03-18-2012, 11:44 PM
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Officially Welcomed to the 'Fest
Location: Nor Cal
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Join Date: Jan 2005
Posts: 2,055
Mein Auto: 330i
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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)
http://auto-racing.speedtv.com/artic...chnical-shots/
http://www.indycar.com/news/show/55-...-engine-rules/
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