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Original Message
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| extreme heat |
| By Mike - 04/20/2002 12:12:15 PM; IP 198.81.17.51 |
| Heat, Heat, Heat...OK guys. Maybe you can help me. 10 years ago I had my 428 SCJ rebuilt. It was bored from standard to .30 over. Since the rebuild, it has ran hot and has progressively gotten hotter as time went on. I have done all the standard heat solving problems solutions as you guys would have. Starting with the easiest to the most extreme now. They are: ALL NEW STUFF: Flow Cooler water pump, huge custom made Griffin radiator, new hoses, new carburator adjusted and running normal, heads checked and reworked valve job, all new exhaust system, electric fan, 7 blade manual fan too, new splitfire plugs, new thermostat, 160 thermostat, and NO thermostat. Accell Distributor checked, recurved, and shows great on scope, set at 10-12 degrees at 26-34 dwell, burning 76 high octane gas, brakes not dragging, C-6 transmission good with its' serperate cooler, drag pack oiler cooler functioning, ran straight water, 50/50, and pure antifreeze, different oils...10-40..20-50 and synthetics and standards, prolong additive, wetter water additive. All these things have not helped the heating problem.. Thermometer in the radiator shows in excess of 230 degrees and climbing. Radiators perculates after shut off. All new top end gaskets and all water jackets clear.Some have suggested that the motor may have factory "CORE SHIFT" which when bored to .30 the walls between the cylinders and the wter jackets are too thin. The motor was oulled out and sonic checked. The cylinder walls sonic check at .60,000 to 90,000 at some cylinders. Machine shop says this is too thin.. Is this right? Does this make sense? Have I missed anything? Please advise. |
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