Basic (essential?) K2 engine mods

Hi!

I've spent some time searching the forums on this and found some info. I'd like to see if I can get a general consensus though...

I've got a Scorpion can fitted to 'me curvy. Taking the baffle out noticably freed things up. I believe that an engine should deliver all of the performance that it can without undue stress, so I'm interested in getting induction at the 'in' end sorted too. So, my questions are;

K&N seems to be a popular choice of replacement filter. Is this the best choice?

What about tank spacers? Are they worthwhile? Where do I get them from? Banditmania I guess?

With more air coming through, do I need to pay attention to the carbs? Rejet? Dyno time? Could get pricey!

Is any of this worth the cost and hassle? I think I'd still like to change the filter to get that nice induction growl sound even if power and performance isn't increased that much. But will it cockup my fuelling?

Some of you fettlers out there must have been here before! What have you done? How did it turn out?

Cheers!

[northwind]

Basically, you can't get much benefit from induction without also adjusting fuelling... And SVs tend to be pretty nicely set up out of the box. Some people are able to run a K&N and can with stock jetting, but not everyone will find it runs quite right. Myself, I reckon that the benefits are small and the expense and potential hassle too great to justify it, by itself... There's pretty easy power gains for the carbed SV in cam work (and not just peak power, but overall usability), and the ignition advancer mod is cheap, reasonably straightforward and nice to have in the real world...

Really though, the smart thing to do is to not **** with it. Do as I say, not as I do

[Viney]

Just dont throw hugs ammounts of money at it. You will spend a lot for not a lot of gain. Bang for buck, a can, filter and jet kit is as much as you would want.

Originally Posted by northwind

but not everyone will find it runs quite right.

Yup, my bike has run like a swine ever since attempting what I thought to be a simple air filter swap and re-jet. And the bike ran sweet as a nut before I started pi$$ing about with it. Just a word of warning mind, I got warned and still went for it. Hopefully the bike will be running ok by spring. Hmmm, I hope.

[northwind]

Originally Posted by Viney

Bang for buck, a can, filter and jet kit is as much as you would want.

Bang for buck, can filter and jet kit's horrendous! £300+ for just a couple of BHP across bits of the range (and removing the dead spot) , plus setup time... To be fair though, most people will want a can for sound anyway so you can take it out of the equation I suppose.

£130 for a pair of cams gives more results. But on the other hand, doesn't look as good

Thanks everyone

On the advice here I'm going to leave things alone! To be honest, my SV is plenty powerful enough for me. Well, right now at least...

I would like to see if I can make my SV sound even fruiter though. Without upsetting fuelling/performance of course. I've been reading this: http://forums.sv650.org/viewtopic.php?t=49634.

What sorts of things can I do to get that induction roar? I know that mods that do nothing but increase noise are a bit, well, chavvy. But What can I say? I just like all the noises!

Northwind, I've got some M8 bolts. How do I use them as tank spacers?

What kind of filter could I fit that would not upset performance?

Thanks again everyone!

[northwind]

Just undo the bolts at the front and stick one or two M8 nuts between the tank and frame on each side You could use pretty much anything that physically fits over the bolts- door stoppers are a popular choice I think, washers, bits of wood, but pretty much everyone has a couple of M8 or similiar nuts lying about so I only mentioned them... You might need longer bolts too. Seems like about 15mm is as much as makes any difference.

The Renegade airkit makes a difference to the sound.... Personally I don't consider it a particularily good filter job but the flat filter does definately boost the induction noise, so if that's what you're after it'd be a much better choice than it is if you're after performance. I've got a spare Renegade filter somewhere and maybe the jets, you could give those a go.

A-ha! So simple! I'll dig my nuts out...

If you dont need your Renegade filter then let me know how much you want for it and I'll gladly take it off your hands Northwind. As for the jets, I've been dissuaded from mucking about with the carbs. Would the Renegade filter necessitate re-jetting? I'm only after more brum-brum sounds now!

Thanks again!

[northwind]

I think it would... Well, maybe, I remember when I fitted it without spacers it was pretty restrictive, probably not far off stock. But then, it'd need as much fannying around to make that work well as to go with the jets, maybe. Not too sure. If you want, though, I can send it over and if it works, you can buy it, if it doesn't you can send it back. It's just sat on a shelf the now so it's not like it'll be a problem. It'll be cheap either way

Northwind, you are a gent! PM me and let me know what the postage cost is and I'll see you right on that up front.