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Diesel Engine Repair - B is for Build

Old 10-09-2020, 10:28 AM
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Default Diesel Engine Repair - B is for Build

I follow these guys on YouTube and they appear to be a little out of their element.


I thought maybe the hive mind of THT could help them out a little!

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Old 10-09-2020, 10:36 AM
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A tad but good to see them digging into it.
Old 10-09-2020, 10:40 AM
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Yeah he bought a 30 year old Riva Tropicana haha. I think they don't really know what they are getting into. After he lost the one engine he was talking about maybe putting in a Tesla battery back and motors... LOL

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Old 10-09-2020, 10:47 AM
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I watched those episodes.

His comments at the end and thinking how tight the front of the motor was to those tanks and the thought of having to replace the impeller gave me a headache.

No wonder why he found that shredded impeller, ha ha.
Old 10-09-2020, 11:20 AM
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Originally Posted by Esuomm1 View Post
I watched those episodes.

His comments at the end and thinking how tight the front of the motor was to those tanks and the thought of having to replace the impeller gave me a headache.

No wonder why he found that shredded impeller, ha ha.
I caught these episodes as well and was very surprised at the lack of access to the engines. Not sure that swapping in LS series engines is the best solution but I can certainly see why he would swap those Italian diesels out.
Old 10-09-2020, 11:35 AM
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That guy is an absolute moron. I watched the second episode of the boat saga and he stated literally "IT'S SO WINDY THAT THE MARINA WONT LET US TAKE THE BOAT OUT TO TURN IT AROUND". Yes, he actually said that the marina would not allow him to move his boat. it was also a nice clear sunny day so...


he also put "catch cans" on his engines, you know, the ones that were running fine for 30+ years, that was his "mod" before they took the boat out. He didn't check the oil or anything, but added those catch cans....
Old 10-09-2020, 11:40 AM
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That channel is a great example of what not to do.

Edit I just watched the video. Holy crap is this guy clueless about marine engines.

Last edited by dev; 10-09-2020 at 11:59 AM.
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Old 10-09-2020, 12:02 PM
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Yeah maybe we can give him some advice! I cringed at the thought of running both the good and damaged engine on the way to the haul out location...
Old 10-09-2020, 01:26 PM
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i couldnt watch that. the second the guy said finding the pieces of impellor in the heat exchanger was "bazar" and also that he didnt know what a heat exchanger was i lost it.
Old 10-09-2020, 01:28 PM
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well they are learning as they go i guess! he should have shut it down when he noticed temp rising and oil pressure problems.
Old 10-09-2020, 01:29 PM
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I'm a huge BIFB fan. The guy does not claim to be a professional - he's a self-taught auto modification guy, and he does some crazy stuff. Clearly he does not know about marine engines but he's not a "moron". Put some comments on his YT video and help him out.

Check out his Lamborghini build with the 1000 HP LS engine, it's really cool.
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Old 10-09-2020, 01:33 PM
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Good to know so many were born with the gift of knowing how everything works.
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Georgianbay, mattsmall1972, MUHSFINK07, Trayder, UPPERbaycrabNfish, Usethis and 1 others liked this post. (Show less...)
Old 10-09-2020, 02:32 PM
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Originally Posted by Esuomm1 View Post
Good to know so many were born with the gift of knowing how everything works.
Yeah, isnít it amazing that every poster knew everything from day one?

I never saw his channel before the boat. I watched the videos and yes he is very green to marine engines... however thereís nothing wrong with that at all. Iím glad to see another boat project on YouTube, I canít seem to get enough of them!
Old 10-13-2020, 04:54 PM
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Originally Posted by mattsmall1972 View Post
I'm a huge BIFB fan. The guy does not claim to be a professional - he's a self-taught auto modification guy, and he does some crazy stuff. Clearly he does not know about marine engines but he's not a "moron". Put some comments on his YT video and help him out.

Check out his Lamborghini build with the 1000 HP LS engine, it's really cool.
A lot of people that know the Detroit 903s did comment and several others that have some knowledge did also., but he's basically blowing them off. Collectively between 3 or 4 Detroit mechanics that commented, they have over 100 hours of experience working on them. Several of us found all of the parts he needs, but he's made his decision to put in big block gas engines.
Old 10-13-2020, 06:05 PM
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Originally Posted by IMPLiberty View Post
Yeah, isnít it amazing that every poster knew everything from day one?

I never saw his channel before the boat. I watched the videos and yes he is very green to marine engines... however thereís nothing wrong with that at all. Iím glad to see another boat project on YouTube, I canít seem to get enough of them!
Nobody "knows everything from day one", but you get a point where if you truly understand how things work (or are supposed to work), you can process new info intelligently. Like finding pieces of an impeller in the cooling system. If you don't even understand the basics of how marine engine cooling works, you are probably WAY over your head on a project like his. And then to go on and suggest that you can run an automotive engine as long as you "keep the blowers on", or that you're going to program the ECU to require the blowers run for a minimum amount of time pre-start, just sets you up for all kinds of failures in a marine application.
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Old 10-13-2020, 06:13 PM
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well this could be very interesting... I would think that if they flog the s**t out of the LS engines that they put in (i.e. run them like anyone runs a boat engine...) they could be in for a pricey surprise! Why not try and "restore" it to its original glory with rebuilt engines!?

When he bought this boat I thought in the back of my mind "Boy the maint. bills on such an old boat are going to kill them..."

Old 10-13-2020, 06:30 PM
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Originally Posted by MUHSFINK07 View Post
well this could be very interesting... I would think that if they flog the s**t out of the LS engines that they put in (i.e. run them like anyone runs a boat engine...) they could be in for a pricey surprise! Why not try and "restore" it to its original glory with rebuilt engines!?

When he bought this boat I thought in the back of my mind "Boy the maint. bills on such an old boat are going to kill them..."
From what I remember, basically he had a bunch of excuses. The fact he doesn't know he doesn't know isn't helping.
In a nutshell. They couldn't lift the block off the trailer to get to the pan.
Couldn't get parts for 30 days.
Allegedly every mechanic said 903s were un reliable.
There was some more but those were the highlights.
I wonder if he's priced fuel tanks, trannys and lead? Plus props. He might be spending more for the ancillary gear then he thinks had he rebuilt the 903s.
Old 10-13-2020, 06:32 PM
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Originally Posted by RCL View Post
A lot of people that know the Detroit 903s did comment and several others that have some knowledge did also., but he's basically blowing them off. Collectively between 3 or 4 Detroit mechanics that commented, they have over 100 hours of experience working on them. Several of us found all of the parts he needs, but he's made his decision to put in big block gas engines.
Cummins. The 903 is a Cummins engine, not Detroit.
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Old 10-13-2020, 06:33 PM
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Believe those are Cummins 903 cu in V8's.
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Old 10-13-2020, 06:36 PM
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Originally Posted by RCL View Post
From what I remember, basically he had a bunch of excuses. The fact he doesn't know he doesn't know isn't helping.
In a nutshell. They couldn't lift the block off the trailer to get to the pan.
Couldn't get parts for 30 days.
Allegedly every mechanic said 903s were un reliable.
There was some more but those were the highlights.
I wonder if he's priced fuel tanks, trannys and lead? Plus props. He might be spending more for the ancillary gear then he thinks had he rebuilt the 903s.
I agree and think that IF he actually decides to LS swap it will be such a terrible decision...
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