Marcos Maniacs

Thanks Mike,
       I see what you mean about the possible starvation problem......
it is probably best to use just one port and increase the pipe 
diameter...........incidentally I am running 4 dual 38 IDF Webers on
a 3.5 litre Rover with all the goodies also.
         Cheers Dave #5577










-- In MarcosManiacs@y..., "Mike Denman" <mikedenman@e...> wrote:
> Hi Dave,
> I don't remember exactly what engine/carb combination you have but I 
have two 45 DCOE Webers feeding a 2.4 liter 4 cylinder Volvo engine 
with headers, cam and all the "go fast" stuff. I pull all the gas from 
one side (port) and run a low pressure Holley electric pump (blocked 
off the mechanical pump) and a pressure regulator with a fuel psi gage 
attached. I run the pressure at 3 psi maximum and have never had a 
problem. I use 5/16 fuel line everywhere (including the fitting and 
the pickup tube on the tank as I recall). Running a "y" configuration 
could cause you problems if you are cornering hard around a long curve 
with low fuel in that one side could "un-port" allowing the fuel pump 
to suck air.
> Mike Denman
> Chassis # 4079
>   ----- Original Message ----- 
>   From: dbarton62 
>   To: MarcosManiacs@y... 
>   Sent: Wednesday, May 08, 2002 1:18 PM
>   Subject: [MarcosManiacs] Re: Fuel Cell
> 
> 
>   Hello Mike,Jack and gang,
>        Thanks for the info........the Webers I am told require high 
>   volume and low pressure fuel supply........to achieve this ,seeing 
as 
>   the outlets on the tank are so small, could I run both outlets 
into 
>   a "Y" and then run .375 tubing to the electric pump and on to the 
>   motor.......speaking of which I hope to marry the trans and motor 
>   together this weekend and drop into the frame for the last 
time.......
>   pictures to follow.
>             Cheers Dave #5577
> 
> 
> 
>   --- In MarcosManiacs@y..., "Jack Myers" <jacob@m...> wrote:
>   > Hello Mike - Dave- Maniacs
>   > In the top right of the cell there is a bulk head fitting 
screwed 
>   1/4" BSP, through this passes a tube 7 3/4" long soldered/brazed 
to a 
>   1/4"BSP M/M nipple.  When this is secured in place the tube is 
1/8" - 
>   3/16" from the bottom of the cell. You will note that the back of 
the 
>   cell has a trough approximately 1"" deep by 2" wide running along 
the 
>   width of the cell, the dipper goes right down into this ensuring 
all 
>   the petrol can be picked up, the 1/8" - 3/16" gap allowing for any 
>   sediment to settle. I add that some later cells had a left side 
pick 
>   up which was soldered into the top of the cell, and the trough 
>   actually came down to a point. To the best of my knowledge all 
cells / 
>   petrol tanks  on GTs vent through the filler cap.
>   > The two point pick up would suggest an alternative, right / 
left, 
>   but as the fuel line exits the boot / trunk in the middle back 
board, 
>   there doesn't appear to be any point, perhaps the manufacturer got 
>   bored and tried a little variety.
>   >  I trust that I have done my duty and that this is of some help.
>   > Regards to all Maniacs    Jac #4057
>   >   ----- Original Message ----- 
>   >   From: Mike Denman 
>   >   To: MarcosManiacs@y... 
>   >   Sent: Wednesday, May 08, 2002 12:52 AM
>   >   Subject: Re: [MarcosManiacs] Fuel Cell
>   > 
>   > 
>   >   Hi Dave,
>   >   The fuel tank in my car has the same arrangement as you 
describe. 
>   One side is plugged and the other side (right side) is the fuel 
>   pick-up. The fuel pickup has an elbow fitting with a brass tube 
>   soldered/brazed to the threaded end that reaches down into the 
tank 
>   almost to the bottom. My car seems to be vented through the filler 
>   cap. Is this correct? Jac Myers, do you know for certain? I 
certainly 
>   have had no problems with the fuel being drawn out of the tank so 
the 
>   tank has created a vent somewhere if not through the filler cap.
>   >   Mike Denman
>   >   Chassis #4079
>   >     ----- Original Message ----- 
>   >     From: dbarton62 
>   >     To: MarcosManiacs@y... 
>   >     Sent: Tuesday, May 07, 2002 11:20 AM
>   >     Subject: [MarcosManiacs] Fuel Cell
>   > 
>   > 
>   >     Hey gang,
>   >          Just got my fuel cell back from getting cleaned and 
leak 
>   checked
>   >     .........either side of the filler neck there is a male 
.125-27 
>   npt
>   >     fitting ..........I assume one is for line feed and the 
other is 
>   for 
>   >     venting........neither of the ports extends deep enough into 
the 
>   tank
>   >     to act as a pickup .......is this correct? If so is there 
that 
>   much 
>   >     suction in the line to pull the fuel through even at low 
fuel 
>   levels.?
>   >       Cheers Dave #5577
>   > 
>   > 
>   > 
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