440-6 pack fuel vapour separator

[GTX clone]

Hi guys, Im running a 71 c body 440(non HP) with a 6pck in a 70 RR. Ive heard it is recommended to put a fuel/vapour seperator on to prevent vapour lock on all 440's and hemi's. Just bought the car and havent driven it much, but it does seem to work fine as is so far without the vapour seperator. I purchased a fuel seperator and am in the process of installing it. There is no return line(going back to the tank) beside the fuel pump. The return line going back to the tank runs off of the breather on passenger side valve cover. Am I supposed to tee into that somehow?? Also, I ran the car(idling in the shop) and ALOT of fuel is coming out the return line. I read on a few other websites that most of the aftermarket seperators have too large of an opening on the return line and for it to properly work it should be soldered shut and re-drilled to 040 dia. opening. Is this something that only the HP motors required or should I be putting this on my non HP motor? My RR was born a 383 and Im guessing thats why there is no return fuel line by the fuel pump?

 

[lewtot184]

the HP engines that had the separators used a dedicated 1/4" return line back to the tank. they also used different fuel pumps (higher pressure). the return orifice in the separator originally was .060" but I solder them up for the .040". the aftermarket stuff has too large of a return orifice.

 

[mikeyfrano]

Nevery have a problem with my 6bbl without a separator

 

[6PKRTSE]

I have been driving my 70 Charger with a 440 Six pack around for 27 years now with no separator & never had any vapor lock issues even sitting in hours of middle of summer heat in the Woodward & Telegraph cruises.

 

[GTX clone]

O.K., thanks for the feedback guys. Love this forum, very informative. Mopar or no car!