"Bullitt Ride" (yesterdayknight)
06/12/2015 at 09:33 • Filed to: bmw, e30, becauseracecar, diy
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"Bullitt Ride" (yesterdayknight)
06/12/2015 at 09:33 • Filed to: bmw, e30, becauseracecar, diy | 2
| 3 |
Long story short, I replaced my leaking OEM fuel tank a couple years ago with a cheap aftermarket one and ever since I’d run into fuel starvation issues on long right hand sweepers at the track with not much less than half a tank. As a temporary fix (until I decide to gut, cage, and install a fuel cell) I rigged up this little set-up to mount in the back of the trunk. The surge tank and fuel pump I got off of ebay, the fuel filter is OEM.
It’s a 2L tank that I will use the in-tank pump to feed. The in-line pump pulls from the surge tank and sends the fuel through the filter and off to the motor. The return line from the motor goes back into the surge tank and the barb on the top of the surge tank will return to the fuel tank, that way the surge tank always stay’s full.
I’m installing bulkhead fittings in the floor of the trunk that will have barbs on either side to help segregate what’s in the car from what’s under the car. I guess another benefit to this system is that I added 2L more fuel capacity, that’ll be good for another 20-30km range per fill up!
kanadanmajava1
> Bullitt Ride
06/12/2015 at 10:02 |
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I have a surge tank in my Vectra too. It’s quite DIY model too and it doesn’t like that nice either.
I was thinking about welding the tank from aluminum but I happened to find a suitable looking stainless steel catch tank from our company’s recycling bin. It wasn’t a catch tank for engine oil but for some unknown chemical process. It had a level indicator too and it just needed some pipes to be attched to its side. The diameter has smaller than yours but it was quite tall.
I decided to put the high pressure pump inside the tank to keep it more silent. I thought that the rather large steel enclosure would keep noises nicely isolated. So I cut up a hole and made a lid to close up the hole. The lid also carried the pump and the electrical connections. My TIG welding skills aren’t very good so it took a while before it actually held gasoline in.
After I got it working I noticed that instead of silencing the pump the tank seems to act as an amplifier for the pump noise. Now it is loudest fuel pump that I have ever witnessed in any car.
BiTurbo228 - Dr Frankenstein of Spitfires
> Bullitt Ride
06/12/2015 at 10:47 |
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I’ll be doing something very similar with my Spitfire 6 project soonish. The injection system needs a surge tank as there isn’t one in the stock tank (stock car used carbs which have little in-built surge tanks as the float bowls)...
DocWalt
> Bullitt Ride
06/12/2015 at 14:35 |
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Looks nice! I’m likely going to have to do something similar when my GTI’s factory surge tank splits in half as they all seem to do. :(