Compression for a 92 YJ 2.5 - JeepForum.com

 
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post #1 of 5 Old 05-27-2013, 11:09 AM Thread Starter
Dirt_Baller
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1992 YJ Wrangler 
 
Join Date: May 2013
Location: Fort Campbell
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Compression for a 92 YJ 2.5

I just pick this jeep up and have some smoke coming from the tail pipe. I did a compression check today (I am not sure if i did it right). It has 275k on it.

If somebody can help me out and let me know if these look good, I would greatly appreciate it. Below are the compression numbers and this was done dry.

#1-125
#2-122
#3-119
#4-121

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post #2 of 5 Old 05-27-2013, 12:14 PM
Michaelgoesrawr
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1988 YJ Wrangler 
 
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Quote:
Originally Posted by Dirt_Baller
I just pick this jeep up and have some smoke coming from the tail pipe. I did a compression check today (I am not sure if i did it right). It has 275k on it.

If somebody can help me out and let me know if these look good, I would greatly appreciate it. Below are the compression numbers and this was done dry.

#1-125
#2-122
#3-119
#4-121
I'd say that those numbers are fine. They are close enough together not to cause a problem. *note: I'm not an engine builder, I'm just conveying what i think based on what I've read and remember* What is the color of the smoke?

Adopt your pets. Don't shop for them.
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post #3 of 5 Old 05-27-2013, 01:18 PM
jokerchief462
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1989 YJ Wrangler 
 
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The smoke is from old age. Compression on a new engine is 150 for a 2.5L. Your getting some bypass on the rings and some from the valve guides. I would run it until It quits but have plans for a swap or overhaul. Enjoy it it's running.

89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.

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post #4 of 5 Old 05-27-2013, 01:19 PM Thread Starter
Dirt_Baller
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1992 YJ Wrangler 
 
Join Date: May 2013
Location: Fort Campbell
Posts: 6
Thanks for the info. its Whitish/Blueish smoke. I was think of replacing the head and head gasket.
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post #5 of 5 Old 05-27-2013, 01:25 PM Thread Starter
Dirt_Baller
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1992 YJ Wrangler 
 
Join Date: May 2013
Location: Fort Campbell
Posts: 6
Thanks for the info! I hope to drive it for a couple of years before having to anything else to it.

92 YJ 4" RC lift, 2" Shackles, 33" M/T Baja ATZ
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