BY ENGINE/4age/oilcooler

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Fitting factory AE82/AE92 thermostatic bypass (low flow) oil cooler

Parts/special tools required

  • AE82/AE92, 4AGE/4AFE oil cooler
  • " ", sandwich plate bolted on the block
  • AE82/AE92 4AGE/4AFE sump with oil return
  • approx 3m of oil cooler hose 3/8 size
  • 4 good quality hose clamps to suit
  • if the old one is shagged, a new sandwich plate o-ring (toyota genuine about $7 RRP) not much to cross reference with, so i just used a genuine one..
  • 1 1/16 socket
  • carby cleaner or similar (thinners/brake cleaner/white spirits)
  • pack of various copper washers

so basically raid the same car at the wreckers


Step 1:First step is to take your old filter off..

Step 2:Then use the 1 1/16 socket to undo the thread fitting in the center..

Step 3:Clean up the oil that is there with a rag.. clean the surface of the block with some carby cleaner etc.. spray it on the rag and wipe it, not inside the engine.. (silly i know, but i saw someone do it!) ..

Step 4:Clean surface of plate.. put new o-ring in.. use the longer thread fitting and washer you got off the other motor, and fit.. use locater pin on some 4AGE blocks.. if not just some washers and a bolt will do..

Step 5:Tighten up nice and firm not overkill..

Step 6:Best to put the hose onto the fittings before putting them on the engine..

Step 7:Clean the end of the hose your putting on, and the fitting with carby cleaner.. i used a bit of cheap acrylic spray paint i had lying around as a lube.. (don't use oil or it may weak) the paint then dries and makes a nice seal.

Step 8:Both fittings like this on the engine.. then fit to the engine.. with the new copper washers either side of the banjo exactly like you took them off..

Step 9:The oil cooler I'm using is off an AE82 twincam.. i bent the bracket it had across the bottom from being level with the front, to 90deg angle.. the 2 bolt holes in the bracket lines up perfectly with the 2 traced nuts in the radiator support panel.. so it just bolted in place and stays put nicely

Step 10:Run the hose to correct length and fit to oil cooler in the same fashin as before..

Step 11:Hose clamp it up... use some thinners on a clean rag to go over the hose (if you used something like speedflow hose, or aeroquip etc..)

Step 12:Run car and check for leaks..

Note that this setup just diverts some of the oil headed to the filter to the oil cooler and back to the sump once the oil reaches operating temp. This works perfectly well. However this means that the lines and cooler from an AE82/AE92 are not big enough to cope with a full flow setup where all oil is pumped through the filter and cooler before heading to the engine.

Thanks to Mattyshop from AEDC for the write up. Added by hachirusto

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