Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

is 75 psi oil pressure too high?

Old 09-09-2014, 02:57 AM
  #21  
Super Hulk Smash
iTrader: (7)
 
JakeFusion's Avatar
 
Join Date: Aug 2004
Location: Pace, FL
Posts: 11,255
Received 137 Likes on 114 Posts

Default

I get 70 hot with a Synergy Ported LS4 pump and 15W50 oil. With 10W30 it's more like 60 hot.
Old 09-09-2014, 10:02 AM
  #22  
Teching In
 
jerrytx's Avatar
 
Join Date: Feb 2010
Posts: 12
Likes: 0
Received 1 Like on 1 Post
Default

My old LS2 with ARE single stage dry sump idled at 40 and went to 80+ at WOT when cold. I would allow the oil to heat up (idling 15 min before going on track) to 140 degrees (15w50 for hot texas racing) and would wait until oil was greater than 185 (and max pressure was 75psi at redline) before hammering on it. Higher than that did not seem safe. My old LS3 with the same dry sump setup behaved exactly the same way. My new L92 will have a high volume pump from Summit with the same external single stage ARE. I didn't need more pump but I am just making sure it is safe.
Old 09-09-2014, 11:19 AM
  #23  
74u
TECH Regular
iTrader: (9)
 
74u's Avatar
 
Join Date: Mar 2013
Location: Rockwall, TX
Posts: 406
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Busted Knuckles
So, just what does a washed-out bearing look like? I'm just curious about how a lubricant can remove metal from a bearing.
I too would like to know. Not disagreeing, just learning.


Friend of mine had a Winnebago w/BBC in it and it showed 80psi at idle. Turned out to be a bad oil pressure sending unit.


Thread Tools
Search this Thread
Quick Reply: is 75 psi oil pressure too high?



All times are GMT -5. The time now is 02:20 AM.