11m ex 671 removal
Moderators: BeaconMarineBob, Moderator, BeaconMarineDon
11m ex 671 removal
I'm pulling my starboard 450ti has anyone done this? What did you do to get it out?
Re: 11m ex 671 removal
I have not pulled the motor, but did the drives. What is really nice, is you can first remove the helm seat, then remove the entire deck over the motor. Plenty of room to move, work, and see. You having a rebuild?
You should be able to pull off the exhaust manifolds first, then the velvet drives. Then it is just a matter of fuel lines ( have a hose clamp and plug handy), wire harnesses, cooling hoses (if in the water, make sure valve is shut) and sensor plugs etc. Then it is removing the motor supports. Take note: re-installation is the tricky part to re-align the motor with the drive. My manual had a very good description on how to adjust the motor angle to the drive. There are adjustments on the mounts to the stringers. You will need feeler gauges for this. This is not just a bolt on and go system.
And I assume you know about the one motor turns this way, the other motor turns that way. They are not the same.
Good luck, and hope it goes well.
You should be able to pull off the exhaust manifolds first, then the velvet drives. Then it is just a matter of fuel lines ( have a hose clamp and plug handy), wire harnesses, cooling hoses (if in the water, make sure valve is shut) and sensor plugs etc. Then it is removing the motor supports. Take note: re-installation is the tricky part to re-align the motor with the drive. My manual had a very good description on how to adjust the motor angle to the drive. There are adjustments on the mounts to the stringers. You will need feeler gauges for this. This is not just a bolt on and go system.
And I assume you know about the one motor turns this way, the other motor turns that way. They are not the same.
Good luck, and hope it goes well.
1988 Trojan 11 Meter Express
My wife made me do it... Really.....
My wife made me do it... Really.....
Re: 11m ex 671 removal
mine are both rh rotation the twin disc trans has the motor mounts so I need to remove as an assembly. I have concerns about getting it up and out the front of the engine is tucked in under the helm a bit.
- prowlersfish
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Re: 11m ex 671 removal
There is a thread on the removal of the 671 . I have not done one on a Trojan , just a Viking and some work boats . One heavy engine and gear .
I will try and find the post .
I will try and find the post .
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat

- prowlersfish
- 2025 Gold Support
- Posts: 12725
- Joined: Sat Nov 05, 2005 6:56 pm
- Location: Lower Chesapeake Bay ,Va
Re: 11m ex 671 removal
Its on a 13 meter sorry . but here is the link
http://trojanboats.net/wforum/viewtopic.php?f=1&t=8124
FWIW when we did the Viking we left the gear in the boat . Tight squeeze coming out the saloon door . The other engine we did a in frame .( rebuild in boat) Why are you pulling the engine ?
http://trojanboats.net/wforum/viewtopic.php?f=1&t=8124
FWIW when we did the Viking we left the gear in the boat . Tight squeeze coming out the saloon door . The other engine we did a in frame .( rebuild in boat) Why are you pulling the engine ?
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat

Re: 11m ex 671 removal
It is locked up from neglect and I have a replacement.I did get it out you have to take the heat exchanger off then it will swing out just fine,the express is easy to reach in with a telehandler.
- prowlersfish
- 2025 Gold Support
- Posts: 12725
- Joined: Sat Nov 05, 2005 6:56 pm
- Location: Lower Chesapeake Bay ,Va
Re: 11m ex 671 removal
Good deal . The 671 is a very rebuildable engine
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
