Quote:
Originally Posted by Ummgawa
Don't need the squirters with forged pistons. My LSA is built on an LS3 block, forged LSA crank, Carillos and Wiseco 10 over forged and coated pistons. I'm running all ARP main rod and crank main caps. I had the heads port matched to my supercharger, snout ported and matched, LS9 cam, LS7 TB, 20% underdrive pulley, upgraded brick and cooling port. Should make 700 easily with the right time.
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Forged pistons is not protection against extended elevated temperatures. They can still undergo a phase transformation and go soft - loosing ring land dimensional stability. This is reason LSA, LS9 and all new LT engines have oil squirters.
Without oil squirters, only means of heat transfer is through ring back to cylinder wall then to cooling system. Oil squirters allow an additional means to remove heat from piston crown. Can see considerable reduction in crown temps, protecting the pistons as well as reducing chamber temps (reducing tendency towards detonation).
Dave