What oil pump to use?
IMO, high volume pump isn't needed with tighter bearing clearances.
High pressure relief spring might be good if running over 7000 rpm.
I'm just looking at this from my general experience and fluid flow.
Here's a general graph of volumetric flow (gal/min) vs. rpm.
This flow into the engine (after the relief valve) with hot oil.
Is there any specific reason this engine will need more volume flowing earlier in the rpm range?
If not, I don't see why a high volume pump is needed. It will increase the load on the tip of the shaft etc. IIRC there is a hardened intermediate gear for the BB. I have one for the LA engine even though I am using a standard volume pump.
There was hot rod magazine article where they showed pump output (both flow and pressure).
All I can find now is Jeff Smiths description. The link goes to the original article and photos; but the charts are not showing, at least for me.
Jeff Smith Technical Questions and Answers - Car Craft Magazine
Also a good threads at moparts.
Of course use breakin oil for break in.
Oil Viscosity vs Bearing Clearance | Unlawfl's Race & Engine Tech | Moparts Forums
and Andy suggests starting with a standard volume pump here:
When to use / not use a high-volume oil pump? | Unlawfl's Race & Engine Tech | Moparts Forums
IMO, high volume pump isn't needed with tighter bearing clearances.
High pressure relief spring might be good if running over 7000 rpm.
I'm just looking at this from my general experience and fluid flow.
Here's a general graph of volumetric flow (gal/min) vs. rpm.
This flow into the engine (after the relief valve) with hot oil.
Is there any specific reason this engine will need more volume flowing earlier in the rpm range?
If not, I don't see why a high volume pump is needed. It will increase the load on the tip of the shaft etc. IIRC there is a hardened intermediate gear for the BB. I have one for the LA engine even though I am using a standard volume pump.
There was hot rod magazine article where they showed pump output (both flow and pressure).
All I can find now is Jeff Smiths description. The link goes to the original article and photos; but the charts are not showing, at least for me.
Jeff Smith Technical Questions and Answers - Car Craft Magazine
Also a good threads at moparts.
Of course use breakin oil for break in.
Oil Viscosity vs Bearing Clearance | Unlawfl's Race & Engine Tech | Moparts Forums
and Andy suggests starting with a standard volume pump here:
When to use / not use a high-volume oil pump? | Unlawfl's Race & Engine Tech | Moparts Forums
