Crankshafts & Pulleys

This steel 4-bolt center main cap is the best way to counteract the flexing of the classic Mini's 3-main bearing crank, and is considered a must for race application. Fits all 1300 A+ or Austin America blocks.

Billet EN40B steel crankshaft made in the UK, to fit an original 1071 Cooper S Block.

Front pulley bolt as used on A-series or A+ classic Mini engines. Ref: AEA312, AEA0312, TAM2019.

Center main bearing cap kit for A-Series or A+ 1300 blocks (not for Cooper S). Strengthens the center mail bearing cap.

Center main bearing cap kit for 998 and 1098 blocks. Strengthens the center main bearing cap; requires machining the cap flat before installation.

Engine management crank position sensor mounting kit; includes bracket, hardware, and pick-up.

Socket head cap screw made in a very heavy-duty material and comes with a beefy steel washer. Ref: C-AHT147.

Large locktab for front pulley retaining bolt when used with Cooper S two-piece pulley/damper assembly. Ref: C-AHT146, 12A367, AEG454.

Original steel v-belt crankshaft pulley as fitted to classic Mini Cooper S models with two-piece front pulley assembly. Ref: AEG454, C-AEG454.

Competition-quality crankshaft damper, made in the USA by BHJ. As used by race teams in the U.S. and Europe; conventional in design, but contains BHJ's proprietary damping material inside

The 2-piece Cooper S front pulley assembly used this steel/rubber outer ring to reduce vibration.

Dynamic crankshaft damper ring to fit Cooper S pulley; machined from lightweight aluminum alloy and high-grade steel.

One-piece crankshaft vibration damper as used on 1300 engines. Can be used on any A-series or A+ engine, excluding MPi. Ref: AHU1878, CAM4929, 88G305.

Improved vibration damper/crankshaft pulley machined from steel instead of cast iron (like the originals).

This crankshaft woodruff key must fit perfectly and should be replaced if it shows any mushrooming or fits loosely. Ref: 6K836, 6K0836.

New forged A+ 1275 crankshaft; bolts directly into classic Mini 1300, Austin America, Mini A+ or Metro engine block. Ref: CAM6232, BHM1437.

Forged EN40B crankshaft to fit 1300 or A+ block, but with rod journal size to fit Cooper S rods. Ref: C-STR932.

Special round dowel that fits in the main bearing caps to locate correctly and ensure bolt goes through a casing where the surfaces meet

KAD-made improved flywheel bolt for high-performance applications. For pre-Verto installations.

Metal lock tab for use with crank pulley bolt when one-piece pulley is fitted. Bend the side over to lock into the recess of the pulley. Ref: 12A398, 12A0398.

For restoration purist. Six (6) of these required for all 850/998/1100 big end main caps but not always fitted to A-plus engines in the end.

Set of six (6) high-strength bolts made by ARP are direct replacements for the stock 1275 main cap bolts.

High-strength main cap bolt for A-series or A+ 1300 engine, made by ARP.

Main cap bolt for 1098cc engines. The bolts for the main caps should be checked and/or replaced whenever they are removed. 7/16" UNF, 2.5"long

High-strength main cap bolt for all ''small bore'' BMC A-Series engines, including 850, 948, 997, 998 and 1098 engines.

Aerospace quality ARP main cap bolt, extra length, for use with center main cap reinforcing strap. For 1300 and A+ blocks. Sold each.

ARP heavy-duty main cap stud nut. Flanged 12-point design for maximum clamping force. Ref: N71620, 300-8333.

This set of main cap studs and nuts is for both pre-A+ and A+ series 1300 block, which have no removable tappet covers. These studs are stronger than the original bolts by a large factor,

Set of six (6) studs for the main bearing cap on classic Mini Cooper S blocks. Ref: AEG323.

The only means of aligning the timing gears is by using these small shims behind the crank gear. .006'' thick; sold each

Machined set of steel main caps, featuring a 4-bolt center main. A must for high-revving race engines!

New lightweight Cooper S-type crankshaft inner pulley, machined from a higher material specification than the standard pulley.

Lightweight Cooper S-type crankshaft inner pulley, machined from a higher grade steel than the standard pulley. Has 36 teeth, making it ideal for use with an engine management system.

Set of eight (8) high-strength studs and 12-point nuts to fit the FOR166 main cap set.

Heavy-duty washer to use under the front pulley bolt, to reduce the tendency of that bolt to work loose.