273 assessment
#2630935
03/09/19 10:38 PM
03/09/19 10:38 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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My son is trying to ready a 66 Baracuda for the road. It has 128k miles on the 273. Last year when he got it, he got it running off an IV bottle. We have already removed the oil pan, intake and valve covers and cleaned out the gunk as well as replaced the valve seals. Rebuilt the 2V and replaced gaskets. Got it running tonight and allowed it to run on its own and get warm and the blow by on the right bank is very noticeable. Did a compression check and the manual says it should be 135 psi but they checked 90 to 105 and one hole checked 115. The solid lifters are making a little noise. What’s the realistic prognosis for this engine if he wanted to try and get a couple of years out of it? Is it dead? Could a hone and ring job help? Are the cylinders likely to be in need of boring? Could it get better with oil changes and driving?
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: 273 assessment
[Re: dfsmopars]
#2630945
03/09/19 11:26 PM
03/09/19 11:26 PM
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Joined: Aug 2003
Posts: 43,237 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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If it was mine I would try changing the oil after driving it on several long trips, 100+ miles to get the oil hot so it will help it clean the gunk off around the oil rings and then try another compression check and watch the blow by coming out of the breathers with the PVC valve pulled off the valve covers, if it is getting better drive it until you don't like it again.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 273 assessment
[Re: dfsmopars]
#2630990
03/10/19 07:30 AM
03/10/19 07:30 AM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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What are the chances the lifters need adjusting since this is a solid lifer engine? There is some slight ticking but I am not heard a solid lifter engine in years. I know they are not as quiet as hydraulic lifters anyway.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: 273 assessment
[Re: dfsmopars]
#2630999
03/10/19 09:10 AM
03/10/19 09:10 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Valve adjustment can affect compression testing numbers as well.
You did do the test with the engine warmed up?
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: 273 assessment
[Re: Supercuda]
#2631073
03/10/19 12:30 PM
03/10/19 12:30 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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The compression test was while it was warm.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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Re: 273 assessment
[Re: dfsmopars]
#2631078
03/10/19 12:53 PM
03/10/19 12:53 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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My son is trying to ready a 66 Baracuda for the road. . Got it running tonight. I would suggest he drive it & have fun with it & continue to learn from it & in the meantime start building a 360 or better yet a 408 (4" stroker cranks & the KB swap pistons are reasonable). Noone who I have ever spoken with who has done this has regretted going this route.
live every 24 hour block of time like it's your last day on earth
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Re: 273 assessment
[Re: RapidRobert]
#2631125
03/10/19 03:26 PM
03/10/19 03:26 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
OP
top fuel
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OP
top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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My son is trying to ready a 66 Baracuda for the road. . Got it running tonight. I would suggest he drive it & have fun with it & continue to learn from it & in the meantime start building a 360 or better yet a 408 (4" stroker cranks & the KB swap pistons are reasonable). Noone who I have ever spoken with who has done this has regretted going this route. That is exactly the plan. We are hoping to take it on the HRPT long haul this year as it is. Then next year have a 408 ready for it. This isn’t his first rodeo but it is his first Mopar, finally.
‘72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring ‘14 Big Horn, Quad Cab, 4x4, 1500
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