Fuel Pump Bypass Hose (???)

[68PK21 440.6bbl]

Saw this recently in a for sale AD, in all my years I have never seen something like this. Anti Vapor lock trick? Inquiring minds need to know.

 

[Davea Lux]

Redneck fuel pressure reducer?

Dave

 

[69PHOENIX]

Hi Fellas,
As I have mentioned previously, back 40 yrs ago I used to install C.D. Ignitions. ( Air / Fuel Ratio of approx 14.3 :1 from Memory.)
Some model vehicles always gave trouble due to running at too higher fuel pressure.
We used a similar system to relieve the Pressure, a lot of big V8s have the same problem, usually diagnosed by the Reddish Stains around the top of the Carburetor.
I'll bet he saved 5 m.p.g. by using his home made gadget. LOL
Tony.M

 

[413]

I bought a GTX that had this gizmo on it. It looked like it was a store bought kit.

The car had all sorts of hot rod parts. Electric pump, Holley, alum intake, Headers, 456 rear, etc.

 

[Toolmanmike]

I think I will stick with a regulator and a gauge.

 

[CBODY67]

Of course, that "bleed device" would have pre-dated the later "vapor separator" item, which was probably Chrysler's attempt at doing the GM 3-fitting fuel pump (the smaller output line being a calibrated-orifice bleed "return" line) while using existing 2-fitting fuel pumps?

Just some thoughts,
CBODY67

 

[Big_John]

Saw this recently in a for sale AD, in all my years I have never seen something like this. Anti Vapor lock trick? Inquiring minds need to know.

View attachment 469118

Never seen anything like that either. Probably some sort of anti vapor lock as said.

I'd be a little hesitant to leave it in place. Looks like a good place to fracture and leak, but I've been accused of being over cautious on fuel lines. Seeing my brother's '65 Mercury burnt to the water line after a fuel leak has always stuck in my mind. No saving it, it went up too fast.