Optimax 135: running in.

[Andy Moore]

Whats the score on running in an Optimax engine?

[codprawn]

The OptiMax does have a programmed 120-minute break-in mode that kicks in above 2,500-RPM IF the engine computer senses enough load. The motor should be run between 3,500 to 4,500 during this break in period. If you just idle around or run the engine too easily the break in minutes will not decrease. Running a propeller with a pitch that is too small can prevent break credit as well.

Just found this that might be of interest.

Generally speaking despite what manufacturers say the longer you run in an engine the better it will last. Having said that you have to be carefull you don't run it too light otherwise you get glazing of the bores etc.

Varying throttle settings often is good - don't keep it running at set rpm - and only very short periods of full throttle and not until you have a few hrs on the clock.

[JIY]

Hi Andy,

My RIB has a 2006 model 200hp Optimax, which has just completed 14 hours. I guess there may be differences for the 135, but my manual states:

For the first hour of operation, allow the engine to warm up for 30-60 seconds.

Run the engine at varied throttle settings, the majority of the time between 3000 and 4500 rpm.

Change engine speed approximately every 2 minutes, avoid continuous operation at idle speed for more than 10 minutes. Shorts burst of full throttle for periods up to 10 seconds are acceptable.

Avoid trimming the outboard up beyoned a vertical trim position during operation.

For the next 3 hours of operation, change the engine speed every 10 minutes.

The engine automatically receives extra oil during the first hours of operation, for most boaters this will be complete in about 10 hours.

Hope this is useful,

Jim

[Andy Moore]

Thanks guys! Very helpful.

[Andy Moore]

Can anyone confirm that the 135 is a V6? I read one review and it said it wasn't.

[hard1]

You better ask Googleprawn - he seems to be the resident Opti expert.....

[hard1]

Mercury OptiMax 135
SPECIFICATIONS
HP @ Prop: 135
kW @ Prop: 101.7
Max RPM (WOT): 5000-5600
Cylinder/Configuration: V-6 (60 degree vee)
Displacement (CID/cc): 153/2507
Bore & Stroke (in): 3.50 x 2.65
Bore & Stroke (mm): 89 x 67
Cooling System:
Water cooled w/thermostat and pressure controlled
Ignition System: PCM 038
Starting: Electric (Turnkey)
Gear Ratio: 2.00:1
Gear Shift: F-N-R
Steering: Remote
Alternator Amp: 60 (belt-driven)
Alternator Watt: 756 (belt-driven)
Trim System: Power trim standard
Exhaust System: Through prop
Lubrication System: Electronic multipoint
Fuel Induction System: 2-Stage Direct Fuel Injection
Shaft Length (inches): 20/25
Shaft Length (mm): 508/635
Dry Weight (lbs.) (Lightest Version model, excludes engine oil, rigging, hardware and propeller):
431
Dry Weight (kg.) (Lightest Version model, excludes engine oil, rigging, hardware and propeller):
195
SmartCraft: Yes
CARB Star Rating: 3
Warranty: 2 + 1
Recommended Oil: Mercury OptiMax/DFI Engine Oil

[Andy Moore]

Thanks.

[bogib]

It is the Verado 135 which is 4 cylinder in line.

Bogi

[Andy Moore]

Originally Posted by bogib

It is the Verado 135 which is 4 cylinder in line.

Bogi

No, the 2-stroke.