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Bluebell · 08-01-2013, 09:10 PM

LS Juniper, I see the block is tapped and plugged with an extra plug above the oil sender boss (casting lump) Just be sure there is no plug blocking the cross drilling.(inside the horizontal drilling) It would stop oil flowing to your crankshaft.
The Canadian military engines were built like this for its 28,000 Bren carriers, because they ran an external oil cooler. The U.S. supplied engines for Australia's 8000 carriers as well as 1100 for New Zealand's carriers. (all of these were 239c.i.) Along with these many 221's were supplied to the U.K. All these engines had that extra drilling. I don't know how many were produced for local (U.S)applications in this configuration. There were obviously quite a few. The plus is, it allows the fitting of a near full flow filtering system, without serious mods.
Walt has a few clips on you tube about those drillings. Be careful.

08-01-2013, 09:10 PM	#57
Bluebell Senior Member Join Date: Nov 2012 Location: Tauranga, New Zealand Posts: 726	Re: Flathead project LS Juniper, I see the block is tapped and plugged with an extra plug above the oil sender boss (casting lump) Just be sure there is no plug blocking the cross drilling.(inside the horizontal drilling) It would stop oil flowing to your crankshaft. The Canadian military engines were built like this for its 28,000 Bren carriers, because they ran an external oil cooler. The U.S. supplied engines for Australia's 8000 carriers as well as 1100 for New Zealand's carriers. (all of these were 239c.i.) Along with these many 221's were supplied to the U.K. All these engines had that extra drilling. I don't know how many were produced for local (U.S)applications in this configuration. There were obviously quite a few. The plus is, it allows the fitting of a near full flow filtering system, without serious mods. Walt has a few clips on you tube about those drillings. Be careful.