Another jetting question

Post Reply
AshishNJ
Power Poster
Power Poster
Posts: 375
Joined: Mon Mar 25, 2019 10:26 am
Location: NJ USA
Location: NJ USA

Another jetting question

Post by AshishNJ »

Recently bought a project with 81 frame and engine . Plan to use K&N and 3-1 exhausts with short cans terminating under the bike near rear wheel. I am wondering what upsize jets would be ideal. Soon going to rebuild carbs and want to correct with jetting
1979 CBX (faster Red)
1981 CBX Streetfighter
2017 Aprilia Tuono.
Past rides : FZ1, BMWS100rr,S1000r,k1300S,YAMA RD350,Enfield 350

steve murdoch icoa #5322
ICOA Member
ICOA Member
Posts: 4068
Joined: Tue Mar 04, 2003 9:12 am
Location: St. Catharines, On. Canada
Location: St. Catharines, On. Canada

Re: Another jetting question

Post by steve murdoch icoa #5322 »

If you are referring to K&N pods, #80 primary and #120 mains will get you in the ballpark.

AshishNJ
Power Poster
Power Poster
Posts: 375
Joined: Mon Mar 25, 2019 10:26 am
Location: NJ USA
Location: NJ USA

Re: Another jetting question

Post by AshishNJ »

That for 81 carbs ? Correct ?
1979 CBX (faster Red)
1981 CBX Streetfighter
2017 Aprilia Tuono.
Past rides : FZ1, BMWS100rr,S1000r,k1300S,YAMA RD350,Enfield 350

daves79x
ICOA Technical Director
ICOA Technical Director
Posts: 4736
Joined: Sun Oct 01, 2006 8:05 am
Location: Knox, PA
Location: Knox, PA

Re: Another jetting question

Post by daves79x »

Not for '81 carbs. Only one main jet and it's 105 stock. You need to go to about 125.

Dave

steve murdoch icoa #5322
ICOA Member
ICOA Member
Posts: 4068
Joined: Tue Mar 04, 2003 9:12 am
Location: St. Catharines, On. Canada
Location: St. Catharines, On. Canada

Re: Another jetting question

Post by steve murdoch icoa #5322 »

daves79x wrote:Not for '81 carbs. Only one main jet and it's 105 stock. You need to go to about 125.

Dave
I promise, next time i will pay attention.

AshishNJ
Power Poster
Power Poster
Posts: 375
Joined: Mon Mar 25, 2019 10:26 am
Location: NJ USA
Location: NJ USA

Re: Another jetting question

Post by AshishNJ »

Thanks guys. I was wondering why two jets :). Dave, thanks for confirming over chat.
1979 CBX (faster Red)
1981 CBX Streetfighter
2017 Aprilia Tuono.
Past rides : FZ1, BMWS100rr,S1000r,k1300S,YAMA RD350,Enfield 350

Post Reply

Return to “CARBS: Cleaning, Rebuilding, Swaps, Aftermarket, Tuning, Syncing, and More”