Technical
info on KR and XLR:
1955 Set Up Sheet, as included in Double
Valve Spring Kit # 18235-55R
1957
specifications and instruction manual, KR, KRTT, KHRTT:
page 1,
page 2, page 3, page 4, page 5, page 6, page 7, page 8, page 9, page 10
XLR
Engine Specifications 1 2