nyc zx-14
Expert Class
Manager Star Toyota Bayside,NY
Posts: 214
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posted August 11, 2008 06:38 PM
Wondering if what I did can harm the engine from reduced backpressure. I got conflicting opinions from 2 different Kawi dealers. One said doing this mod will "burn the valves from running too lean". The other said it will be fine, have at it.
Who is right? I hope it's the latter!!!
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Currently?
2007 Kawasaki ZX-14, 1999 Kawasaki VN 750, 1976 Suzuki RE-5 Rotary
http://www.goldiesplating.com
   
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street racer
Expert Class
Posts: 141
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posted August 12, 2008 07:22 AM
Your bike wont run leaner just better. Your fuel map didnt change and while cruising the O2 sensor adjusts the fuel mixture. Nothing has changed that will make it run leaner. In fact mine is running cooler than it did before the mod which certainly isnt a symptom or running lean. Worry less ride more !!!!
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bigwillie3236
Expert Class
Posts: 115
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posted August 12, 2008 11:29 AM
One guy cut the coupling end of the left side exhaust and had it welded shut.The other guy had the exhaust cut at the bubble and had it welded,but he had to take his whole system off to get this done.The first option is the easiest ,since you wouldnt have to pull the whole exhaust off .the two guys are very cool and i think i am gonna get them to hook me up. i am gonna try to post some pics as soon as i get my kids to show me how.
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street racer
Expert Class
Posts: 141
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posted August 12, 2008 06:19 PM
quote:
One guy cut the coupling end of the left side exhaust and had it welded shut.The other guy had the exhaust cut at the bubble and had it welded,but he had to take his whole system off to get this done.The first option is the easiest ,since you wouldnt have to pull the whole exhaust off .the two guys are very cool and i think i am gonna get them to hook me up. i am gonna try to post some pics as soon as i get my kids to show me how.
This afternoon I pulled off the left side gutted exhaust and found a can that was the right size to fit over the outlet. It was a small can of spray cookling oil...ha !! Cut off the bottom leaving it about 2 inches long. Installed it over the outlet and fastened it on with a hose clamp. A real GHETTO fix !!!! Anyway, took it out for a ride and it was just too loud with all the exhaust flowing through one gutted can. Didnt sound bad just way too loud. So put the gutted muffler back on for now. There sure was a shitload of air coming out of that one muffler !!!
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bigwillie3236
Expert Class
Posts: 115
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posted August 14, 2008 05:08 PM
The right side can on these bikes are not gutted.I agree your bike was probly way too loud with right can gutted.
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nyc zx-14
Expert Class
Manager Star Toyota Bayside,NY
Posts: 214
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posted August 14, 2008 06:16 PM
quote:
The right side can on these bikes are not gutted.I agree your bike was probly way too loud with right can gutted.
Wouldn't running all the exhaust through a single unmodified can be bad? After all, the bike was designed to vent through TWO pipes of a certain diameter, not one... Unless of course that one pipe was opened up to let double the exhaust gas pass through it.
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Currently?
2007 Kawasaki ZX-14, 1999 Kawasaki VN 750, 1976 Suzuki RE-5 Rotary
http://www.goldiesplating.com
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bigwillie3236
Expert Class
Posts: 115
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posted August 15, 2008 03:02 PM
The right side can has two 5/8 inch holes drilled in them. It sounds great and the bikes fly.Your bike is louder because you have four holes driiled and the tube cut out, i think.
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nyc zx-14
Expert Class
Manager Star Toyota Bayside,NY
Posts: 214
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posted August 19, 2008 06:10 PM
 Edited By: nyc zx-14 on 19 Aug 2008 19:11
Here are a couple of pics of what the INSIDE of a ZX-14's cans look like after removing the center pipe:
(Seen DEEP inside is the hole drilled BEFORE I chose to remove the center pipe)
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Currently?
2007 Kawasaki ZX-14, 1999 Kawasaki VN 750, 1976 Suzuki RE-5 Rotary
http://www.goldiesplating.com
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bigwillie3236
Expert Class
Posts: 115
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posted August 21, 2008 07:21 PM
Yes sir now thats GUTTED.Your bike is probably loud with both pipes ,right ?
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nyc zx-14
Expert Class
Manager Star Toyota Bayside,NY
Posts: 214
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posted August 22, 2008 04:53 PM
quote:
Yes sir now thats GUTTED.Your bike is probably loud with both pipes ,right ?
Louder, yes. But not TOO loud. It's more a deep, throaty grumble than a harsh roar like some pipes. Sounds FANTASTIC in both my opinion and all others that have heard it. I HIGHLY recommend the mod for anyone not wanting or affording after market pipes.
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Currently?
2007 Kawasaki ZX-14, 1999 Kawasaki VN 750, 1976 Suzuki RE-5 Rotary
http://www.goldiesplating.com
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pwshadow
Novice Class
Posts: 51
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posted June 15, 2011 07:09 AM
Sorry to dig up an old thread here but unlike my old bike there arent many that have gutted their stock zx-14 pipes. If anyone who has done this is still around can you give me some advice? I have cut all the way around the center pipe but it is welded in further down the tube. How did you get it out. Just wiggle it until the weld breaks?
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pwshadow
Novice Class
Posts: 51
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posted June 15, 2011 07:11 AM
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EL Phantom
Novice Class
Posts: 42
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posted June 16, 2011 11:49 PM
http://www.bikeland.org/board/viewthread.php?FID=27&TID=59958
CHECK OUT!!!
this is my old thread, check the pipes shortened for 2/3 of the length.
+ 2 HP on the dyno and a hell of a sound.
this is a real + for people who can not afford a whole system or just want to keep the OEM pipes.
it is really sweet for street use, the sound is incredible.
the bike has already +6k on the dash with these pipes no problem at all!!!
i didnt take out any pipe, do take notice that the end tip (1) as it goes to the front will be devided in 3, so if you cut the can it will have 3 exit holes
you will need a real good cutter to pass through the pipes but it is all worth it!!!
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QBP Finest
ZX14 '08 model dragbike
ZX14 '10 model streetbike
ZX10 '09 model streetbike
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Brubaker
Parking Attendant
Posts: 1
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posted June 25, 2011 03:55 PM
Edited By: Brubaker on 25 Jun 2011 23:57
This is what I did to my stock exhaust.
Removed the caps, Cut 11' off from the rear, cut the 3 pipes inside at a 45 degree angle and reinstalled the caps and riveted them back on. It sounds really good and it was free. I also put what I removed on a scale and each side was 4.8lbs.
Rear section
Front
After 45 degree cut
Finished
Before
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2011 ZX-14
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ArmyRecon19d
Novice Class
Posts: 58
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posted June 28, 2011 08:55 PM
I'm saving up for my Brocks SMeg and gutted/cut my TRC cans because they weren't loud enough. I know i have to work on my bitch strips, give me a few weeks on the thing.
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ArmyRecon19d
Novice Class
Posts: 58
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posted June 28, 2011 09:06 PM
Not a huge sound difference at idle. 2-3krpm is definitely louder. From there to redline it screams. It'll hold me over til I can get my Brocks.
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