Zetec Conversion

[tractor]

hi all I want to run the zetec on bike carbs and a megasquirt I have been trying to find some carbs with throttle sensor on there a bit hard to find have been offered some zx10 throttle bodies but don't now if they would work do I need a throttle sensor to run a megasquirt because I have a set of zx6 carbs but they don't have a throttle sensor

[Longboarder]

A throttle pot is just a 90 degree variable resistance driven off a rotating shaft. Pretty well any shaft can be modified to drive one. The shaft may need extending, it's end shaping and a mount making for the pot but not hard. Do the ZX6 carbs have a stick-out end about 7mm proud that could drive a pot or could you modify them like so.

 

Nigel

[Guest zoomzoom]

You will need a throttle pot if your mega squirt is set up for it, some use a map sensor I take it you are only going to use the ignition mapping part of mega squirt instead of using a megajolt

As Nigel said you could modify the carbs to fit a sensor or fit it at the throttle pedal end but this is not ideal

 

[tractor]

no there is nothing at the other end of the carbs its blank so a megasquirt will not run off of crank sensor alone because all I want the megasquirt for is to replace a dizzy

[Guest alfaGTA]

some models of zx9r carbs came with a tps, just to avoid confusion you are going to convert the carbs to run fuel injection?

[speedtripledan]

my fire blade carbs had tps

[tractor]

hi keith no I don't want to go down the injection route

[Guest alfaGTA]

you will want a megajolt instead then for the sparks? you can get it set up as throttle position sensor or as manifold air pressure but need to decide what route you want to go.

[Longboarder]

MAP is less ideal for bike carbs but do-able if you wish by drilling all four runners and leading pipes to a plenum and pipe the MAP sensor to the plenum but TPS is probably more practical.

 

Nigel

[keith kelly]

Think I have the TPS still on my broken carbs in the bucket of bits, will have a look later you are welcome to it if you can use it alternatively try and get another set of Zx6r carbs but the j1 j2 version as these have the TPS on them

[Guest alfaGTA]

Just beware most of the ebay bike breakers remove the TPS from the carbs and sell them bare!

[Guest FASTdan]

For future reference (You've ordered from me now anyway, but for others) a few carbs that I know of with TPS:

 

CBR600 (later models, 37mm, with 75mm spacings)

CBR900 (38mm, all)

ZX6R (later Mikuni type, 37mm, 75mm spacings)

ZX9R (later models, 78-87-78mm, with 78-87-78 spacings)

R1 (all, 40mm, 77-79-83mm spacings)

R6 (all, 37mm, 72mm spacings)

GSXR600 SRAD (all, 37mm, 80mm spacings)

 

I am currently working on a design for a retro-fit TPS kit for non-TPS equiped Keihin carbs (so early ZX6R, ZX7R, ZZR600, YZF600 etc). I am looking to use the standard TPS from the Ford focus and a shaft extension. I hope to have this available in the next couple of months.