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Oil pressure?
Posted: Sat Sep 07, 2013 10:54 pm
by mrb1
What oil pressure should I expect to see on a Starion 4G63 single cam engine? Like cold and hot, I do realize the grade of oil has some effect.
Posted: Mon Sep 09, 2013 11:50 am
by enthuzed
80-100 psi cold & 60-80 psi hot, both at idle Mark
Posted: Mon Sep 09, 2013 8:48 pm
by Lummy
Yep, by "text book" standards, those figures are ridiculously high, but the 4G63 is known for high oil pressures. I don't quite have the figures listed above, but not far off them either. It's just the way these engines are.
A general rule of thumb is 10psi per 1000rpm, so you can see that the 4G63 is WAY above the "rule".
Posted: Tue Sep 10, 2013 12:04 am
by enthuzed
Yes it is such, and that's with things like:
Standard engine including balance shafts
Standard head bolts (not oversized ARP ones)
Standard spec oil, a quality 25w50 brew.
Posted: Tue Sep 10, 2013 7:43 am
by ProZac
Isn't 25w50 a little thick for our motors?
Posted: Tue Sep 10, 2013 9:20 am
by enthuzed
Sorry I meant 20w50. Seeing if anyone is paying attention :wink:
Posted: Tue Sep 10, 2013 5:57 pm
by Lummy
I've always used 15/50 in my built 4G63 TC
Posted: Sun Sep 22, 2013 8:07 am
by mrb1
Thanks for the info.