Reply
 
Thread Tools Search this Thread
 
Old 24 February 2021, 06:19   #1
Member
 
Country: UK - Scotland
Town: Argyll
Make: Ribtech
Length: 5m +
Join Date: Feb 2021
Posts: 3
Engine size Ribtech 5.35??

Hi all, looking for a bit of advice please, I want to change my engine for a younger outboard and I am tempted by the economics to downsize. I have a 5.35 ribtech I estimate is 1999 or there abouts I currently have a 1996 90hp Mercury 2 stroke that absolutely flies. I am considering moving to a new 60hp mariner 4 stroke and I have been offered a good trade on price.

There is another motor available 2016 75 mariner with 900hrs on it but regularly serviced.

Couple of things, I want to be able to water ski behind it but it's not the main use of the boat and speed isn't my priority. Would the boat be able to take the extra 25kg of the 75 from the 90? The transom is rated for 90 but I'm concerned this is specifically related to 2 stroke.

Any help would be much appreciated.

Cheers

Peter
__________________

__________________
PMD99 is offline   Reply With Quote
Old 24 February 2021, 06:36   #2
Member
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 10,431
RIBase
Quote:
Originally Posted by PMD99 View Post
Hi all, looking for a bit of advice please, I want to change my engine for a younger outboard and I am tempted by the economics to downsize. I have a 5.35 ribtech I estimate is 1999 or there abouts I currently have a 1996 90hp Mercury 2 stroke that absolutely flies. I am considering moving to a new 60hp mariner 4 stroke and I have been offered a good trade on price.



There is another motor available 2016 75 mariner with 900hrs on it but regularly serviced.



Couple of things, I want to be able to water ski behind it but it's not the main use of the boat and speed isn't my priority. Would the boat be able to take the extra 25kg of the 75 from the 90? The transom is rated for 90 but I'm concerned this is specifically related to 2 stroke.



Any help would be much appreciated.



Cheers



Peter


Performance wise, going from an old school 2t90 to a modern 4t60 will be disappointing. You will have to change “it flies” to “it’s good on fuel” What’s the boat rated to?
__________________

__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:https://www.youtube.com/watch?v=unkIVvjZc9Y
Pikey Dave is offline   Reply With Quote
Old 24 February 2021, 06:38   #3
Member
 
Country: UK - Scotland
Town: Argyll
Make: Ribtech
Length: 5m +
Join Date: Feb 2021
Posts: 3
90hp stamped on the transom.
__________________
PMD99 is offline   Reply With Quote
Old 24 February 2021, 06:57   #4
Member
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 10,431
RIBase
Quote:
Originally Posted by PMD99 View Post
90hp stamped on the transom.


Sorry I missed that in your original post.
Controversial but here goes:- I’d be looking for a nice used or even new etec 75/90. They are out of production so you might pick up a bargain from a dealer with old stock. They are going to be supported by BRP for the next 10 years. You need to be prepared to get minimal/zero residual after 10 years, so factor that into the price you pay. What you will get is a clean/economical/lightweight/minimum maintenance lump with buckets of torque for pulling a skier.
Or you could go for a 90/4t. Whatever you put on, won’t give you the same grunt as the 90/2t. But that’s Greta for you
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:https://www.youtube.com/watch?v=unkIVvjZc9Y
Pikey Dave is offline   Reply With Quote
Old 24 February 2021, 14:19   #5
Member
 
Country: UK - Scotland
Town: Argyll
Make: Ribtech
Length: 5m +
Join Date: Feb 2021
Posts: 3
Apologies for the ignorance but what would be the benefit of getting a 75 etec over the 75 mariner that's local to me?

Used outboards are like hen's teeth at the moment and I have been quoted lead in times for new ones of up to four months!

Reliability is my main concern as I can't get an auxiliary on the back.

Thanks for the help

Peter
__________________
PMD99 is offline   Reply With Quote
Old 24 February 2021, 16:00   #6
Member
 
Pikey Dave's Avatar
 
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 10,431
RIBase
Quote:
Originally Posted by PMD99 View Post
Apologies for the ignorance but what would be the benefit of getting a 75 etec over the 75 mariner that's local to me?



Used outboards are like hen's teeth at the moment and I have been quoted lead in times for new ones of up to four months!



Reliability is my main concern as I can't get an auxiliary on the back.



Thanks for the help



Peter


The Etec is a DI 2 stroke, I’m assuming the Mariner is a 4 stroke. Weight for weight the Etec will give more grunt & “probably” be lighter. Pulling a skier is about low down torque, which the Etec will have in spades compared to an equal hp 4t.
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4:https://www.youtube.com/watch?v=unkIVvjZc9Y
Pikey Dave is offline   Reply With Quote
Old 25 February 2021, 03:15   #7
Member
 
Country: UK - England
Town: Nottinghamshire
Boat name: bo bo
Make: zodiac
Length: under 3m
Engine: mercury 3.5hp
Join Date: Jun 2014
Posts: 53
Stick with the 90 until it goes bang...look after it and should see years of service yet a while. 4 strokes are a little more economical but they are more complicated so ��. The 2 stroke puts a fizz in me dingle that tge 4's don't...consider the weight too...Let the thread know what you do....real useful information then.
__________________
fastasfox is offline   Reply With Quote
Old 25 February 2021, 11:48   #8
Member
 
beerbelly's Avatar
 
Country: UK - England
Town: teesside
Boat name: magic
Make: humber 5.5
Length: 5m +
Engine: mariner 115
MMSI: 232012453
Join Date: Apr 2014
Posts: 1,296
them old mercury 2 strokes are very reliable if maintained .if its a good one and you look after it you could still be using it in 10 years time. the new 4t are lovely and quiet and the exhaust fumes dont seem to get you when ticking over or going slow but for the actual experience of hooning about in your rib there wont be £6k worth of improvement if you swap and if you go down to a 60hp it will feel like you have taken a backward step .if it was me id keep what you have if your outboard has issues thats a different thing
__________________
beerbelly is offline   Reply With Quote
Old 25 February 2021, 18:01   #9
Member
 
Maximus's Avatar
 
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 5,071
Send a message via AIM to Maximus
Quote:
Originally Posted by PMD99 View Post
Hi all, looking for a bit of advice please, I want to change my engine for a younger outboard and I am tempted by the economics to downsize. I have a 5.35 ribtech I estimate is 1999 or there abouts I currently have a 1996 90hp Mercury 2 stroke that absolutely flies. I am considering moving to a new 60hp mariner 4 stroke and I have been offered a good trade on price.

There is another motor available 2016 75 mariner with 900hrs on it but regularly serviced.

Couple of things, I want to be able to water ski behind it but it's not the main use of the boat and speed isn't my priority. Would the boat be able to take the extra 25kg of the 75 from the 90? The transom is rated for 90 but I'm concerned this is specifically related to 2 stroke.

Any help would be much appreciated.

Cheers

Peter
If you're thinking of investing in a completely new motor (ie spending a few Grand ...on an already oldish Rig) personally I'd give consideration to "moving on" what you have now "as is"..and putting the extra money to another better used Set up which does suit your needs more closely (that you can try out before you Buy!) ...and may well be a better Boat/Engine combo ...as well as investment longer term
__________________
A clever Man learns by his mistakes..
A Wise Man learns by other people's!

The Road to HELL ..is Paved with "Good inventions!"
Maximus is offline   Reply With Quote
Old 26 February 2021, 17:49   #10
Member
 
lakelandterrier's Avatar
 
Country: UK - England
Town: Gloucester
Boat name: Lunasea
Make: Ribcraft
Length: 5m +
Engine: Suzi 140
MMSI: 232005050
Join Date: Sep 2007
Posts: 1,700
I think any move from a 90 to a 60 you will regret. I'd say if you are used to a 90 2/S you will be disappointed with a heavier 4S with only 2/3rds of the power.

What's your thinking behind the change? I'd keep to a 90 whether 2/S or 4/S.
__________________

__________________
Member of the Macmillan Round the Isle of Wight Club
lakelandterrier is offline   Reply With Quote
Reply

Tags
rib

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




All times are GMT -5. The time now is 18:20.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.