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HP500 Cylinder Head Bolt Torque Spec

 
Old 05-03-2013, 08:42 PM
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Default HP500 Cylinder Head Bolt Torque Spec
What are they? 75? 80? 90?
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Old 05-03-2013, 08:48 PM
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80
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Old 05-03-2013, 08:53 PM
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iron head step 1-4 20,40,60 final 80 then go over them again and again until their all the same..

alunimum head short bolts 65 and the med and long 75..
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Old 05-03-2013, 08:57 PM
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Originally Posted by FIXX
iron head step 1-4 20,40,60 final 80 then go over them again and again until their all the same..

alunimum head short bolts 65 and the med and long 75..
Do they need to be retoqued again after first warm up?
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Old 05-03-2013, 10:03 PM
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I torque them to 75Ft.Lbs with oil under the head of the bolt. I do not re torque them after they leave my shop.
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Old 05-04-2013, 02:24 AM
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Originally Posted by IRWIN
I torque them to 75Ft.Lbs with oil under the head of the bolt. I do not re torque them after they leave my shop.
you know chris nelsen?
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Old 05-04-2013, 05:19 PM
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Originally Posted by FIXX
you know chris nelsen?
Yes I worked for kris Nelson for a few years before starting my own shop Fast Forward Race Engines.
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Old 05-05-2013, 01:28 AM
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Originally Posted by FIXX
iron head step 1-4 20,40,60 final 80 then go over them again and again until their all the same..

.
Thats is what I have done also with the stock heads and head bolts using 30wt oil.

If you are using ARP bolts and/or their thread sealant lube, then the torque specs need to be adjusted to the mfg specs.
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