Running Lean/Air Flow issue?

[Bilko]

I’ve just put together a Gori Sport 200 iron barrel in my S1 running a Jetex 22mm through a BGM “high flow” airbox, I can’t seem to richen it. Very lean and I’m wondering if the set up with the Airbox and carb doesn’t work well or am I missing something?

Carb jetting: Main jet 118 then up to 125, Pilot jet 50, choke jet 45, 200 slide.
I’ve managed about 90 miles with short runs at 30mm h, but it doesn’t sound good when changing down.
Leak testing and all seems fine.

Initially I thought I’d sorted it because of slow fuel flow and I put a fast flow tap on.

I would liked to have thought I’d have this sorted, but I haven’t used a set up like this in a long time and I’m quite disappointed with myself.

[ULC Soulagent]

Bin the jettex Robert and go delly 25

[Scooterslag]

Bin the jettex Robert and go delly 25

Yep Jettex's are too hit and miss, I've known a few people to get on with them ok but a lot more who couldn't Paul

[Bilko]

Thanks for the replies.

[MickYork]

Have you checked for an air leak now that it's running ?

[Bilko]

Yes, used an inner tube so I could test the exhaust stub.

[Leotech]

I’ve just put together a Gori Sport 200 iron barrel in my S1 running a Jetex 22mm through a BGM “high flow” airbox, I can’t seem to richen it. Very lean and I’m wondering if the set up with the Airbox and carb doesn’t work well or am I missing something?

Carb jetting: Main jet 118 then up to 125, Pilot jet 50, choke jet 45, 200 slide.
I’ve managed about 90 miles with short runs at 30mm h, but it doesn’t sound good when changing down.
Leak testing and all seems fine.

Initially I thought I’d sorted it because of slow fuel flow and I put a fast flow tap on.

I would liked to have thought I’d have this sorted, but I haven’t used a set up like this in a long time and I’m quite disappointed with myself.

I had a Gori and it flew, was good for 70ish, Pulled 4.7 top gear jetted as below, Big bore pipe SH carb through airbox etc.

Main 130
Pilot 50
Choke 50
Slide -1
Atomiser-1
Air screw 1 turns out

[Bilko]

I’ve just put together a Gori Sport 200 iron barrel in my S1 running a Jetex 22mm through a BGM “high flow” airbox, I can’t seem to richen it. Very lean and I’m wondering if the set up with the Airbox and carb doesn’t work well or am I missing something?

Carb jetting: Main jet 118 then up to 125, Pilot jet 50, choke jet 45, 200 slide.
I’ve managed about 90 miles with short runs at 30mm h, but it doesn’t sound good when changing down.
Leak testing and all seems fine.

Initially I thought I’d sorted it because of slow fuel flow and I put a fast flow tap on.

I would liked to have thought I’d have this sorted, but I haven’t used a set up like this in a long time and I’m quite disappointed with myself.

I had a Gori and it flew, was good for 70ish, Pulled 4.7 top gear jetted as below, Big bore pipe SH carb through airbox etc.

Main 130
Pilot 50
Choke 50
Slide -1
Atomiser-1
Air screw 1 turns out

Thanks. Something definitely amiss then!

[hullygully]

I’ve just put together a Gori Sport 200 iron barrel in my S1 running a Jetex 22mm through a BGM “high flow” airbox, I can’t seem to richen it. Very lean and I’m wondering if the set up with the Airbox and carb doesn’t work well or am I missing something?

Carb jetting: Main jet 118 then up to 125, Pilot jet 50, choke jet 45, 200 slide.
I’ve managed about 90 miles with short runs at 30mm h, but it doesn’t sound good when changing down.
Leak testing and all seems fine.

Initially I thought I’d sorted it because of slow fuel flow and I put a fast flow tap on.

I would liked to have thought I’d have this sorted, but I haven’t used a set up like this in a long time and I’m quite disappointed with myself.

I had a Gori and it flew, was good for 70ish, Pulled 4.7 top gear jetted as below, Big bore pipe SH carb through airbox etc.

Main 130
Pilot 50
Choke 50
Slide -1
Atomiser-1
Air screw 1 turns out

Thanks. Something definitely amiss then!

DEFO up the main jet to a 130 bud, I've even got an armadillo air hose & a breathe sweet with an airbox like a swiss cheese

[Leotech]

I’ve just put together a Gori Sport 200 iron barrel in my S1 running a Jetex 22mm through a BGM “high flow” airbox, I can’t seem to richen it. Very lean and I’m wondering if the set up with the Airbox and carb doesn’t work well or am I missing something?

Carb jetting: Main jet 118 then up to 125, Pilot jet 50, choke jet 45, 200 slide.
I’ve managed about 90 miles with short runs at 30mm h, but it doesn’t sound good when changing down.
Leak testing and all seems fine.

Initially I thought I’d sorted it because of slow fuel flow and I put a fast flow tap on.

I would liked to have thought I’d have this sorted, but I haven’t used a set up like this in a long time and I’m quite disappointed with myself.

I had a Gori and it flew, was good for 70ish, Pulled 4.7 top gear jetted as below, Big bore pipe SH carb through airbox etc.

Main 130
Pilot 50
Choke 50
Slide -1
Atomiser-1
Air screw 1 turns out

Thanks. Something definitely amiss then!

My air filter box was standard big hole type, but with the baffle out of the scoop and a hi flow filter, not the wire mesh type. I've just set my TV200 up and thats fairly standard cast iron 200 but with a AF big bore and a 22 carb and thats liking a 130 main currently, was a 132 to begin with, I think it will end up at 128 after a few more miles.

[Bilko]

Thanks.