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by 944_Jim Wed Mar 27, 2024 10:14 pm
crankcase question
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crankcase question
I have two crankcases to choose from for my blackwidow repair project. One was a car engine with the larger crank and spline. It has been fitted with a bored oversize brass drive hub. The other is a standard model with an aluminium hex drive hub. The car engine feels like it has slightly more play in the crank fit. Anyway which case would you use and why? Do the car cases have any issues?
I tested both engines with a unknown red backplate with the wire E clip retainer and a floppy drive reed, 5 1/2x3 prop, 20% fuel, Tee Dee head with 2 shims. The car engine made 15000 rpm and the other went 15500. The cylinder could have made some difference. Once I make my choice on the engine its back to carb repair on the busted plastic backplate.
Phil
I tested both engines with a unknown red backplate with the wire E clip retainer and a floppy drive reed, 5 1/2x3 prop, 20% fuel, Tee Dee head with 2 shims. The car engine made 15000 rpm and the other went 15500. The cylinder could have made some difference. Once I make my choice on the engine its back to carb repair on the busted plastic backplate.
Phil
chevyiron420- Gold Member
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Join date : 2015-01-28
Age : 66
Location : Barney Georgia
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