23 replies to this topic

[mk1leg]

get yourself a new buold half block from mini spares £1100 with 300 surcharge makes it 900 for a new block bargain in my eyes either 1275cc 1293cc 1310cc or 1380

[Magneto]

Aren't the 1380's offset bored? Can you do that if it's already out to 1360?

[DanJones96]

My 1360 will be offet bored too. If its already been bored offset then surely they can just pick up the existing cylinder centres and bore on centre line

[DanJones96]

get yourself a new buold half block from mini spares £1100 with 300 surcharge makes it 900 for a new block bargain in my eyes either 1275cc 1293cc 1310cc or 1380

Ive had a look at this it seams a great deal but unsure on if you just exchange your short engine for it or if they want your gbox, head flywheel clutch aswell?

[GraemeC]

I have a bare 1275 A+ block with caps if you need one 

[racingbob]

i know when i took my 1293 race engine out to 1380 it gave extra 10%

on the dyno in AUS, was using the same head

 

as cooperman says dont know about road engine tho

[Spider]

Aren't the 1380's offset bored? Can you do that if it's already out to 1360?

 

 

My 1360 will be offet bored too. If its already been bored offset then surely they can just pick up the existing cylinder centres and bore on centre line

 

Magneto is on the money here.

 

You don't need to off-set bore to go to 1360 (which I actually suspect is really only a 1330) unless this was specified from the very first over-bore, which wouldn't be a normal machining operation.

 

I'm sure you'd be looking at sleeves, like it or not.

[DanJones96]

I think the best bet is the minispares half engine to be honest

[Magneto]

The reason I asked that question is I have a 60 over 1275 block that needs to be bored again, and my engine machinist said it would have to be sleeved, and then it could not be bored that far out again as the sleeve would be too thin.