v-12 project begins
 

FINALLY GETTING STARTED ON V-12 PROJECT.
FIRST I NEEDED A STAND FOR THIS MONSTER, SO I BUILT ONE:thumbsup:[ATTACH][ATTACH]Attachment 4397[/ATTACH][/ATTACH]

Re: v-12 project begins
 

Mounting engineAttachment 4398

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Re: v-12 project begins
 

The stand is made of 1/4" thick tubing. It is plenty strong, better to be overbuilt than too light. The upright is set back 10 degrees, that is too much. When the block goes to the machine shop, i will cut a notch in the upright and make it about 4 degrees. The cam and crank are perfect, standard no wear. 11 out 12 cylinders no wear will go back standard. #9 piston burned pretty badly, .020 deep spot about 1 inch long at top of cylinder. I think i'll put a sleeve in that hole and keep everything standard. Has anybody put a sleeve in one of these?

My pistons have small dish. I've seen pistons with a small dome, does anyone know what compression the small dome makes? I'm looking for about 9.5 to 10 to one.

Mom was not happy about orange shirt. It was new, oopsAttachment 4402

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Re: v-12 project begins
 

Looks like fun. I got one of mine running yesterday. I lucked out, I bought a couple of V12's about a month ago, when I got home I used a bore scope, and found they had been rebuilt years ago and had never been run, had 20 over pistons fresh valves. I rebuilt some old v12 truck carbs, bendix stromberg ww2. still have some fine tuning to do. Let me know if I can help, I learned a lot thru the process. I also have a lot of parts. Bob

Re: v-12 project begins
 

Awsome place to work. I stopped at some machine shops that did a lot of v12's, and they sleeved a lot of these engines, should not be a problem. Did you have any trouble finding a shop in you area to do that big of block? A lot of the high compression pistons had a raised oval shape, I have several blocks that have them. they are. .030 and .040 over. have not tried getting any out, they are stuck.

Re: v-12 project begins
 

i need to ask a favor, can you take a caliper and measure the dome height of those pistons. length and width would be good to know also. can you send pic showing shape of dome? this will help me figure out compression ratio.

any idea where to get rod and main bearings? thunder v-12 has cam bearings listed.

does anybody make a neoprene rear main seal, i found a rope seal kit

thanks, rick :helpsign:

Re: v-12 project begins
 

I've seen rod and main bearings listed on ebay but of course you'll need 2 V6 sets for the V12. FelPro makes a neoprene main seal.

Re: v-12 project begins
 

On ebay there is a v12 listed from Canada, If you scroll down he has a picture of a high compression piston setting next to a standard dish piston. Also some specs. My pistons look just like those. Bob

Re: v-12 project begins
 

the only rear main seal i can find is fel pro part # BS 40048, it is a rope seal.

Re: v-12 project begins
 

Where have you been looking for a main seal? When I built my 478M the FelPro gasket set came with a neoprene main seal. I think Oreilly Auto parts did have them as well.