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Picture of big bore B block

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Still not impor

11-21-2005 15:23:23

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Top photo is after boreing. 2nd photo is with two sleeves in it. 3rd. is the new sleeves. It's now time to hot tank the block before installing the sleeves and hard blocking. After a couple weeks of sitting, I will deck the block and bore the sleeves to the final bore..

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Harry J. Case

12-31-2006 16:05:43

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Re: Picture of big bore B block in reply to Still not important, 11-21-2005 15:23:23

Wow. This sounds facinating, why not go for the 4 1/8 in. bore while you"re doing it?

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Harry J. Case

12-31-2006 16:03:59

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Re: Picture of big bore B block in reply to Still not important, 11-21-2005 15:23:23

Wow. This sounds facinating, why not go for the 4 1/8 in. bore while you"re doing it?

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11-25-2005 11:51:14

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Re: Picture of big bore B block in reply to Still not important, 11-21-2005 15:23:23

I PULL A C ALLIS WITH A 180CID MOTOR 45 HP 2700LB
UP TO 4200 LB. HOW MANY CID " WILL YOUR MOTOR BE.
WHAT STROKE WILL YOU USE AND RODS.
THANK IN ADVANCE.

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payne

11-21-2005 20:59:22

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Re: Picture of big bore B block in reply to Still not important, 11-21-2005 15:23:23

Where is your o-ring on the bottom of your new sleeve to seal your water jacket.

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XXOOXX

11-22-2005 05:42:45

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Re: Picture of big bore B block in reply to payne, 11-21-2005 20:59:22

silicone and hard block is what you use. This tractor won't see a plow. It works great if it is done right (mainly clean)..

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Dick L

11-22-2005 06:56:00

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Re: Picture of big bore B block in reply to XXOOXX, 11-22-2005 05:42:45

Being a Plastic injection mold builder, I have thought of getting a block bored and fitted for sleeves as you show in the pictures and taking the block to a foundry and filling the water jacket with aluminum and drilling the aluminum for bubblers. We cool small and odd shaped inserts like that in our plastic molds. I use tie bolts to make sure the block does not split at the bottom and put in an inch of expandable cement to seal the sleeves. The sleeves then have to be rebored/ honed as the cement pinches the sleeves smaller. You method should hold things together. It does sound like you are planning on running some water in the block. I know some fill the block to the top and run no water at all. Some of those engines will blow in a pull off. They take time to cool.

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XXOOXX

11-22-2005 10:01:12

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Re: Picture of big bore B block in reply to Dick L, 11-22-2005 06:56:00

I have had requests that I fill blocks full of aluminum. I do some sand casting, but have yet to fill one with it. If cleaned well, I have found that 100% silicone works good. My biggest scare is that the two center sleeves are to close to tie the sides of the block together. Another good thing to remember is to fill the block with silicone between the sleeves at the bottom. That way if it does crack, you will be covered. The sleeves are into the block on both sides, so the only place water will past by them is at the top inch of the sleeve, just under the deck. I will fill it to there, as I don't think the water would flow good below that point.

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Dick L

11-21-2005 17:42:19

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Re: Picture of big bore B block in reply to Still not important, 11-21-2005 15:23:23

How are you going to deal with the head bolts? I have gone to 1/2" to gain torque foot pounds over the standard 7/16" head bolts.

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XXOOXX

11-21-2005 18:21:57

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Re: Picture of big bore B block in reply to Dick L, 11-21-2005 17:42:19

I will be running 7/16" studs. The bore did not get into the bolt holes, only the counter bores. The sleeves will be notched to clear the bolts.

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Charles McNelly III

11-21-2005 18:52:12

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Re: Picture of big bore B block in reply to XXOOXX, 11-21-2005 18:21:57

What size of piston will you be running when your finished? Do you think it will leak? What will you do if it leaks after you concrete the block? After fixing up the motor, how are you going to keep traction on the ground? Just looking at the block, I'd say Hang on! :)

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XXOOXX

11-22-2005 05:51:57

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Re: Picture of big bore B block in reply to Charles McNelly III, 11-21-2005 18:52:12

I plan to use Dodge 318 pistons with a 3.910 stock bore. If it does leak, it will be very minor and some good block sealer will take care of that. I use hard block designed for that purpose and I don't recomend concrete, portland cement, or anything else like that. I plan to run 13.6 x 38" inch tires, so hooking is not the problem, breaking parts is. I also will not be running a head gasket, just fire rings around the cylinders and o-rings around the water/push rod ports.

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mf440

11-22-2005 10:02:48

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Re: Picture of big bore B block in reply to XXOOXX, 11-22-2005 05:51:57

Thanks for posting the pictures. I think we may start looking for the parts to build one like it soon. Right now we are working on a 160ci motor for an "RC". It has a little lower gear for the taller tires, and still keep it under 3mph. Thanks agian.

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TxAllisMan

12-11-2006 03:00:34

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Re: Picture of big bore B block in reply to mf440, 11-22-2005 10:02:48

Did you ever finish this block?

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