| Author |
Message |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2355
Reg: 04-2006
|
OK, this arvo i successfully replaced my old radiator with a new one.
I have a questions though, when i removed the two small hoses at the base of the radiator from the brass pipes, about 80ml of deep dark red thick oil drained out.
What were these hose lines for and will this 80ml loss mean anything ?
Overall, the transfer took 2 hours. |
Nathan Smith
Tinkerer
Victoria
V8 Limited
Posts: 19
Reg: 04-2009
|
The hoses in which you disconnected and the red oil coming out is transmission oil. There is a cooler inside the radiator (Auto cars) that aids in cooling down the transmission oil. A manual radiator does not have them. I take it that you would be running a transmission cooler as you have a supercharged V8 and transmission cooler needed to aid in more power through the driveline. But in saying that wouldnt you have disconnected the lines from the radiator in the first place and ran them into the transmisson cooler? |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2357
Reg: 04-2006
|
Spot on Nathan.
Cheers mate  |
Matthew Sharpe
Goo Roo
North Island
JZZ31
Posts: 4375
Reg: 10-2005
|
The old cooler is most likely in line with the new one. |
Nathan Smith
Tinkerer
Victoria
V8 Limited
Posts: 20
Reg: 04-2009
|
Not a problem Adam. I myself will most likey be going to a transmission cooler down the track as they tend to cooler the fluid more then when it goes through the radiator. But it also depends where abouts you place the cooler as well... |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2360
Reg: 04-2006
|
My cooler is located in front of the Aircon panel.
Its all good |
Nathan Smith
Tinkerer
Victoria
V8 Limited
Posts: 21
Reg: 04-2009
|
Yep like 90% of people put it there What type of cooler are you running? |
Tai Johnsen
DieHard
QLD
UZZ31 - Supercharged & Intercooled V8
Posts: 767
Reg: 04-2006
|
It's a PWR cooler...
How'd it go Adam? Any change in temp?
Make sure you remove the diagnostics jumper too! |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2361
Reg: 04-2006
|
GDay Tai,
The exchange went well, but i only had it on idle for 15 mins afterwards to bleed the coolant through. (no highway driving yet)
Diagnostics jumper ? |
Tai Johnsen
DieHard
QLD
UZZ31 - Supercharged & Intercooled V8
Posts: 769
Reg: 04-2006
|
The engine diagnostics port has/had two pins shorted to run the hyrdo fan flat out..
You shouldn't need it shorted now. |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2365
Reg: 04-2006
|
ahhh thats right.
I'll have a look at it tomorrow mate.
Cheers for reminding me. |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2375
Reg: 04-2006
|
I have now removed the hydro fan pin
I forgot to mention the reason why I went along with a new radiator.
I believe my old radiator was blocked as this was evident with the following symtoms.
In traffic, the digital temp gauge located in the middle of the upper radiator hose would read 87c. On the highway the temps would gradually rise into the mid 90's whilst peaking at 96c on a 20 minute hwy run. Then it would lower back to high 80s when i slow down. The temp gauge in the dash would read normal.
Now i have the new radiator in place i will document the new temperatures. |
Mike Dobkin
TryHard
Essex
Soarer TT
Posts: 171
Reg: 10-2008
|
Sounds like a possible airflow problem to me - have you removed any of the plastic shrouds which guide the air to the rad?
Actually, thinking again, you are only looking at a rise of less than 10 degrees so I wouldn't worry about it - probably just a normal rise under load |
Nathan Smith
Tinkerer
Victoria
V8 Limited
Posts: 22
Reg: 04-2009
|
I would say the radiator is blocked. It happens over time thats pretty much why you get the radiator rodded and cleaned out. The good thing about the radiators in Toyota's etc is the fact that you can get this job done due to having plastic end tanks that can be taken off by the radiator place without any damage to them. |
Tai Johnsen
DieHard
QLD
UZZ31 - Supercharged & Intercooled V8
Posts: 771
Reg: 04-2006
|
Adam Peterson wrote on Thursday, June 11, 2009 - 07:48 pm:In traffic, the digital temp gauge located in the middle of the upper radiator hose would read 87c. On the highway the temps would gradually rise into the mid 90's whilst peaking at 96c on a 20 minute hwy run. Then it would lower back to high 80s when i slow down. The temp gauge in the dash would read normal.
Perfect!!!
Thats is exactly what I was hoping to see...
The dash temp guage is a total POS !! |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2378
Reg: 04-2006
|
im still waiting to test the new radiator to give a conclusion to this problem. I havent been able to drive the car for a month |
Damian Ware
DieHard
Victoria
UZZ32
Posts: 960
Reg: 10-2005
|
Test on my car indicated the temp gauge on the dash reads the middle position from about 80deg C to 105deg C.
Not exactly an accurate read out with 25deg C for the middle position.
I have also found the fan only turns on when the water temp gets to 95-97deg C which is probably why they never run unless sitting in traffic. The sensor for the fan is located in the radiator and I was using the water bridge temp sensor for measurement which accounts for the variation between turn on temps and different conditions.
IMO the V8's run hot and I personally would prefer them to start to run the fan earlier ie 92 deg C.
Normal operating temps as a rough standard for alloy water cooled engines are supposed to be about 88deg C.
I also think this large variation before the fan comes on is not optimal given they are running a factory 82 deg C thermostat. Ie a 15 deg increase in coolant temps before they turn the fan on...
I was thinking about modifying the fan controller to change the trip point to start the fan at a lower temp ie 91-92 deg C to avoid such large coolant temp variations. |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2394
Reg: 04-2006
|
OK yesterday i went for a drive to test the new radiator without the fan jumper.
Temps went slowly up to 89 then gradually went as high as 98 after a few freeway squirts. At rest, the temps only dropped down to 97.
So perhaps the first radiator wasnt blocked after all ?
Either way, i can say the cooling fan jumper does work. |
Mike Dobkin
TryHard
Essex
Soarer TT
Posts: 175
Reg: 10-2008
|
Exactly as I thought then - less than 10 degrees is a very small fluctuation and well within normal limits. |
Tai Johnsen
DieHard
QLD
UZZ31 - Supercharged & Intercooled V8
Posts: 772
Reg: 04-2006
|
Without the jumper it was climbing past 106 degrees when I had it Adam...
87 to 97 is perfect IMO ;) |
Adam Peterson
Goo Roo
Western Australia
Supercharged & Intercooled V8
Posts: 2400
Reg: 04-2006
|
So, is that saying the previous radiator was ok ? |
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