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57lincolnman |
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#1
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Member ![]() ![]() Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California ![]() |
Recently completed rebuild of 1.8L and it's running too hot. Oil temps climb to 230 with only about 10 minutes running. It doesn't matter how the engine is loaded. Items to consider: 1) case cleaned and checked for alignment; 2) LN pistons installed at 96mm with new Nickie cylinders; 3) cylinder heads (1.8L) cleaned and set for 8.25:1; 4) new connecting rods; 5) push rods check out OK; 6) car did not previously have thermostat or cooling flaps, so these were installed. Thermostat opens as it should at 180; 7) Air/fuel ratio is 12-14 and within spec; 8) engine timing within spec; 8) mild cam upgrade. 9) crankshaft and flywheel were balanced; 10) all engine tin is in place
Could it be that the engine cooling flaps are not working or reversed? All thoughts and commentary are welcome. This one has us baffled. |
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JStroud |
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#2
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Senior Member ![]() ![]() ![]() Group: Members Posts: 1,463 Joined: 15-January 11 From: Galt, California Member No.: 12,594 Region Association: Northern California ![]() |
You list mild cam upgrade, and list "push rods check out ok"
Did you do the valve train geometry when you built the motor, or just use the stock push rods with the new cam? New lifters? Check bearing clearances? Oil pressure ok? Jeff |
57lincolnman |
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#3
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Member ![]() ![]() Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California ![]() |
You list mild cam upgrade, and list "push rods check out ok" Did you do the valve train geometry when you built the motor, or just use the stock push rods with the new cam? New lifters? Check bearing clearances? Oil pressure ok? Jeff Thanks for your response. We spent an entire day checking out the valve train geometry. We ended up using the stock push rods because everything checked out within spec. I will need to follow-up on the bearing clearances. That is a good point. Oil pressure is NOT OK. At 65-70 mph I'm getting 10-12 psi. Not good. Oil pressure comes on at idle when the engine is warmed up. |
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