this is an old on going arguement but the way i see it as a automotive engineer is there is a risk of vapor lock and the sierra carb has no return line point unlike some other 2e3 pierburg carbs (vw,vaux) not to mention mech fuelpump design alowing it to folow the cam so i would be fitting it
when webber did conversion kits for the 2e3 thay had a plastic tee with a brass jet fitted in one of the holes (just like a carb jet) this was conected to the return line and you chucked the plastic version of the sierra bit (bmw,vw,vaux)
im sure thay know thair stuff when it comes to fuel systems and a plug for the return would have been easyer to supply
also its handy to have a return pipe if you ever plan on changing to injection or a diffrent setup in the future
for the hassle i would be fitting it
|