Max BHP from an SV650?

The stock SV crank is engineered to 90hp. As Northwind said, going above that require some serious cash to be thrown at it.

I've done the simple mods of, slip-on pipe, stage 2 jet kit & filter and the '03 inlet cam swap.

My bike has been dynoed with 76hp at the rear, an increase of 25% from where I started. All this was on the same dyno too.

Cost is fairly negligible compared to what some have done and rideability has been maintained.



Specs for the fuelling with the cams are: BMC 205/10R filter, mains 160fr &157.5rr (Mikuni), Needles shimmed on bottom clip (Mikuni).[/img]

[TSM]

Is much work needed to put K3 cams into a K2??? Is it just a swap over or does anything else need to be changed?

Is is just K3 cams or also K4 & K5 ones?

[northwind]

It's pretty straightforward... It's been covered before, but basically you need a pair of K3 intake cams (I'm sure K4 and K5 is the same) and a pair of cam chain tensioner gaskets. Some would replace the cam followers (is that the right word? The thing that the cam actuates against to move hte valve) but I didn't. (the reasoning for this is that like chain and sprockets, you get matched wear on the cam and the, er, things. But it would add a lot to the cost to do this, and tbh I don't consider accelerated wear on the cam to be a concern in an SV engine, since they're good for 100K+ miles no problem.

There's a lot of good writeups out there, and on SV Rider- probably best to go straight to the source rather than get my 3rd-hand chinese whispers version. But £130, one evening in the garage, doesn't get better than that as far as power mods on an SV.