surge tank set up.

**EVOSTi** · 26-07-2007, 06:53 PM

yeah i prob didnt hear him right

he did say mine was a bit small tho, but i already knew that

**The Real Roadrunner** · 26-07-2007, 07:08 PM

Originally Posted by EVOSTi

i was told today by a guy who does a bit of performance work that the ideal size of the surge tank is the same as the amount of fuel your pumps flow per minute? i think thats what he said anyway.

ideal would be what your injectors flow per min but ive never seen a need to go bigger than 2.5l.
cheers
linden

ie 4x440cc=1.76L tank

**EVOSTi** · 26-07-2007, 07:09 PM

maybe thats what he said

**The Witzl** · 27-07-2007, 12:56 PM

Originally Posted by The Real Roadrunner

ideal would be what your injectors flow per min but ive never seen a need to go bigger than 2.5l.
cheers
linden

Well when you consider that your injectors wont be running 100%DC all the time, you are right

If you take an average DC% your injectors will run at during heaving acceleration (i rekon, 75%-80%), then if you have 4 x 550cc/min injectors, thats about 1.7L

P.s. for anyone that's interested, i've re-done my thread on the basics of EFi fuel systems and surge tanks in the FAQ http://www.toymods.net/forums/showthread.php?t=467

**Vios-GT_07** · 27-07-2007, 04:08 PM

while we're on this subject..

can anyone tell me if the Walbro GSS342 (255 lph) fuel pump is safe to run externally?

**rona wagon** · 29-07-2007, 11:43 AM

PUBE. Im taking your advice in the tank idea. looked up that they as fare as i could see that the RT142 tank bolts straght in to the ST141. so now need a new RT142 efi tank...
Thanks for your info i should have went this way to start.