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Author Topic:   New 75 / 90 Merc. OptiMax
britishlanding posted 04-17-2003 09:10 AM ET (US)   Profile for britishlanding   Send Email to britishlanding  
Do I do a wait and see with Mercury on this new engine(hate first year stuff) or will it be worth the wait for my 68 Nauset? I was going to buy the 4 stroke 90.
lhg posted 04-17-2003 06:07 PM ET (US)     Profile for lhg    
These new Mercury Optimax's are built on 1/2 of the 3.0 liter 200/225 Optimax/EFI block, so I would assume they should, by now, be pretty good. It seems the 2003 225 Opti's have been trouble free. But they weigh 375# vs the 4-strokes' 386#. So a weight saving is not there. Look for these new Optimax's to show up on the Montauks and Nantuckets.

But I'm betting they will be MUCH better performers than the 4-strokes. My Mercury Dealer, who is also a Yamaha Dealer, has told me these carbed Merc/Yam 75 & 90's are not all that great, with the similar EFI 115's being far superior. He seems to think the 75 & 90 will eventually get EFI, but when?

Right now, if Mercury is your choice, I would go for the Optimax 75/90/115.

90 HP seems to be a heavier threshold on "clean" outboard weights, every single engine, no matter what brand, being at least 25% heavier than the 2 stroke 90's. The lightest seem to be the new Mercury Optimax, or the Evinrude Ficht, then the slightly heavier Merc/Yam 4-strokes, and finally the heaviest Suzuki's and Honda's

britishlanding posted 04-18-2003 09:37 AM ET (US)     Profile for britishlanding  Send Email to britishlanding     
Thanks for the positive response - I totally agree with you. Plus, I've heard the OptiMax is going to be cheaper than the 4banger too.
FISHNFF posted 04-25-2003 03:21 AM ET (US)     Profile for FISHNFF  Send Email to FISHNFF     
Merc's website lists the 115 DFI Opti, but not the 75 or 90. I know they are supposed to be out, but when? I have seen a pic of the Opti 115 3 cylinder. Looks nice. The local Whaler had a chance to get a few 115 Opti's in, but passed, siting perfect reliability and great perormance of the 115 EFI 4S. He's going to sit this one out for a while.


jimh posted 04-25-2003 09:58 PM ET (US)     Profile for jimh  Send Email to jimh     
According to the CEO of Brunswick, the new 75/90/115 engines will be "released" in May 2003.

One great feature of these engines is reduced weight; they weight just a few pounds more than conventional 2-strokes.

dogfish2 posted 04-25-2003 10:53 PM ET (US)     Profile for dogfish2  Send Email to dogfish2     
The information on the Merc Website that introduces the new Opti's lists the 115 hp at only 8 lbs. less than the 115 hp 4 stroke, 378# vs 386#. If Merc uses the same block for their 75, 90, and 115 Opti's, then weight would not be a determining factor between the two types of engines. I would go with proven reliability.

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