“The 6.9” project thread

Laine D

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Where did you get your carpet from? I tried both hump variations from LMC and both sucked fitment wise on bricknose
I don’t remember, it was a long time ago. I’ll look once I get home, I still have the box. Im not stoked about the fitment but the only real issue is where the hump comes down on the drivers side, about where the seat mounts. It’s really baggy. I hope it settles a little after it gets all hot and stuff. It sucks because I love the black carpet.
 

hacked89

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I don’t remember, it was a long time ago. I’ll look once I get home, I still have the box. Im not stoked about the fitment but the only real issue is where the hump comes down on the drivers side, about where the seat mounts. It’s really baggy. I hope it settles a little after it gets all hot and stuff. It sucks because I love the black carpet.
Yep same thing
 

Laine D

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Got the motor up on a stand. Gonna pull the pan and valve covers off to make sure it didn’t hurt anything turning over with no oil. My memory is a bit fuzzy but I know that I left it in gear when it was towed backwards about a quarter mile.

My predicament. I have than 93 turbo engine. It ran really good. I was going to just swap straight it in here. A while ago I pulled the heads off and found that some of the pistons had some small cracks forming from starting fluid or just high heat. I’m leaning towards starting fluid. Anyways. It needs pistons before I do anything with it.

Should I just throw new rings/pistons and give it a quick hone. Then put it back together with studs and everything? And then get this 6.9 running and sell the 6.9 engine? I think now is probably the best time. I don’t feel like doing a huge rebuild on that 7.3 and it ran perfectly fine before hand. What do you guys think.
 

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hacked89

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Got the motor up on a stand. Gonna pull the pan and valve covers off to make sure it didn’t hurt anything turning over with no oil. My memory is a bit fuzzy but I know that I left it in gear when it was towed backwards about a quarter mile.

My predicament. I have than 93 turbo engine. It ran really good. I was going to just swap straight it in here. A while ago I pulled the heads off and found that some of the pistons had some small cracks forming from starting fluid or just high heat. I’m leaning towards starting fluid. Anyways. It needs pistons before I do anything with it.

Should I just throw new rings/pistons and give it a quick hone. Then put it back together with studs and everything? And then get this 6.9 running and sell the 6.9 engine? I think now is probably the best time. I don’t feel like doing a huge rebuild on that 7.3 and it ran perfectly fine before hand. What do you guys think.
7.3 time
 

IDIBRONCO

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Should I just throw new rings/pistons and give it a quick hone. Then put it back together with studs and everything? And then get this 6.9 running and sell the 6.9 engine? I think now is probably the best time. I don’t feel like doing a huge rebuild on that 7.3 and it ran perfectly fine before hand. What do you guys think.
It's really up to you, but here's how I see it. I think that, in the future, you'll probably want to try to get more power out of the engine than it currently has (had?) now. I know you were happy with the way that it ran with the bigger turbo on it. It's only a guess, but if you do decide to go for more power in the future, you'll be kicking yourself for not installing the 7.3 when you had the chance. I've said it before and I'll say it again. Take your time and build the truck that you REALLY want. Not just what will get you driving it the quickest. You've already done so much upgrading to the rolling chassis, it would be a shame to throw in an engine that you will want to replace in a couple of years.
Before you decide to hone and put new pistons in, make sure that there's not too much wear in the cylinders. If there is, that may make you change course and run the 6.9 for now and build the 7.3 up for future use. Of course you want to use studs too.
Probably so.
 

Laine D

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I don’t think this had anything to do with towing it in gear. I think this happened a while ago. All the other bearings look great. The crank doesn’t have any marks
 

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Rdnck84_03

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That spot in the center almost looks like it has set with water between the crank and bearing.
Which position did that one come from?

James
 

Nero

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Usually that type of damage we refer to as 'cold start damage' where someone revs up an engine too much while stone cold.
Can you feel any of the grooves or is it all bearing wipe?
 

Laine D

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Usually that type of damage we refer to as 'cold start damage' where someone revs up an engine too much while stone cold.
Can you feel any of the grooves or is it all bearing wipe?
Really? That’s interesting. I always thought cold start damage would be regular scoring. The rest is wipe.
 

Nero

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Yeah it's usually from older engines that have slow building oil pumps. I wouldn't worry about it, the engines I've seen do it usually lasted 400k before needing rebuilt.
 

Laine D

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Yeah it's usually from older engines that have slow building oil pumps. I wouldn't worry about it, the engines I've seen do it usually lasted 400k before needing rebuilt.
I didn’t take the main cap under the oil pump off because I was lazy. Decided to go take it off too. I think this is bad… lol
 

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Nero

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Yep, time for some new bearings since you're in there.
 

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