Cylinder head temp range

Lateral Wolfsburg Wizard

480 posts · joined Sep 2011 · 27 Feb 2013, 7:54 pm

#945602

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_all&keywords=cylinder+head+temperature+sensor+.

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 Veteran Volks Folk

2,220 posts · joined May 2007 · 28 Feb 2013, 12:55 pm

#945690

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 !!!

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Lateral Wolfsburg Wizard

480 posts · joined Sep 2011 · 28 Feb 2013, 5:03 pm

#945715

Hi Dave

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

Regards
Greg

Sides Veteran Volks Folk

2,220 posts · joined May 2007 · 2 Mar 2013, 6:55 pm

#945990

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

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

Up to 500F, or 260C.

Lateral wrote:I suppose in other words, what's considered a normal/good operating temp

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

Lateral wrote: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.

👍

VWDCQ vice pres & web dude - vwdcqinc.org.au
Join a car club - get car peeps

My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners

Lateral Wolfsburg Wizard

480 posts · joined Sep 2011 · 2 Mar 2013, 9:14 pm

#946021

Thanks Dave

Regards
Greg