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I have the pics here on a PDFs file . If anyone wants the file just pm me with your email.
He feels the slotting of the bearings and the block to be the most important mod.
Not to criticize but you should ask yourself why Sanborn did not front oil his blocks the way you are. In one of his post he says the stock filter adapter is very restrictive. He also likes the $100.00 nascar filter. As was said earlier, you cannot get the results just doing certain parts of the mods. Those nascar ph6 filters are huge, but they flow oil.
My take on the oiling system crossover tube for the small block Post 391.
In looking at Sanborn's front feed, I see too many sharp turns and fittings that are too small. He 'might' have a generous supply going into feed line but the feed line itself is too small. He doesn't show his supply so I don't know what it is. The front feed on mine will come from the short 17/32" galley that feed the rear main....that's as generous as you can get without going to extremes. What I'm getting at is in addition to having to cut a hole in his block, he's probably feeding the front with less oil than I am. I do believe in keeping oil runs as short as possible. Yet another reason I am trying to avoid a remote filter or external lines. I haven't settled on filtration yet...I haven't looked into it fully. I looked and the PH6 filter appears to be a swimming pool filter(?). If it's too large, though, then it becomes one of many great ideas that fall by the wayside...if it doesn't fit 'under the hood' it doesn't make the cut.
SAome of these are Charles Sanborns...other are from Cageman and, maybe, 340king from that orum and others. I think Cageman is a member here. Anyway these pix explain a lot that the text just can't do without photos.
What those pics don't show is what sort of line is feeding the front feed tube once it passes through the rear of the block. I assume he used a -10AN hose but?
Ok I should point out to you that the pictures I sent you are not of how Sanborn would plumb a race block. Those are pictures of how he would plumb a stock block for guys that don't have or cannot afford a race block. His first choice on a race block is to plumb externally. I know you said you do not like external lines, but to use the good stuff(big filter, high flow filter mount,accumulator) you have to use big #12 lines externally.
You have not read the Sanborn thread, he tells you to use a 12an feed hose for the main feed to the rear of the block. He uses an 8an external line to the front as the front is not about volume, but turbulence. To stop the turbulence does not require big volume. The main feed goes back into the block in the oil filter area. That is the best way. Medlock also shows some of Sanborns cooling mods in those pics.
I'm all for big hoses but there's no particular benefit in a -12 line when the oil pump is feeding it through a 1/2" passage. The oil feed is only as good as it's smaller diameter, by and large. So here's the left galley feed line...it's 1/4" tubing which has an ID of .200 (or so) and it should be plenty to feed the left side upper end. The fittings are 1/8"NPT SwageLoks, I did have to 'bore' them out from .187" to .200" to match the tube size.
The 12an lines and the opening of the rear passages in the back of the block and the elimination of the 90 degree filter mount are to reduce pumping losses. What you are saying is that 5 ft of 12 gauge wire is the same as 15 feet of 12 gauge wire. Not true the 15 ft would have voltage drop. It's your motor, but you are questioning oiling mods by a very successful engine builder that routinely revved over 8,000 reliably. I know you do not like external lines, but they were used for a reason. You do not want that crossover line too big, it offsets the benefit of the front feed line, you want some restriction there.
Nice work though, very clean looking.
My plan at present is to not even have a right angle filter mount at all. No external lines, no remote filter. Keep everything as short as possible. That could change if header clearance becomes an issue.
Sanborn and Son I do not like the 90 at the rear bulkhead in some of those pics I drill the fittings trans cooler ones too after going up one size
If you mean the trans cooler lines...I've done a fair amount of testing and experimenting on those. What I found was...the factory sizing is pretty much in the money. I restricted them and measured flow and PSI on the return side (per the factory manual). I also opened them up, did more measuring. What I found was the factory sizes gave enough flow to meet the lube demands of the back of the trans....and if I opened the lines they would flow too much. How did I know it was too much? I could see the line pressure sag when I would shift gears....the pump was not able to keep up with the clutches/servos. It wasn't a lot, but it was there. If I didn't have the gauge I wouldn't have know it. But, you have to figure that sag is not helping the apply. Your results may vary lol!
Duane, where did you get those extended fittings? Are they 3/8 or 1/2NPT?
I followed Sanborns recommendations so they are 1/2 inch galley with 1/2 pipe threads. I got the fittings at my local dirt track supply Bicknell Racing. They are 1/2 inch pipe to 12an and they are steel So you can get them out again. Bicknell racing has a store in the US as well as Canada.
Thanks. I found some made by XRP as well. Then, there are Chinese knock-offs on Ebay, too. I'm leaning towards a remote filter now.
Just make sure they are steel, not aluminum. I understand your hesitation on external lines, but they may even solve header issues For you.
I'm currently leaning toward the external pump, which goes hand in hand with the remote filter. Part of my decision will be based on whether or not I want the ability to run the clutchflite trans. It uses an external pump and I will start to run into problems with too many belts and not enough space. If I just use the Lenco then that eliminates one pump/belt.
LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO LENCO I vote for the LENCO.
lol. Got one stored safely in the master bedroom closet...!
I drilled and tapped the oil ports for 1/2NPT (from 3/8NPT) in preparation for a remote filter and/or external oil pump. I moved the port that comes from the oil pump over a small amount....in case I ever want to use a block mounted filter, there is still room for the adapter to seal. It's close. To plug the 'old' oil filter port, it's the same thread as an -8AN ORB plug...and there is already a nice looking chamfer for the o-ring to seal against....so I'm gonna try using that method.