Offered a 1100 engine swap for Bandit

[BikeJake]

Which ones go straight in? 

Carbs and rubbers further complications? 

[wraith]

In what ?

[denisd]

2 minutes ago, wraith said:

In what ?

In the bike of course 

[wraith]

1 hour ago, denisd said:

In the bike of course 

I didn't think of that  thought mite be a plane 

[Fazz711]

46 minutes ago, wraith said:

I didn't think of that  thought mite be a plane 

Or a train

[fatblokeonbandit]

9 hours ago, BikeJake said:

Which ones go straight in? 

Carbs and rubbers further complications? 

Everyones a bleedin' comedian today Jake.

But if you mean a GSXR 1100, Yes it will fit, the external dimensions of all the oil cooled motors are the same, b12 and 1100 gsxr and power screen motors drop strainght in.. 600/750's are slightly differant but still fit...

with the correct rubbers any carbs will fit as well

[Dezza]

Slabbies have a slightly smaller diameter lower rear engine mount but that's easy to rectify

[BikeJake]

14 hours ago, fatblokeonbandit said:

Everyones a bleedin' comedian today Jake.

But if you mean a GSXR 1100, Yes it will fit, the external dimensions of all the oil cooled motors are the same, b12 and 1100 gsxr and power screen motors drop strainght in.. 600/750's are slightly differant but still fit...

with the correct rubbers any carbs will fit as well

Sorry I didn't realise how ambiguous it was until I read it myself.. 

I've got a mate whose got a mate whose got a rash, no sorry a late GSXR1100 motor, that I thought might make a better starting point for a high comp road engine. At least starting with decent power adding big bore and Cams and later head work. 

Might make the project go with a bang. 

Gonna go and see the lump 

[Gixer1460]

Late? - as in, has water mixed in or is it still an oil boiler. The water powered one's still go in but would be a PITA having to add all the plumbing!

[Ted M]

If you’re going to do big bore and cams there’s no point in swapping as you can do the same to a B12 engine for the same outcome. It’ll also take a bigger bore (81 mm) before machining crankcases and using big blocks. 

[clivegto]

Best advantage in the real world of the oil cooled 1100 to the 1200 is the cams. Me I would go with the 1200 there newer. 

[Devilman]

12 hours ago, clivegto said:

Best advantage in the real world of the oil cooled 1100 to the 1200 is the cams. Me I would go with the 1200 there newer. 

If I recall the Bandit motor also has the double-bearing on the output shaft, which could make a bit of a difference if shooting for high HP.

I think the "best" motor is a combination of parts from various different ages of GSXR 750, 1100 and Bandit 1200 lol.

1200 cases, gearbox and barrels, 750 Dot Head and Cams, 1052 Clutch and Cam Cover, 1127 Crankshaft 

Edited October 8, 2022 by Devilman

[wraith]

The bandit heads are better for flow and being ported

[Devilman]

25 minutes ago, wraith said:

The bandit heads are better for flow and being ported

Not sure that is true when compared to the dot head, it has a different shaped port floor that gives a different angle onto the back of the valve?
Bandit may be better for port work though, no idea on that

I vaguely seem to recall something about the bandit cam cover not being inter-changeable with the 1052 / 1127 motors, although that was maybe only due to the different camchain guide rather than any physical reason it wouldn't fit ontop of the head?

Edited October 8, 2022 by Devilman

[wraith]

1 minute ago, Devilman said:

Not sure that is true when compared to the dot head, it has a different shaped port floor that gives a different angle onto the back of the valve?
Bandit may be better for port work though, no idea on that

Sorry ment for being flowed/ported over the gsxr1100 heads. 

If you're putting hi comp pistons in no need for a dot head.

[clivegto]

B12 heads flow the best. 

[dupersunc]

1127 gsxr motor is better all day long. The M has the double row bear out put shaft I believe.

Gsxr motors are better made, lots of detail differences to make the internals lighter and stronger. Gearboxes seam far more robust on the gsxr motors.

I'd always start with a gsxr motor personally, given a choice.

[BikeJake]

I'll be honest, the bike has good tyres now, brakes fine, gsxrk8 shock progressive springs 

But the engine is a flat wheezy gasping thing with no punch. 

I love the them of this bike which is why I bought it. I'm just trying to find the shortest route to 150bhp.

 

[wraith]

1216cc big bore, gsxr cams, ported head, rs carbs and a good exhaust and you should be there happily.

[clivegto]

38 minutes ago, BikeJake said:

Im just trying to find the shortest route to 150bhp.

 

Turbo

[Duckndive]

On 10/8/2022 at 4:25 PM, clivegto said:

B12 heads flow the best. 

i was lead to understand the M , N 1100 shim heads were best flowing stock head,s  

[wraith]

9 minutes ago, Duckndive said:

i was lead to understand the M , N 1100 shim heads were best flowing stock head,s  

Like all things tuning wise, every one/tuner has there own opinion 

[Devilman]

On 10/9/2022 at 11:13 AM, dupersunc said:

1127 gsxr motor is better all day long. The M has the double row bear out put shaft I believe.

Gsxr motors are better made, lots of detail differences to make the internals lighter and stronger. Gearboxes seam far more robust on the gsxr motors.

I'd always start with a gsxr motor personally, given a choice.

Almost everything in an 1100M/N gearbox is identical to that inside a Bandit 1200 gearbox, so not sure why you're seeing greater "robustness" from the GSXRs?  Could it just be because Bandit 1200's get abused more in 2nd gear (wheelies) ? 

 

1 hour ago, wraith said:

Like all things tuning wise, every one/tuner has there own opinion 

To a point yes this is true, though some things are objectively better than others  I think most people would agree on the early (non-diaphragm) clutch for example


Agree with @clivegto though, if you want quick easy 150+hp, Turbo does it every time

[clivegto]

7 hours ago, Duckndive said:

i was lead to understand the M , N 1100 shim heads were best flowing stock head,s  

Dave Dunlop flow tested them all against each other with the B12 flowing the best. 

[Duckndive]

2 hours ago, clivegto said:

Dave Dunlop flow tested them all against each other with the B12 flowing the best. 

Oooh right didn't know that loopie had a flow bench