outboard selection
Printed From: The Fishing Website
Category: General Forums
Forum Name: The Boat Shed
Forum Description: Discuss all things boating.
URL: https://www.fishing.net.nz/forum/forum_posts.asp?TID=75165
Printed Date: 05 Nov 2026 at 10:55pm
Topic: outboard selection
Posted By: M.I.L.F
Subject: outboard selection
Date Posted: 29 Jan 2012 at 7:24pm
| hi all im new to all of this i need some advice im looking at geting a 5.5 surtees but im not sure what engine to pick a115 2s yammie or a 90 yammie or a 90 etec is the extra cash worth it and is the fuel usage that much please help as this is my first real big boat so all views welcom |
Replies:
Posted By: Fishing Addiction
Date Posted: 29 Jan 2012 at 7:42pm
| the deep v gives them awesome ride but need a lil more horsepower to run them. Guys who have had 90s have been satisfied but the ones with 115 seem to be stoked. Go 115 if the budget allows but also interested in others opinions |
Posted By: RC1
Date Posted: 29 Jan 2012 at 8:56pm
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If you want reliability go with Yamaha, the F100 will go well on that hull, well worth the extra dollars for a 4 stroke, you wont be disappointed. |
Posted By: M.I.L.F
Date Posted: 29 Jan 2012 at 9:01pm
i am was thinking of the 90etec and also looking at fuel economy,resale later in time and the differance in price is about $6500 thats for the 115 2s yammie just need to know the pros and cons $6500 differance is a lot of cash that can buy a few tank gas and a good few services and beers and is the noise on a 115 that much louder and does it use more fuel than the 90etec in other words can i justify the $6500 or
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Posted By: M.I.L.F
Date Posted: 29 Jan 2012 at 9:05pm
| so is the f100 better than the 115 2 s in fuel use and service |
Posted By: RC1
Date Posted: 29 Jan 2012 at 9:12pm
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Yes they will use approximately 60% less fuel compared to the 115 2 stroke, they are easy to service, servicing costs are a little bit more than a 2 stroke. If you want reliability go the Yamaha. Yamahas back up and after sales support, warranty is second to none. If it was me i'd be spending the extra and going with the Yamaha. With the E-tec you still have to service them every year and the oil and sparkplugs are expensive, so you are not getting much of a saving. |
Posted By: soul rebel
Date Posted: 29 Jan 2012 at 9:22pm
| I used to have a 200 ho etec on a 7m alloy great engine, my new rig a 1 ton havier with A yamaha F300 V8 i find the yamaha is cheaper on the same round trip, no expensive oil need and much quiter. I would never go back to an etec after owning a yamaha 4 stroke. Makes me wounder how reliable the etec claims are. |
Posted By: M.I.L.F
Date Posted: 29 Jan 2012 at 9:25pm
| hows the mercs 90 or 115 are the any good |
Posted By: Denny Boy
Date Posted: 29 Jan 2012 at 10:06pm
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SHARK BOY wrote:Posted By: M.I.L.F
Date Posted: 29 Jan 2012 at 10:17pm
| thanks glad to hear about the merc so far yammie and merc looks good with the etec i got that itchy feeling in side that warning bell in the back of my mind to many bad thing being said about etecs so yammie 4s or merc opti mmmm whats the service cost of merc and yammie at pressent i got a 15 yammie so i will see a jump in cost |
Posted By: Big -Dave
Date Posted: 29 Jan 2012 at 10:22pm
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Any of the top brand fourstrokes are great, Suzuki, honda Yamaha..and the 2 stroke optimax Resale with a 4 stroke will be better. There are threads on here detailing why an Etec would possibly not be your best choice. ------------- you can't fix an idiot with duct tape, but it does muffle them for a while... |
Posted By: Tagit
Date Posted: 31 Jan 2012 at 9:58am
Have you got some figures about fuel burn on the F100? Sounds like Yamaha must have come close to discovering the 'holy grail' if it is genuinely 60% more fuel efficient that the 115 2 stroker. As far as I can figure out the SWS 115 is 23lph at 4000rpm cruise and the F100 is 15lph at 4000rpm cruise for a difference of ~35%. If the F100 is truly burning ~9lph at 4000rpm then there is some awesome new technology that they need to very quickly roll out into their larger engines. Just imagine a F200 cruising at 18lph instead of the 30lph that they currently do.
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Posted By: Bounty Hunter
Date Posted: 31 Jan 2012 at 11:13am
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perhaps it was mean to read "60% of the 115's fuel rate"?
------------- No disintegrations! |
Posted By: Tagit
Date Posted: 31 Jan 2012 at 4:31pm
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Posted By: M.I.L.F
Date Posted: 31 Jan 2012 at 5:54pm
So the differance is +-25% between the 4stroke and the 2 stroke in fuel efficient is it the really worth all that extra cash for a 4s and im looking at 115 2s and a F100 and a 90 or 115 optimax because i can see the green,eco benefit no more oil tank to fill and that smell which i love  is the noise differance that much between 4s and 2s
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Posted By: blackboat
Date Posted: 31 Jan 2012 at 7:07pm
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go 4 stroke dude ,no messing with oil tanks and as said the resale will be better worth paying the extra for my opinion ------------- http://www.legasea.co.nz" rel="nofollow"> 
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Posted By: Tagit
Date Posted: 31 Jan 2012 at 7:22pm
| Noise difference is great at idle, not so much at cruise. Resale is much better and easier. You also get more range out of your tank which may be important in a boat that size with I guess a small tank. If you troll a bit, the 4 stroke is a big improvement on fuel use, noise, and smell. If you cruise around at 4000rpm from spot to spot and then drift or anchor, but never far from shore, the main difference is in the resale. If you are mechanically minded at all the SWS 2 stroke Yamahas are incredibly easy to maintain yourself. |
Posted By: M.I.L.F
Date Posted: 31 Jan 2012 at 8:15pm
what does sws mean the tank is 100L should be heeps lol the resale is very important I'm looking at keeping the rig for a very long time so its important to get it right and that why I'm asking my fellow boaties to share their wisdom  and are the merc opti max better than etec since the technology is similar any one got any merc opti max disappointment
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Posted By: Catchelot
Date Posted: 31 Jan 2012 at 9:06pm
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what does sws mean? Yamaha model mate, Salt Water Series. Have mates with Optis and they love em, but some folk of course hate them and reckon they are problematic... I think you will get moans and groans and goods and bads with any motor these days. However, all the Jap motors seemed to have got better over the years whereas Mercs are good as well, sadly we have lost OMC with Evinrude/Johnson to Etec and don't forget the Tohatsu, a good basic reliable motor, merc usa now own Tohatsu and I believe all Jap mercs up to 50hp are Tohatsu, same with Mariner... ------------- "The sea, once it casts its spell, holds one in its net of wonder forever." - Jacques Cousteau |
Posted By: Denny Boy
Date Posted: 01 Feb 2012 at 8:48am
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Posted By: Elpescador
Date Posted: 01 Feb 2012 at 9:11am
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Posted By: NumnuT_AUS
Date Posted: 01 Feb 2012 at 2:49pm
I have the 2003 model f100 on my 5m quintrex, & love it!
it came standard with a 2 stroke 90hp, we upgraded to the 4 stroke for an extra 4k i think..
after 8-9 years and just under 600hrs its the best boating decision i have made.......
 Cheers
Craig
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Posted By: M.I.L.F
Date Posted: 01 Feb 2012 at 4:47pm
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from the long term point the 4s or a opti or etec will be better than a plain 2s the cost will balance out as I'm going to keep it for a long time the price of fuel is also not gonna come down is their any good dealers around still because you hear some shocking stories sometime the way the sharks screwed them over or just don't care type of attitude and all over bad service dealers |
Posted By: family affair
Date Posted: 01 Feb 2012 at 6:02pm
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dude i had a 5.5 with a 90hp merc on it and it was crap go the 115hp specliy if you want to have a bit of power in reserve (ie bar crossings or crap conditions ). you will regret the 90hp i can garntee that ohter option could be a 100hp 4 stroke ------------- mv maui |
Posted By: M.I.L.F
Date Posted: 01 Feb 2012 at 6:12pm
| im looking at a f100 ,90optimax or 90 etec does it apply to those motors to or only plain 2 s |
Posted By: Fishing Addiction
Date Posted: 01 Feb 2012 at 6:18pm
| from what everyone has said the f100 sounds by far the best option |
Posted By: M.I.L.F
Date Posted: 01 Feb 2012 at 6:47pm
| i see the dissplacement is the same and f100 is only 10kgs heaver |
Posted By: Moki Marko
Date Posted: 01 Feb 2012 at 8:42pm
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I always seem to get beaten up when I enter this dabate - but here goes. Further to the comments from Fishing Addiction and Family Affair (hmm both FA's) the 5.5 surtees needs power - they have no strakes or chines to plane on so need more speed than other hull of the same size before they get up on top of the water. If you look at other threads you will see that they also dont carry too much weight in the bum well, ie a heavy 4 stroke motor will not work well - so the balance is to get as much power with as little weight as you can - The F100 is a compromise, I'm not sure a good one as it's heavier than a 90 2 stroke but not really any more powerful - i'd seriously look at the lightest 115 you can find - if it's an optimax or etec so be it. |
Posted By: family affair
Date Posted: 01 Feb 2012 at 9:28pm
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hey man message raging bull he has a 5.5 with a 4 banger on the bum ------------- mv maui |
Posted By: captain.Gav.
Date Posted: 01 Feb 2012 at 9:32pm
| Shark boy. i have had a simalar setup to what your looking at. I would not go below 100hp on that hull. Also think would go 4-stroke if can reach that budget as wouldnt ever regret the reliability @economy. As for the extra weight of only 10kg then wouldnt worry about that as on the opti specs they dont include the inbuilt oil tank of 4kg full, so that close its not worth worrying bout. The oil cost @ comsumption is also quite high. REALLY wouldnt reccomend an opti or etec. my picks would be yammy f100, f115, honda 115 or sws 2-stroke 115. Moki marco is right about weight at back but throw a hydrafoil 300 on @ youll have no probs. |
Posted By: Mullins
Date Posted: 01 Feb 2012 at 10:08pm
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My dad has just put an order in on a Surtees 5.5HT. He has gone with a 90hp Honda. When he talked to the factory guys they recommended a 90hp as the best balance for that hull. I can understand dealers being a bit biased and wanting to flog off cheap packages, but this was a guy who'd already decided on the hull and just wanted advice about what to power it with. They didn't see any need for a larger motor.
Personally I like having excess grunt but he's a bit more conservative. I'll let you know how it goes....
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Posted By: captain.Gav.
Date Posted: 01 Feb 2012 at 10:21pm
| Had a 90hp on mine, underpowered in my opinon with 3-4 guys on board. Swapped to a 115hp, so 25hp extra (almost 1/3 extra horespower) made a huge difference. |
Posted By: Capt Asparagus
Date Posted: 02 Feb 2012 at 1:28am
| Suzuki make darn fine 4 strokes too. My choice would be either the suzi or the yamaha, 4strokes, 100-115hp. |
Posted By: tas-tackle
Date Posted: 02 Feb 2012 at 2:49am
What he said...  quiet.. economical fuel usage.... savings on oil usage for a 2 stk... great for trolling.. better resale.. You have had all the answers here over the last two pages... ------------- http://postimage.org/" rel="nofollow">  http://www.tas-tackle.co.nz |
Posted By: Davo
Date Posted: 02 Feb 2012 at 7:04am
| Dave, i put a 90 suzi on my 5.5 ht. its fine for me, but if your dad will be carting heaps of people and dive tanks, belts etc id consider going bigger. I normally only have 3 on mine at once, and either spear gear or rods...works well with that weight. Super quiet and cheap to run. I leave mine idling quite a bit and youd hardly know there is an engine going apart from the water jet. Ta, dave |
Posted By: Mullins
Date Posted: 02 Feb 2012 at 9:55am
| Yeah I think it'll be fine for him Davo. The boat will be used 50/50 for diving and fishing, 2-4POB but he isn't exactly a speed demon. We've talked to a few people who have similar rigs and while some like having extra power, others felt that putting a heavier engine on the back turned the 5.5 into a wallowing pig. |
Posted By: Falco
Date Posted: 02 Feb 2012 at 4:37pm
Agreed ,also somthing said for power to weight ratio - we did a very sophisticated on water test with my boat and one with a F115 from a timed standing start,same hull,he eventaully caught up and passed me but I would have been far enough ahead for my mate who was on board to start laughing in horror (he has a Yammie F150).
I can do 33kts, he could do more 36sih?,I could get out of the hole and on the plane much quicker...so I reckon your right what is safer my 90HP DI or a 115 "more powerful" wallowing 4 banger?..oh and he though I used less fuel also.
I like the sound of the F100 though,that would be my pick if I was trolling/idleing alot. ------------- as dead as dead is |
Posted By: Mullins
Date Posted: 02 Feb 2012 at 5:01pm
| The low rev range is surely more important when it comes to safety and ability to control a boat in difficult seas, high revs being reserved for cruising on flat water. My Merc 2-stroke has its faults, but at least it's got heaps of torque. Reminds me, anybody got a reliable source for torque/hp vs rpm figures for the main brands? |
Posted By: Moki Marko
Date Posted: 02 Feb 2012 at 7:01pm
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...always a bone of contention that manufactures don't publish torque figures, would be so useful for boaties, even the stated HP figures have traditionally been a marketing tool, and not very accurate, interesting how we usually consider cars by their cc rating not the HP. I think with boat engines it pays to consider the engine size as well as the stated hp. Be interested to hear your follow-up opinion on yr dad's boat Dave, keep us posted. |
Posted By: 41 1/2 below
Date Posted: 02 Feb 2012 at 7:04pm
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Ive got a workmate 5.5 with a yamaha 90a two stroke on it, seem to go fast enough ? 27 kts two people 24 when fully loaded.
Only hit 40 hrs last time out so might even losen up a bit. No premix so thats all good. Yamalube is a bit expensive 60 $ for four liters approx I reckon I use about 15 to 20 liters petrol an hour running and that seems to do a litre of oil so 30 to 40 dollars a hour approx mite be a bit lower than that on a good day. Been caught out on the wairarapa coast by the sneaky southerlies sitting on sea anchor too long and punched buried the thing for 10 miles with no problems. If there were heaps of other boats overtaking me I might think shes underpowered but havent really thought that but like you this is my first real boat, apart from zodiacs and macs. Havent had any probs with either yet, touch wood, apparently the yammy 3 cylinder 90 design is 25 years old with only cosmetic changes so it must be fairly strong, but a bit noisy, smelly and thirsty but she starts up first pop all the time. For my final two cents i reckon it mite come down to what your general launch spot is like, ours is a bay with heaps of rocks in it so a light motor with the ballast tanks closed and she floats in knee deep water and is easy to push around. If you have a nice concrete ramp to use upsizing would be ok.
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Posted By: Tagit
Date Posted: 02 Feb 2012 at 8:47pm
| 41 - if you are doing a litre of oil for 20l of fuel in that engine it is not running right. Should be between 50:1 and 100:1 fuel/oil ratio unless your engine is double oiling during the run in. You might want to get it checked. |
Posted By: 41 1/2 below
Date Posted: 08 Feb 2012 at 9:00am
| Yep Tagit you are right its probably a little less than that went out last friday was 40lts for of fuel for bit less than a litre of oil, now that i think of it i have counted all the oil i put in the fuel for the initial run in period as well the motor to get my figures, sweet feeling better already Thanks. |