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1987 Mazda B2600 overheating

Tiny
2CP-ARCHIVES
  • MEMBER
  • 1987 MAZDA 121
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
1987 Mazda B2600 2.6L mileage: 150,000. I just completely overhauled the engine had it bored out to ten thousandths of and inch, put a remanufactured head on it, new pistons, cut the crank with new rods and mains. When I reassembled everything, I was extremely careful to torque every bolt to the specs that I have in my repair manual. After I got everything together and ran the engine, I found that the engine was overheating with or without the thermostat installed. I have good flow through the radiator and no leakage past the rings or through the head gasket. It is not leaking antifreeze anywhere. Please help.
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Tuesday, November 30th, 2010 AT 12:40 AM

1 Reply

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
Here are some things to check. Is the ignition timing adjusted properly? Is there exhaust gases in the cooling system? That can be easily checked by a radiator repair center with a sample of coolant with engine running. Is the fan clutch engaging when the engine is hot?
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Tuesday, November 30th, 2010 AT 1:34 AM

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