Just wanted to spread the word on something that could happen to you ! I just finished a LS swap and i used a quality name brand, Quick-connect, Male for a couple weeks it worked great at the fuel rail port. With no warning it decide to pull apart during a hard pull. The dual 450 pumps in my tank had no issue flooding the engine compartment instantly with fuel .The coil packs were covered with fuel / dripping with fuel. I'm am so lucky the whole car didn't burn down, I'm lucky nothing happed . I'm defiantly getting fire extinguisher for all my cars. Maybe someone can learn from my extremely stupid mistake.
CUTLASS Close Call - AN fitting failed
- Thread starter nycutlass
- Start date
I was happy to change to aftermarket rails to get rid of those fittings - I never liked how loose they fit on the factory rails.
Are you using a single -6 AN quick connect adapter fitting on a factory fuel rail with twin 450's? Is the fitting on return or feed? Factory rails don't have enough flow area to satisfy twin 450's. 3/8 line is about the min for 525 pump, twin 450's REALLY need a 1/2 line. The flow losses of a 3/8 line with 2 450's means you are only roughly 1.5 equivalent 450's worth of flow as you are effectively just burning flow into pressure rise due to the restriction.
it was the feed line. the crazy part of all this was, the plastic insert part detached from the aluminum part somehow and when i popped the hood the plastic insert part was still on the fuel rail tightly. i had to use my pocket knife to pull the tabs off the flare to pull it off it was still attached correctly. the -8 AN PTFE line was still routed with natural bends and laying next to the rail with the outer portion of the AN fitting on it. i consider myself extremely lucky and I'm so glad i had the computer controlling the fuel pump i feel if i would of done it with a relay key on/off i don't think i would have a car left right now. my only goal is to spread the word on what has happened to me and hopefully stop this from happening again.
In the world of drag racing there are very few "Safe" shortcuts, you are very lucky, I'm sincerely happy 😊 that your car didn't burn to the ground.
Brakes and fuel, in my opinion are two of the most important things you should pay attention to that tend to get shortcutted because of the difficulty in doing it right. When it comes to quick connect/disconnect, just say no. My two cents.
Brakes and fuel, in my opinion are two of the most important things you should pay attention to that tend to get shortcutted because of the difficulty in doing it right. When it comes to quick connect/disconnect, just say no. My two cents.
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