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AMERICAN
& AUSTRIAN MADE HP ENGINE PARTS DEPARTMENT
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Please
check your engine carefully. NO HP PARTS FIT WEBRA
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Don't
confuse HB and HP engines... HB engines were produced in
Germany by Helmut Bernhardt Feinmechanik and had PDP, Blitz
and Stamo models. HP (Hirtenberger Patronen) engines were
produced in Austria and now in U.S.A. They have Gold Cup, Silver
Star and VT models. These two engines are completely different
and no parts interchange. |
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| Early
HP Gold Cup and late Silver Star .61... Early Gold Cups have
a smaller rear bearing, crankshaft and front housing with bearing
I.D. measuring 15mm - .590"Ø. Use rear bearing, crankshaft
and front housing for silver star if you have this older version.
Late Silver Star .61 engines used larger 17mm - .670"Ø.
rear bearing. If you have this version use Gold Cup parts. |
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| Rotomix
carburetor... Early Gold Cup and Silver Star 61's used a barrel
type carburetor similar in design to a Perry. Later versions
use a slide carb. Parts listed are for the slide carb. Call
if you need Rotomix parts not listed. The complete carb (80-0101)
listed is the K.61 carb which fits the HP 61 perfectly and is
sold as original equipment on the new Silver Star .61's. |
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| Dykes
and conventional rings... A dykes type ring is "L" shaped and
is located at the very top edge of the piston. A conventional
ring is flat or square shaped and is located about 1/16" below
the top edge of the piston. Click
here for more details on rings |
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