Jump to content

1277 in bandit liners?


spiderpig

Recommended Posts

Is it possible to do with a safe amount left in the liners? Tried searching but couldn't find an answer. Planning on going as big as i can in a slabby with bandit barrells. Going to be used on the road. APE are saying a big block is highly recommended....

Cheers

Edited by spiderpig
Link to comment

1246 is the largest you can go with B12 liners  (82mm bore) - and 1216 is the most with 1127 liners.  A n 1186 or 1216 with a nicely flowed head will produce more power than a larger motor with a standard or reasonable head - the bottom end would be better  on the big engine though. The standard valve sizes work well on  engines around 1200cc, the further you move away from this the more you'll require to up the valve sizes and alter the cams to get the most from the big engine (gets costly and hotter). Depends what sort of build you're doing ??  Of course a good big engine will produce a lot hp and torque, but more money has to be spent to suit the big capacity.

I settled on 1186 for my bike, would've been a 1216 kit, but the 1186 kit came up at the right money and there's little between them anyway. I did research going big, but the extra costs didn't seem attractive !  Be nice to see a serious engine build though . . .

Link to comment

Cheers. The plan is for a reliable motor, that I can get the most power from without spending crazy money. Have a skimmed, ported and polished dot head with reground cams that came of Rob Beans thunder bike I think, slotted sprockets, 1052 bottom end, RS40s, micron system with a new link pipe, APE tensioner, dyna coils. Looking at the 1246 kits there, same money as the others, and the barrells have to be bored anyway, may as well go for them and the 40s would be better suited. 

Link to comment
1 hour ago, spiderpig said:

Yeah, plan on having the cases bored out, want to go bigger than 1109. Whats the maths behind 1225? I know the slabbies have less stroke (.5mm?) no idea of the maths tho. Its going in a 750j/k frame so should fit i think, if not ill get the tap moved, its a 750wp tank.

For slabby 81mm bore is 1201cc (1216 kit) and 82mm is 1225 (1246 kit). 

Handy to do the maths. Take slingshots capacity and divide by its stoke (59) then muliply by slabby stroke (58) ;)

Edited by Jaydee
Link to comment
5 hours ago, Jaydee said:

For slabby 81mm bore is 1201cc (1216 kit) and 82mm is 1225 (1246 kit). 

Handy to do the maths. Take slingshots capacity and divide by its stoke (59) then muliply by slabby stroke (58) ;)

You dont know if shane wogans place in slane bores out crankcases/cylinders do you?

Link to comment
44 minutes ago, spiderpig said:

You dont know if shane wogans place in slane bores out crankcases/cylinders do you?

No I don't know.  Thought Shane is mates with Jack Frost up in Holeshot so possibly  goes through him(?) Isn't there some crowd near you in Santry that does rebores and tuning. They might be worth a shot. I can find for you. As for boring cases, maybe try Dave Walsh in Bessington. 

Link to comment
  • 4 weeks later...
On 10/29/2016 at 7:26 PM, MeanBean49 said:

My old head? Off my 837 motor? Cant even remember what happened to that engine lol.

Was a really good lump. High comp dot head might be a bit much for an 11 based motor. Standard Dot head puts compression up a fair bit on its own

Yep, thats the one, reground cams as well. Yeah was thinking that, have a set of busa pistons lying around might put to use :D

Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...