Fuel swirl/surge tank.

[Suvi]

Hi,

I'm building fuel swirl pot. But i'm little bit confused about inner walls, baffle plates. Or aren't there any?

This type tank
http://www.merlinmotorsport.co.uk/p6...duct_info.html

I was thinkgin something like this.

http://i145.photobucket.com/albums/r...23/fuelpot.jpg

Any ideas or suggestions?

Rainer

[pml]

A. Graham Bell briefly discusses swirl pots in his book, Forced Induction Performance Tuning. He shows an illustration of a swirl pot without a baffle. I don't see a need for a baffle because the pressure pump is drawing from the bottom of the swirl pot. One difference between your design and Mr. Bell's is that he put the pressure pump fitting on the center of the bottom face of the swirl pot rather than on the side of the cylindrical surface. As a side note, A. Graham Bell says the tank usually should be large enough to hold 30 seconds worth of fuel.

If my scanner was functional I would scan the drawing and post it. Sorry for that.

Paul Lohr

[Suvi]

A. Graham Bell briefly discusses swirl pots in his book, Forced Induction Performance Tuning. He shows an illustration of a swirl pot without a baffle. I don't see a need for a baffle because the pressure pump is drawing from the bottom of the swirl pot. One difference between your design and Mr. Bell's is that he put the pressure pump fitting on the center of the bottom face of the swirl pot rather than on the side of the cylindrical surface. As a side note, A. Graham Bell says the tank usually should be large enough to hold 30 seconds worth of fuel.

If my scanner was functional I would scan the drawing and post it. Sorry for that.

Paul Lohr

I have this book. But i saw that there weren't andy baffle plates. But i taught that they might improve fuel delivery during long lefthanders. ( car is bmw e30 with 3.2l MPower engine that need quality fuel delivery every second) I my case i had to put fittings on one side due to tank placement under the hood.
Instead of 3 fittings like in the book, i used 4. 1) from feed pump 2) pressure pump to engine 3) fuel rail return 4) return to fuel tank

[Suvi]

If i could put prssure pump fitting at the bottom, then there wouldn't be much need for baffle plates.

[wronghand]

Swirl pot-- just a header tank by another name? If so, no need for baffles.

The idea behind it is to supply it with fuel all the time, via a low pressure fuel pump (or gravity if your talkin' airplanes). If it's always full there's no need for baffles, as there should be no sloshing back and forth in a full header tank.

[H80N]

Suvi
found a pretty good swirlpot overview on a Subaru site

http://forums.nasioc.com/forums/show....php?t=1458249

hope this helps
Regards
Heiti

[H80N]

Suvi
could you give us more details on the engine swap on that E30?? they are a good platform with a lot of available parts.. and right now they are available at very reasonable prices at least in the US... pics too please.. if you have..
thanks
Heiti

[Suvi]

This is the car

http://opentrack.tqhq.ee/forum/viewt...tid=342&page=1

[H80N]

Suvi
am afraid that my Estonian is very very rusty...(since childhood) and the picture links did not work for me... my guess is that most here are even less familiar with the language.....could you maybe post some pictures on this forum for us???
Thanks
Heiti

[Suvi]

Here are a lot of pic's

http://www.ruus.eu/auto/m3/

And here are some of things i have done.

http://www.flickr.com/photos/rainersuvi