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Message started by magicfairy on 02/23/06 at 16:18:27

Title: Bike Shop Instructions
Post by magicfairy on 02/23/06 at 16:18:27

I have a 2005 S40 with 3500kms on it. At the next service I plan to get all the mods done to make it backfire less and have more power. I am mechanicaly clueless and can afford to get the bike shop to do the work. So what I need is a list of what I want done to give them.
Based on what I have read here this is the list:

1 New exhaust (will get one made up by a local outfit who do this - Wellington NZ)
2 White space mod, file down to half
3 Carb rejet 152.5
4 Slow mixture screw out 1.5-2 turns
5 K & N Filter

I see some people talk about pilot cap drilling - what does that mean and do I need it?

So what do I tell the bike shop (I have already run the fact that I plan to do mods past them - no problems there) so I don't sound like a complete blonde and get the result I am after.
I know this subject has been discussed to death, but there seem to be some conflicts about what is best, and a lot of the technical talk goes over my head....
Thanks in advance :D

Title: Re: Bike Shop Instructions
Post by Steve530 on 02/23/06 at 16:29:45

The only drilling that I'm aware of is drilling out the plug that covers the idle mixture screw. Since you're going to tell them adjust the idle, that goes without saying.

I think you have it right.

New muffler, remove the white spacer and cut it in half, replaced the main jet with a 152.5, add the K&N filter, adjust the idle mixture for the highest speed, and reset the idle speed with the idle speed screw.

If you plan to use the "drop-in" K&N panel filter, you might also want them to remove the snorkel.

Title: Re: Bike Shop Instructions
Post by USCG Cremeans on 02/23/06 at 16:40:13

i bought a k&n rc-1250 and it fits directly onto the carb where the snorkel was, greg has the same i beleive.. you can buy it at http://shop.knfilters.com/KNShop/Product.aspx?pid=RC-1250

Title: Re: Bike Shop Instructions
Post by SAMM on 02/23/06 at 18:07:33

I think she should stick with the K&N drop in filter... Fits is her original filter box...

Title: Re: Bike Shop Instructions
Post by pgolden on 02/23/06 at 18:36:33

The drop-in is the way to go if someone else is doing the work. Performance International has the Savage drop-in for $35.75 delivered.

Title: Re: Bike Shop Instructions
Post by magicfairy on 02/25/06 at 15:30:15

Thanks guys.
I love this site, best bike site around. None of the usual bull*&it, just a bunch of people that love this bike and want to help each other out.

Title: Re: Bike Shop Instructions
Post by Savage_Rob on 02/25/06 at 23:11:48

I'd only take the spacer to about 2/3 instead of 1/2. The idle mixture has a brass cap covering it in most cases (at least in the USA). This cap has a small pinhole in it and sometimes a dab of white paint on it. You drill it very lightly (to avoid drilling through into the soft brass screw inside) and then twist a sheetmetal screw into the enlarged hole in the cap, grab it with pliers and pull it out.

Title: Re: Bike Shop Instructions
Post by USCG Cremeans on 02/26/06 at 16:55:26

agreed on the drop in, should give almost the same amount of performance correct? i bet the too are really close, the reason i got the pod filter was it was actually cheaper and i like the look.

Title: Re: Bike Shop Instructions
Post by dichotomous on 03/15/06 at 12:40:19

I didnt bother drilling the idle mix plug hole any larger, I just screwed a sheetmetel screw right in there, it made its own hole a little larger, worked great, and my adjustment screw was completely unharmed entirely, I dont see a point in drilling unless you dont have a hole there already

Title: Re: Bike Shop Instructions
Post by Biker_T on 03/23/06 at 18:37:08

Hi Magicfairy

Have you had your modifications done yet? If so, where did you get them done? Were you happy with the bike shop? I too am in Wellington, and have been thinking about doing the same to my bike. Looking forward to your comments.

Regards

Title: Re: Bike Shop Instructions
Post by magicfairy on 03/24/06 at 13:07:28

Hey - Always nice to meet others in the same town with the same bike! What year and colour is your baby?

All happenning this Friday! I am getting the 5k service at the same time. At Wellington Motorcycles where I bought the bike from.
Ended up buying a Jardine exhaust online, along with K&N filter - from www.onlineparts.com. Ill post an update and let you all know how it went.

Title: Re: Bike Shop Instructions
Post by Biker_T on 03/26/06 at 16:08:03

Hi again

Looking forward to your next update on how it went.

I've got a 2003 model - colour black. Bought it new at the beginning of 2004 at Wgtn Motocycles. It's still stock standard and have toured both North & South Island twice on it, and travel to work each day rain, hail or shine (done 23,000 miles) without one single problem. Awesomely reliable bike!

I'm pretty happy with the bike as is (don't have a backfire problem at all - it's all in the throttle control for me) - I cruise happily at to 70m (110ks). I'm loathe to tamper with it in case I upset the applecart, but would dearly love a better sound! I too would have to get the bike shop to do it, so I'm particlarly interested in how you go with it all.

Keep in touch!

Toni

Title: Re: Bike Shop Instructions - UPDATE
Post by magicfairy on 03/31/06 at 22:39:36

GOOD NEWS - BAD NEWS
Had the work done, Jardine pipe, K&N Filter, spacer filed 1/2, 152.5 main jet, idle speed, mixture screw.
I have lots more power, really feels like having another gear. BUT the exhaust is way too loud for me. I had no idea it would be that loud. And although no more backfiring on switching off, nor does it sound like a rifle shot, it is MORE noticeable changing down round town. And a really noticeable going downhill. The mechanics said they did what they could to reduce it but without putting it on the dyno it was hard to get rid of completely on a single banger !!

HELP NEEDED
Questions.
1 Can I just put stock exhaust back on and the leave the rest as is? Is changing one thing at a time is a good start?
2 The backfiring I am getting now is quite a "popping" Could that be related to the pipe, or is it something that should not be happening and needs attention? Because of the loud pipe it is more noticeable.
3 My boyfriend had offered to help put old pipe back on. Is it a realitively straight forward job, will we need some sort of sealant or will it bolt straight on?

I'd really like to keep the extra power but get rid of the noise and backfire. I realise by decreasing air flow that I will lose some power but I don't want to have to go back to everything stock if I can avoid it.

Many thanks.

Title: Re: Bike Shop Instructions
Post by 911radioman on 03/31/06 at 22:55:35

My bet will be that going back to a stock exhaust with your new jetting will make it too rich. Probably need to back your main jet down a size or so.

It is always good to make any changes one at a time, whether you are doing or undoing something. That way you know the last thing you did and can easily undo it if need be.

The popping is pretty normal. My Savage has a MAC pipe on it and it pops as well.

I'm sure others will chime in and give you their take on things as well.

Title: Re: Bike Shop Instructions
Post by azjay on 04/01/06 at 05:44:44

you can go to a longer straight through muffler, to reduce noise. harley has longer mufflers on the hard side bag models: street glide, road glide, etc. i dont know what is available downunder

Title: Re: Bike Shop Instructions
Post by DianeS. on 04/01/06 at 08:27:44

Hi! When I bought my bike, it already had a slash-cut Jardine on it. I too thought it seemed noisy, but the shop guy said it would be safer because people would hear me coming etc. So, in that sense, I'd rather have some noise, and have other drivers aware of my presense. Besides, I don't know that it's any louder than a lot of the other bikes out there(?)

DianeS.

Title: Re: Bike Shop Instructions
Post by magicfairy on 04/05/06 at 13:25:28

Ive had the stock muffler put back on, but left the new jets and spacer filed down. The bike shop adjusted jets etc.
Now the bike is running great. I have only heard one tiny "phut" on decceleration, doesn't backfire at all when I turn it off and the extra power is still there.
Here in NZ we have "boy racer" laws that mean you can get ticketed for having a muffler on a car or bike that is louder than stock. So I really didn't want to attract too much attention with the Jardine. And it was LOUD.
(Anyone after a brand new Jardine exhaust?)
Thanks for the input everyone.