What a bit of fettling can achieve. - SV650.org

11-05-12, 03:20 PM

Interesting what a bit of fettling to a carby SV can acheive :0)

Jim

TheRamJam · 11-05-12, 03:43 PM

Wow that's an impressive BHP gain!

What did you do

11-05-12, 04:39 PM

A little of this and a little of that ;0)

Basically when the first run was done it had just a ART can fitted and stock everything else.

Now it has K4 inlet cams, stock inlet cams in exhaust, full Micron high level system, 4 deg timing advance key, K&N filter, Mains to 147.5 and lift the needles 1 position, it's still slightly lean on top end but Mark at BSD said leave alone or it will wreck the great fueling on the needles, he advised me of a small modification to make to the air filter trumpet to make the top end slightly richer but will not affect the mid range fueling.

I'm very happy with the result and thanks to Mark at BSD Peterborough, he sure knows his stuff, no wonder he has a good rep on the racing scene :0)

And I tell you I had a couple of runs out before i took in on the rollers and my **** told me it was much much better, it's very responsive and goes very well.

Jim

maviczap · 11-05-12, 04:43 PM

Cool, I'll have to pull my finger out and get my cams installed & the 4 deg timing key

The rest I have

11-05-12, 10:13 PM

Mate its a whole new bike once you put the cams in!

maviczap · 12-05-12, 08:08 AM

I know, I know

12-05-12, 11:26 AM

Impressive gains throughout the rev range. Enjoy!

yorkie_chris · 12-05-12, 11:28 AM

Don't pay too much attention to the numbers, that's a pretty optimistic dyno IMO. But what you will notice is how long the power holds on for towards the top of rev range, does make them feel a fair bit livelier.

12-05-12, 11:52 AM

Quote:

Originally Posted by yorkie_chris

Don't pay too much attention to the numbers, that's a pretty optimistic dyno IMO. But what you will notice is how long the power holds on for towards the top of rev range, does make them feel a fair bit livelier.

Unless the dyno is rigged somehow, surely the percentage gain is still a good indication of power increase. Even if the figures are optimistic.

yorkie_chris · 12-05-12, 06:07 PM

Quote:

Originally Posted by WayneL

Unless the dyno is rigged somehow, surely the percentage gain is still a good indication of power increase. Even if the figures are optimistic.

Yeah that's about the sum of it.

Shape of curve is thing you will feel.

11-05-12, 03:43 PM	#2
TheRamJam Member Mega Poster Join Date: Feb 2009 Location: North East Glasgow, UK Posts: 1,138	Re: What a bit of fettling can acheive Wow that's an impressive BHP gain! What did you do __________________ Previous: Suzuki SV650S K9 - Sold Suzuki GSXR1000 K8 - Wrote Aff Honda Fireblade RR-9 - Sold Yamaha MT 10 - Sold Current Bike: Aprilia Tuono V4 Factory

11-05-12, 04:39 PM	#3
takracing Guest Posts: n/a	Re: What a bit of fettling can acheive A little of this and a little of that ;0) Basically when the first run was done it had just a ART can fitted and stock everything else. Now it has K4 inlet cams, stock inlet cams in exhaust, full Micron high level system, 4 deg timing advance key, K&N filter, Mains to 147.5 and lift the needles 1 position, it's still slightly lean on top end but Mark at BSD said leave alone or it will wreck the great fueling on the needles, he advised me of a small modification to make to the air filter trumpet to make the top end slightly richer but will not affect the mid range fueling. I'm very happy with the result and thanks to Mark at BSD Peterborough, he sure knows his stuff, no wonder he has a good rep on the racing scene :0) And I tell you I had a couple of runs out before i took in on the rollers and my **** told me it was much much better, it's very responsive and goes very well. Jim Last edited by takracing; 11-05-12 at 04:40 PM.

11-05-12, 04:43 PM	#4
maviczap Member Mega Poster Join Date: Mar 2007 Posts: 9,097	Re: What a bit of fettling can acheive Cool, I'll have to pull my finger out and get my cams installed & the 4 deg timing key The rest I have __________________ We're riding out tonight to case the promised land Make everyday count RIP Reeder - Jolly Green Giant and comedy genius

11-05-12, 10:13 PM	#5
Serdna Guest Posts: n/a	Re: What a bit of fettling can acheive Mate its a whole new bike once you put the cams in!

12-05-12, 08:08 AM	#6
maviczap Member Mega Poster Join Date: Mar 2007 Posts: 9,097	Re: What a bit of fettling can achieve. I know, I know __________________ We're riding out tonight to case the promised land Make everyday count RIP Reeder - Jolly Green Giant and comedy genius

12-05-12, 11:26 AM	#7
WayneL Guest Posts: n/a	Impressive gains throughout the rev range. Enjoy!

12-05-12, 11:28 AM	#8
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: What a bit of fettling can achieve. Don't pay too much attention to the numbers, that's a pretty optimistic dyno IMO. But what you will notice is how long the power holds on for towards the top of rev range, does make them feel a fair bit livelier. __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

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