Hi all.

 

Just a quick question, how long does it take for the 300zx TT to get it's water up to full operating temperature?

 

Mine seems to get up to full temp within a mile and this seems very quick and I'm a little worried, although it doesn't go above have way on the dial.

 

I popped the bonnet after a spirited run and it was roasting under there, even the inner wings were hot.

 

I've checked the water levels but i'm not sure I'm doing this correctly. My understanding is if the engine is cold the fluid in the rad should be brimmed and if the engine is hot you can check the level via the expansion tank?

 

 

 

Ok that was two questions. ;)

 

Chris.

It doesn't take long for the stock needle to start moving, 10 mins and it should be somewhere in the middle of it's range and it'll stay there.

I have recently had a split pipe and my aftermarket gauge is far more accurate and soon indicates to you that there is a problem, where as the stock gauge is oblivious to this and will be not register any more movement :thumbdown:.

Do you have or know anyone with Conzult? Take it for a drive plugged into that and have someone else monitor it

Mine does the same buddy, about a mile and its in the middle, im going to take Phutumsch's advice and fit an after market one at some point

I'm going to get a few AM gauges fitted asap (oil temp and pressure and water temp) but I can't see why a faulty standard gauge would give a quick reading, I could understand a slow reading.

 

As I'm new to the scene I don't know anyone or any thing about the Conzult system. I want to set up a local meet but don't have the time until October. :(

The Zed heats up very quickly, I had my car attached to an after market gauge and it was upto temp in minutes just like on the standard gauge.

 

I personally don't see the point of aftermarket temp gauges as Zeds don't tend to overheat like Renault 5 GT Turbos and the like, unless you are going for big power.

There is a list on the site somewhere of owners of Conzult. Where are you?

3 or 4 minutes of normal driving and mine gets up to about 80oC. Deffo go for some sort of aftermarket gauge if you can though, the stock ones don't tell you shite.

Base your 'up to temperature' on oil pressure. I only glance at the temperature gauge. It's the oil pressure gauge I look at to give me an idea of when it's 'up to operating temperatures'. As has been said, the coolant warms up very quickly, but I focus on oil pressure really. Once it's dropped to the correct level, you then know the oil temperature is optimal.

There is a list on the site somewhere of owners of Conzult. Where are you?

 

Havant, near Portsmouth.

 

Base your 'up to temperature' on oil pressure. I only glance at the temperature gauge. It's the oil pressure gauge I look at to give me an idea of when it's 'up to operating temperatures'. As has been said, the coolant warms up very quickly, but I focus on oil pressure really. Once it's dropped to the correct level, you then know the oil temperature is optimal.

 

But the standard oil pressure gauge seems very vague. Flies up to 60+ Psi on a cold start up, then falls to below 15Psi on idle when warm and goes up to 30Psi when driving under good acceleration.

Yeah, that's kinda what it should do.....base 'optimal operating temperature' when on idle/low revs, it falls below 15psi. They're not that accurate, granted, but that's all you really need to know for good operating temperature.

I personally don't see the point of aftermarket temp gauges as Zeds don't tend to overheat like Renault 5 GT Turbos and the like, unless you are going for big power.

 

Granted if all is well you don't need an a/m gauge but what if you have a split hose out of the blue, your stock gauge will not flinch or move up enough that it'll catch your eye whereas an accurate a/m ones needle will move considerably and you can switch off sooner and investigate :yes:.

Granted if all is well you don't need an a/m gauge but what if you have a split hose out of the blue, your stock gauge will not flinch or move up enough that it'll catch your eye whereas an accurate a/m ones needle will move considerably and you can switch off sooner and investigate :yes:.

 

agree...when the stock gauge is north it means you have no coolant and the damage could be done

Hi all.

 

Just a quick question, how long does it take for the 300zx TT to get it's water up to full operating temperature?

 

Mine seems to get up to full temp within a mile and this seems very quick and I'm a little worried, although it doesn't go above have way on the dial.

 

I popped the bonnet after a spirited run and it was roasting under there, even the inner wings were hot.

 

I've checked the water levels but i'm not sure I'm doing this correctly. My understanding is if the engine is cold the fluid in the rad should be brimmed and if the engine is hot you can check the level via the expansion tank?

 

 

 

Ok that was two questions. ;)

 

Chris.

 

Not long is the answer - as when the thermostat is doing its job, the coolant reaches operating temperature pretty quickly and stays there (about 4/10ths; or just under half way up the stock gauge). It will feel hot under the bonnet after a spirited run - even the inner wings. There's a lot crammed under there - and two turbos will generate a lot of heat which the inner wings will no doubt conduct!! Perfectly normal mate!!

 

As for checking coolant levels - always do it on a cold engine!! The rad should be full and the expansion tank should read half way up the dipstick markings. Don't remove the rad cap on a hot engine - you'll get a face full of hot antifreeze, which isn't nice!!. Although you can remove the rad cap once it's cooled off for an hour - but you may find the level has dropped if it has expanded into the expansion tank. As the engine cools further it will be sucked back into the rad. Best way to check is don't open the rad cap until after a good few hours, when it has cooled down properly!!

 

Richard:wink:

Thanks Richard. I didn't know that you should have half a tank in the expansion tank when cold, I'll double check that in the morning. :)

Thats normal, they do warm up nice and swiftly.

I used my new toy to do a few checks. This morning, startup temp was 26°C. 5 minutes later after gentle poddling to the M25, it got to 80°C and just about stayed there whether at 70mph or crawling in traffic. Maybe up to 81°C. Yesterday, the weather was sunny and hot and the running temp round the M25 to Kent was 81/82°C. When the M25 carparked and we crawled for an hour or so, it peaked at 85°C. After the traffic started again, wasn't long before back to 81°C The OEM needle stayed where it normally is and that is a smidge under horizontal (eg midway). Bear in mind this is with stock NA. I know the TT has an additional fan to cope with higher heat load.

 

Also, I once read (on this forum I think) that the stock gauge doesn't read out what the temperature actually is. It's more like: too low, getting warm, within normal operating range, too hot. So you wouldn't see any movement from the "just about horizontal" even if the temp was wandering about as long as it was wandering within the limits that Nissan programmed. Can't find the link so this may just be the meanderings of a tired mind.