Running clearance

[davecara]

Anyone know what it should be offhand? 

Busa pistons and my block is ready for its final bore but I can’t find any info on what running clearance we need

[Gixer1460]

5 hours ago, davecara said:

Anyone know what it should be offhand? 

Busa pistons and my block is ready for its final bore but I can’t find any info on what running clearance we need

Do you have a workshop manual ? It is usually stated in the specs - as long as the piston size is pretty close the same tolerances will apply. I haven't a manual in this PC - if I find it later elsewhere i'll add to the thread. What engine is it - assume GSXR / GSF?

[davecara]

12 minutes ago, Gixer1460 said:

Do you have a workshop manual ? It is usually stated in the specs - as long as the piston size is pretty close the same tolerances will apply. I haven't a manual in this PC - if I find it later elsewhere i'll add to the thread. What engine is it - assume GSXR / GSF?

Yeah sorry, its a B12 engine. Currently being bored to 81mm to accept Busa pistons. The barrels are bored, they just need taking to final size. I wasn't sure if standard bandit clearances would apply or not

 

[Gixer1460]

They will - close enough not to make much difference. If its a turbo, you could add a couple of thousandths.

[kiwi]

IIRC 0.045 - 0.05mm for busa pistons in gsxr barrels. 

[Blower1]

On 5.3.2018 at 11:43 PM, kiwi said:

IIRC 0.045 - 0.05mm for busa pistons in gsxr barrels. 

That´s the clearance what I have been using in my "big blocks".

[davecara]

2 hours ago, Blower1 said:

That´s the clearance what I have been using in my "big blocks".

Its going to 0.050 Ta folks