2v block mated to 3v top end?
#1
06-30-2018, 10:50 AM
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2v block mated to 3v top end?
I've got a 2008 f250 with the 6.8 3v in it and the rings are toast and took the cylinders with them... I'm curious if I get a donor with the older 2v engine if the block will bolt up? Is it the same block but the 3v just has more tech in the top end? If not, what's the best route to get mine back on the road without having to dive into the bottom end?
thanks
thanks
#2
06-30-2018, 05:45 PM
#3
06-30-2018, 06:29 PM
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a shop stuck a camera down in the cylinders and it didn't look so good. It was also burning a quart or more of oil every 100 miles when it was running.
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07-01-2018, 01:23 PM
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#7
07-02-2018, 04:25 PM
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#9
07-03-2018, 05:53 AM
Man I can’t stop wondering if it’s really worn out or not. You’re not selling me on the wear. (Not that youre required to sell me...)
how many miles on it?
my v10 has 320,000 miles and I recently put a scope in the cylinder and could still see the factory crosshatch pattern. (I also saw a puddle of coolant, but that doesn’t apply to this conversation of course.)
It seems unlikely that:
1. Your engine is actually worn down that bad
2. A person with a scope could make that observation.
I dont mean to be argumentative. Maybe you’re totally correct. I’m just not seeing enough info to really cement that, based on your posts in this thread.
how many miles on it?
my v10 has 320,000 miles and I recently put a scope in the cylinder and could still see the factory crosshatch pattern. (I also saw a puddle of coolant, but that doesn’t apply to this conversation of course.)
It seems unlikely that:
1. Your engine is actually worn down that bad
2. A person with a scope could make that observation.
I dont mean to be argumentative. Maybe you’re totally correct. I’m just not seeing enough info to really cement that, based on your posts in this thread.
#10
07-03-2018, 05:59 AM
Still seems odd though. What the heck would accelerate ring/cylinder wear like that? Basically 10x faster than everyone else’s V10s.
I wouldnt buy the new engine until removing the old one and finding the whole truth.
You might just find something fixable. Slim and grim chance, but hey it’s better than shipping and a restocking fee on an engine.
Lots of room here here for me to be incorrect; I get that. I just find it super odd. Please keep us (me!) posted what you find.
#11
07-03-2018, 08:00 AM
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Hey im sorry somehow I missed the blow by and spark plug thing. That is rather clear.
Still seems odd though. What the heck would accelerate ring/cylinder wear like that? Basically 10x faster than everyone else’s V10s.
I wouldnt buy the new engine until removing the old one and finding the whole truth.
You might just find something fixable. Slim and grim chance, but hey it’s better than shipping and a restocking fee on an engine.
Lots of room here here for me to be incorrect; I get that. I just find it super odd. Please keep us (me!) posted what you find.
#12
07-03-2018, 07:23 PM
Senior User
I thought it was odd also. 118k on mine.... I think it had a severe pcv issue and just consumed so much oIL that I couldn't keep up with it. Also think the oil starvation caused the timing chain to skip a tooth. Like I said, I won't be totally sure until I tear into it, but I'll make sure to keep you guys in the loop! I'll probably need some help in the process.
The symptoms of my old engine were very much like you described. Burning about a quart every 200 miles and fouling the coolant with oil. I spent months working through and disproving all other possibilities before committing to buying a new engine. I really like this truck and am of the opinion that my money spent on a new engine was well spent. I like the truck even better when I see the prices of newer trucks!
#13
07-04-2018, 06:46 AM
I bought a new engine last year. Old one had 150K on it. So, don't think that all V10's should be able to go 300,000 miles. Good maintenance might get them that far, but stuff breaks, and poor maintenance by people who owned the truck before us will cut the engine's life short.
The symptoms of my old engine were very much like you described. Burning about a quart every 200 miles and fouling the coolant with oil. I spent months working through and disproving all other possibilities before committing to buying a new engine. I really like this truck and am of the opinion that my money spent on a new engine was well spent. I like the truck even better when I see the prices of newer trucks!
The symptoms of my old engine were very much like you described. Burning about a quart every 200 miles and fouling the coolant with oil. I spent months working through and disproving all other possibilities before committing to buying a new engine. I really like this truck and am of the opinion that my money spent on a new engine was well spent. I like the truck even better when I see the prices of newer trucks!
Ive always done oil change about 8-12,000 miles. Ok the flip side it would consume a quart every 1,000, so adding that quart every week was similar to a 1/6th oil change every week.
Ive had the same (probably original) coolant for the entire 210,000 miles I’ve owned it. Same for p/s fluid and trans fluid (though I did a pan drop drain and fill once to change the TFT).
See why im curious how your v10 “is” worn so badly at such a young age?
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