SO with some down time while the cops run there hills safety blitz and the idiot bike race is on I thought i would get the last few items I want for the bike
first things a set of new tyres, walked out getting the pirelli diablo rosso 2's which look the beans (the guy was pushing me to get the supercorsa's with a 150/60 on the back but I pointed out the rosso 2's would hang on longer then I would and I don't need street legal race tyres)
second is an exhaust, after many 10000's of changing minds I've decided to go with a delkovic slip on (not the 8" short can like I wanted) and ive been looking at jetting charts all day
now if my stock jets are
Pilot 17.5
Mid Main 60
Main 127.5
would I be right in going to
pilot 20 to compensate for the K&N air filter without restriction
Mid Main 62.5 because i already have a suspected lean surge between closed and 1/4 throttle
Main 132.5 to compensate for the exhaust and it only being a slip on
have I gone to far or not far enough? all these numbers have just turned into one long jumbled mess
I actually installed a K&N drop-in without the restrictor with a stock exhaust. My bike came stock with 17.5/60/130 jets and I got her running great with 20/60/142.5, 2.5 turns, and 1 washer under the needles.
I'm currently in the midst of doing some upgrades. While I have her apart, I pulled the plugs and they are a light tan; indicating that I'm running just a smidge leaner than ideal mix.
I will say that I get a lot more pull out of the bike with the 142.5 main than I did with a 140 or 145. I initially tried a 62.5 starter (aka mid-main) and had issues with a jerky transition between closed throttle and slight throttle; since it was rich near idle I tried the 17.5 pilot resulting in a loopy idle and still rich, the 60 starter with 20 pilot took care of the richness without inducing a loopy idle.
The best is really to try different jets and see what's best for you. Find the best main for the best WOT pull at high RPM then adjust the other jets and needle position to tune everything else. From my experience, the needle height controls the transition through 6-7K RPM (at WOT), the starter impacts the transition to/from closed throttle, and the pilot (and mixture) control closed throttle idle performance.
dammit this is what I was trying to avoid lol I can see this turning into a massive issue............ has anyone had any luck turning there GS into an injected? lol
best I start looking where to get a full complement of jets in Adelaide (insert smiley face shooting self in head)
Based on the table in the rejetting wiki, I actually guestimated that I'd need 20/62.5/142.5; so I tried the 140 and 145 mains as well and the 142.5 was the sweet spot.
Some people say that with Allen key screws on the float bowl it's possible to change jets without pulling the carbs; for the models with PAIR it'd be easier if that hose is out of the way. I personally haven't tried that yet; but it certainly is fairly easy to change the needle position without pulling the carbs, you just have to pull the tank.
lol if it was possible without taking the carbs off then I'd be jumping into it like no ones business I spose its the hit and miss that's putting me off doing it lol i just don't have the time hahahahaha ill have to ask some more questions and do some research so I don't have to keep ripping them out and changing, try get as close as I can first time
Quote from: TheOzTurkish on January 23, 2014, 09:57:17 PM
lol if it was possible without taking the carbs off then I'd be jumping into it like no ones business I spose its the hit and miss that's putting me off doing it lol i just don't have the time hahahahaha ill have to ask some more questions and do some research so I don't have to keep ripping them out and changing, try get as close as I can first time
I've changed my main jets several times without removing the carbs.It wonnt be any more difficult to change the mid-mains and pilots too.
You will need some special tools though. At the very minimum you will need a sawn off #2 philips screwdriver tip.You MAY be able to undo all the float bowl screws with that and a pair of needle nose pliers(or small vise grips) to pop them loose.If they are too tight then you will have to make one or two right angle screwdrivers.Just bend them and cut off the handle where you think appropriate.A small mirror can help too!
The screws holding the vacuum thing onto the bottom of the float bowl may be too close to the crankcases to get anything into them.I always used pliers on those
All the best!
Quote from: TheOzTurkish on January 23, 2014, 09:57:17 PM
lol if it was possible without taking the carbs off then I'd be jumping into it like no ones business I spose its the hit and miss that's putting me off doing it lol i just don't have the time hahahahaha ill have to ask some more questions and do some research so I don't have to keep ripping them out and changing, try get as close as I can first time
You'll probably have to pull the carbs at first to get all the screws loose and replace them with Allen sockets; then it shouldn't be too hard to use an Allen key to remove the float bowls and a modified Flathead to change jets. I actually modified a Flathead to adjust the mixture screws ;) Then the only think for which you'll have to pull the tank is to change the washers under the needles. That said, with a bit of practice you can pull the carbs, change jets, and have it back together within an hour.
it seems there's more information regarding jetting for full exhaust systems rather then slip on's I'm assuming that's because a slip on is more generic rather then bike specific, so with that in mind I'm going with a full Jardine and the drop in for now.
after many phone calls around tuning and work shops we worked out an easy
pilot 20
mid 62.5
main 142.5
and go from there
cheers for all the thoughts and advice guys it definitely helped
Just a heads up... I'm not sure how available the Jardine full system is... last I had checked, they were STILL down due to a bad merger and parts were stuffed into trailers impossible to sort out. They were still saying that a couple months ago, and jardine parts have been hard to get as a result of this for around a year at least. I had been trying to get a full system Jardine for months, and just finally gave up and went with a different setup entirely. Maybe they are more available in other countries :dunno_black:
- Bboy
Quote from: BockinBboy on January 27, 2014, 07:22:09 AM
Just a heads up... I'm not sure how available the Jardine full system is... last I had checked, they were STILL down due to a bad merger and parts were stuffed into trailers impossible to sort out. They were still saying that a couple months ago, and jardine parts have been hard to get as a result of this for around a year at least. I had been trying to get a full system Jardine for months, and just finally gave up and went with a different setup entirely. Maybe they are more available in other countries :dunno_black:
- Bboy
you gotta be $hitting me seriously??? where do you live man????? if its going to be a head f%$k I'll just get a custom made, i sent them an email..... I'm waiting for a reply now lucky I didn't fork out the $700 straight up.......... it says nothing on there site about it
cheers for the heads up
Live in Illinois... US.
Good you sent an email. Would like to hear if its been 'sorted out' yet or not. I was signed up for several different reseller's automatic emails, so that when they came back in stock I would get an email... haven't gotten one yet. :dunno_black:
- Bboy
Email I received
Good Morning Sam,
Thank you for your interest in our products. System - 18-4615-123-02 the RT-1 Full System for the Suzuki GS500F (2004-2007) is currently on back order. The expected wait time on these to be manufactured is a minimum of 8-10 weeks. I encourage you to sign up for our newsletter on our website where you will be informed of any new product developments or offerings.
so no jardine
Yeah, figured as much... and judging by the similar response in length of time to get parts... it will still take longer than that. As I mentioned its been well over 6 months since and they haven't gotten any 'in stock' and I'm on several email lists.
- BBoy