Alain from Normandy

Cylinder head tightening on 1929 Chrysler roadster E65

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Hi there,

I fit new pistons in cylinder and I'm now ready to close the engine.

However first if all I want to double check something.

Months ago Sasha sent me doc name:"Torque chart for cylinder head and bearing installation".

On it I could find :

  • the stud torques which is 60-70 ft.lbs is that correct?
  • but could really find the head tightening sequence, I am afraid qulity is not good enought for tired eyes ! Do you have it please?
  • should we tight bold in only one sequence or smoothly increase torques of "X" sequences ?
  • Then should double check tight after "X" kilometers ?

 

Thanks to you all.

 

Alain

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Alain,

 

I have drawn the tightening sequence for you hope it will help, the stud torque should be 60- 65 for Chrysler 6 1924-32 models.

It would be best to torque the head in stages say first to 20 then to 40 and finally to 60-65

   

Tightening Saquence Chrysler.jpg

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I had my engine head and head  resurfaced. I then replaced my head studs.

For the investment it is well worth it.

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Alain, I purchased new Ford model A studs (the short ones 3.5" long) for my '28 Chrysler engine build, I only torqued the head down to 55 in 3 stages to a similar pattern to the above.

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Don't forget to torque them again after the engine has been run for a while. The soft studs will stretch and need to be gone over again. I forget how long to wait until you should re torque them, maybe some knows.

 

 

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