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Old 02 June 2015, 14:54   #1
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SR4 With Yamaha 3 cylinder autolube 30 hp motor

Looking at a SR4 with Yamaha 30 HP thinking under powered or not..
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Old 02 June 2015, 15:27   #2
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Depends what you want to do with it?
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Old 02 June 2015, 15:55   #3
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There is a similar engined SR4 for sale at Port Edgar
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Old 03 June 2015, 03:28   #4
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Depends what you want to do with it?
Just some fishing
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Old 03 June 2015, 03:32   #5
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Also guys is it easy to replace a valve on the sr4 .
Best place to buy the valve.
69cmw are you talking about your boat.
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Old 03 June 2015, 04:23   #6
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Just some fishing
If you're not doing long passages and not going out in nasty weather, then you should be fine with 30hp.

It's only for the more loony users that you really need trim and tilt and 40-50hp.
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Old 03 June 2015, 08:26   #7
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3 cyl Yamaha

It is a criminal offence against the boating community...

There is only one 3 cylinder Yamaha to fit to a 4m SR and that is the 50hp...

30hp is good for say helping giving rest from paddling, but a 50hp.. just makes everything right!

Get a 50hp and just have a big grin on your face..

Same way 5.4m owners only like SR with 90 Yams on..
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Old 03 June 2015, 08:34   #8
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Apparently some people think it is acceptable to use 25hp on a searider....
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Old 03 June 2015, 10:31   #9
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Quote:
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Looking at a SR4 with Yamaha 30 HP thinking under powered or not..
If you are going to use it for scuba, chuck a 50 on it and enjoy.
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Old 03 June 2015, 11:06   #10
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It is a criminal offence against the boating community...

There is only one 3 cylinder Yamaha to fit to a 4m SR and that is the 50hp...

30hp is good for say helping giving rest from paddling, but a 50hp.. just makes everything right!

Get a 50hp and just have a big grin on your face..

Same way 5.4m owners only like SR with 90 Yams on..
Dam you sir thought had found my new toy but now thinking...:speed boat:
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Old 03 June 2015, 11:30   #11
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Zodiac pro rib, 50hp outboard | eBay

Rib Boat Rigid Inflatable 4.5 meter offshore with yamaha 75 outboard | eBay
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Old 03 June 2015, 14:25   #12
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SR4 With Yamaha 3 cylinder autolube 30 hp motor

69cmw are you talking about your boat.[/QUOTE]


No, not my RIB, Just letting you know what you can get for £3500 near you from a dealer.
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Old 03 June 2015, 15:34   #13
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My SR4m has a 30hp 3-cyl Yamaha and it's perfectly adequate. The engine is in very good condition and has power trim and tilt which makes a useful difference.
Does about 26/27 knots I think.
Suffers a bit of you load the boat up with gear and people though.
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Old 03 June 2015, 17:23   #14
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If you decided to upgrade you might find there is a market for 30HP engines with Power trim, electric start and a good service history - if that is the case.
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Old 03 June 2015, 18:28   #15
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Oh ffs. It's fine. I ran one with a 25 and it clocked 21 kits. I spent a week at the 19canteeen oppie nationals in one with that engine on tiller. No problem.

I have used a 5.4 with that engine and it planed.
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Old 03 June 2015, 19:48   #16
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My SR4 runs with a 30 HP 4 stroke Tohatsu, not underpowered i would say. Getting it on 27 knots 1 person (90 kg), and 24 knots with 2 persons. (+ 90 Kg)
With 2 persons and open flooding hull i wouldn“t like to go on nasty conditions, cause than it“s little underpowered. Alone (1 person) no problem.
A 4 blade Mercury spitfire prop 9.3 x 11 gives a much more quicker holeshot and acceleration than any 3 blade prop i figured out, even if hull is flooded with 1 person getting directly on to plane.
40 hp would be fine, 50 hp will make you a happy chine walk dancer!
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Old 09 June 2015, 10:08   #17
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I have a 4.1 m rib, light one, 30 hp efi tohatsu. Does the job, trim and tilt critical with only 30 hp. 30 hp is the top power rating for my boat, but 40 hp would be much better. For fishing a battery powered outboard will do, lol.....

Did clock 31.4 knots on sale water park according to my gps with 12 inch pitch stainless prop
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