What size oil lines
#1
Registered
Thread Starter
Join Date: Jul 2007
Location: Ft Walton Beach, Florida
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I have a set of Gen 6 engines very very similare to the hp 500 carb version.I'm still running the stock block adapter. I need to replace the oil lines to the remote filter and cooler, can I use #8 aeroquip fittings and lines.I allready know bigger is better, but i have a ton of #8 stuff and would rather not spend the bread for new block adapters fittings and braided hose If it wasn't necessary. Any help would be appreciated.
#2
Registered
![Default](/forums/images/icons/icon1.gif)
I have a set of Gen 6 engines very very similare to the hp 500 carb version.I'm still running the stock block adapter. I need to replace the oil lines to the remote filter and cooler, can I use #8 aeroquip fittings and lines.I allready know bigger is better, but i have a ton of #8 stuff and would rather not spend the bread for new block adapters fittings and braided hose If it wasn't necessary. Any help would be appreciated.
#3
Registered
Join Date: Jul 2008
Location: Darwin, Australia
Posts: 730
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Another vote for AN-12 as a standard. Run the AN-8 for fuel at a minimum. You need the size for oil to ensure it flows at sufficient volume, not just pressure, eslpecially when cold. AN-8 would generate VERY high pressures and never flow nearly enough. Sorry to be the barer of bad news but I found out the hard way and I wouldn't want for you to do the same!
Seriously though, read up on this thread:
Oil Pressure Problems...
Seriously though, read up on this thread:
Oil Pressure Problems...
#4
Platinum Member
![](https://www.offshoreonly.com/forums/images/icons/platinum_member_star.gif)
Join Date: Jul 2008
Location: Little River SC
Posts: 931
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
I have a set of Gen 6 engines very very similare to the hp 500 carb version.I'm still running the stock block adapter. I need to replace the oil lines to the remote filter and cooler, can I use #8 aeroquip fittings and lines.I allready know bigger is better, but i have a ton of #8 stuff and would rather not spend the bread for new block adapters fittings and braided hose If it wasn't necessary. Any help would be appreciated.
http://www.offshoreonly.com/forums/g...-hardware.html
#8
Registered
Join Date: Aug 2005
Location: sint maarten
Posts: 1,491
Likes: 0
Received 0 Likes
on
0 Posts
![Default](/forums/images/icons/icon1.gif)
Another vote for AN-12 as a standard. Run the AN-8 for fuel at a minimum. You need the size for oil to ensure it flows at sufficient volume, not just pressure, eslpecially when cold. AN-8 would generate VERY high pressures and never flow nearly enough. Sorry to be the barer of bad news but I found out the hard way and I wouldn't want for you to do the same!
Seriously though, read up on this thread:
Oil Pressure Problems...
Seriously though, read up on this thread:
Oil Pressure Problems...
there is absolutely nothing technically correct about this information unless the information is coming from the batman and robin comic book version of the fluid dynamics handbook.
a melling oil pump, typical to a big block chevy will max out i.e to say will NOT exceed 6 gal per minute before it cavitates. so thats the number.... 6 gals per minute.
a 5/16 line will move 30 wt oil roughly 5 times that number.
a 3/8 line will move roughly 10 times that number
the presure never changes because the relief valve sees to that. if it didn't the system would hydrolock and the filter would explode.
the factory, and i'm talking about guys with real degrees who actually know what they are doing and aren't talking out their ass use 3/8 lines and they are correct.
the people that are suggesting that -12 lines are an improvement in any sense what so ever under any circumstances don't know their asses from a hole in the ground and it would be really nice if you stopped promoting this voodoo like it was meaningful.
Last edited by stevesxm; 08-24-2009 at 02:13 PM.
#9
Registered
![Default](/forums/images/icons/icon1.gif)
there is absolutely nothing technically correct about this information unless the information is coming from the batman and robin comic book version of the fluid dynamics handbook.
a melling oil pump, typical to a big block chevy will max out i.e to say will NOT exceed 6 gal per minute before it cavitates. so thats the number.... 6 gals per minute.
a 5/16 line will move 30 wt oil roughly 5 times that number.
a 3/8 line will move roughly 10 times that number
the presure never changes because the relief valve sees to that. if it didn't the system would hydrolock and the filter would explode.
the factory, and i'm talking about guys with real degrees who actually know what they are doing and aren't talking out their ass use 3/8 lines and they are correct.
the people that are suggesting that -12 lines are an improvement in any sense what so ever under any circumstances don't know their asses from a hole in the ground and it would be really nice if you stopped promoting this voodoo like it was meaningful.
a melling oil pump, typical to a big block chevy will max out i.e to say will NOT exceed 6 gal per minute before it cavitates. so thats the number.... 6 gals per minute.
a 5/16 line will move 30 wt oil roughly 5 times that number.
a 3/8 line will move roughly 10 times that number
the presure never changes because the relief valve sees to that. if it didn't the system would hydrolock and the filter would explode.
the factory, and i'm talking about guys with real degrees who actually know what they are doing and aren't talking out their ass use 3/8 lines and they are correct.
the people that are suggesting that -12 lines are an improvement in any sense what so ever under any circumstances don't know their asses from a hole in the ground and it would be really nice if you stopped promoting this voodoo like it was meaningful.
#10
![Default](/forums/images/icons/icon1.gif)
Rudd - do you have oil temp gauges? If so, what is your oil temp at cruise, and at WOT? btw.... if you don't have oil temp gauges, it would be a good idea to install them.
Also, what's your oil pressure read at idle, cruise & WOT?
Answers to these questions will make it easier for the members here to help out.
Also, what's your oil pressure read at idle, cruise & WOT?
Answers to these questions will make it easier for the members here to help out.
Last edited by Kidnova; 08-24-2009 at 07:17 PM. Reason: just because