B block Q...

Max Sr,
No boring here...you guys got my attn in that regard. Anyway , if I understand Jim correctly, this may be a good candidate for OHV yet.
One question tho: some guy miked the babbit mains/rods. He said .010 on both new babbit.
My Q: If machine work/pinning done..would that ruin existing babbit and start over there..what?
 
hardtimes said:
callcoy,
I think that Jim B answered my main concern,i.e.- if I understand Jim properly..and there is NO other problem...this B can be used with an OHV setup. Hmm, that would make it worth saving,eh?
Well, I just went high tech and measured the bore(with ruler). Each hole measures 315/16". How much over is that , if you know?
Click to expand...

Should be .062-50
 
hardtimes said:
Max Sr,
No boring here...you guys got my attn in that regard. Anyway , if I understand Jim correctly, this may be a good candidate for OHV yet.
One question tho: some guy miked the babbit mains/rods. He said .010 on both new babbit.
My Q: If machine work/pinning done..would that ruin existing babbit and start over there..what?
Click to expand...

If you are talking about Peening the babbitt now, it will bust it up. Herm.
 
Your B engine has been converted to full pressure oiling. To do this, one of the requirements is to plug the front hole in the galley. This hole originally fed the dipper tray, and oiling the timing gear was incidental. Do not drill a hole in the new plug, the gears receive plenty of oil just from splash in the crankcase. Your galley looks to have had the holes opened to the mains (good) but I see no restrictors in the cam oiling holes. I would drill & tap and put no more than .040" delivery hole in the restrictor. I would also plug the hole that originally brought oil INTO the galley, and route the oil out of the block thru the original hole that has been opened up to 1/4", and thru a filter and back into the galley via the side cover. This may be difficult as it is a very thin area. The grooves in the babbitt are for pressure oiling to the rods, thru a drilled crank. Check to insure that the center main is feeding both #2 and #3 rod, you may need to connect the 2 grooves? If the crank was drilled correctly you would need only one groove in the center of the center bearing, not a problem though.
 
I just posted a lengthy reply, it didn't stick so will try once more.
Your block has been converted to full pressure oiling, the plug in the front of the galley is needed or else there will be no pressure build up. Do not drill a hole in the plug, the gears will get plenty of oil fro normal crankcase splash.
 
The grooves in the babbitt are to feed oil to the rods, thru a drilled crank. Beavertail cranks were only in early A engines, yours is just a B, not a C crank. Check to see that oil gets to both grooves in the center main, as I suspect the crank wasn't drilled properly and the holes didn't come to the center.
 
Your galley looks to have had the oil feed holes enlarged, that is good. I see no restrictors to the cam bearings, I would meter these holes to no larger than .040". I would also plug the hole that originally brought oil INTO the galley, then route the oil out the stock plug (that seems to have been opened to 1/4", good) thru a filter and back into the galley thru the side cover.
 
Jim Brierley said:
Your galley looks to have had the oil feed holes enlarged, that is good. I see no restrictors to the cam bearings, I would meter these holes to no larger than .040". I would also plug the hole that originally brought oil INTO the galley, then route the oil out the stock plug (that seems to have been opened to 1/4", good) thru a filter and back into the galley thru the side cover.
Click to expand...

so your saying that the 3 holes that feed the cam bearing need to be pluged and driller .04?
tk
 
You must log in or register to reply here.
Back
Top