Reply
 
Thread Tools Search this Thread
 
Old 21 May 2015, 09:17   #1
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
What outboard should I buy

Just purchased this Zodiac Pro 470. It has just been retubed but the old 70hp is not working.

Click image for larger version

Name:	ImageUploadedByRIB Net1432214233.708907.jpg
Views:	245
Size:	40.9 KB
ID:	105505

The maximum rated horsepower is 70hp.

I want to buy a new engine and am debating on whether I should get a 50hp, 60hp or 70hp.

I will probably go with the old 2 stroke technology because it works .

My local dealer sells Tohatsu and I have purchased 2 brand new Tohatsus in the past from them. The service has been fantastic. I am not changing dealer in a hurry.

I don't care about resale, I will keep it a long time and not use it much. Fuel consumption is not particularly important and I will never use it enough for the fuel savings to make up the extra cost of the more fuel efficient motors.

I spend most of my time flat out or close to it.

Honda makes the Tohatsu 4 strokes in this up range at least and they are priced about the same as Honda.

I have included the TLDI and 4 strokes just to compare.

A 50 hp old school 2 stroke Tohatsu weighs 87kg and burns 5.5 gallons per hour at full throttle. Price $5190

A 50 hp TLDI Tohatsu weighs 95kg and burns 4.3 gallons per hour at full throttle. Price $6500

A 50 hp 4 stroke Tohatsu weighs 97kg and burns 4.2 gallons per hour at full throttle. Price $7390

A 60 hp old school Tohatsu weighs 115kg and burns 6.3 gallons per hour at full throttle. Price ?

A 60 hp 4 stroke Tohatsu weighs 110kg and burns 5 gallons per hour at full throttle. Price ?

A 70 hp old school 2 stroke Tohatsu weighs 115kg and burns 7.4 gallons per hour at full throttle. Price $6400

Both the TLDI and 4 stroke don't have a 70hp, only a 75hp.

I must say I am surprised at how light the 4 strokes are.

Unfortunately Tohatsu doesn't include specifications on how noisy they are. I have no issue with my 90hp old school Tohatsu 2 stroke with noise.
__________________

__________________
kubcat is offline   Reply With Quote
Old 21 May 2015, 09:39   #2
Member
 
Country: UK - Scotland
Town: Denny
Boat name: Hebridean Storm
Make: Coastline
Length: 6m +
Engine: Honda 130hp
MMSI: 235107505
Join Date: Mar 2013
Posts: 835
If you're going to keep it a long time, think about the availability of parts. How much longer will we be able to get carburettor parts for? Legislation on inland water re emissions ?........Just a couple of things worth consideration.
__________________

__________________
Last Tango is offline   Reply With Quote
Old 21 May 2015, 14:18   #3
Member
 
spartacus's Avatar
 
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 3,267
RIBase
If money was no option then Yamaha's F70 should definitely be on your wish list. 117kg, uber-quiet 4-stroke technology. Not cheap, but you get what you pay for.

The Tohatsu mid-range 2-strokes are tried and tested. They're pretty agricultural, but having said that they're easy to maintain, parts are of the highest quality, etc. The M60/70C are effectively the same engines, same block, etc. With the right propeller, 17" pitch would work on a Zodiac 470, then they're hard to beat.

That's my tuppence worth.
__________________
Is that with or without VAT?
spartacus is offline   Reply With Quote
Old 21 May 2015, 17:58   #4
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
Last Tango, fair point.

Spartacus, the F70 is $9600. Yes it is pricey, about 50% more than the 2 stroke 70hp Tohatsu. I can see why, it probably has more than 50% more parts. I am sure it will be quieter, more economical and easier starting. If it was my daily driver I would do it. For maybe 10 trips a year, no.

I guess my real question is 50hp or 70hp. Zodiac on their website has a Pro 500 listed with similar specs (4.7m). They have max allowed hp 70, max preferred 50hp.

We have 1 vote for 60/70 and no votes for 50 yet.
__________________
kubcat is offline   Reply With Quote
Old 21 May 2015, 21:06   #5
Member
 
Country: Australia
Town: Dalmeny
Make: zodiac
Length: 5m +
Engine: outboard
Join Date: May 2015
Posts: 627
Ive just bought another boat with my second Yam 70 4 stroke, love these engines. What do you mean by 2 strokes work, a friend of mine has now clocked up 5000 hrs on his (yam 70 4 stroke) service boat to a house boat company and not had an issue. The house boats have hondas which normally get auctioned off at around 6-7000hrs.

If you enjoy the smell of 2 strokes great but you have to ask why most commercial operators use 4 strokes (reliability, economy). I also own a boat with the lean-burn Suzuki 90 and cant fault it. My kids used to get sick from the smell of a 2 stroke which is why I swapped to 4 on a formula 15 (now sold).

Service costs on the last 70 4 stroke were almost spot on the $200 down here at Merimbula mowers and outboards, Ive heard prices tend to be much higher up in Sydney.

A 70 Yam 2 stroke is always going to be easier to re-sell if you decide to get rid of the outfit in my opinion but if I planned keeping the boat for years a 4 stroke would be my only choice.

Jon

__________________
jonp is offline   Reply With Quote
Old 21 May 2015, 22:36   #6
Member
 
Rover310's Avatar
 
Country: USA
Town: Northern New Mexico
Make: Avon Rover 310 Aero
Length: 3m +
Engine: Evinrude 6 HP
Join Date: Apr 2015
Posts: 54
Quote:
Originally Posted by kubcat View Post
Just purchased this Zodiac Pro 470. It has just been retubed but the old 70hp is not working.
Looks like that Evinrude 70 is an early 1990's model... I've got a '91 Evinrude 6 hp which has the same style hood decals as yours. So any idea what the issue may be with the motor?
__________________
Rover310 is offline   Reply With Quote
Old 22 May 2015, 00:08   #7
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
Rover310, no ideas what's wrong with the current motor, haven't picked up the boat yet. The previous owner said it was a 70's and it is $&@;5&.

I do want a new motor so not keen on fixing the old one.
__________________
kubcat is offline   Reply With Quote
Old 22 May 2015, 00:10   #8
Member
 
kubcat's Avatar
 
Country: Australia
Town: Sydney
Boat name: Lunasea
Make: Ribtec 890SX
Length: 8m +
Engine: Yamaha ME 421STI x 2
Join Date: Aug 2009
Posts: 470
What outboard should I buy

jonp, I am starting to see a pattern here. Those that have 4 strokes usually tend to be pretty happy with them.

Good looking boat you have.

Food for thought.
__________________
kubcat is offline   Reply With Quote
Old 22 May 2015, 15:58   #9
Member
 
Country: UK - England
Length: 3m +
Join Date: Sep 2008
Posts: 2,250
Why do u spend most time @ WOT? Would think that affects decision another 50 vs 70?
__________________
ShinyShoe is offline   Reply With Quote
Old 22 May 2015, 17:19   #10
Member
 
spartacus's Avatar
 
Country: UK - Scotland
Town: Aberdeenshire
Boat name: Sula
Make: Ribcraft 4.8m
Length: 4m +
Engine: Tohatsu 60hp + aux
MMSI: 235087213
Join Date: Jun 2007
Posts: 3,267
RIBase
If the hull allows, then run it it to capacity. Ever considered that you don't have to use all your horses? You can call upon them when you actually need them, rather than scream the nuts of an under-powered engine. Most Zodiac 470s I've seen use a Yammie 60hp, but only because the next engine up was the F80 (at the time).
__________________

__________________
Is that with or without VAT?
spartacus 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 07:44.


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