two stoke or four

[phil richards]

Oh dear, more questions!!! What do you experts think Two or Four. Could you explain the pros and cons of each? cheers Phil

[Delta 15]

I'm not an expert by any means, but here's some advantages for each type:

Two stroke:
Lighter
Cheaper to buy used
Mechanically simpler
Cheaper to service

Four stroke:
Cheaper to run
Lower emissions (some lakes prohibit two-strokes)
No need for premix/injection oil
Greater choice of new models
Quieter

I'm sure I'm missing other points that others will add.

[phil richards]

Originally Posted by Delta 15

I'm not an expert by any means, but here's some advantages for each type:

Two stroke:
Lighter
Cheaper to buy used
Mechanically simpler
Cheaper to service

Four stroke:
Cheaper to run
Lower emissions (some lakes prohibit two-strokes)
No need for premix/injection oil
Greater choice of new models
Quieter

I'm sure I'm missing other points that others will add.

Thank you!

[ashbypower]

Originally Posted by Delta 15

I'm not an expert by any means, but here's some advantages for each type:

Two stroke:
Lighter
Cheaper to buy used
Mechanically simpler
Cheaper to service

Four stroke:
Cheaper to run
Lower emissions (some lakes prohibit two-strokes)
No need for premix/injection oil
Greater choice of new models
Quieter

I'm sure I'm missing other points that others will add.

Umm the 2 stroke detail is way off for modern 'strokers DFI engines are VERY economical, low on emissions and little difference in weight although generally lighter.

[Delta 15]

Originally Posted by ashbypower

Umm the 2 stroke detail is way off for modern 'strokers DFI engines are VERY economical, low on emissions and little difference in weight although generally lighter.

Sorry, I was thinking about older smokers, like mine

[Vandad]

I have owned both 2 stroke and 4 stroke engines. I prefer 2 stroke. Fuel economy for 4 stroke is about double the 2 stroke, BUT you will have other issues such as old fuel left in the tank, water in fuel, etc. etc. If you think carefully, then it may be easier and cheaper having a 2 stroke! sadly now I have a 4 stroke!

In addition to what other have said:

2 Stroke:
You CAN and WILL enjoy doing DIY jobs on it

4 Stroke
Need to take it to main dealer, especially with new engines having ECU (like car engines need diagnosis computer)

[gotchiguy]

A point and two quotes:

Do a search, this topic has been discussed many times.

Listen to the immortal words of Mr. Vanstone:

My supplier put it this way (he sold both, so was getting the sale either way) 'The Suzy will give you a Jag, the Etec a Ferrari

And also those of Mr. Nocera:

A British RIB is like a sportscar. It is the most nimble thing on the water. Why would you strap lead weights to its rear end?

[lakelandterrier]

What I don't understand is......why if the E-tec 2-stroke is so good , do other manufacturers manage to sell 4-strokes,and why does no-one else manufacture / market modern 2-strokes?

I'm not having a pop at the e-tec, I genuinely just don't understand why there is only 1 producer of this type of engine if it is so good

[Downhilldai]

Originally Posted by lakelandterrier

why does no-one else manufacture / market modern 2-strokes?

Mercury/Tohatsu/Yamaha?

[jyasaki]

Originally Posted by Vandad

4 Stroke
Need to take it to main dealer, especially with new engines having ECU (like car engines need diagnosis computer)

Perhaps if something goes wrong with the ECU. My Yam 115 has not missed a beat in 6 years/500 hrs. Nearly all maintenance is well within the reach of a home mechanic.

jky

[9D280]

And another wee detail pioint with regard to fuel consumption..... The economy discussion only really becomes significant if you do a LOT of low speed stuff. If you are spending most of the time flat out, the engione is chuckng out however much horsepower, you're going to have to burn enough of our favourite fluid to get that......

[gotchiguy]

Originally Posted by 9D280

And another wee detail pioint with regard to fuel consumption..... The economy discussion only really becomes significant if you do a LOT of low speed stuff. If you are spending most of the time flat out, the engione is chuckng out however much horsepower, you're going to have to burn enough of our favourite fluid to get that......

So go etec

Some healthy propaganda

[BogMonster]

The Etec needs a computer too, but the software will work on anything with Windows and a USB port so I have that for minimal outlay

Suzuki diagnostics are available-ish as well, not sure about other brands.

[jyasaki]

Yamaha does sell its diagnostic software, but it's not particularly cheap, as I recall. Windows based, as far as I know. MacNuts are out of luck, I'm afraid.

jky