Post your carb tuning specs!

[woodlandsrider]

ok so I live in houston texas. I have bs38's and a sawed off exhaust. can someone help me out with tuning the carbs and what parts I need for them.


Thanks,

Sam Mann

[petepip]

Year:1978

Geographic Location and Altitude: UK

Carb set: BS38

Airbox: Ramair Foam pod filters

Exhaust: 38mm ID headers x 33in long and short reverse cone megas with glass fibre silencer packing

Performance Mods:Polished heads/ports

Main Jet:140

Pilot Jet:std

Needle: std

Needle std

Mix screw: 2 turns out

How many times you've had the carbs on and off the bike!:countless!!!

[pablosixfivezero]

Year: 1977D
Geographic Location and Altitude: Los Angeles, California- not going to list the altitude because here in southern california it goes from @ sea level to 5000' in a matter of 30 minutes.
Carb set: BS38
Airbox: None. mikes Pod Filters
Exhaust: 7th phase- ID 1 1/2" length 35" pipes to reverse megas
Performance Mods: Pamco Ignition System.
Main Jet: 142.5
Pilot Jet: stock
Needle: Stock
Needle Position: 2
Mix screw: stock
How many times you've had the carbs on and off the bike!: NEVER

pulls great, idles great, usually first kick, unless i haven't ridden in a week or so.

[dps650rider]

# Year: 1978
# Geographic Location and Altitude: NE PA 1600' but varies from several hundred to 2000'
# Carb set: BS38
# Airbox: Stock with extra holes in inlet and K&N filters
# Exhaust: Stock Special exhaust with 3/8" hole drilled in baffle plates
# Performance Mods: 277 rephase, 700cc JE pistons shaved for 9:1, Megacycle 250-20 cam, 2 Boyer ignitions, cleaned up casting flaws in ports
# Main Jet: Stock 135's
# Pilot Jet: 30, think I need to go to 32.5 (maybe this weekend)
# Needle: Stock in position 3
# Needle Position:
# Mix screw: 3 1/16 L, 2 9/16 R
# How many times you've had the carbs on and off: Countless, but seldom now that I have allen screws in the float bowls

# Notes: Mike's 5th gear, 17/33 sprockets, full advance timing 35 degrees, gobs of torque, pulls altered gearing in 5th about like stock engine pulls with stock gearing, 50 to 55 MPG depending on how much I beat on it ;D

[armdillo]

so what is stock needle position. cleaned my carbs this weekend. everything looked stock. the needle position was the 4th slot from the top on both. bike ran ok before, now will not run with out enricher on all the way and not run up in rpms without dieing.

?? suggestions. the connecting tube was not connected before, had a miss R side after warming up.
thanks for the ideas

[deadchef]

might as well add one more to the list...

•Year: '81sh
•Geographic Location and Altitude: northern part of the southern peninsula of michigan
•Carb set: bs34
•Airbox: uni
•Exhaust: stock header w/ emgo shorties
•Performance Mods: pamco, pma, upgraded coil, complete rewire
•Main Jet: 137.5
•Pilot Jet: 45
•Needle: canuck needle & jet
•Needle Position: #2
•Mix screw: 3 turns out
•How many times you've had the carbs on and off the bike!: hmm.. same number as the us debt and counting...
•Notes: i've upgraded the m/c, ss lines and rebuilt caliper. on/off/prime petcock. early clutch pushrod with motion pro cable. bike started out rough, po had installed the cam wrong. i've put about 2500 miles so far. i need a new exhaust!!