750/1000 carb jets

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yo4hgx
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Joined: Fri Dec 12, 2008 7:19 am
Location: Liverpool, Merseyside

750/1000 carb jets

Post by yo4hgx »

I'm trying to revive an old project, 3D ignition charts with "TCIP4" ignitor module from Ignitech and for this I needed a TPS sensor.

I've got an YZF750 carb set that comes with TPS fitted on carb #4 and was thinking to transfer all jets from my spare FZR1000 carb set as they were suppose to be different. And different they are... but not the way I thought, the jets off 750 are actually bigger.

Main jets:
122.5/125 (1000) >>> 138 (750)

Starter jet:
57.5 (1000) >>> 60 (750)

Pilot air jet:
125 (1000) >>> 145 (750)

Pilot jet:
45 on both

I may mixed up the names but anyway everything is bigger on 750 compared with 1000.


Also, the valve throttle size is 125 (1000) and 130 (750)...

How comes?
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