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Cylinder head temp range
Lateral - February 27th, 2013 at 07:54 PM

Hi guys

I intend to fit a cylinder head temp sensor to the ECU in my car. Probably a Bosch sensor like this http://www.justkampersaustralia.com/search2?location=shop&method=match_al...

My question is : what temperature range, in C degrees should the sensor be able to handle? I suppose in other words, what's considered a normal/good operating temp
and what is considered "too frigging hot"?

Thanks
Regards Greg

Sides - February 28th, 2013 at 12:55 PM

How long is a piece of string in some ways... what's "normal" will depend on all the usual things.

My car has a pretty good cooling system on it, and I'm usually around 320F, sometimes a smidge below 350F when am well and truly on it during a multi lap sprint or similar.

For the sender you obviously want a larger range, say up to 500F which is what most gauges seem to go to.

That said, I'd be switching off way before letting it go that high !!!

Lateral - February 28th, 2013 at 05:03 PM

Hi Dave

What I'm trying to determine what temperature is considered to be "too hot" and therefore shut down....

Regards
Greg

Sides - March 2nd, 2013 at 06:55 PM

Ok, figure try this a slightly different way then, since I put all the info in above...

Quote:
Originally posted by Lateral
My question is : what temperature range, in C degrees should the sensor be able to handle?



Up to 500F, or 260C.

Quote:
Originally posted by Lateral
I suppose in other words, what's considered a normal/good operating temp



320F normal, up to 350F when working hard. (160C - 175C)

Quote:
Originally posted by Lateral
and what is considered "too frigging hot"?



Lots of variables, but basically anything above "normal" for your engine seriously consider switching off because obviously SOMETHING is going on.

Think trends rather than absolutes.

Personally I'd back off at probably 360F and shut off at 375F, but that decision is totally based on what my normal is, how quickly things cool under idle, what the heat soak is like when switched off etc. etc. which I've only learnt through watching the gauges under the different scenarios.

Chuck a gauge in and learn your engine.

:tu:

Lateral - March 2nd, 2013 at 09:14 PM

Thanks Dave

Regards
Greg