1989 troopcarrier overheating

Submitted: Monday, Dec 16, 2002 at 01:00
ThreadID: 2613 Views:2774 Replies:8 FollowUps:14
This Thread has been Archived
Engine is a turbo 2h running 8psi boost. Port temps ares getting up to
330c on dyno. Radiator is new, thermostat is new and I have locked the fan hub.
Radiator hoses don't suck flat and the coolant is good. There is no restriction in front of the radiator and it is not overfueling.
On the highway it runs around 185 to 190c at100k with outside air temp in the mid thirtys, but when climbing steep grades it gets up to 210c and thats not putting the boot in it.
Motor has been recond and injectors done and checked.Timing is standard toyota and the advance is within Toyota spec.
The motor even before recon and turbo tended to run hot .
Hope someone can help as I am stumped.
Back Expand Un-Read 0 Moderator

Reply By: Tony - Monday, Dec 16, 2002 at 01:00

Monday, Dec 16, 2002 at 01:00
One problem with the 75 is the narrow front, does'nt get a lot of air through, and the hot air gets trapped in the engine bay.

One fix can be spaceing the back of the bonnet up to allow the hot air to escape (a couple of washers between the bracket and bonnet).

A more elaborate way is to put vents in the side below the bonnet.
AnswerID: 9742

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Thanks Tony, Will try taking it for a run without the bonnet on. As you said there is alot of heat generated under there and I also have a second battery. Grant
0
FollowupID: 5103

Reply By: CHRIS - Monday, Dec 16, 2002 at 01:00

Monday, Dec 16, 2002 at 01:00
I have a 60 series 2H diesel fitted with a AIT water cooled turbo.( garrett TO3 ). It will sit on a 1/4 to 1/2 at 100 K's but go to 110 K's and the temp will rise to 1/2 to 3/4 on a hot day. Go up the Toowoomba Range and the temp will rise to just under the red. I have driven on the hottest days when cars have boiled and the bitumin has melted with the gauge just under the red and never boiled nor lost water. The vehicle always starts when cold first time (even when left idle for a month) and goes like a rocket when hot. The high temp has been a worry but after having the head done, radiator, hoses and thermostat nothing changed,so I have accepted it. I also have a oil cooler fitted. I believe this is a common problem with the 2H.
AnswerID: 9744

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Thanks Chris, The problem you have sounds almost identical to mine.The the vehicle does not boil, but I don't know how.
Grant
0
FollowupID: 5104

Follow Up By: Chris - Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
I dont know where you live,but when I had my heat problems I contacted a Turbo bloke in Brisbane named Mike Vine Turbos, he said there are a few mods you can do to the engine cooling system but would not tell me what they were,unless he did them. As I said before this is a common problem and I know of one bloke with a 60 series that could not pull up the Toowoomba Range with his camper on without switching his air con off. He ultimately fitted a Davies electric fan as a back up and solved the problem. The only trouble is that because of the oil cooler I cannot do this. I have spoken to a friend who owns a 4 WD business and its a normal thing,more boost = more power = more heat. Some engines Turbo OK without too many problems, but the 2H is one that can be a bit contankerous. Have you got at least a 2 1/2 inch exhaust system and is it a water cooled turbo.(although I personally think the water cooled Turbos create more stress on the radiator).
0
FollowupID: 5108

Follow Up By: Chris - Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
I forgot to say that if you look at the temp gauge on a 60 series anywhere up to the red section is ok, so even if its just below the red its naturally getting pretty hot but still not enough to overheat the engine and boil. The best way to judge is that if its not forcing the water out of the overflow bottle, its not overheating. The water level in the bottle should rise a couple of inches when running and rise a little more when getting hot.
0
FollowupID: 5109

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Chris, I run a 2.5 inch turbo system and a Murphy gauge which is accurate. If all else fails I will try an electric fan.
The other mods Mike Vine is talkig about might be shifting the outlet on the bottom of the radiator to the other side. Have heard of this before.
And yes the turbo is water cooled.
I live west of Mackay still on the coastal fringe and have a couple of good ranges I can test it on.
I appeciate all the responses
Thanks Grant
0
FollowupID: 5137

Follow Up By: Chris - Wednesday, Dec 18, 2002 at 01:00

Wednesday, Dec 18, 2002 at 01:00
You live in a nice area Grant. I spent some of my childhood at Carmila West on a banana farm and went through the 1955 cyclone.We used to go to Mackay every six months for supplies, big day out. The road to to Mackay was a dirt track and if it rained coming home you would have to stay the night at Koumala and wait for the creeks to go down. My cousin owns Westhill Engineering at Slades Point in Mackay, his name is Wayne Brown, if ever your going past call in and give him my regards as I have not seen him for years. I now live on the Gold Coast and hate it, but cant get the wife to move further north. Cheers
0
FollowupID: 5146

Follow Up By: Grant- Thursday, Dec 19, 2002 at 01:00

Thursday, Dec 19, 2002 at 01:00
Not a bad area to live Chris, rain is non existant at the moment and we are having to buy water, guess it has to rain sometime.
I know where Westhill are and if I am passing Iwill say hello for you.
Have a good Xmas Grant
0
FollowupID: 5209

Reply By: Truckster - Monday, Dec 16, 2002 at 01:00

Monday, Dec 16, 2002 at 01:00
Grant, Im going thru the EXACT thing with my GQ..

Ive replaced everything but clutch fan and water pump, but the temp guage on hills heads for the sky! 3 diff rad caps, hoses, coolant, temp guage sender, new 3 core rad,

What pi$$es me off is that this all started one weekend up jamieson.. thing never got over 1/4 before that weekend.. Now lives at 1/2 normally, and goes to Hell...

ive now bought a new VDO temp guage to see if it is correct...

let me know how you go!
AnswerID: 9767

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Thanks Truckster, a mate of mine supercharged his GQ because others he knows have the same problem as you when carrying loads or climbing hills.His doesn't get to hot, although I guess you are not inclined to install a supergharger.
Thanks Grant
0
FollowupID: 5105

Reply By: johnsy - Monday, Dec 16, 2002 at 01:00

Monday, Dec 16, 2002 at 01:00
guys when driving earth moving and road trains if the motor is pulling near the bottom of the torqe curve for too long temperatures rise the answer was to go back a gear speeding up the turbo allowing it to run cooler maybe try that it would seem your covered the rest !
AnswerID: 9811

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Johnsy thanks for the reply, I run the vehicle at about 2000 revs up steep inclines which is about max torque, I just don't over fuel it with the foot to the floor.
Grant
0
FollowupID: 5106

Reply By: John - Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
All this rings 2 alarm bells with me.....
Restrictive Exhaust system
Incorrect temp Gauge

That is asuming of course that everything else is ok ie Radiator, Fan clutch etc, etc..

Can I also add that the Aircon Radiator can get blocked with small seeds and bits of bugs etc...and reduce the cooling to the main radiator.
You cannot even see them half the time, but they will cause overheating problems.
The only and I mean only way to get them out is to remove the engine cooling radiator and pressure clean the air con one from the rear, blasting the water out the front.
I have to do mine every year or so, or I get the above mentioned problems.

Cheers John
AnswerID: 9846

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Thanks John, Exhaust is full turbo system and gauge is correct.
Will try the clean of the condensor, as you said I might not be able to see the restriction
Grant
0
FollowupID: 5136

Reply By: John - Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
No worries Grant,
I couldn't see much in my 97RV either, But I was amazed by how much came out after a good blast out.........
I do it once a year now, and have had no further problems.

Cheers
John
AnswerID: 9866

Follow Up By: Grant- Tuesday, Dec 17, 2002 at 01:00

Tuesday, Dec 17, 2002 at 01:00
Will try it out John. Will all let you know the outcome.
Grant
0
FollowupID: 5140

Follow Up By: Grant- Saturday, Dec 21, 2002 at 01:00

Saturday, Dec 21, 2002 at 01:00
No good John, blasted the condensor but the temp remained the same.
Have a good Xmas
0
FollowupID: 5252

Reply By: royce - Wednesday, Dec 18, 2002 at 01:00

Wednesday, Dec 18, 2002 at 01:00
I share the problem..... and have decided to put up with just under red situation too. Royce
AnswerID: 9934

Follow Up By: Grant- Thursday, Dec 19, 2002 at 01:00

Thursday, Dec 19, 2002 at 01:00
Royce, have just got back from work and haven,t done much after 14 nightshifts. Took the vehicle for a run with no thermostat and fan locked.
Same result once it heats up. Tomorrow I will clean the condensor as suggested by John then if that doesn,t work I will pull the bonnet off and try that. Grant
0
FollowupID: 5208

Reply By: Grant- Saturday, Dec 21, 2002 at 01:00

Saturday, Dec 21, 2002 at 01:00
Royce took her for a run up the range with the bonnet off and the temp gauge dropped about 8 degrees c. Still running over 195c but at least its a start, guess I might try a reverse bonnet scoop.
Have a good Xmas
AnswerID: 10049

Follow Up By: Truckster - Sunday, Dec 22, 2002 at 01:00

Sunday, Dec 22, 2002 at 01:00
GU Bonnet Scoops are $90 from www.offroad.au.com
mail steve there and say I sent yer....

Im gettin one in new yr too for my Intercooler...
Takecare
0
FollowupID: 5285

Sponsored Links

Popular Products (13)