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Post by mercurymeteor62 on Sept 3, 2006 20:25:24 GMT -5
OK, After a few months of collecting parts, the 393 is ready to go together. The only thing I haven't decided is whether to stud the engine or just use bolts. I can see the advantage to doing the mains if I planned on using a girdle. But as for the heads with the exception of easy on and off I really cant see the advantage. I mean Torque is Torque if distributed properly Bolts should be fine, Right?  Although its not a real big investment, Holidays are coming and funds are getting short on this project. :'(Any opinions would be greatly appreciated. |
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Post by ca on Sept 4, 2006 1:35:35 GMT -5
studs are stronger from an engineering standpoint and i've seen reports to back it up but i dont have anything to show you for proof(but just look at a Porsche). studs are kooler to gearheads - i wouldnt be concerned about using bolts though = i mean everybody bolts the flywheel on right  |
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Post by STU on Sept 4, 2006 6:34:54 GMT -5
There's nothing wrong with bolts - its the install/torque procedure that is the key. I work on Mercedes, Detroit, Cummins and CAT truck engines. They all use bolts and those engines are around 25:1 on the compression ratio. The Mercedes 4000 engines have 6 individual heads with 4 bolts in each head. If memory serves me right they torque up to 174ftlbs and then get 2 x 90 degree torque turns with a breaker bar. We usually don't re-use head bolts as most new engines use torque to yield bolts.
Studs are nice but expensive. I would use studs if you were going to spray that 393 or put boost through it but on an N/A combo ARP or Milodon bolts will do just fine.
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Although its not a real big investment, Holidays are coming and funds are getting short on this project. :'(Any opinions would be greatly appreciated. 
