Intake, Fuel, Shock and Exhaust upgrades

[aaronjosephward]

I dropped a solid $240 on motorcycle parts in the past few days and while none of the parts are at my door yet, I'm starting this thread nice and early to document how things progress.
The parts are:

K&N Lunchbox $35
Jets: 20/65/145 $25
SV650 Shock $20
Yoshimura RS-3 Carbon Bolt On $160

The plan is to install the shock first, then do the other mods when I have all of them in my possesion.
The exhaust is a bolt on, and has a 3 bolt pattern. I will be doing exaclty what kml.krk did in this thread http://gstwins.com/gsboard/index.php?topic=37535.0 except with a 3 bolt flange.
Man I'm excited.
This is the pipe
http://www.yoshimura-rd.com/ps-1948-402-rs-3-carbon-bolt-on.aspx
Stay tuned

[aaronjosephward]

Well let the games begin.
Here is a picture of the pipe.


here is what I have in my mind...

cut, rotate and reweld the midpipe as seen where the green circles line up here don't mind the line in the middle thats to place empasis that i won't be rotating the midpipe along the axis where it connects to the headers...


then create a 3 bolt flange and weld it on so the pipe is mounted as shown, maybe rotate a few more degrees counter-cloclwise...


then install the K&N which i received last week...


and rejet the carbs which I'm just waiting on the jets to recieve in the mail
i'll keep you guys posted on how the exhaust pipe is being cut and welded.

[aaronjosephward]

stock with drilled exhaust.
and on reserve fuel. lol. and lots of chain slap. not lol.
so someone do some gear conversions and change mph to rpm, not sure of the ratio...

edit: wow the gs500, according to wikipedia, puts out 47hp stock. 39 hp FTL

[DoD#i]

If all bits (tires, sprockets, etc) are stock, and you are in 6th, 30 is 2350, so 60 is 4700, so 90 is 7100

If in 5th, 30 is 2650

If in 4th, 30 is 3100

Of course, this only gets interesting when you do your mods and post the follow-up. The plot on the gstwin site is effectively non-informative since it's only of a modified bike, with no stock bike plot to compare to. Do you really not have any note on what gear this was run in?

[aaronjosephward]

I'm sorry about the lack of info, but...
the guy running it cut it off at redline, which in this case is about 95mph
so, maybe 3rd gear?
the bike is completely stock, except for drilled exhaust.

[mayhem]

edit: wow the gs500, according to wikipedia, puts out 47hp stock. 39 hp FTL

47 hp at the crank vs. 39 hp at the wheel.  Do you live in Arlington Heights?  I'm not too far, Lake Forest.

[aaronjosephward]

I live in Lombard, down 355.
I was up there for a local event.
check out www.chicagolandsportbikes.com

[aaronjosephward]

Jets are in! Thank you Buddha!
Progress...


Carbs are off, but I'm waiting til tomorrow take everything apart.

[The Buddha]

Ooo the jets are in ... OK I'll save myself the trouble of sending them ... 

And yes that pic, yea carbs are off ... and look pot of gold ... and your bike now makes 150 hp and runs 300 mpg. 

Cool.
Buddha.

[aaronjosephward]

lol carbs are off after i took the pic. the pot of gold is making my house smell like gasoline. and yes i will be dominating busas with my new jets

[The Buddha]

That's not the 1/2 of it ... I mean the GS is not the 1/2 of the busa ... but hey I still trash them, and tell them that their repair bill for last time cost them more than my whole bike and all its repairs did. They usually say ... mine is much faster ...
Cool.
Buddha.

[aaronjosephward]

jets are installed.
hopefully i didn't lose any o-rings or parts while i was bashing on the float bowl screws with a impact screwdriver. (cross fingers). opened it up and didn't look too dirty so i will save carb cleaning for another day.
will hook it up tonight and see how it runs! yippie!





got the k&n on it too. its so pretty.

[kml.krk]

good luck man!
I'm glad that my pipe inspired you   
cheers
Kamel

[plurpimpin]

if you don't mind me asking where'd you get the pipe for so cheap?

[pronator]

if you don't mind me asking where'd you get the pipe for so cheap?

+1 

[aaronjosephward]

talk about throttle response! WAH WAH WEE WAH!

Sorry
I put it all back together just now and APPARENTLY I put everything back together correctly ON THE FIRST TRY which is a big first for me. lol.
Rode it around the block and man, wow, the K&N sounds so awesome and i blip the throttle and NO hesitation at all.

I didn't touch the 'mixture screw' but i did set the idle back down to 1200.

Man I'm so excited. If i can find the videocamera I'll post a vid of how it sounds.

PS I got it off ebay, http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&sspagename=STRK%3AMEWNX%3AIT&viewitem=&item=320280102079

I watched ebay for like a week straight and kept searching 'bolt on exhaust' then i figured out that 1996 - 1999 GSXRs have a bolt on can stock, so then searched for those and came across this brand new yosh pipe. It must have been bought back in the 90s or something because the SKU in the packaging doesn't match anything on yosh's site or even google, except for some old catalog.

Rejetting is SO EASY EVERYONE SHOULD DO IT

PS its now 20 / 65 / 145 vs 17.5 / 60? / 127.5

Update: It runs awesome, except it pops out of the air filter every once in a while...

[pronator]

Since folks were interested in the cheap CF Yosh can ajw scored, I'm sharing this find on eBay:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=140258286254&rd=1

It looks identical to the one that ajw here got, except not brand spanking new. At $115 (shipped) right now; auction ends in 2 days. 

Just thought I'd put it on the radar. 

[The Buddha]

Popping at the exhaust ... may be somehtign you have to live with, but too much of that and it can break sheite inside them.
Anyway, try 147.5 mains. That is the one most people try.
Also try a #3 washer under each needle.
Cool.
Buddha.

[galahs]

Mine occassionally pops on down shift but usually only on over revving down shifts.

I tried larger jets on my main and noticed no real performance difference over my 145
http://gstwins.com/gsboard/index.php?topic=32141.0

[The Buddha]

No performance gain over 145 with 147.5 is it ??
You know what you should do ... Run a 147.5.
The idea is this.
Slightly richer than perfect, and a fair bit leaner than perfect will make almost no difference to the seat of the pants or the dyno or any other damn way of measuring it, except a exhaust temp guage, or a O2 sensor. Instead of being a little lean, you will have been slightly rich (remember 1 size rich will be a huge difference you will notice easily) and especially in summer, that is the ideal location to be in. You are a little lean, it can act up more in winter (but not neccesarily if you have a dry winter and a humid summer like central NC). I'd run the largest jets I can wihtout hurting performance. As in jet up in 1 size increments till you notice a drop in performance. Then reverse 1 step.
Cool.
Buddha.