Oil restrictor or don't worry about it
#1
Oil restrictor or don't worry about it
Building my first LT1 for a 96TA. At this point I have just started gathering information and parts. I haven't completly decided on the internals but it will be a 383.
I was wondering, those using a electric water pump with the drive shaft and bearing removed. Did you build a screen restrictor for the bearing hole? I'm thinking the extra hole could cause oil to drain to quickly. Any thoughts..
I was wondering, those using a electric water pump with the drive shaft and bearing removed. Did you build a screen restrictor for the bearing hole? I'm thinking the extra hole could cause oil to drain to quickly. Any thoughts..
#2
Building my first LT1 for a 96TA. At this point I have just started gathering information and parts. I haven't completly decided on the internals but it will be a 383.
I was wondering, those using a electric water pump with the drive shaft and bearing removed. Did you build a screen restrictor for the bearing hole? I'm thinking the extra hole could cause oil to drain to quickly. Any thoughts..
I was wondering, those using a electric water pump with the drive shaft and bearing removed. Did you build a screen restrictor for the bearing hole? I'm thinking the extra hole could cause oil to drain to quickly. Any thoughts..
#3
The hole is high on the front of the front china wall so it's doubtful that much oil actually passes through it when it's open. FWIW, the front block hole where the EWP was on my motor has been open for 6 years. If anything, it provides the timing chain with extra oiling.
#4
you can leave it open it won't hurt anything....infact most high dollar sbc are cleaned up around those two front drain back holes....it allows the oil to return to the pan faster, therefore allowing it to be used again quicker....stupid old-school tricks for ya....
#5
Not that I think you are going all out, but you actually want to control the oil flow to front or rear of the block so it does drain back over all the rotating assembly. If anything you should epoxy/vent tube the windows in the center of the block and make sure your oil goes elsewhere. Of course you would have to test everything to make sure the oil actually doesn't collect in the valley after doing so.
#6
#7
Thanks for the comments. I'm not going all out just want a strong running car. I'd like to at least be able to run high 7's (1/8). I had a 377 in a older model camaro and ran 7.80's. If I could match that I'd be happy.
Trending Topics
#8
As already stated, you do not need any restriction in the oil valley. There is no need to "control" oil drain back in any way. The faster it gets to the pan the better. The rotating assy. is oiled via crank/rod journals and oil escape from those journals. Don't epoxy/vent tube anything. That's utterly retarded.
I too have been running an e-w/p and no w/p drive shaft for the last three years spinning the engine to 7200rpm. It's fine.
I too have been running an e-w/p and no w/p drive shaft for the last three years spinning the engine to 7200rpm. It's fine.
#9
As already stated, you do not need any restriction in the oil valley. There is no need to "control" oil drain back in any way. The faster it gets to the pan the better. The rotating assy. is oiled via crank/rod journals and oil escape from those journals. Don't epoxy/vent tube anything. That's utterly retarded.
I too have been running an e-w/p and no w/p drive shaft for the last three years spinning the engine to 7200rpm. It's fine.
I too have been running an e-w/p and no w/p drive shaft for the last three years spinning the engine to 7200rpm. It's fine.
and SSS is right the rods and mains are pressure oiled from internally in the block they dont depend on splash.......the pistons do depend on splash (unless you've got lube tubes ) but you'll be fine.....
#11
#13
As mentioned above, you want to get the oil back to the pan as quickly as possible. The reason for using screens is to stop broken valvetrain parts from reaching the rotating assembly, etc.
There are a couple of reasons for restricting oil flow. They really don't apply to street motors. Especially with hydraulic lifters.
On a high RPM solid lifter motor it is common practice to put restrictors in the oil passages that feed the lifters. This keeps oil in the pan which ensures that the bottom end has a good oil supply.
It is also common to install plugs or vents in the lifter valley to reduce windage, etc.
#14
Sorry, re-read my post and does should be doesn't. You want to keep the oil to the front or rear of the block so it doesn't drain back over the RA. The rest of my post should still be accurate though.
#15
#16
No. It's not. The SBC oiling system works well the way it is as long as a good windage tray is used. There is absolutely no rhyme or reason why drain back has to be controlled "to the front or rear" on these engines.
#17
******* drama queens on this site, I swear.
#18
Quit trying to make a mountain out of a mole hill. In the first sentence of my post I said, "Not that I think you are going all out." Meaning that the rest of my post was based upon someone who wanted to go all out would want to control the oil flow away from the RA.
******* drama queens on this site, I swear.
******* drama queens on this site, I swear.
If you have no idea what his setup is then why did you...
That is telling me regardless of his setup he should do what you are suggesting.