I'm going to be doing my fuel sump in a week or two here and plan on building it. I was wondering why there are only box style fuel sumps out there as opposed to cutting a tube diagonally in half and capping off the ends? Is there something wrong with a rounded type sump like that? I can build one out of sheet as well but was just thinking it would be easier to just cut a piece of straight tube I already had laying around.

something like this:



Modified by paulzy at 10:08 PM 10/30/2007

 

Paul, on a drag car, you probably wouldn't notice a difference. On a road race car, the side to side sloshing would be almost as bad as a stock tank setup.
If you go this route, you may want to do a baffle of some sort that covers part of the sump to keep fuel from sloshing back and over it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bakeoff &raquo;</TD></TR><TR><TD CLASS="quote"> , you may want to do a baffle of some sort that covers part of the sump to keep fuel from sloshing back and over it.</TD></TR></TABLE>

isnt that why u supposed to drill holes where the sump fits, rather then cut 1 large hole ?


that tube sump isnt a good idea, you wont get the capacity in the sump like a large rectangle shaped sump(full-race sump is too small ) you may get cavitation or starve the pump on certain occasions.

 

if this is for a eg/dc you might want to look into this....

https://honda-tech.com/zerothread/2138241

 

look at what ATL does for their intank fuel "surge" tanks... it'll give you some good ideas.

 

I've already ordered the fullblown setup. I was planning on running a magnafuel pump this saves me a ton.

 

just becareful with teh NPT fittings...they suck my *******.

A nicer alternative would've been O-ringed an fittings..but the bit to machine that is HELLA expensive.

 

Just modified a stock tank for road racing. Removed the stock baffle and cup setup. Replaced it with a diamond shaped box with trap doors on four sides. This way any fuel comes in and can't leave. Be interested to see if it solves my problem.