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Uploaded by marriedw4 on Sep 20, 2009
This is a 503 Rotax in excellent shape, 138psi# in each cylinder.The biggest Fan cooled 2 stroke engine that Rotax had in production.
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Rotax also has a 582.
Terratracks 5 days ago
not the biggest. rotax had a 775 f/c
yamaharules163 1 month ago
@douglasbeveridge dont forget the 775
Yeah, Many Alpines had 640's.
Doniehg 1 year ago
not the biggest fan cooled...they made a 640 cc fan cooled back some 25-30 years ago....
douglasbeveridge 1 year ago
i owned a ski-doo blizzard 5500 with that engine......extremely reliable and pretty fast for the early 80's. suspension was terrible.
quincee33 2 years ago
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Rotax also has a 582.
Terratracks 5 days ago
not the biggest. rotax had a 775 f/c
yamaharules163 1 month ago
@douglasbeveridge dont forget the 775
yamaharules163 1 month ago
Yeah, Many Alpines had 640's.
Doniehg 1 year ago
not the biggest fan cooled...they made a 640 cc fan cooled back some 25-30 years ago....
douglasbeveridge 1 year ago
i owned a ski-doo blizzard 5500 with that engine......extremely reliable and pretty fast for the early 80's. suspension was terrible.
quincee33 2 years ago