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Old 15 September 2007, 22:24   #1
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Optimax vs TwoStroke

Mercury have 2 x two stroke models:

'Optimax'

and

'TwoStroke'


Obviously i appreciate the basic differences ie 2 stage fuel injection, upto 50% fuel savings

BUT, beyond that, are they more reliable?
better power? surely 2 x 90hp versions are exactly that - 90hp!
better salt water corrosion resistance?

I'm just trying to work out why it's worth spending 50% more on the Optimax?! This extra cost in fuel savings will take a fair while to pay off...

Look forward to hearing your comments.


(This is for a RIB520 for basic runaround with a bit of waterskiing etc ie thinking of 90hp models but it's relevant to all)
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Old 16 September 2007, 02:44   #2
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If your talking about buying new, then your going to be hard pushed to find a 90hp 2 stroke, as they are no longer available and suppliers can only sell existing stock.
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Old 16 September 2007, 05:04   #3
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well that's killed that thread off!
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Old 16 September 2007, 07:32   #4
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Originally Posted by Rogue Wave View Post
well that's killed that thread off!
I'm based in Hong Kong. Suppy isn't the issue! It'll be a long time before China kill the 2-stroke - trust me!

the question is... Optimax or TwoStroke....
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Old 16 September 2007, 07:59   #5
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Is the 2 stroke you are reffering to carb or efi? I have a Suzuki DT225 - it's the last of the Suzuki 2 strokes. It does not use the compresed air technology but it's fuel injected with 2x plugs per cylinder etc - pretty high tech. I get virtually the same fuel consumption as the optimax at anything over 1/2 throttle.

At full throttle there doesn't seem to be much difference between any of the engines. A lot depends on how you will use it.

A basic 2 stroke will obviously be more reliable as there's less to go wrong. I suspect purchasing price will make a difference as well.
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Old 16 September 2007, 08:16   #6
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1. What's the difference in purchase price?
2. What's the price of fuel in Hong Kong?
3. Do you require the extended cruising range that the Opti may give you over the regular 2-stroke? (I expect not, as you say it's for a run-about)

If the answers are:
1. a lot
2. low
3. no
- then I'd go for the regular 2-stroke.

If:

1. not a lot
2. high
3. Yes or No

Then I'd go Opti
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Old 16 September 2007, 08:18   #7
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Originally Posted by codprawn View Post
Is the 2 stroke you are reffering to carb or efi?
this is the optimax:

http://www.mercurymarine.com/engines...pecs.php?ID=51

this is the TwoStroke:

http://www.mercurymarine.co.uk/detail.php?product_id=68


BUT from the Mercury website, i can no longer see the 'TwoStroke' - have they discontinued the model due to the new EU regulations?

I can still buy them here BUT will spares become a problem?

==============


Price difference :

opti - gbp 3500
2-stroke - gbp 2300

range shouldn't be an issue. Will be max 30mins full throttle in any one direction (from port).

fuel price - same as UK
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Old 16 September 2007, 08:28   #8
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Quote:
Originally Posted by tmehew View Post
this is the optimax:

http://www.mercurymarine.com/engines...pecs.php?ID=51

this is the TwoStroke:

http://www.mercurymarine.co.uk/detail.php?product_id=68


BUT from the Mercury website, i can no longer see the 'TwoStroke' - have they discontinued the model due to the new EU regulations?

I can still buy them here BUT will spares become a problem?

==============


Price difference :

opti - gbp 3500
2-stroke - gbp 2300

range shouldn't be an issue. Will be max 30mins full throttle in any one direction (from port).

fuel price - same as UK
Where abouts in HK are you? A friend of mine keeps a yacht in Hebe Haven, Sai Kung.
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Old 16 September 2007, 14:27   #9
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Quote:
Originally Posted by tmehew View Post
this is the optimax:

http://www.mercurymarine.com/engines...pecs.php?ID=51

this is the TwoStroke:

http://www.mercurymarine.co.uk/detail.php?product_id=68


BUT from the Mercury website, i can no longer see the 'TwoStroke' - have they discontinued the model due to the new EU regulations?

I can still buy them here BUT will spares become a problem?

==============


Price difference :

opti - gbp 3500
2-stroke - gbp 2300

range shouldn't be an issue. Will be max 30mins full throttle in any one direction (from port).

fuel price - same as UK
At those prices I'd go for the Opti. It'll have better re-sale value and you should re-coup some of the price difference via lower fuel consumption over the next few seasons, if your fuel costs are similar to the UK.

Out of interest, are those prices before sales sales tax is applied? (they seem very good value)
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Old 16 September 2007, 15:35   #10
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i;m possibly the Opti's biggest fan but I'd put a yamie 2 stroke on every time


if I was afet high tech then I'd go for an Etec.


I don't think the 3 pot opti's are that clever
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