Part
Number 10-8901 10-8902 10-8903
K&B 3.5 Crankcase
Used on all
K&B 3.5 engines
Check your crankcase
before ordering
Here are the differences
The early 3.5
which used a small sleeve with an outside diameter of .750" This
means the hole in the crankcase where the sleeve slides in is 3/4"
diameter.
We do not have replacement crankcases for .750 diameter sleeves.
Later crankcases used a .765 diameter sleeve. This is .015" larger.
This the the only case we sell.
10-8901 Used
on all outboards and front intake engines.
Including early inboards and ducted fans.
10-8902 Used
on ducted fan with drum valve intake.
Intake cutout is on the exhaust side.
Intake cutout is opposite the exhaust side.
Items usually purchased with this
29-8901
Gasket set
29-8911
Head Shim Set
Changes over the years
Sleeve bore changed from .750"Ø to .765"Ø
Added web to mounting lug.
Boss added behind
screw holes
on exhaust flange.
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Model Engine Corporation of America, All rights reserved.
MECOA and
K&B are Registered Trademarks of Model Engine Corp. of America
Registered U.S. Patent Office
No
part may be reproduced without written permission from
MECOA -- 16015 Adelante St., Irwindale, CA U.S.A.