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harley572 02-10-2009 06:06 PM
850 merc
 
is merc 850 prop shaft hp or flywheel hp

byrideroffshore 02-10-2009 07:31 PM
Just alittle curious myself.. is it 850....i suspect flywheel

Young Performance 02-10-2009 08:13 PM
As far as I know, all of Mercs engines are rated at the prop.

Eddie

tblrklakemo 02-11-2009 08:39 AM
Originally Posted by Young Performance (Post 2797528)
As far as I know, all of Mercs engines are rated at the prop.

Eddie
From the prop of what drive?

glassdave 02-11-2009 01:56 PM
850 only comes with a dry six i believe

tblrklakemo 02-11-2009 08:21 PM
Originally Posted by glassdave (Post 2798088)
850 only comes with a dry six i believe
Yeah but people put them infront of shaft or anersons too....but i guess merc would be justified in using all their own stuff.

el indio 02-11-2009 08:29 PM
1 Attachment(s)
Originally Posted by harley572 (Post 2797383)
is merc 850 prop shaft hp or flywheel hp
800sc. = 700 hspr at prop shaft. 800 is ft lbs of torque. 750 hspr at flywheel or crank. cya.:cool-smiley-027::cool-smiley-027:

GLH 02-11-2009 08:39 PM
Originally Posted by Young Performance (Post 2797528)
As far as I know, all of Mercs engines are rated at the prop.

Eddie
Yup
Originally Posted by glassdave (Post 2798088)
850 only comes with a dry six i believe
Yup x2

pwam1 02-13-2009 04:00 PM
I read somewhere that anything made by Mercruiser that isn't black is flywheel hp.
Don't know if it's true or not.

DMOORE 02-13-2009 06:35 PM
Originally Posted by pwam1 (Post 2799699)
I read somewhere that anything made by Mercruiser that isn't black is flywheel hp.
Don't know if it's true or not.




I heard the opposite. Black is flywheel, blue is prop.


Darrell.

tblrklakemo 02-13-2009 08:01 PM
Originally Posted by DMOORE (Post 2799812)
I heard the opposite. Black is flywheel, blue is prop.


Darrell.
Black is most certainly crank hp.

We know 525's are more like 540ish at the crank and 500 at the prop.

shawn 02-14-2009 01:32 PM
Then why is my HP500 470 HP at the prop?

tblrklakemo 02-14-2009 01:48 PM
Originally Posted by shawn (Post 2800202)
Then why is my HP500 470 HP at the prop?
bc its more like 515-520 at the crank

Griff 02-14-2009 01:52 PM
How Merc rates HP, whether its at the prop or crank has changed several times and varies depending on year and engine.


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