F#150 - Solved - PBA II - DKW Formula Junior

[faksta]

Name this car for one point.

[faksta]

Experts' turn.

[Tackitt]

1961 PBA II - Auto Union / DKW Formula Junior

•One-off built by Paul Bolle of Aachen, Germany using DKW, Auto Union, Porsche & custom made componentry. 
•Rear-engined with an 850cc- 3cylinder 2 stroke Auto Union /DKW mated to a 4 speed gearbox. 
•Driven by Gunther Wels, it was raced in affiliation with Scuderia Colonia, linking it to the earliest years of Wolfgang von Tripps' fabled racing team.
•The car raced in period into the mid-1960s at Nurburgring & other German venues. 
•It made a return to the track in the late 1990s with the Vintage Sports Car Club of America. The car has recently been fully restored (early 2000s) and has seen little track time since.
•Included is a spare 1000cc Auto Union DKW engine in need of a rebuild.
•The car is currently located 30 miles west of Philadelphia, PA

[faksta]

Right.

[D-type]

Why would anyone build a Junior with an 850cc DKW engine when a 1000cc DKW engine existed?  The regulations allowed 1100cc or 1000cc cars with a reduced minimum weight but no further concessions for smaller engines.