the same, have the same stroke and displacement?

On Mon, 16 May 2005 21:13:41 -0400, "KeithR"
wrote:

the same, have the same stroke and displacement?

Could be any number of things, but probably has to do with the
carburetors and/or ignition.

Later,

Tom..

A lot of different hp engines use the same block and displacement.
Differences are in the porting, carbs, exhaust, ignition.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

-
"KeithR" wrote in message
...
the same, have the same stroke and displacement?

Keith,

There is a reason for all this.

Many outboard platforms come in 2 or even 3 different HP ratings.

I think it is mostly to do with the compression ratio, carburetor size, port
size and port timing (with 2 strokes).

This way they can have a 9.9hp and a 15 hp to fit different boat max HP
ratings with having to make so many different platforms.

If you read the weight and displacement there are tons of outboard
motors/platforms that are at least 2 different HP ratings.

Nissan/Tahotsu has a 4, 5 and 6 hp outboard that is all the same motor. Same
weight and same displacement.

This save a lot of money.

Bill Kiene

Kiene's Fly Shop
Sacramento, CA, USA

Web site: www.kiene.com


"KeithR" wrote in message
...
the same, have the same stroke and displacement?

On Mon, 16 May 2005 21:13:41 -0400, "KeithR"
wrote:

the same, have the same stroke and displacement?

Different spark plugs.



Me and the wife
http://pg.photos.yahoo.com/ph/harkra...bum?.dir=/1323

"KeithR" wrote in message
...
the same, have the same stroke and displacement?

Carburetion, timing, cam profiles, and/or compression differences.

--
-Netsock

"It's just about going fast...that's all..."
http://home.columbus.rr.com/ckg/