gravity feed cbr600

[Hong Kong Phooey]

1999 cbr600f4 fx, fuel pump dead, new one en route from Israel.

I know carbs work fine with fuel pump bypassed and relying on gravity feed so long as fuel level is sufficient.

But what about high speeds? I mean on my private racetrack of course.
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'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8

[Raffles]

The fuel pump on my ZZR600 has been bypassed and there is no noticeable difference whatsoever.
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A good loser will always be a loser.

[yen_powell]

My Africa Twin had the same fuel pump as the CBR.

On a few occasions I got home using gravity and a topped up tank. It is fine until you try to do motorway speeds when the bike would cut out due to fuel starvation just as you passed a lorry.

As soon as you pull over the bike will start again. I managed the 50 miles home from work a few times after a pump failure. Gave up on the Honda/Mistubishi pumps, had a Mikuni vacuum pump for a while before getting a reliable Facet pump.
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Blackmail is a nasty word........but not as nasty as phlegm!
XT1200Z and a DR350 in bits

[andys675]

when my fuel pump (VF500) went I replaced it with an electric moprod one from the local car spares for £10 new and it worked fine
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Some people feel the rain, others just get wet.

[Hong Kong Phooey]

Confirming suspicions with the above posts. I'm going oem route as I think the original had worked for 33k over 16 years before leaking, which is fair play to Mitsubishi.

I did try the eBay clone for about a tenner, which lasted about 6 weeks before giving up. And it was also very noisy, as was the free of charge replacement.

Buy cheap buy twice
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'81 CG125, '97 FZS600 : '99 CBR600F4, '09 KTM RC8