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1275 A+ EN40B Crankshaft Metro Type With 1.75 Rod Bearing Size

1275 A+ EN40B Crankshaft Metro Type With 1.75 Rod Bearing Size

1275 A+ EN40B Crankshaft Metro Type With 1.75 Rod Bearing Size
Selected: 81.33 Stroke for late rods & 1300 block
Part No: C-STR931
$3889.95
Qty:
Specially Priced. Discounts Do Not Apply.
Fits the following:
Classic Mini
Forged EN40B crank, 1.75" 1300 big end journal for 1300 block with stronger keyway fitted for timing gears. Forged EN40B steel nitrided Race cranks are considered the ultimate in specification, even over the "billet" type. This is mainly because the grain pattern of a forging follows the shape of the webs and bearings whereas the billet type is machined across the grain. We stock all the forged type. All have superior oil distribution galleries, and heat treated for maximum durability. All are machined to fit 1275 non-S center main SIZE OF 1.211 except THE C-AEG479 which is for the Cooper "S" Block.

All cranks have been re drawn to benefit from latest technology by having the larger crank webs designed to reduce whip and resistance at high revs giving smoother running and easier balancing, plus being mass center balanced.

Always check gearbox for clearance with these large webs. The bored holes for the big ends reduces weight of the crank and does not require drilling through the large counter balance C shape webs.
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Related Technical Articles:
Classic Mini Cooper Crankshafts & Bearings -page 36
Created: January 03, 2019
Stock or high performance crankshafts for Minis from 1959 thru 2000 are available new or reground. Straight rod or conventional crankshafts are available for the 1275cc engine. Also see our complete selection of crankshaft bearing for all the various engine sizes.
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