David L. Lutz

Is the remote cooler or any other mod. blocking the air flow?

Also, the top Rad. hose shoud be hot and feel full, at least mine does when the engine is hot. Not too long ago I had the same issue and it took a couple of runs of several miles with the heater open to clear the air and fill that top hose.

jpitman2

Gasket inside the water bridge, on an 82? My 83(jan build) does NOT have one, and from what I have read, these started in late 83...
Also,do you have the 'guide tube' in the inlet to the radiator? This has a 1/4 circle cut out , and facing right , concept being to ensure coolant goes down the tank before going sideways through the tubes.
jp 83 Euro S AT 52k

Stephencs601

If you have the old three piece radiator, get rid of that crap and put a one piece aluminum 4 core in. Bet that helps, but may hurt pocket

s928s

The coolant bridge in my 1982 euro m28/11 did have the inner seal, so I replaced it.

The radiator does not have the tube you are refering to. I would assume that is a possibility for a non-auto car. The inner tank rad coolers appeard to disribute the flow.

s928s

The remote oil cooler is in front of the condensor and rad. it is aprox 6x12in. in size. I still get good flow through the core and plenty of hot air from the fans drawing throught. I have seen several of these with the bottom 10 rows clogged and still cool in the normal ranges.

Even though the radiator was just flushed and flow checked, I am most suspicious that it is the culprit.

I did bleed the system again befor heading home from work. The needed did stay in the upper middle range. mainly at the second bar for the whole way home, slightly cooler than this morning. I will recheck it when it cools.

jpitman2

tHE RAD TUBE in the inlet hose is not specific to any transmission AFAIK. its to improve cooling be ensuring the coolant doesnt just go in, and turn left across the top tubes.
If your bridge had the seal, logical to replace. Mine doesnt have one....
jp 83 Euro S AT 52k

Mrmerlin

just a note the 928 coolant system is a self bleeding system just connect the hoses and fill from the bottle with car level.
That said i think you should get a IR gun and check the inlet and outlet temps you gauge could be bad or the sender . If you fitted a 75c thermo then you should be seeing about 180 at the top hose, and about 10 deg cooler on the outletif you could post a picture of the coolant bleed hoses this might help.
Try to rout them so they are on a gradual rise to the bottle.
The no coolant coming out of the top of the bleed hose on the rad is concerning, try removing the fitting and see if its clogged

s928s

post a picture of the coolant bleed hoses this might help.
Try to rout them so they are on a gradual rise to the bottle.
The no coolant coming out of the top of the bleed hose on the rad is concerning, try removing the fitting and see if its clogged

The bleed hose was replaced with a new line. It is routed in the same location that the origonal was. I also changed the fitting on the top of the rad. with a 90 deg. elbow. The braided line would stick up too high onto the radiator mount fold on the bottom of the hood. Yesterday when running I seemed that the radiator was not full. I did remove the hose at the fitting. No coolant came out. If i compressed the rad. hose I did get a small stream of coolant then. There was no restriction there.

Mrmerlin

if you remove the small li9ne off of the top of the rad you should have coolant coming out with the car off and the system cold, since the bottle is higher than the bleed nipple, you could also have a clogged line/hose/ kink

dr bob

^^^^ To get the coolant test flow from the radiator bleed nipple, the reservoir cap will need to be open or there needs to be some pressure on the system. If the reservoir level is a little high, you should also see flow from the hose when you remove it, coming from the reservoir. That nipple in th ereservoir is normally open to vapor space above the seam.

As Stan also recommends, a continuous slope with no pockets for vapor is the ideal hose routing. Unfortunately that doesn't really work if you follow the original routing over the top of the shock tower and back down to the reservoir nipple. It still works fine in that configuration though.