Cavitation does exist!
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
Cavitation does exist!
I have always maintained the SCA level in the F250 since I got it a bit over three years ago and 35k miles. Apparently someone before me did not. The left front cylinder has perforated through. Maybe that's why it has 60 pounds and its neighbor has 200... So, at least we did not get the new injection system on before discovering this. Unfortunately, we discovered this right before our cross-country move. Now we have a 12k (maybe a bit less) trailer with everything we have loaded up, and no truck to tow it. As much as I love this truck, I'm not sure i want to spend the money putting a rebuilt motor in to it. It is, after all, 23 years old with 182k on it. The other issue is time - winter is rapidly approaching and we need to get the trailer out of the high country before it arrives. I figure it will take the better part of a month to source a motor and get it installed, not to mention getting it broke in before hauling with it. One option is getting a 2000 F350 SC V10/4r100. Waiting to hear which rear end ratio it has (come on 4.30!), but it has less than 100k on it. I would think it would tow as well as my IDI did for my purposes. What do you think?
New User
Joined: Aug 2009
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From: Keizer, Or
I agree. Cavitation could increase pressure, the added coolant and all
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
Aside from the visible pinholes, looks like some ring damage on that cylinder as well. The timing gears are worn more than they should be at this mileage, at least one cam lobe is scored badly, etc. Obviously it was not maintained well before I got it. I just don't know if I want to bother getting a rebuilt motor put in, or just get something else and sell it for scrap.
Tuned
Joined: Jun 2010
Posts: 349
Likes: 33
Odd...from what I've read cavitation may occur at about 150K miles.
In this case 35K with unknown history and roughly another 150K with properly maintained SCA....
In this case 35K with unknown history and roughly another 150K with properly maintained SCA....
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Postmaster
Joined: Aug 2010
Posts: 2,554
Likes: 7
From: Northern Arizona
In your situation I would be looking for a used, running drop-in. I would not trust most rebuilt long blocks that are mass rebuilt. Even if you rebuild it later after you move, a running engine is the cheapest way to get you back on the road and have a better core for rebuilding if you want to go that route. I think the only way to get a truly good rebuild is to do it yourself or have a reputable local shop do the work and show you the progress along the way so you know it's done right. Mass rebuilders do the absolute minimum, they use cheap parts, and gamble that it will last through the warrantee period.
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Joined: Aug 2009
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From: Keizer, Or
Ouch, Sorry to hear. I didn't see your second post when I replied. These engines aren't cheap to rebuild, sleeve all 8 cylinders can cost 800-1200 by its self. If you were closer I would buy it for scrap cost lol. You can part the turbo out on here. If you do make sure you get crossover pipe, y-pipe, turbo with hat and oil feed, drain lines, air cleaner and transmission dipstick & tube. Also the zf5 is wort money
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
I am waiting for a quote from R&D for a rebuilt unit. Trying to find any IDI around here is tricky, let alone a running motor I would trust to haul heavy cross-country. I'll either go with a rebuild I trust (Justin), or I will sell her off and buy something else. It really depends on the timeline, as we should already be on the road. I don't have the time or any place to part it out. I hate to let it go, but I refuse to spend good money after bad. I'll strip the good stuff to go on another truck like the aux lights, gauges, custom rear bumper, air bags, etc.
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
...and we have no reputable "local" shops around here that I would use to rebuild a lawnmower motor. Probably have to send it to SLC or Denver if we wanted it done "locally". Living in the middle of nowhere is great, unless you need something.
Postmaster
Joined: Dec 2011
Posts: 3,860
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I'm really hoping Justin can make it work... He's one of very few I trust at this point myself, and it would be interesting to hear how it does.
I'm looking at him for a rebuild of my spare block myself...
I'm looking at him for a rebuild of my spare block myself...
Laughing Gas
Joined: Mar 2016
Posts: 1,105
Likes: 78
ouch .. i'm sorry to hear of your misfortune ..
and you were just set to go too .. dang .. well i have hear good things about the V10 motor .. i'd hate to have to be in your shoes and strip and junk her .. but like you said .. time and all being a factor and needing to haul ..
i hope u can find one .. in time though .. yes a used runner is what i'd swap in there .. if u can find one .. but also justin would no doubt send a good motor ..
btw // a question for Tom .. and anyone who's been around these motors for 10+ years .. has anyone actually seen a 6.9 cavitate ???
i understand block worms like the 7.3 because the thinner walls 'resonate' at a frequency that attracts them .. and that turbos amplify this 'noise' by causing more flex from higher pressure .. worm food
but has anyone actully seen or heard first (or even second) hand a n/a 6.9 with the dreaded block worms ??
and you were just set to go too .. dang .. well i have hear good things about the V10 motor .. i'd hate to have to be in your shoes and strip and junk her .. but like you said .. time and all being a factor and needing to haul ..
i hope u can find one .. in time though .. yes a used runner is what i'd swap in there .. if u can find one .. but also justin would no doubt send a good motor ..
btw // a question for Tom .. and anyone who's been around these motors for 10+ years .. has anyone actually seen a 6.9 cavitate ???
i understand block worms like the 7.3 because the thinner walls 'resonate' at a frequency that attracts them .. and that turbos amplify this 'noise' by causing more flex from higher pressure .. worm food
but has anyone actully seen or heard first (or even second) hand a n/a 6.9 with the dreaded block worms ??
More Turbo
Joined: Feb 2014
Posts: 656
Likes: 1
From: New Braunfels
Leroy, ive never heard of these block worms, honestly ive only seen TJC say once or twice that hes seen 2 7.3 IDI's fail from cavitation other than that ive never seen anything my self, only heard from word of mouth