Hi guys
Patient:
Car: 1993 HZJ75, 1HZ with about 200-300'000km.
1HZ with 8psi Turbo and Boost Compensator. EGT installed front of Turbo in middle. I never push throttle so it never goes over 550-600Celcius!
waterpump: still stock
Weight: 3.9tons
Oil: 15W40 synthetic
Radiator: 2 year old 3 or 4 row australian stock replacement. Radiator meshing free of dirt. Has a very small leak, only loosing few drops when parked. Radiator cap is 16lbs, 1 year old.
A/C: yes, but not using it now because of this problems! A/C radiator free of dirt.
Front grill: winch and mosquito netting surely not helping air flow! But helps a lot keeping it clean!
Thermostat: 6 month old, new original Toyota.
Antifreeze: Toyota Red, before some green stuff. Flushed it 4x with water (filled and drained it again)
Viscous Clutch: stock, original. No noise when starting up or when hot. Refilled it 2x with Silicone oil. Read below...
IP: 1 year old, no black or white smoke at WOT. Also not at 4000m altitude!
I started having heat problems in Colombia and refilled my blue viscous fan clutch with 50ml of about 8000Cst Silicone oil from an RC shop.
After I rebuild the viscous fan clutch it got better, but about 1 month later in Ecuador the car already cooked 3x when going uphill at very cool air temperatures (10-15celcius). I had to stop and it already smoked out of the overfill bottle.
The car was cooking even when going very slow uphill in 1st gear and the hood open on the front and rear (spacers I installed 3 month ago)! This was never like that 1 year ago in hot Mexico when going up a mountain! Sure, the oil temp increased back then up to 130Celcius, but the water NEVER left the middle spot.
Now I can't even climb a medium hill and the oil still at 110-120 without having the water gauge go to red!
I have the feeling that there was no big difference between cold and hot, the fan pulls about the same air. Maybe little bit more when hot. And the air is ONLY when I hold my hand above the space between fan and engine. When I hold it near the timing belt cover I feel NO air.
Also when I push the throttle I feel only little bit air on my face when standing on the side of the car. Also no air at timing cover height, even when pushing the throttle.
How strong should I really feel the air? I remember on my 1972 Plymouth it was LOTS of air! On this one I feel it's not a lot?!
I removed the viscous clutch again, filled again 15ml MORE of 10'000Cst I have left and I got now about 65ml of about 9'000Cst silicone oil in there.
It got better yeah, but still, I can't say it would blow my hat of my head or feel like a tornado when cold OR hot.. it's about the same!
At least I did climb today some hills (600meters) and oil temp went from 90 to 110, I felt it kept cooler.. water kept in the middle. But 600meters was not very much, last time it was 1500m hill when it started to cook after around 1000m of height difference.
Otherwise the 200km I did today on flatter roads and small hills was ok, oil always around 80-100Celcius on flat areas at 60-80kmh and my 3.9tons.
Oh and I checked again the bimetall thing on the viscous clutch, it MOVES when I heat it with a lighter and opens the holes inside the clutch, so this works!
Can anyone tell me how strong it should pull air?
ALSO, what type of fan clutch do have Australian J7 with A/C? The blue one or the orange or even red one???
And has anyone ever done the temp gauge mod on a 24V J7? I only found information for 12V system, not for 24V J7 like mine is.
I am thinking to drill some holes and push some bolts through that damn clutch and get a new Toyota one, but don't know which color! Orange is for warmer climates and red for very hot climates. Since I have a Turbo AND A/C this would still be better right?
Please help, I worry about an engine failure!
Michel
Patient:
Car: 1993 HZJ75, 1HZ with about 200-300'000km.
1HZ with 8psi Turbo and Boost Compensator. EGT installed front of Turbo in middle. I never push throttle so it never goes over 550-600Celcius!
waterpump: still stock
Weight: 3.9tons
Oil: 15W40 synthetic
Radiator: 2 year old 3 or 4 row australian stock replacement. Radiator meshing free of dirt. Has a very small leak, only loosing few drops when parked. Radiator cap is 16lbs, 1 year old.
A/C: yes, but not using it now because of this problems! A/C radiator free of dirt.
Front grill: winch and mosquito netting surely not helping air flow! But helps a lot keeping it clean!
Thermostat: 6 month old, new original Toyota.
Antifreeze: Toyota Red, before some green stuff. Flushed it 4x with water (filled and drained it again)
Viscous Clutch: stock, original. No noise when starting up or when hot. Refilled it 2x with Silicone oil. Read below...
IP: 1 year old, no black or white smoke at WOT. Also not at 4000m altitude!
I started having heat problems in Colombia and refilled my blue viscous fan clutch with 50ml of about 8000Cst Silicone oil from an RC shop.
After I rebuild the viscous fan clutch it got better, but about 1 month later in Ecuador the car already cooked 3x when going uphill at very cool air temperatures (10-15celcius). I had to stop and it already smoked out of the overfill bottle.
The car was cooking even when going very slow uphill in 1st gear and the hood open on the front and rear (spacers I installed 3 month ago)! This was never like that 1 year ago in hot Mexico when going up a mountain! Sure, the oil temp increased back then up to 130Celcius, but the water NEVER left the middle spot.
Now I can't even climb a medium hill and the oil still at 110-120 without having the water gauge go to red!
I have the feeling that there was no big difference between cold and hot, the fan pulls about the same air. Maybe little bit more when hot. And the air is ONLY when I hold my hand above the space between fan and engine. When I hold it near the timing belt cover I feel NO air.
Also when I push the throttle I feel only little bit air on my face when standing on the side of the car. Also no air at timing cover height, even when pushing the throttle.
How strong should I really feel the air? I remember on my 1972 Plymouth it was LOTS of air! On this one I feel it's not a lot?!
I removed the viscous clutch again, filled again 15ml MORE of 10'000Cst I have left and I got now about 65ml of about 9'000Cst silicone oil in there.
It got better yeah, but still, I can't say it would blow my hat of my head or feel like a tornado when cold OR hot.. it's about the same!
At least I did climb today some hills (600meters) and oil temp went from 90 to 110, I felt it kept cooler.. water kept in the middle. But 600meters was not very much, last time it was 1500m hill when it started to cook after around 1000m of height difference.
Otherwise the 200km I did today on flatter roads and small hills was ok, oil always around 80-100Celcius on flat areas at 60-80kmh and my 3.9tons.
Oh and I checked again the bimetall thing on the viscous clutch, it MOVES when I heat it with a lighter and opens the holes inside the clutch, so this works!
Can anyone tell me how strong it should pull air?
ALSO, what type of fan clutch do have Australian J7 with A/C? The blue one or the orange or even red one???
And has anyone ever done the temp gauge mod on a 24V J7? I only found information for 12V system, not for 24V J7 like mine is.
I am thinking to drill some holes and push some bolts through that damn clutch and get a new Toyota one, but don't know which color! Orange is for warmer climates and red for very hot climates. Since I have a Turbo AND A/C this would still be better right?
Please help, I worry about an engine failure!
Michel
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