Reply
 
Thread Tools Search this Thread
 
Old 02 January 2014, 06:24   #11
Member
 
Country: Finland
Town: Helsinki
Boat name: SR 5.4
Make: Avon
Length: 4m +
Engine: Toh1 3,5 Yam 90/2S
Join Date: Oct 2009
Posts: 896
Here one web site that covers the consumtion of various mercruiser models, indicative but gives some ballpark figure.
MerCruiser 3.0 Fuel Consumption 135 HP | MPG GPH US Gallons per Hour | 3.0 L 181 mpi/tks.

It would be fun to put a 3.0 L on a SR, the stability would be very good but the weight is maybe litle on the high side?

IMHO the yam 90 is a suprisingly fuel efficient OB for a 2 stroke, and at WOT(33 L/H +- ) there is not much difference even to modern engines.

We use a fuel flow meter on the SR 5.4, and contradictonary what other reports, the speed seams not to affect the economy very much. Sweet spot is 28 knots +-(wheater permitting) and then we do aprox 0,8 l/nm(long distance average, moderate sea satate, fuel and a few kids as cargo). r

At WOT it does aprox 0,85 L/NM and about the same at 22 knots. If less than 22 knots the consumption /nm increases. For sure at cruising speed a 4s or DI 2s would use less.
__________________

__________________
fun on a boat is inversely proportional to size...sort of anyway
C-NUMB is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 13:38.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.