Re: In-expensive compression gauge, yes/no?
[Re: Gusteve]
#347019
06/15/09 11:15 AM
06/15/09 11:15 AM
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Joined: Jan 2003
Posts: 1,652
Central Ky, area
CHRYCOFAN
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,652
Central Ky, area
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Mine is an old Sears unit that screw in & has the end fitting for both size plugs. The hose also has a standard disconnect in the middle so that my air hose would plug on & you can pump cylinders. Also nice to just screw the hose in & listen for compression when checking for TDC. Sears might still have something like that? Mine's over 20 years old now. Edit.....here's what sears has now, the Actron is what my old one is like. http://www.sears.com/shc/s/search_10153_12605?keyword=compression+tester&x=0&y=0Butch
Last edited by CHRYCOFAN; 06/15/09 11:19 AM.
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Re: In-expensive compression gauge, yes/no?
[Re: CHRYCOFAN]
#347020
06/15/09 11:32 AM
06/15/09 11:32 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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in-expensive? the threaded ones that remember the pressure reading until you re-set them, are only like $15-20 at the local parts store...how cheap are you looking to get?
**Photobucket sucks**
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Re: In-expensive compression gauge, yes/no?
[Re: cudabitten]
#347022
06/15/09 08:35 PM
06/15/09 08:35 PM
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Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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Quote:
Hey CHRYCOFAN,
Thanks for the effort. That looks fine to me. 30 bucks is nothing compared to what I've been spending on this project. What's the purpose of putting air in the disconnected hose?
If you want to do an audible leakdown, you can carefully bring the engine up to TDC on that cylinder, and pressureize it. If it's a few degrees off one way or the other, it will move!!!
If you hear air out the carb, the intake valve is leaking. If you hear air out the exhaust, the exhaust valve is leaking. If you hear air in the radiator, uh-oh. If you hear a lot of air (some is normal) coming out of the breather, the rings are leaking.
You can also do the valve spring removing trick if you dare. Remove the rocker arms, use a socket to pop the keepers (they get jammed on), then pressurize the cylinder and use a tool to compress the spring and retainer and remove the keepers. This can also be done with a section of rope, inserting with the piston down, then rotating the engine so the piston holds the rope up against the valve.
Using air is cleaner and easier, but if a valve drops, you have to pull the head.
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