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Old 03-18-2012, 11:44 PM
MCSL MCSL is offline
Officially Welcomed to the 'Fest
Location: Nor Cal
Join Date: Jan 2005
Posts: 2,598
Mein Auto: 330i
2012 IndyCar Engine Architecture

Bank angle V6 engines - between 60 and 90 degrees
Bore 95mm diameter maximum
Engine length 460mm, measured from mounting face to mounting face
Crankshaft height 100mm above bottom of chassis (lowest point of sump)
One-piece crankshaft homogenous with no additional non-ferrous inserts or bolt-on balance weights
Main bearing minimum dimension 48mm diameter
Big end journal minimum dimension 40mm diameter
Connecting rods Homogenous, no welding or bonding
Piston pin single piece only
Valve type Reciprocating circular poppet, return force via coil spring only
Spark plug One per cylinder otherwise free
Coatings DLC coatings are not permitted on crankshafts, rods, camshafts, piston skirts or sleeves
Camshafts Up to four overhead camshafts permitted (2 per bank)

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