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Compression Head Gaskets and Checking Valve to Piston Clearance

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Old Oct 25, 2008 | 11:00 AM
  #1  
CamarosRUS's Avatar
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Compression Head Gaskets and Checking Valve to Piston Clearance

I will be using Fel-Pro 1010's which are a compression gasket (.036" compressed) and need to know if it is suitable to use these to check my valve to piston clearance or if its only designed for one torque sequence.
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Old Oct 25, 2008 | 11:03 AM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Compression Head Gaskets and Checking Valve to Piston Clearance

You don't torque it to check the clearance.
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Old Oct 25, 2008 | 11:22 AM
  #3  
CamarosRUS's Avatar
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Joined: Oct 2001
Posts: 3,155
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Re: Compression Head Gaskets and Checking Valve to Piston Clearance

I have read that but with the compression type gasket, if full torque is not used the gasket will not compress properly leaving incorrect readings. This is probably so minute it wouldn't matter but still something to take into consideration.


Would it hurt the gasket to mock it up and get the head bolts 'tight' (from you answer I can assume no...)

I could always use no gasket and add that in later but I would like to remove all variables.
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Old Oct 25, 2008 | 11:32 AM
  #4  
Apeiron's Avatar
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Joined: Jan 2000
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Compression Head Gaskets and Checking Valve to Piston Clearance

The gasket only compresses a few thousandths, and you're looking for clearance on the order of tenths, it's not a problem.
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