12 replies to this topic

[KTM kid]

Hi guys, whilst my mini is have some welding done, I thought I would grap the chance to upgrade the engine, so what is worth doing on the busa? I have just bought a ported and polished head, with, reground cams to add performance.

Is it worth adding bigger valves, or  save that for turbo or bigger BHP?

I will buy a clutch kit with anti ramping ring, and stronger springs.

Is it worth swapping the counter balance shaft for a alloy one to reduce flywheel weight, and make engine more responsive?

 

Also I am looking for some adjustable cam sprockets for the cams, as it came with non. may be interested in other performance parts for the busa.

 

Cheers Lee

[MotorinFool]

I bought my monte carlo second hand from Birdman a little over a  year ago and I know he had several evolutions with his motor.  He originally had a turbo but had many issues with it, then went with a 1400cc na Busa motor.  He felt that it didnt have enough power and went back to a turbo.  He had the engine built from the ground up with stock displacement, stock cams, heavier valve springs, 9-to-1 forged pistons, Carrillo rods, 450cc injectors and then the turbo was from RCC turbos.  It is the stage 1 kit.  http://www.rccturbos.com/  Its putting down 242hp at the wheels with 9 pounds of boost.  I am very happy with it.

[KTM kid]

Do you have any busa parts spare then?

[Carlos W]

What ECU are you running?

[KTM kid]

standard ECU my friend

[Carlos W]

standard ECU my friend

 

My old man has a 2003 Busa and the ECU restricts the power quite a lot.

 

The previous owner had fitted a performance exhaust, power commander and a few other mods. Dad took them all off, flogged them and it actually ran better. 

 

Get yourself on some of the bike forums to see what can be done to increase power

[KTM kid]

_{do you know of any?}

[Carlos W]

I've text him to find out, but 2 seconds on google gives this

 

http://www.suzukihay...?topic=124432.0

[MotorinFool]

I don't have any spares but I should also add that i'm running a micro squirt ECU from mega squirt.  Pretty awesome because its fully tunable. 

[KTM kid]

looked for forums but all in USA.  and thanks again. I will look up mega spirt ECUs

[KTM kid]

I've text him to find out, but 2 seconds on google gives this

 

http://www.suzukihay...?topic=124432.0

that was very good of you and interesting, cheers, as I am crap on computers. 

[Carlos W]

 

I've text him to find out, but 2 seconds on google gives this

 

http://www.suzukihay...?topic=124432.0

that was very good of you and interesting, cheers, as I am crap on computers. 

 

 

Until it ate it's own starter motor on the way to the Isle of Mann TT his was a bloody fast bike. In fact, after we'd bump started it each time we wanted to use it for a week it was too. 

 

I kind of fell out of love with it by then.

[philly c]

I am just on fitting my new loom from sbd motorsport.seriously well made and supports the standalone ECU which will allow me to give the Busa a real good tune.

I have had the head has flowed,ported and polished as well as upgraded stainless valves after the last head bent every valve know to man!
Other mods to the engine include two stock inlet cams and replacing 3 out of the 4 clutch springs with stiffer springs for more bite.

I am currently fitting the SBD dry sump to the mini as more of a belts and braces job as appose to anything else. Some people recon with thrifty sump everything is pretty much protected all the time as well as possible power gains as the crank isn't fully submersed in excess oil that can be restrictive.