First off GJ, I love the way your car launches.
Secondly, thanks for posting this as many people would not spend the time to do this especially with pictures, I take my hat off to you.
I understand and agree with the oiling mods except one of them which needs clarification for me when using hydraulic lifters.
I am having a hard time understanding the cross tube aspect of this modification, especially when blocking off the feed to the #1 main bearing.
Here’s why;
· The tube from the right oil galley is feeding the left oil galley and that oil must make 5 turns to get to the #1 main bearing
· Every turn reduces flow
I just can’t see how this is beneficial, 5 turns (when blocking #1 main from right side) to 1 turn (if not blocking #1 main in stock configuration) and not using the cross tube.
From Moper's post;
Now, if it is true that this cross tube helps prevent starving of #4 main bearing help me understand this as well. Here is my take on this.
· #1 main is NOT blocked off
· The cross tube is fed by the left oil galley
· When the tube feeds the right oil galley it is travelling vertically smashing through the oil in the right galley traveling horizontally
· This smashing of the two different travel paths are causing turbulence
Can I get reasoning being this cross tube mod. Am I missing something here?
I am not questioning your skills or knowledge, just trying to understand the why behind it. I will be doing these mods but am holding off on this cross tube part until further clarification.
A couple of more questions.
· When restricting the oil to the cam bearings we do #1, and #3, what about #5?
· For the cross tube, is it possible to use straight fittings and just bend the line to eliminate two of the corners for better flow since it can be smooth, if there is enough room, just a thought/suggestion.
I appreciate your efforts and eagerly wait for your reply.
Thanks
onig
Well what you are doing when you use the cross tube and block the oil to the #1 main from the right galley is you are not feeding a lifter galley off a main bearing. This directs more oil to the main as it is now the end of the line. In other words none of the oil that is reaching that bearing has to go feed anything else except the rod bearing.
As for that mod doing something for the #4 main I don't see it, but I'll be the first to admit I don't know it all.
Oh and as for restricting oil to the #5 cam bearing, I'm looking into that. Haven't found a way to accomplish that easily yet.
And for the tube, I've seen it done a couple different ways including AN fittings and braided hose. You'll have to experiment with that.
Adult onset Dyslexia I guess, sorry about that. Or it just may have been the Corona talking, lol. When using the crossover tube method you block the oil from the right galley to the #1 main and use the left galley to feed the #1 main.
Well, I am not questioning anybody's ability, practical experiences or knowledge.
I was having a hard time understanding the reason for the cross tube. I didn't quite agree/understand the blocking of the passage that feeds #1 main bearing from the Right lifter galley. Why would you want to block off that passage and feed the #1 main from the Left lifter galley? (don't answer that) I can agree with all the other mods that GJ is doing and I will be doing them very soon as well, hopefully this weekend, if I can find the long bits, I thought I had them when I did my BB, but they are no where to be found.
Anyways, I spoke to a gentleman named Sanborn from Moparchat. He use to do circle track racing for about 30 years running the small blocks 8,000 RPM and higher with no failures to the bottom end in regards to oiling. He knows his SB stuff, he is an engineer with lots of racing experience. He specifically stated NOT to block off the passage TO #1 main, but rather block the passage FROM #1 main to the Left lifter galley. The cross tube is to supply oil to the Left side for the hydraulic lifters only or for light lubrication for the solid lifters if you wanted to. It has nothing to do with feeding the #4 main. If you are running a solid lifter cam you can eliminate the cross tube, splash lube will lube those lifters. That is what I did with my BB and after 5 years no problems (Knock on Wood).
With the other mods that GJ mentioned and blocking off the feed TO the Left side allows for more oil to the mains and rods. This I believe, as it makes more sense to me. By blocking off the Left feed from #1 main, the main does not have to feed anything else besides its self and the one rod bearing allowing for more oil and no lubrication failure. Also when using the cross tube the fitting must not protrude into the oil galley. Test fit and cut some threads off if necessary. Install the fittings where there is the most material, they don't have to be in any particular spot on the oil gallies. I will be RED Loctite-ing them in place.
One other very important point was the oil holes in the bearings. They need to be slotted/elongated to line up with the oil holes in the block. This gives more dwell time for the oil to pass through and getting more. Actually Direct Connection used to sell bearings that had the slotted oil holes for this very reason, until they stopped with the Kit car program.
Circle cars are at high RPM all the time, unlike drag cars that might be there for a second or two. If these mods work for them, they will definitely work for us.
GJ is doing a great job with this post and I hope everybody appreciates his efforts for sharing and showing pics, I know I do. I appologize if I was being a pain in the ***.
So THANK YOU Guitar Jones, I appreciate your efforts. If it wasn't for this post our SB would have gone back together in stock oiling form.
Now get back to posting on here GJ, the rest of us are waiting.
Thanks
onig
Onig - you and I thought the same thing on the block off...
my quote: "The blocking of the # one main feed from the RH galley is a mystery tho. Seems like it would be fine being fed by the RH tubed galley and you'd want to block the feed from the #1 main to the left hand galley. Maybe I just read that wrong or forgot in the time that has lapsed and that was what was said..."
and yours:"He specifically stated NOT to block off the passage TO #1 main, but rather block the passage FROM #1 main to the Left lifter galley. The cross tube is to supply oil to the Left side for the hydraulic lifters only or for light lubrication for the solid lifters if you wanted to. It has nothing to do with feeding the #4 main."
On the #4 bit, as I said. I read it when I was researching it for my buddy who had #4 overheating issues. His block was not tubed and the flow path for #1 was not changed in any way. Then only change was the tube. It fixed his issue, but I'm no engineer and I can't say exactly wh yit helpd...lol. Regardless, no harm done. We're all learning here. My apologies if you read any of my posting here as irritated or aggressive as that's not anything I intended.
Hey moper.
No irritations or aggressiveness taken. Not like some other boards or people that start wars over nothing.
Well I am glad that the #4 issue was solved at your end. I can agree with some of the stuff you said about that cross tube and disagree as well. You might be right, I might be right, you might be wrong, I might be wrong, maybe we are both right or maybe we are both wrong or somewhere in the middle because like you I am not an engineer either.
But that is interesting about your #4 main issue and how the cross tube fixed it. That is something to keep in mind as it works as well, go figure... As long as things work out in the end that is what counts.
Yes we are learning here. I like to take what makes sense to me and apply it or try to remember to use when needed. This thread is very important because a bottom end that fails can be very costly.
Thanks for your input moper! Much appreciated.
onig
