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.

Pre-A+ front pulley bolt as used on early Minis with stamped pulley or 2-piece Cooper S pulley.

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.

This socket head cap screw is made in a very heavy-duty material and comes with a beefy steel washer.

Large locktab for front pulley retaining bolt when used with Cooper S two-piece pulley/damper assembly.

Original steel v-belt crankshaft pulley as fitted to classic Mini Cooper S models with two-piece front pulley assembly

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.

Reproduction one-piece crankshaft vibration damper as used on 1300 engines. Can be used on any A-Series or A+ engine, excluding MPi.

Improved vibration damper/crankshaft pulley machined from steel instead of cast iron (like the originals), has holes for use with a puller, and is marked in degrees for easy ignition timing

This crankshaft woodruff key must fit perfectly and should be replaced if it shows any mushrooming or fits loosely.

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

Forged EN40B crankshaft to fit 1300 or A+ block, but with rod journal size to fit Cooper S rods. 81.3mm stroke, as standard for 1275.

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

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.

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.

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

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.

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

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.

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