Hey doods,
I've found myself the proud new owner of a '89 GSX 1100F
She hadn't run in four years so I put the carbs through a sonic cleaner, installed new plugs/etc and she sputtered herself back to life.
Even got the adjustable windscreeen working again!
But she still has some carb issues and I found some red flags during the initial tlc session. Any input is valued since I'm still learning my way around carbs.
She still has the origial BST34SS carb
External mods:
Internal stock parts:
Running issues:
*I will be checking for vacuum leaks and will follow with a carb sync.
Primary question:
Does the current mix of intake/carb/exhaust mods seem correctly done by the former owner or am I better off reverting the mods back to stock?
Secondary question:
In prep for reverting back to stock I've already acquired an original air box and correct Mikuni oem main jets, but....
1) Can I make the aftermarket jet needles work (and in what e-ring position?)
2) Can I get away with leaving the aftermarket exhaust on there?
Luv U Long Time
I've found myself the proud new owner of a '89 GSX 1100F
She hadn't run in four years so I put the carbs through a sonic cleaner, installed new plugs/etc and she sputtered herself back to life.
Even got the adjustable windscreeen working again!
But she still has some carb issues and I found some red flags during the initial tlc session. Any input is valued since I'm still learning my way around carbs.
She still has the origial BST34SS carb
External mods:
- K&N air filter pods
- Vance & Hines four-to-one exhaust
Internal mods:
- Main jets are stamped 132 (not the stock 110/112.5)
- Jet needles are multi-tapered aluminum jobs with the e-ring in position 3 of 6 (third down from top)
Internal stock parts:
- Needle jets (will measure tonight but believe they are the stock P-2)
- Pilot jet is the stock 32.5
- Pilot air jet is the stock 135
- Pilot screw setting is the stock 1.5 turns out
- Floats are spot on at 14.6mm
Running issues:
- Idle can be erratic*
- Idle will only drop slowly*
- Backfires regularly below 4000 rpm
- Backfires are seldom but still exist at higher rpms
*I will be checking for vacuum leaks and will follow with a carb sync.
Primary question:
Does the current mix of intake/carb/exhaust mods seem correctly done by the former owner or am I better off reverting the mods back to stock?
Secondary question:
In prep for reverting back to stock I've already acquired an original air box and correct Mikuni oem main jets, but....
1) Can I make the aftermarket jet needles work (and in what e-ring position?)
2) Can I get away with leaving the aftermarket exhaust on there?
Luv U Long Time
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