Reviving this older thread on
Initial fire-up and break in' is reasonable considering how many
trouble in paradise posts after fire ups'.
I completed the assembly of the turbo project 250 and instead of working in a car, decided to fire-up and run-in' on a stationary engine stand. The engine is a stock 250 block (@ 35K miles) with the Head re worked with V8 springs, back cut valves etc, but no milling to retain 62cc chambers for a SCR around 7.81 with a modern composite head gasket. Cam is still OEM with Lunati lifters and adj. ' rockers. Liberal assembly lube, cam guard and oil pump priming before adding HEI ignition and cooling accessories to fire it up.
1st attempt: Started on less than a full revolution with OEM 'Maverick YFA and ran fairly well through a suitable cam/lifter part throttle sequence.
BUT , coolant leaked from defective heat sensor, VC leaked a bit and the carb stumbled and missed on throttle.
2Nd attempt : A known good YF from a maverick 170 adapted to the 250 ran excellent and made me confident carb was problem but is too small for the 250. Adapted a good running 2300 350 CFM and found the accel pump leaking onto manifold (Gasahol?). Next the planned Turbo prepped QuadraJet from the Buick Turbo V6 once it's cleaned and rebuilt ...
The run stand has a spare radiator from my '50, a Mercedes elec fan,the motor has FW clutch and toploader 3.03 to complete the setup.
have fun
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