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The mkiv Supra Owners Club

Fuel pump setup


captainchaos

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Think its the 342 you are after, there is a 341 which has the fuel outlet in a slightly different position.

 

Someone else should be able to confirm.

 

As for your original question, what fuel pump for 1000cc injectors, any pump will run them it more a case of what your flow requirements are ie power etc.

 

The above pump will flow enough on its own for approx 550hp, a single Bosch 044 pump should be good for 650hp or more.

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GSS342 j-spec, GSS341 UK Spec IIRC. Deffinately a few different setups to consider. Keep the original or repace it with a wlabro and use it to prime a Swirl pot and use an Bosch External. Key also is fuel pressure, and although your on 1000cc squiters which are enough for 1000+bhp will you ever be running them at full tilt? a single walbro should handle the 600hp area.

2 x walbros flow a lot of juice, if going that route it may be an idea to get a boost switch and relay setup done so that the second pump only comes online when your above a set boost setting.

Most peope just run the 2 pumps in parrallel and dont have any problems, though some have had problems with the wiring as the current draw on the 2 pumps was a bit much. Theres a few decent diagrams for dual pump wiring and setup around, will see if i can dig one out.

dual pump wiring.JPG

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