posted July 17, 2006 12:46 PM
Edited By: Road Rash on 17 Jul 2006 13:52
popping on decel. Help don't have a clue as to which range to adj. or which way to go. It's not bad. Kinda funny but I like it, but if it can be tuned out then well HELP. Full muzzy stock air PC3. Thanks
posted July 17, 2006 02:03 PM
You need to block off the KLEEN air injection system. take off the right side george forman grill and loosen all the screws around that lower edge of the upper and the front fake tank part. Then pop the front fake tank part up on that side a little (it gives you more room to work). You will see a large hose (approx. 3/4 of an inch in diameter) that comes from the top of the valve cover and goes into the bottom side of the frame (which is also your airbox). Pull that hose out of the airbox/frame. It will have a very severe angle cut on the hose..I assume it is to make it easier to slide into the grommet hole. You can then cut the tube flat so there isnt an angle on it and insert a plug into the airbox hole..(so there isnt an air leak in your airbox) and then plug the tube by inserting something very tight fitting into it like a large cap nut or ballbearing. That should help with the popping...it is caused by the lean condition created on decel by the KLEEN system putting the extra air into the airbox. I hope this helped you.
posted July 17, 2006 02:23 PM
+1 for suicycle. Brock supplied a plug with the instructions just like suicycle's advice. My 14 may pop slightly on decel, but no more than it did with the stock exhaust.
posted July 17, 2006 03:19 PM
Thanks. Will this mod. affect the crankcase ventlation. Would rather hear a little pop than find out I am not takeing out the moisture. If so could I not put a little aftermarket filter on the valve cover line and block off the box. Thanks again
posted July 17, 2006 04:08 PM
Surprised Muzzy didn't supply you with a plug. I pulled the whole thing off my FZ1. Slightly different setup but does the same thing. Has nothing to do with crankcase venting. It functions during decels only. Opens a reed valve to let additional air enter into the exhaust system to burn any fuel that didn't burn in the cylinders. I don't know the real reason why it pops with an aftermarket exhaust but I'll venture a guess. During decels from certain rpm ranges you might have a little richer mixture entering the exhaust. Adding the air will burn that fuel in the exhaust system and cause a slight popping. Since the pressure is low, the energy from the detonation is low and it won't damage anything. Just annoying. Plugging the air injection system prevents mixing of additional air with the exhaust during decels, thus no popping.
quote:You need to block off the KLEEN air injection system. take off the right side george forman grill and loosen all the screws around that lower edge of the upper and the front fake tank part. Then pop the front fake tank part up on that side a little (it gives you more room to work). You will see a large hose (approx. 3/4 of an inch in diameter) that comes from the top of the valve cover and goes into the bottom side of the frame (which is also your airbox). Pull that hose out of the airbox/frame. It will have a very severe angle cut on the hose..I assume it is to make it easier to slide into the grommet hole. You can then cut the tube flat so there isnt an angle on it and insert a plug into the airbox hole..(so there isnt an air leak in your airbox) and then plug the tube by inserting something very tight fitting into it like a large cap nut or ballbearing. That should help with the popping...it is caused by the lean condition created on decel by the KLEEN system putting the extra air into the airbox. I hope this helped you.
Could you remove the hose from the airbox hole, wrap up the end with duct tape (making sure it *will not* ever come off), then shove it back into the hole?
Just wondering if this could be done and not have that hose flapping around under the cover.
____________
'06 Passion Red ZX-14 | Black D&D Slip-ons | Speedo Healer | V1 | zumo 550 | Heli-Risers | PhantomX
posted July 18, 2006 02:57 AM
I suppose you could...but trust me. The hose is got a tight bend in it towards the frame and its fairly stiff and the space its in is pretty small also. It isnt going to do much flopping LOL. The whole point is is to make sure there isnt a leak in the airbox...and that the hose is no longer just pumping air into the airbox or into the atmosphere....however you do it should work.
posted July 18, 2006 03:41 AM
I pulled the hose down as suggested, pluged the hose then slipped it back into the grommet. No more popping. Full Muzzy system's on both bike's.
posted July 18, 2006 02:42 PM
Here is a procedure I wrote with pic's several years back that may give you a little more insight into the KLEEN air for those interested.
I wrote the procedure so there should be no bitching from Dale about posting the link here. ____________
"BTW....You need to get a girlfriend who's last name isn't .jpg"
posted July 18, 2006 02:46 PM
Not to threadjack...........but I wonder how stentman is doing? Good I hope. He sure is good people. ____________
I'd Rather Be Roadracing.
quote:Not to threadjack...........but I wonder how stentman is doing? Good I hope. He sure is good people.
That I could not tell you warbird but believe it or not, his old zx-12r frame was in my garage for a week during July 4th when Outsider was here visiting.
Yes, the old Stentman zx-12r (frame) still lives on as the backbone for Outsiders A1.
And although I did not know Stentman except for threads I read after the fact, I completely agree with you. He definitely comes off as a good dude and was an early pioneer for modding the 12.
____________
"BTW....You need to get a girlfriend who's last name isn't .jpg"
posted July 25, 2006 02:58 PM
Edited By: Road Rash on 25 Jul 2006 18:13
Thanks for all the info. Not to beat this to death. I gust got my service manual and had at thought. The tube on the clean air system that runs from the air box has vaccum pulsation on it at all times not just decel. It does not allow air to enter the air box but pulls it through the engine. From what I can see vaccum is caused by the blow by tube that is on the back side of the motor just below the throttle body and runs back to the air box. This is I believe the venting system for the whole motor PCV if you want to call it that. If you block off the top then you would have a realy strong vaccum on the crankcase. This is done alot on race motors which I'm sure you allready know but does not allow a change out of air in the motor.Buy pulsation using the air switch valve and reed valves it still makes a good vaccum on the crankcase but allows fresh air through the top end then crankcase into the intake system. I am going to leave my clean air system alone as I feel it will remove more moisture and take the small loss of power by running stale air through the intake system. The popping on decel well I did say I liked it and as it was said just let off slow and it does not pop! MY.02
quote:You need to block off the KLEEN air injection system. take off the right side george forman grill and loosen all the screws around that lower edge of the upper and the front fake tank part. Then pop the front fake tank part up on that side a little (it gives you more room to work). You will see a large hose (approx. 3/4 of an inch in diameter) that comes from the top of the valve cover and goes into the bottom side of the frame (which is also your airbox). Pull that hose out of the airbox/frame. It will have a very severe angle cut on the hose..I assume it is to make it easier to slide into the grommet hole. You can then cut the tube flat so there isnt an angle on it and insert a plug into the airbox hole..(so there isnt an air leak in your airbox) and then plug the tube by inserting something very tight fitting into it like a large cap nut or ballbearing. That should help with the popping...it is caused by the lean condition created on decel by the KLEEN system putting the extra air into the airbox. I hope this helped you.
I did this when I put on slipons. I have a PCIIIusb and Area P's map. It still pops and backfires lightly. I could hear it do the same with the stock pipes on also, it just wasn't so noticeable.
Any other suggestions?
____________
'03 Mille Silver - ZX-14 Blue
posted July 27, 2006 04:10 PM
Well got a case of nothing to do blues and droped the oil pan to look for goodies and found it was clean as my dinner plate.The oil screen was clean too. Took out the plugs and the were looking good for the map Muzzy put on me. With nothing else to do I look in to the vacuum thing more and found that the rear hose that I thought must have a good vacuum on it had very little. I am going to leave it alone but it has me stumped. I don't know where all the air is going but to me it is a good thing till someone kicks my ass and teaches me different.
posted July 27, 2006 04:38 PM
Dumb question... pipe will arrive in a couple of days... as far as the KLEEN hose.. couldn't I just cut it in the middle..put some type of plastic plug on the inside and place a couple of hose clamps on each side and put it back together?? I bought a MUZZY and suppose that I won't get the plug either... I figure since you have to put something in the hose.... you might as well put both of them together again and then it will be plugged but will not move at all.
posted July 27, 2006 05:18 PM
Well I just could not leave it alone. Pulled off the left forman grill and pulled off the hose that comes off the back side of the motor and goes to the bottom of the air box. I put my finger on it and waited a while and it did build up some pressure. So I do feel that this system moves air through the motor and I do feel that this is a good thing. Was wondering I am not going to do it but what if you just let it vent to the outside of the air box and pluged up the hole in the back of the air box.
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posted July 17, 2006 12:46 PM
Edited By: 
posted July 18, 2006 02:46 PM
posted July 18, 2006 05:56 PM
