Technical Discussion Topics related to Technical Issues

popping on decel

Old 09-20-2006, 07:21 AM
  #1  
Member
Squid
Thread Starter
 
DBERN's Avatar
 
Join Date: May 2005
Location: WV
Posts: 59
DBERN
popping on decel

So I have just added a set of two bros. Upon decel I have a little pop crackle not alot, but still there. I only have 4k on it and want it to last a long time. Im wondering if I can cause any issues on valves and such with not jetting. Again, my mileage is not worse except for wanting to hear the new rumble and the pop can be controlled by not letting it iddle to low while deceling. I asked the local dealor about it and they said one should expect that with any aftermarket exhaust.

What do you guys think???
DBERN is offline  
Old 09-20-2006, 07:54 AM
  #2  
Member
Squid
 
98vtr1000's Avatar
 
Join Date: Aug 2006
Posts: 74
98vtr1000 is on a distinguished road
any aftermarket pipe on the SH without jetting and without disabling the PAIR will almost certainly pop and crackle on deceleration. As for ruining valves or any further internal damage I think you are pretty safe. I'd disable the PAIR (i have yet to do that but it's on my list) if the noise is bothering you, rejet for a better mixture - and ride on!
good luck with it.
98vtr1000 is offline  
Old 09-20-2006, 08:03 AM
  #3  
Senior Member
Back Marker
 
Nanotech's Avatar
 
Join Date: Jul 2006
Location: Rapid City, SD
Posts: 170
Nanotech is on a distinguished road
My jardine pipes do the same...I get lots of compliments on both acc and dec with the sound. Mine's more noticeable before the bike is fully warmed up, and below 5k rpm.
Nanotech is offline  
Old 09-20-2006, 08:40 AM
  #4  
Member
Squid
Thread Starter
 
DBERN's Avatar
 
Join Date: May 2005
Location: WV
Posts: 59
DBERN
ok

I m not worried about the noise as long as I can do no damage in the long run. Ill look into the pair system.


thanks
DBERN is offline  
Old 09-20-2006, 08:54 AM
  #5  
Member
Squid
 
98vtr1000's Avatar
 
Join Date: Aug 2006
Posts: 74
98vtr1000 is on a distinguished road
Originally Posted by DBERN
I m not worried about the noise as long as I can do no damage in the long run. Ill look into the pair system.


thanks
Check out greg's page for tutorial on removal.
98vtr1000 is offline  
Old 09-20-2006, 09:24 AM
  #6  
Senior Member
SuperBike
 
RickB's Avatar
 
Join Date: Sep 2005
Location: Buffalo, NY
Posts: 1,572
RickB is on a distinguished road
Running a lean mixture can do damage, I would suggest getting it rejetted soon.

Originally Posted by DBERN
I m not worried about the noise as long as I can do no damage in the long run. Ill look into the pair system.


thanks
RickB is offline  
Old 09-20-2006, 10:21 AM
  #7  
Member
Squid
Thread Starter
 
DBERN's Avatar
 
Join Date: May 2005
Location: WV
Posts: 59
DBERN
well that is the question of the the hour then. Is it the Pair system making it pop no matter what or is it because it is running rich that it is popping?? Or both? The pair is going to put that oxygen in there to burn any extra fuel right?

What acutally causes the damage the pop or the heat from it, and where would that damage be.
DBERN is offline  
Old 09-20-2006, 07:38 PM
  #8  
Sprung
World Champion
 
Hawkrider's Avatar
 
Join Date: Dec 2004
Location: Fulton, MO
Posts: 105,285
Hawkrider will become famous soon enoughHawkrider will become famous soon enough
Any damage that will occur will be from running lean, but you'd have to be very lean and run it that way for a long time to burn a valve. The popping on decel is from PAIR, and will only cause accelerated degradation of muffler packing and hotter exhaust, since combustion is taking place there.
Hawkrider is offline  
Old 09-20-2006, 07:46 PM
  #9  
Moderate-whore
MotoGP
 
Randman's Avatar
 
Join Date: Nov 2005
Location: Leander TX!!
Posts: 9,045
Randman is on a distinguished road
Dang, I need to get that done then, I can't stand any more accelerated degradation.... I mean the rash was bad enough...LOL

So what is a far price to pay for those little covers? Say $20 or so....??
Randman is offline  
Old 09-20-2006, 08:01 PM
  #10  
my e-penis is huge!!
Superstock
 
SPRHK's Avatar
 
Join Date: Sep 2005
Location: belvidere nj
Posts: 257
SPRHK is an unknown quantity at this point
I added a FACTORY TI-PRO jet kit. I also have 2 Bros. exhaust. With the jetting that they suggest, I dont have any "popping' or "crackling" from my exhaust.
SPRHK is offline  
Old 09-21-2006, 08:27 AM
  #11  
Member
Squid
Thread Starter
 
DBERN's Avatar
 
Join Date: May 2005
Location: WV
Posts: 59
DBERN
Originally Posted by SPRHK
I added a FACTORY TI-PRO jet kit. I also have 2 Bros. exhaust. With the jetting that they suggest, I dont have any "popping' or "crackling" from my exhaust.
did you do anything to the pair?? And also 'jetting they suggest" who is they tbro or the factory jet kit folks?
DBERN is offline  
Old 09-21-2006, 04:33 PM
  #12  
Senior Member
Back Marker
 
iamanonymous's Avatar
 
Join Date: Aug 2006
Location: in front of you
Posts: 155
iamanonymous is on a distinguished road
remove pair and modify your airbox. you're probably rich. jet kits allow to lean out fuel.
iamanonymous is offline  
Old 09-21-2006, 05:36 PM
  #13  
Junior Member
Squid
 
PHPERFORMANCE's Avatar
 
Join Date: Aug 2006
Location: Neenah,WI
Posts: 24
PHPERFORMANCE is on a distinguished road
i have devil high mount with the factory 1.7 jet kit, my air fuel is right on the money(ive spent the last week on the dyno at work).i still get a little popping on high rpm deccells.my pair system is removed(i just flipped them over and removed the other junk).i have never seen any great improvements from anyone on modifing the airbox(no disrespect to anyone!).
PHPERFORMANCE is offline  
Old 09-22-2006, 05:34 PM
  #14  
Senior Member
Back Marker
 
iamanonymous's Avatar
 
Join Date: Aug 2006
Location: in front of you
Posts: 155
iamanonymous is on a distinguished road
Originally Posted by PHPERFORMANCE
i have devil high mount with the factory 1.7 jet kit, my air fuel is right on the money(ive spent the last week on the dyno at work).i still get a little popping on high rpm deccells.my pair system is removed(i just flipped them over and removed the other junk).i have never seen any great improvements from anyone on modifing the airbox(no disrespect to anyone!).
yeah the airbox mod is a quick fix for a lean condition. could be just cut a couple holes or sections, or in my case before the k&n, remove the entire top...no gas savings or major performance mods can me made until a jet kit is installed and dyno tuning is done. what afr did you tune to?
iamanonymous is offline  
Old 09-22-2006, 06:09 PM
  #15  
Senior Member
Superstock
 
Join Date: Dec 2005
Posts: 428
Speed_Demon is an unknown quantity at this point
Probably a bad pair valve or pair valve hose.
Speed_Demon is offline  
Old 09-23-2006, 04:17 AM
  #16  
Member
Squid
 
98vtr1000's Avatar
 
Join Date: Aug 2006
Posts: 74
98vtr1000 is on a distinguished road
not to hijack - but on a side not. With factory jetting and aftermarket slip ons, will the bike generally run rich or lean with factory carb settings.?
98vtr1000 is offline  
Old 09-23-2006, 04:35 AM
  #17  
Senior Member
Superstock
 
Join Date: Dec 2005
Posts: 428
Speed_Demon is an unknown quantity at this point
Originally Posted by 98vtr1000
not to hijack - but on a side not. With factory jetting and aftermarket slip ons, will the bike generally run rich or lean with factory carb settings.?
Slightly lean. If you also install a high flow aircleaner get a jet kit or atleast shim the main needles.
Speed_Demon is offline  
Old 09-23-2006, 07:14 AM
  #18  
Junior Member
Squid
 
PHPERFORMANCE's Avatar
 
Join Date: Aug 2006
Location: Neenah,WI
Posts: 24
PHPERFORMANCE is on a distinguished road
The Best Thing You Can Do,is Find A Local Shop With A Dyno,and Have Them Do A Load Run To See Where Your Bike Is.at Least You Have A Base Line To Work With(we Only Charge 30.00 For 3 Full Pulls And A Baseline).i Had My Bike On The Dyno For A Week Trying To Get The Big #'s,but That Tune Wont Work For Just Driving.i Have 182f/185r Jets,needle On 4th Notch With Shim,2.5 Turns Out On The Screws,and 45 Pilots-so It Will Idle.the Bike Still Makes 111hp To The Wheel And Its Driveable.
PHPERFORMANCE is offline  
Old 09-23-2006, 09:03 AM
  #19  
Senior Member
Back Marker
 
iamanonymous's Avatar
 
Join Date: Aug 2006
Location: in front of you
Posts: 155
iamanonymous is on a distinguished road
Originally Posted by PHPERFORMANCE
The Best Thing You Can Do,is Find A Local Shop With A Dyno,and Have Them Do A Load Run To See Where Your Bike Is.at Least You Have A Base Line To Work With(we Only Charge 30.00 For 3 Full Pulls And A Baseline).i Had My Bike On The Dyno For A Week Trying To Get The Big #'s,but That Tune Wont Work For Just Driving.i Have 182f/185r Jets,needle On 4th Notch With Shim,2.5 Turns Out On The Screws,and 45 Pilots-so It Will Idle.the Bike Still Makes 111hp To The Wheel And Its Driveable.
very nice. with my two to one exhaust conversion the mixture was extremely rich. all this info should be taken with a grain of salt though. every motor is different and most peoples setups are very different.
iamanonymous is offline  
Old 09-23-2006, 11:39 AM
  #20  
Junior Member
Squid
 
PHPERFORMANCE's Avatar
 
Join Date: Aug 2006
Location: Neenah,WI
Posts: 24
PHPERFORMANCE is on a distinguished road
we had a 2005 rc51 at work with a 2inot1 jardine on it.he lost 5hp with the 2 into 1 and we spent hours on the dyno trying to get it back-didnt happen.it did run alot richer with that system on it, it doesnt scavange as well.just like you loose hp with the high mounts.im not knocking 2 into 1's,they look awsome.they just dont tune as easy.
PHPERFORMANCE is offline  
Old 09-23-2006, 09:11 PM
  #21  
Sprung
World Champion
 
Hawkrider's Avatar
 
Join Date: Dec 2004
Location: Fulton, MO
Posts: 105,285
Hawkrider will become famous soon enoughHawkrider will become famous soon enough
An old buddy of mine in VA had an '02 RC51 with the Jardine 2-1. I had an '02 RC51 with Harris pipes. He made 0.5 hp less than I did. Pissed me off actually because he paid like $450 for his pipe and me about $950. Still, we were making about 10hp more than stock, so it was all good.
Hawkrider is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SuperCleat
Technical Discussion
5
06-25-2010 12:39 PM
ViperBoy
Technical Discussion
0
06-20-2008 08:43 AM
inderocker
Technical Discussion
32
05-15-2008 10:23 AM
collectiv
Technical Discussion
3
04-21-2006 08:24 PM
EngineNoO9
General Discussion
11
11-22-2005 08:37 PM


Thread Tools
Search this Thread
Quick Reply: popping on decel


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.

All times are GMT -7. The time now is 09:54 PM.


© 2019 MH Sub I, LLC dba Internet Brands