running temp around 80 degree is perfectly good enough to maintain stability of internals etc . .

Yours sound like it's about right. It also sounds like you have an 82 degree stat rather than a 74 which is preferred by many - myself included for summer running- moving back to an 82 for colder weather/winter running.

WOO5IE

967 posts

228 months

Wednesday 23rd July 2008
quotequote all
TRy this link as it has some info on recommended temps etc

http://www.pistonheads.com/gassing/topic.asp?h=0&a...