Modifications - Performance Discuss aftermarket and DIY performance modifications

Shimming the stock carbs

Old 02-29-2012, 09:52 PM
  #1  
New Hawk Rider
Superstock
Thread Starter
 
eersfanpilot's Avatar
 
Join Date: Jul 2009
Location: Ventura Co. SoCAL
Posts: 258
eersfanpilot is on a distinguished road
Shimming the stock carbs

Ive done the bafflectomy and now have the lean carb cough. Can someone link me to a writeup that I can follow to shim the carb needles. I have searched but cant find a "shimming guide for dummies "

Also, do I need to re sync? They are fine at the moment, just running lean.
eersfanpilot is offline  
Old 02-29-2012, 10:01 PM
  #2  
Senior Member
MotoGP
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,934
smokinjoe73 is on a distinguished road
This is I think the benchmark. https://www.superhawkforum.com/forum...-set-up-24769/

I have 2 bros carbons and used this for a baseline and go pretty close. How do you know they are sync'd fine? While you have it apart at least put the valve on the front carb to do the sync if you chose later.

I jetted then synced but not the same day. Jetting is more important
smokinjoe73 is offline  
Old 03-01-2012, 06:33 AM
  #3  
New Hawk Rider
Superstock
Thread Starter
 
eersfanpilot's Avatar
 
Join Date: Jul 2009
Location: Ventura Co. SoCAL
Posts: 258
eersfanpilot is on a distinguished road
Originally Posted by smokinjoe73 View Post
This is I think the benchmark. https://www.superhawkforum.com/forum...-set-up-24769/

I have 2 bros carbons and used this for a baseline and go pretty close. How do you know they are sync'd fine? While you have it apart at least put the valve on the front carb to do the sync if you chose later.

I jetted then synced but not the same day. Jetting is more important

Thanks. I did come across that write up and was reading through it but wanted to double check. So according to this, it says to buy and install "a set of #48 pilot jets (per Dan Kyle & HRC)". Is this required? Can you just shim the stock needles as some have suggested on here?
eersfanpilot is offline  
Old 03-01-2012, 07:35 AM
  #4  
Senior Member
MotoGP
 
smokinjoe73's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 4,934
smokinjoe73 is on a distinguished road
I dont think I changed the jets & it was fine. Just be real careful about the choke fittings. They are plastic where they bend 90* into the carbs and break easily.(effortlessly)
smokinjoe73 is offline  
Old 03-01-2012, 07:46 AM
  #5  
Senior Member
SuperSport
 
jay956's Avatar
 
Join Date: Aug 2009
Location: Richmond, VA
Posts: 684
jay956 is on a distinguished road
Originally Posted by smokinjoe73 View Post
This is I think the benchmark. https://www.superhawkforum.com/forum...-set-up-24769/

I have 2 bros carbons and used this for a baseline and go pretty close. How do you know they are sync'd fine? While you have it apart at least put the valve on the front carb to do the sync if you chose later.

I jetted then synced but not the same day. Jetting is more important
Why is that thread still not a sticky?
jay956 is offline  
Old 03-02-2012, 05:11 AM
  #6  
Snap, Tap or Nap!!!!
Back Marker
 
00SUPERHAWK's Avatar
 
Join Date: Feb 2012
Location: Melbourne, FL
Posts: 197
00SUPERHAWK is on a distinguished road
I have a spot on part throttle (maybe less than 1/8) where I get a good bit of bucking. I happends primarily when bike is cold. But will do it if I cruise in 6th at 3k. Did some reading on here and it may be a "Lean Cough"? Not sure. Haven opened up the carbs yet to see if PO did any work to them. Just wondering and throwing it out there.
00SUPERHAWK is offline  
Old 03-02-2012, 02:43 PM
  #7  
New Hawk Rider
Superstock
Thread Starter
 
eersfanpilot's Avatar
 
Join Date: Jul 2009
Location: Ventura Co. SoCAL
Posts: 258
eersfanpilot is on a distinguished road
Thanks
eersfanpilot is offline  
Old 03-03-2012, 06:44 AM
  #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
Stuck, as requested!
Hawkrider is offline  
Old 03-03-2012, 06:15 PM
  #9  
Connie Demico does toad?
Superstock
 
Join Date: Oct 2011
Location: Lakeway
Posts: 380
GlockPointer is on a distinguished road
Originally Posted by 00SUPERHAWK View Post
I have a spot on part throttle (maybe less than 1/8) where I get a good bit of bucking. I happends primarily when bike is cold. But will do it if I cruise in 6th at 3k. Did some reading on here and it may be a "Lean Cough"? Not sure. Haven opened up the carbs yet to see if PO did any work to them. Just wondering and throwing it out there.
Why on earth be at 3k rpm in 6th? What wouldn't buck?
GlockPointer is offline  
Old 03-04-2012, 07:17 AM
  #10  
Snap, Tap or Nap!!!!
Back Marker
 
00SUPERHAWK's Avatar
 
Join Date: Feb 2012
Location: Melbourne, FL
Posts: 197
00SUPERHAWK is on a distinguished road
Originally Posted by GlockPointer View Post
Why on earth be at 3k rpm in 6th? What wouldn't buck?
Sorry thought about my post after I put it up and thought that was dumb!!

It was a of the top of my head statment, more like any gear around 3k. As if your in traffic and at the part thottle cruze around 3k.
00SUPERHAWK is offline  
Old 03-24-2012, 08:25 AM
  #11  
Senior Member
Superstock
 
zxbud's Avatar
 
Join Date: Oct 2011
Location: Pompano Beach, Fl.
Posts: 273
zxbud is on a distinguished road
Buck

Originally Posted by GlockPointer View Post
Why on earth be at 3k rpm in 6th? What wouldn't buck?
Mine won't and will accelerate smoothly in 6th. At 2500r's it will cruise ok but is a little snatchy accelerating if not shifted down to 5th.
zxbud is offline  
Old 04-01-2012, 07:26 PM
  #12  
Super Byrd
Superstock
 
Byrdman's Avatar
 
Join Date: Aug 2008
Location: Cumming, Ga
Posts: 356
Byrdman is on a distinguished road
Thanks
Byrdman is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
VThokie412
Modifications - Performance
13
02-17-2012 06:34 PM
uchi
Modifications - Cosmetic
2
07-19-2010 06:19 AM
scarface
Technical Discussion
9
01-01-2009 08:09 AM
redman
Technical Discussion
12
08-01-2007 05:28 PM
mojo
Modifications - Performance
2
08-22-2005 06:44 AM


Thread Tools
Search this Thread
Quick Reply: Shimming the stock carbs


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 10:15 AM.


© 2019 MH Sub I, LLC dba Internet Brands