Reply
 
Thread Tools Search this Thread
 
Old 02 August 2006, 07:30   #1
Member
 
Country: UK - Wales
Town: Pembroke
Boat name: Rapscallion
Make: Humber Destroyer 6.0
Length: 5m +
Engine: Yam 150 HPDI
Join Date: Jul 2006
Posts: 70
Optimax or 4-stroke???????

I am looking for a replacement boat, about 6 metre with a motor around 90 - 150hp. Due to my budget the package will be a few years old.
I have moved away from carb'd 2-strokes due to the fuel consumption.
I had assumed I would buy something with a 4-stroke but have seen a few good boats at the right price fitted with Optimaxes (variously 115 / 135 / 150hp).
Can anyone offer any comparisons between the Opti's and typical 4-strokes on:-
Typical fuel consumption
Noise
Servicing costs
Any known faults

Thanks
Jon Tallis
__________________

__________________
Jon Tallis is offline   Reply With Quote
Old 02 August 2006, 12:19   #2
Member
 
Country: UK - England
Town: cornwall
Boat name: nothing
Make: rib eye 430
Length: 4m +
Engine: tatsu 50
MMSI: 666
Join Date: Mar 2006
Posts: 1,916
Talk to mollers he has a 150 opti
On the last Scilly run he used 128 litres I think for 100 miles . But the oil is another 20 or 30 quid I guess . It doesn't use much different to the equivalent 4 stroke , just stinks
__________________

__________________
ian parkes is offline   Reply With Quote
Old 02 August 2006, 12:42   #3
Member
 
Country: UK - England
Town: Lee on the Solent
Boat name: Saintlee
Make: Leeway
Length: 6m +
Engine: Evinrude DI 115
Join Date: Jul 2006
Posts: 325
I know the 4-stroke/2 stroke debate is one that will run and run but why do so many people on here regard the Optimax as the "default" 2-stroke of choice against a 4-stroke? The Evinrude E-tec offers better value when servicing periods costs etc are taken into consideration, is cleaner and on most tests out-performs the Optimax for economy, power and torque (until you get to the highest part of the rev-band). I am sure that one or two E-tec users on here come along and sing its praises.
__________________
Lostboy is offline   Reply With Quote
Old 02 August 2006, 13:05   #4
Member
 
Country: UK - England
Town: Margate / Ramsgate
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam HPDI 250
Join Date: Feb 2002
Posts: 2,835
having had an opti (150) i would always choose this over a 4 stroke. this is a biased opinion and i havent owened any other "new tech" 2 stroke. i have driven 4-strokes and not found them nearly as responsive but they are quieter.
__________________
Daniel is offline   Reply With Quote
Old 02 August 2006, 13:10   #5
Member
 
Country: UK - England
Town: Margate / Ramsgate
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam HPDI 250
Join Date: Feb 2002
Posts: 2,835
in answer to your questions:

Typical fuel consumption
(for the opti 150): 1li / nm or 30 li / hr @ crusing
Noise
opti louder than a 4-s
Servicing costs
little difference
Any known faults
early opti's had a few problems (1999, 2000 i think)

SmartCraft is excellent. Early opti's did'nt have this.
__________________
Daniel is offline   Reply With Quote
Old 02 August 2006, 14:28   #6
Member
 
Country: UK - Wales
Town: Pembroke
Boat name: Rapscallion
Make: Humber Destroyer 6.0
Length: 5m +
Engine: Yam 150 HPDI
Join Date: Jul 2006
Posts: 70
Thanks - keep it coming!

Thanks for replies so far, keep the info coming.
How much noisier is the Opti? I have moved from a Mariner 75 3 cyl, which was bloody loud on full taps. One of the reasons I want to change is so I can actually have a conversation on the boat!
Any views on this?

Anyone got real comparison figures opti Vs 4S on same / similar boat?

Jon
__________________
Jon Tallis is offline   Reply With Quote
Old 02 August 2006, 14:55   #7
Member
 
Hugh Jardon's Avatar
 
Country: UK - England
Town: Reading, Hants
Boat name: Juicy
Make: Sealine F43
Length: 10m +
Engine: 2 x 370hp
MMSI: TBC
Join Date: Sep 2005
Posts: 2,882
have an opti now and have had a honda 4 stroke 90 for last 8 years

on a rib i would have an opti as i think they make a fab noise and performance and economy is great, they make a lovely scream and howl in my opinion which is very enjoyable and at a certain revs it goes very quiet

i did research, spoke with others, test drove a few boats, priced up the options and am very happy with opti
__________________
Hugh Jardon is offline   Reply With Quote
Old 02 August 2006, 15:05   #8
Member
 
Country: Belgium
Town: NIVELLES BELGIUM
Boat name: INDEPENDENT
Make: BWM RAPIER
Length: 9m +
Engine: Ob 2*250/2t yams hpd
MMSI: 235030702
Join Date: Aug 2004
Posts: 885
Optimax as the "default" 2-stroke of choice against a 4-stroke?

what about yams and suks- both >= to than an opti!!!!!!!!!!!!!!!!!

jonathan
__________________
eupa is offline   Reply With Quote
Old 02 August 2006, 15:45   #9
Member
 
Andy Moore's Avatar
 
Country: UK - England
Town: Cowes, Isle of Wight
Boat name: TiLT 2
Make: Avon Adventure 620
Length: 6m +
Engine: Optimax 135
MMSI: 235032203
Join Date: Sep 2005
Posts: 1,639
We chose an OptiMax after intially wanting a Honda 4-stroke.

All I can say is, I am sure we made the right choice. Great acceleration and growl!
__________________
Andy Moore is offline   Reply With Quote
Old 02 August 2006, 17:10   #10
Member
 
Country: UK - Wales
Town: Pembroke
Boat name: Rapscallion
Make: Humber Destroyer 6.0
Length: 5m +
Engine: Yam 150 HPDI
Join Date: Jul 2006
Posts: 70
found some good info on-line

Thanks for all the responses.

Also found this artice after a google search.

It's from Yamaha's website, but is a good bit of independant research. Puts the Opti 150 as a good comparison against other 150hp engines on all fronts.
Interestingly shows it as the second most economical of the engines tested (evin 2S/ honda 4S/ yam 2S & 4S), but the noisiest of all(I guess we knew that!)

Anyone else thinking about the same problem as me - have a look at
http://www.yamaha-motor.at/Images/ve...cm29-45881.pdf

Jon
__________________

__________________
Jon Tallis is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 08:38.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.