07-14-2009, 04:29 PM
Quote:FYI, the difference between the 8-15hp motors is usually just the carburetor size and/or a couple other minor differences.
This statement totally surprised me. So I thought I would confirm.
While your statement holds true for the 8 & the 9.8, it doesn’t for the 15. The displacement and bore & stroke is a fair amount bigger in the 15. Like 2/3 again bigger (displacement).
BTW, I agree with the guys here who say go 4 stroke. Especially if it's a dedicated trolling motor.
Make Nissan
Model / NSF15 Engine (No. of Cylinder) 2
Engine Type 4 stroke
Output 15 hp
Displacement 351 cc (21.41 cu.in)
Bore x Stroke 61 x 60 mm (2.4 x 2.36 in)
Make Nissan
Model / NSF9.8[font "Times New Roman"] [/font]Engine (No. of Cylinder)[font "Times New Roman"] [/font]2[font "Times New Roman"] [/font]
Engine Type 4 stroke
Output 9.8 hp
Displacement[font "Times New Roman"] [/font]209 cc (12.8 cu.in)[font "Times New Roman"] [/font]
Bore x Stroke[font "Times New Roman"] [/font]55 x 44 mm (2.17 x 1.73 in)
Make Nissan
Model / NSF8[font "Times New Roman"] [/font]Engine (No. of Cylinder)[font "Times New Roman"] [/font]2[font "Times New Roman"] [/font]
Engine Type 4 stroke
Output 8 hp
Displacement[font "Times New Roman"] [/font]209 cc (12.8 cu.in)[font "Times New Roman"] [/font]
Bore x Stroke[font "Times New Roman"] [/font]55 x 44 mm (2.17 x 1.73 in)
[font "Times New Roman"] [/font]
Here’s Merc’s
[font "Times New Roman"][size 5]15 FourStroke Specifications[/size][/font]
[font "Times New Roman"]Output HP @ Prop 15 [/font]
[font "Times New Roman"]Cylinders 2 (in-line) [/font]
[font "Times New Roman"]Displacement 351 cc [/font]
[font "Times New Roman"]Bore & Stroke (in) 2.40 x 2.36 (mm) 60 x 61[/font]
[font "Times New Roman"][size 5]9.9 FourStroke Specifications[/size][/font]
[font "Times New Roman"]Output HP @ Prop 9.9[/font]
[font "Times New Roman"]Cylinders 2 (in-line) [/font]
[font "Times New Roman"]Displacement 209 cc [/font]
[font "Times New Roman"]Bore & Stroke (in) 2.16 x 1.73 (mm) 55 x 44[/font]
[size 5][font "Times New Roman"] [/font][/size]
[font "Times New Roman"][size 5]8 FourStroke Specifications[/size][/font]
[font "Times New Roman"]Output HP @ Prop 8[/font]
[font "Times New Roman"]Cylinders 2 (in-line) [/font]
[font "Times New Roman"]Displacement 209 cc [/font]
[font "Times New Roman"]Bore & Stroke (in) 2.16 x 1.73 (mm) 55 x 44[/font]
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