Need help with compression test

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09-30-2006, 10:49 AM

85GTRAGTOP

1st Gear Member

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Location: Western MA

Posts: 86

Need help with compression test

I was told I should do a compression test on my motor before I pull it so I will know if I need to rebuild it.
Can anyone tell me what I should have for compression for my 85 GT?
Also, I don't have the capability of checking it here. Should this be done at the dealer? If I do it myself, what do I need?

Thanks

[IMG]local://upfiles/48432/8E2ED5C7394D4AE3889EDB7F509DE46C.jpg[/IMG]

09-30-2006, 10:50 AM

PRO50SC

The Rogue Mod

Join Date: Feb 2006

Location: Maryland Sucka's!!

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RE: Need help with compression test

What problems are you having?

09-30-2006, 10:52 AM

randy78045

6th Gear Member

Join Date: Jan 2006

Location: Laredo, TEXAS

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RE: Need help with compression test

You can buy a compression tester and do it yourself... but, why are you pulling the engine if not to rebuild it? [:-]

09-30-2006, 10:56 AM

85GTRAGTOP

1st Gear Member

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Join Date: Sep 2006

Location: Western MA

Posts: 86

RE: Need help with compression test

I am pulling the motor because the car is getting repainted. The engine has it's typical small leaks here and there so I planned on replacing as many seals/gaskets as I could while the motor was out. I guess if the compression was low, would I have less power? I don't have anything to compare it to. If it is lower than it is supposed to be, I would like to do what I have to to bring it back to spec (stock).

09-30-2006, 10:58 AM

PRO50SC

The Rogue Mod

Join Date: Feb 2006

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RE: Need help with compression test

Turn off the freaking bold italics!!![&:] How does the motor run? How many miles?

09-30-2006, 10:59 AM

85GTRAGTOP

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Join Date: Sep 2006

Location: Western MA

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RE: Need help with compression test

The engine compartment is covered with rust proofing and I need to remove the motor to clean up the rust proofing before painting.

[IMG]local://upfiles/48432/E3F5A394E4F04E41AFD99AD871AC01C3.jpg[/IMG]

09-30-2006, 11:02 AM

85GTRAGTOP

1st Gear Member

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Join Date: Sep 2006

Location: Western MA

Posts: 86

RE: Need help with compression test

Sorry... The motor seems to run good. No smoking and seems like plenty of power. It does run a little hot but I just got a new fan clutch to see if that will fix that problem.
The car 72,000 miles on it.