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Old 15 December 2013, 15:24   #1
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2 or 4 stroke

Hey guys really need some advice!

I have a 3.8m sea search inflatable and i need a engine I'm looking at a 25hp but cant decide for 2 or 4 stroke!
I will be using my boat for fishing towing things and general cruising around, i live close the a harbour with a ramp..

Any advice would be great!
Cheers
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Old 15 December 2013, 15:31   #2
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Do you have a trailer? I've a 3.8 with 25 two stroke.....you won't want to carry it far.....you won't carry a four stroke 25 at all.
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Old 15 December 2013, 15:35   #3
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Yes i do have a trailer
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Old 15 December 2013, 15:38   #4
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Quote:
Originally Posted by liammurraystrout View Post
Yes i do have a trailer
Are you going to always have the engine mounted? If yes it's down to the usual arguments for and against each....
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Old 15 December 2013, 16:36   #5
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Liam,

Welcome to Ribnet.

+1 to Peter's comments. Do a search - there are plenty of discussions on this subject lurking in here!
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Old 15 December 2013, 18:49   #6
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Quote:
Originally Posted by PeterM View Post
Do you have a trailer? I've a 3.8 with 25 two stroke.....you won't want to carry it far.....you won't carry a four stroke 25 at all.

+1 If you are leaving it mounted on the transom then a 4 stroke just about edges it on fuel economy and noise level.

But for removing it manually, simplicity, power to weight, better hole shot then 2 stroke would be (and is) my choice.

Just my opinion
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Old 25 December 2013, 16:00   #7
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Originally Posted by bartiny View Post
+1 If you are leaving it mounted on the transom then a 4 stroke just about edges it on fuel economy and noise level.

But for removing it manually, simplicity, power to weight, better hole shot then 2 stroke would be (and is) my choice.

Just my opinion
You forgot reliability...A 2 stroke will wear out the piston rings at least 2/3rds quicker than a 4 fourstroke, sometimes much quicker still, and the plugs get fouled with oil much quicker too...Not good to be left with no compression and a dead engine when your out at sea miles from land!
Suzuki DF 4 stroke outboards add even higher reliabilty and dependability than 4 strokes from other outboard manufacturers because they use ultra reliable timing chains, not the usual "Pray to god it never snaps" timing belts!...Lets face it, the consequences of a snapped timing belt at an inopertune moment could be absolutely disasterous...Just saying.
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Old 25 December 2013, 16:17   #8
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For that size boat you cant beat a two stroke especialy if your towing toys as much better low end grunt
Forget wearing out rings they just dont do the hours! Most die of old age neglect or abuse
Power to weight is much better & less to go wrong & you wont need a laptop to fix it! & lets face it fuel consumption at that size is hardly an issue
A 25 yam or tohatsu would be ideal
Imho of course
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Old 25 December 2013, 16:53   #9
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Quote:
Originally Posted by jeepster View Post
You forgot reliability...A 2 stroke will wear out the piston rings at least 2/3rds quicker than a 4 fourstroke, sometimes much quicker still, and the plugs get fouled with oil much quicker too...Not good to be left with no compression and a dead engine when your out at sea miles from land!
Suzuki DF 4 stroke outboards add even higher reliabilty and dependability than 4 strokes from other outboard manufacturers because they use ultra reliable timing chains, not the usual "Pray to god it never snaps" timing belts!...Lets face it, the consequences of a snapped timing belt at an inopertune moment could be absolutely disasterous...Just saying.
Haven't you had enough of being ridiculed?

Quote:
Originally Posted by beamishken View Post
For that size boat you cant beat a two stroke especialy if your towing toys as much better low end grunt
Forget wearing out rings they just dont do the hours! Most die of old age neglect or abuse
Power to weight is much better & less to go wrong & you wont need a laptop to fix it! & lets face it fuel consumption at that size is hardly an issue
A 25 yam or tohatsu would be ideal
Imho of course

I second what BeamishKen said.
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Old 25 December 2013, 19:23   #10
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Quote:
Originally Posted by jeepster View Post
You forgot reliability...A 2 stroke will wear out the piston rings at least 2/3rds quicker than a 4 fourstroke, sometimes much quicker still, and the plugs get fouled with oil much quicker too...Not good to be left with no compression and a dead engine when your out at sea miles from land!
Suzuki DF 4 stroke outboards add even higher reliabilty and dependability than 4 strokes from other outboard manufacturers because they use ultra reliable timing chains, not the usual "Pray to god it never snaps" timing belts!...Lets face it, the consequences of a snapped timing belt at an inopertune moment could be absolutely disasterous...Just saying.
WOW Thanks for that I had better junk my 25 year old Mariner 25hp 2st 110psi per cly. never missed a beat (as far as I know) 2 str. for a more reliable 4 str.
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