Main Menu
Advertisement
Affiliates
Advertisement
Newest Members
Hooter Magruder, modset, Sjenno15, KI Bassin, pjeffrey
104443 Registered Users
Top Posters
TexDawg 84494
hopalong 76587
Pilothawk 74348
JDavis7873® 67382
John175 ® 62508
FattyMcButterpants 60659
Tritonman 57363
Derek 57336
SkeeterRonnie 52787
LoneStarSon® 52658
facebook
Forum Stats
104443 Members
60 Forums
837034 Topics
11949814 Posts

Max Online: 36273 @ 01/23/13 02:34 PM
Topic Options
#11895811 - 10/23/16 04:44 PM 90 hp mariner question
YAKaddict Offline
Pro Angler

Registered: 11/02/14
Posts: 506
Loc: Plano
My mariner runs pretty decent but i need opinions. At wot i get about 6500 rpms top and the boat tops out at 45 mphs , does that sound right and will a 150 add on a good amount of speed?

Top
#11896166 - 10/23/16 08:30 PM Re: 90 hp mariner question [Re: YAKaddict]
dustinmoorman Offline
Outdoorsman

Registered: 07/18/16
Posts: 129
Loc: Rockwall, Tx
Woah, 45mph at 6500 rpm sounds a bit slow, this is trimmed up all the way on a plane? What pitch prop? I have a Mariner 150 that is overpropped and I'm getting 65mph on a plane trimmed up all the way at 5100rpm.

But that being said, what you're getting might be right for a 90.... but 45 mph still seems a bit low.
_________________________

Top
#11896170 - 10/23/16 08:33 PM Re: 90 hp mariner question [Re: YAKaddict]
ssmith Online   content
Extreme Angler

Registered: 11/22/07
Posts: 2634
Loc: scotland tx
I would bet your tach is wrong because you wont be together long at that rpm.

Top
#11896179 - 10/23/16 08:39 PM Re: 90 hp mariner question [Re: YAKaddict]
dustinmoorman Offline
Outdoorsman

Registered: 07/18/16
Posts: 129
Loc: Rockwall, Tx
6500 rpm is very alarming... I know mine should max at 5600rpm. There is a chart around here somewhere with max rpm per engine.... I might be able to turn it up
_________________________

Top
#11896196 - 10/23/16 08:45 PM Re: 90 hp mariner question [Re: YAKaddict]
dustinmoorman Offline
Outdoorsman

Registered: 07/18/16
Posts: 129
Loc: Rockwall, Tx
here you go:

http://www.go2marine.com/productcenters/propellers/engine_rpm.shtml

there are some 90's on that chart for Mercury, see if you can nail down which one you've got.
_________________________

Top
#11896502 - 10/24/16 06:43 AM Re: 90 hp mariner question [Re: YAKaddict]
Pat Goff Offline
TFF Celebrity

Registered: 01/29/05
Posts: 5068
Loc: Marble Falls/Seadrift
5,500 is all that motor needs to turn. Check your tach settings. When you look up stuff it's the same as a Mercury 90ELPTO.
_________________________
Pat Goff
Marble Falls/Seadrift TX

Top
#11896565 - 10/24/16 07:39 AM Re: 90 hp mariner question [Re: YAKaddict]
YAKaddict Offline
Pro Angler

Registered: 11/02/14
Posts: 506
Loc: Plano
eekswow , i thought it was running pretty good but it sounds like its time to take it to the shop and get it checked out! That is trimmed all the way up and on plane. What a way to start my monday! Its a 89 mariner i will try to find the pitch when i get off

Top
#11896578 - 10/24/16 07:50 AM Re: 90 hp mariner question [Re: YAKaddict]
YAKaddict Offline
Pro Angler

Registered: 11/02/14
Posts: 506
Loc: Plano
Thank you guys for the input btw. Ive learned some things today. I have been running 6500 often when i need to get across the lake. My speed is taken off of the lowrance so who knows how accurate that is.

Top



© 1998-2017 OUTDOOR SITES NETWORK all rights reserved USA and Worldwide