Pegleg

Ah. I'll test it with a full tank when I've fitted a tap.

@JosephWhat bore is that tap? Got a link?

Was about third of a tank. Seems like a coincidence it was ok before. I'll get an inline tap. Trying not to restrict the flow to sort fuel starvation issue. Thanks @DAZ

Anyone know if the electric inline pump will let fuel through when its not running? Carbs have held up for weeks til I fitted a 10mm outlet to the tank without a tap yesterday. Engine full of fuel this morning. Original tap was used in the prime position previously.

Thanks @clivegto

As suggested by members I am fitting a check valve to the turbo feed. Does it need to be mounted horizontally? Better near the turbo end or the gallery end?

Exactly what I've just done. Think you meant 50mm @fatblokeonbandit Couple hours with a hacksaw and drill.

I've had mine up to 3psi static with the carbs pulled from the rubbers to check for flooding. If it can't get enough fuel it probably wouldn't flood. Mind you. It was returning fuel to the tank so maybe.

I made a spigot type as you suggested from thick alloy with a nitrile gasket. I've used 8mm spigot. Can change to 10mm if I still have problems. I was gonna ask for inline filter suggestions.

I might take you up on that @Jdeac. I'll see what happens. Any doubts I'll give you a shout. Thanks bud.

That's what I have but mine looks cheaply made. Maybe a copy. I'm fitting a temporary fuel pressure guage to the bars to see if the pressure is dropping out and causing the issue. Have fitted an 8mm fitting too the tank. The stock tap does look restrictive.

No idea but need to eliminate it as a possible problem.

I think so. I have 10mm pipe from the cold pipe to a splitter then 8mm to the carbs.

I set the float heights at 16mm as recommended by various guys on here. Apparently the pressure from the fuel pump and Pitot can put pressure on the floats so you need to compensate. Could be wrong.

Did you receive it?

Don't GSXR have external tank vent? @Gixer1460

What's the smaller pipe tail for @clivegto?

Ah cool @Joseph That's an easy solution. Did the same on my other project where carb clearance was tight. Shoulda realised. What do you use for a gasket?

Having just missed @Paulmbargain, anybody found an alternative hi flow tap for a Blandit. Not penny pinching but wanna save where I can.

Looks like it. Wish he was more reliable.

Gonna temporarily fit a bar mounted fuel pressure guage. Make sure the pressures not dropping out. Will check fuel pump output without the FPR.

That's nice.

Yes is a Blandit. Couldn't tell you what pump it is, came with the kit You can hear the fuel returning to the tank. Malpassi FPR is plumbed as: Pump feeds FPR. FPR to carbs. Return to the tank via modified guage sender. Boost reference to carb top. Tried the pump pressure at 3 psi, same symptoms.

Getting closer. Restrictor sorted the oil supply, no more right leg covered in oil. Fitted 40 pilots which seems to have sorted the idle and part throttle bollox. Only real issue now before getting it on the dyno is it seems the fuel level can't keep up at 6000 rpm ish for about 1/2 a mile. Pull over and let the bowls fill up and its fine. Floats set at 16mm. Wondering if the pump can't get enough fuel from the tank at speed. Possible tank not venting or stock tap restrictive.

I'd be interested to know too. Bloody noisy things. Like the Top Bike mechanical item but delivery is hit and miss.