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Engine seems very hot...normal?

1.1K views 9 replies 7 participants last post by  glane85  
#1 ·
Hi,
After an embarrassingly long time, I've finally had the time to complete the thermostat change.
I fired the car up this evening, and ran it up to temp, with a combination of highish revs and idling, the temp gauge moving to its normal position. The fans never came on, I had it idling for maybe 10mins before turning the car off.
The rad and hoses were hot. But what surprised me was the temp of the front bank cam cover and the front bank lower inlet manifold. They were almost too hot to touch.
Now, even an hour later, both are still very hot.
I can't say I've ever spent any time feeling parts of the engine after running, so not sure if this is normal or not.
So yes, a strange request, but can anyone suggest whether this is normal or not?? If not, then any reasons why this is the case?

Just to confirm what I have done:
-changed thermostat housing and other hard tubing
-changed temp sensor
-changed black upper inlet manifold and both VIS motors
-fitted 76mm tubing from throttle body to foam cone air filter positioned in the wing
-fitted an oil catch tank on the 12mm breather side (after reading various discussions, general concensous seems to be that for more town driving, go for the smaller breather and for faster/track driving go for the 12mm breather)
-had the injectors cleaned

Upon staring it was initially quite lumpy, which I put down to maybe a bit if an air lock in an injector? Anyway that cleared and ran fine, apart from a sticky throttle/butterfly.

Any thoughts will be great fully received!

Thanks!
 
#3 ·
hot engine

after ten mins idling i would expect it to be hot, as its standing the engine doesnt have any cold air passing through the rad because you arent moving.
if i do a coolant change or work on coolant system i take it for a run to get it up to temp as it warms up quicker when being driven, i then park up back home but leave engine running until the fans kick in.
 
#5 ·
If the radiator is hot, you can rest assured coolant is circulating - what you need to remember is that the thermostat is usually 82 degrees, and if the radiator is hot that's open (so the engine is at least that hot).
You're talking late 90s before the fans kick in - so everything will be very hot indeed by that point.
A freshly poured cup of tea is around 80 degrees as the cup takes a lot of the energy - try putting your finger in that, and you'll soon realise you have nothing to worry about. :p
 
#7 ·
A freshly poured cup of tea is around 80 degrees as the cup takes a lot of the energy - try putting your finger in that, and you'll soon realise you have nothing to worry about. :p
Except at Macdonald's of course. They somehow manage to get their tea to at least 150 degC in those Styrofoam cups. Unlike Scotty, it seems they CAN change the laws of physics, Captain...
 
#9 ·
I wouldn't worry too much m8 I've just bought my second ZS180 and prior to doing anything to it I've started with cooling and air con checking and first of all was to double check fans are working as the relays that turns them on can go ****t* sometimes to find out that the air con one is missing and that yes at idle it will take quite sometime to warm up enough to start the cooling fan???but it ends up doing its job.

Hope it helped !!! And yes they run very hot indeed !!!

Cheers,

Alex