Compression test results!
Thread Starter
|
Cargo Master
Joined: Jun 2010
Posts: 2,771
Likes: 3
From: Louisiana
Compression test results!
7: 360. 8: 290.
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
Posting Guru
Joined: May 2007
Posts: 1,967
Likes: 0
From: Bowling Green, Kentucky
7: 360. 8: 290.
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
https://www.ford-trucks.com/forums/8...n-numbers.html
Thread Starter
|
Cargo Master
Joined: Jun 2010
Posts: 2,771
Likes: 3
From: Louisiana
I did drop a
Lil oil in the cyl and then tested it. 1st time 290, then oil added 350, third try 330, fourth 310, fifth 290 and that's where she stayed. I'm guessing that's a sign of ring wear or breakage. Has anyone else ran an engine like this? How long did it last? Just when I was ready to drop a set of sticks and turbo this is what I find. So some have said just run it and have a back up plan. Would it hurt to put the sticks and turbo on this motor? Then I could just put em in the next motor. Really no idea how long it's been like this! The truck runs the same as it did 25,000 miles ago.
Lil oil in the cyl and then tested it. 1st time 290, then oil added 350, third try 330, fourth 310, fifth 290 and that's where she stayed. I'm guessing that's a sign of ring wear or breakage. Has anyone else ran an engine like this? How long did it last? Just when I was ready to drop a set of sticks and turbo this is what I find. So some have said just run it and have a back up plan. Would it hurt to put the sticks and turbo on this motor? Then I could just put em in the next motor. Really no idea how long it's been like this! The truck runs the same as it did 25,000 miles ago.
Elder User
Joined: Nov 2006
Posts: 799
Likes: 0
From: Mission, BC
you have such a wicked lookin truck. drive it like you stole it, blow up the engine and then throw a new one in it!!
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Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
I did drop a
Lil oil in the cyl and then tested it. 1st time 290, then oil added 350, third try 330, fourth 310, fifth 290 and that's where she stayed. I'm guessing that's a sign of ring wear or breakage. Has anyone else ran an engine like this? How long did it last? Just when I was ready to drop a set of sticks and turbo this is what I find. So some have said just run it and have a back up plan. Would it hurt to put the sticks and turbo on this motor? Then I could just put em in the next motor. Really no idea how long it's been like this! The truck runs the same as it did 25,000 miles ago.
Lil oil in the cyl and then tested it. 1st time 290, then oil added 350, third try 330, fourth 310, fifth 290 and that's where she stayed. I'm guessing that's a sign of ring wear or breakage. Has anyone else ran an engine like this? How long did it last? Just when I was ready to drop a set of sticks and turbo this is what I find. So some have said just run it and have a back up plan. Would it hurt to put the sticks and turbo on this motor? Then I could just put em in the next motor. Really no idea how long it's been like this! The truck runs the same as it did 25,000 miles ago.
I don't know how to check for bad valve seats but perhaps you can try pressurizing the cylinder to about 40 psi or so and see if you can hear where the air is leaking.
Does anyone know what the symptoms are for a toasted exhaust valve and seat?
I am asking because I don't know....but wouldn't a cylinder with excessive blow by show up as a high fuel reading in the oil when analyzed?
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Elder User
Joined: Sep 2007
Posts: 684
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7: 360. 8: 290.
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
5: 360. 6: 360.
3: 355. 4: 340.
1: 350. 2: 360.
So all seems well but number 8! I know this is not good but could it be my lack of power on the top end? I still think something else is up but what to do now, that is the question! Can I throw sticks and a turbo at it and run it like this?
