GSX 1100 katana max cc on standard block

[R1guy]

On 2/12/2017 at 11:03 PM, Gammaboy said:

bandit liners, Busa slugs, skim block by ~3mm, gives you 1360cc.

Nothing like resurrecting an old thread.

Just to clarify, on a 1075 motor:

•bandit liners

•mk2 Busa pistons

•skim the block by 3mm

=1360cc.

Any other mods/issues/precautions to be aware of when doing this?

External oil feeds?

[Blower1]

1 hour ago, R1guy said:

Nothing like resurrecting an old thread.

Just to clarify, on a 1075 motor:

•bandit liners

•mk2 Busa pistons

•skim the block by 3mm

=1360cc.

Any other mods/issues/precautions to be aware of when doing this?

External oil feeds?

Engine block need to bore for bigger liners, fwd cam chain guide need to shorten 3mm, if skimming block from bottom the aft cam chain guide bolt head need to grind down, if using external oil feed the oil feeding on the engine block need to plug as well as in the cylinder head, adjustable camshaft sprockets, when boring stock cyliner block for Bandit or other OC liners can be good idea machine o-ring grooves in the bottom of the liner bores and use o-rings to stop the oil weeping up and out.

[R1guy]

15 minutes ago, Blower1 said:

Engine block need to bore for bigger liners, fwd cam chain guide need to shorten 3mm, if skimming block from bottom the aft cam chain guide bolt head need to grind down, if using external oil feed the oil feeding on the engine block need to plug as well as in the cylinder head, adjustable camshaft sprockets, when boring stock cyliner block for Bandit or other OC liners can be good idea machine o-ring grooves in the bottom of the liner bores and use o-rings to stop the oil weeping up and out.

I’d rather not use external oil feed if not necessary .

Pros and cons of skimming block from top or bottom?

O-rings, good call.

Crank cases won’t need relieving to allow for larger sleeves?

[Blower1]

5 hours ago, R1guy said:

I’d rather not use external oil feed if not necessary .

Pros and cons of skimming block from top or bottom?

O-rings, good call.

Crank cases won’t need relieving to allow for larger sleeves?

Engine block/crankcase need to bore for larger sleeves. Skimming from bottom will leave more material on top where it´s needed.

[cnap504]

An original Suzuki GS 1100 air cooled 4 valve cylinder sleeve has a o.d. of what size?  Is the 1150 o.d. bigger or the same?  Thanks 

[Gammaboy]

Have the block skimmed before the liners go in, skimming the top once they're in is easiest, but gets a bit thin on the liner flanges. Skimming the bottom is a pain in the bollocks once the liners are in.

[Gammaboy]

On 5/8/2022 at 3:53 PM, cnap504 said:

An original Suzuki GS 1100 air cooled 4 valve cylinder sleeve has a o.d. of what size?  Is the 1150 o.d. bigger or the same?  Thanks 

1150 liners are bigger OD (hence the bigger over bores that are available)

[Gixer1460]

13 minutes ago, Gammaboy said:

Have the block skimmed before the liners go in, skimming the top once they're in is easiest, but gets a bit thin on the liner flanges. Skimming the bottom is a pain in the bollocks once the liners are in.

I'm confused? What's the difference except your recommendation is twice as much work? If you skim first you reduce the liner flange recess depth, so liners will protrude - unless you machine the recess as well then you might have to machine the cases to accommodate the 'dropped' liners. Most liner flanges can take a 10 - 20 thou facing cut without drama so why not install and face cut in one operation? Or is this all related to block bottom?

Will 1075 cases accept bigger OD 1135 liners without boring?

[Blower1]

3 hours ago, Gixer1460 said:

I'm confused? What's the difference except your recommendation is twice as much work? If you skim first you reduce the liner flange recess depth, so liners will protrude - unless you machine the recess as well then you might have to machine the cases to accommodate the 'dropped' liners. Most liner flanges can take a 10 - 20 thou facing cut without drama so why not install and face cut in one operation? Or is this all related to block bottom?

Will 1075 cases accept bigger OD 1135 liners without boring?

I think the skimming of the block is needed only when using Bandit 1200 or Hayabusa pistons with AC liners. AC liners are shorter than 1075 or 1135 liners and Bandit & Busa piston deck height are lower than GSX (Busa about 2,5 - 3 mm and Bandit about 2mm)

[Gammaboy]

On 5/18/2022 at 10:44 AM, Gixer1460 said:

I'm confused? What's the difference except your recommendation is twice as much work? If you skim first you reduce the liner flange recess depth, so liners will protrude - unless you machine the recess as well then you might have to machine the cases to accommodate the 'dropped' liners. Most liner flanges can take a 10 - 20 thou facing cut without drama so why not install and face cut in one operation? Or is this all related to block bottom?

Will 1075 cases accept bigger OD 1135 liners without boring?

All the talk of decking is in relation to the bandit liner/1360cc set-up.

Nope, 1075 cases need clearancinh for 1135 liners.

The bandit liners are shorter than the stock ones, so them sitting 3mm lower is not an issue.

If you're skimming 3mm off the flange of the liner, you have about a mm of flange thickness left from memory, which has been shown to be marginal. You have to bore the block for the larger liner flanges anyway, so might as well do it deeper and keep the flange thickness.

[Reinhoud]

On 5/6/2022 at 6:37 PM, R1guy said:

Nothing like resurrecting an old thread.

Just to clarify, on a 1075 motor:

•bandit liners

•mk2 Busa pistons

•skim the block by 3mm

=1360cc.

Any other mods/issues/precautions to be aware of when doing this?

External oil feeds?

You can bore up the holes for the cylinder studs by 1mm, then you don't need external oil feed. You also need to drill the hole in the head till you reach the oil galley to the cams

Don't forget to drill the hole in the headgasket too

[Reinhoud]

On 5/6/2022 at 8:36 PM, Blower1 said:

Engine block need to bore for bigger liners, fwd cam chain guide need to shorten 3mm, if skimming block from bottom the aft cam chain guide bolt head need to grind down, if using external oil feed the oil feeding on the engine block need to plug as well as in the cylinder head, adjustable camshaft sprockets, when boring stock cyliner block for Bandit or other OC liners can be good idea machine o-ring grooves in the bottom of the liner bores and use o-rings to stop the oil weeping up and out.

I took a brush and liquid gasket / gasket maker, and brushed gasket all around the liners, let that dry, and it works perfect.