bandit 12 big block

[370steve]

whats the biggest bore size i can use without having to screw around with upsetting oil ways/opening up the crank cases?

 

[Diebythereaper]

1246

[370steve]

3 hours ago, Diebythereaper said:

1246

can i do that on stock liners? or is it big block time?

[Jaydee]

2 minutes ago, 370steve said:

can i do that on stock liners? or is it big block time?

Should be okay with bandit 1200 pots. A bandit 12 with a 1246 bore should share the same wall thickness (in its liner) as an 1127 with a 1216 bore.

[Duckndive]

10 minutes ago, 370steve said:

can i do that on stock liners? or is it big block time?

You can do it in a Blandit 12 block...but liners will be thin at the bottom

[370steve]

Just now, Duckndive said:

You can do it in a Blandit 12 block...but liners will be thin at the bottom

wanting a billet block, so might get thicker liners if it dont mean any/too much crank case work!!

 

[Gixer1460]

23 minutes ago, 370steve said:

wanting a billet block, so might get thicker liners if it dont mean any/too much crank case work!!

 

Then there is the possibility of breaking into the oil gallery in the cases - bores bigger than 81mm with corresponding bigger liners tend to use external oil lines and go dry block.

[370steve]

4 minutes ago, Gixer1460 said:

 bigger liners tend to use external oil lines and go dry block.

Any links to info?

[Diebythereaper]

1246 on standard B12 block - Building one myself - Best way to go IMO and saves cost and heat issues with big block

[370steve]

1 minute ago, Diebythereaper said:

1246 on standard B12 block - Building one myself - Best way to go IMO and saves cost and heat issues with big block

what piston kit are you using?

[Diebythereaper]

Wiseco

[370steve]

1 minute ago, Diebythereaper said:

Wiseco

i have found Wossner Forged Race not found wiseco! got a link? are you using different rods?

[Diebythereaper]

JE make them as well - Dont know about a link, bought them from Sir Upperton a good few years ago, he looked after the boring of the block for me and ported the head as well

[Duckndive]

2 hours ago, Diebythereaper said:

1246 on standard B12 block - Building one myself - Best way to go IMO and saves cost and heat issues with big block

Heat Issue on an oil boiler with a big block is negligible compared to air cooled .....

Lees 1340 never had a problem and a certain poster with a silly boosted one seams to get away with it  

[clivegto]

I have a 1340 big block motor with all the oil ways in tact in the crank cases where it's been opened out. 

[clivegto]

Think Warpspeed racing would make you a billet big block, the ones I have are sand cast. 

[370steve]

4 minutes ago, clivegto said:

Think Warpspeed racing would make you a billet big block, the ones I have are sand cast. 

 

I have messaged them, waiting on a reply