Surge Tank Specs.

Matatak · Post by **Matatak** » Tue Nov 06, 2007 10:12 pm

so im basically going off good ol' Subarinos Pics of his Surge tank here.
am i right in thinkin the top 3 outlets are 8mm and the bottom is 12mm as thats the same size as the Inlet on the VL fuel pump. (gettin 8mm on is no fun job

)

also wt thickness do ppl do em? and wt general capacity?
liek 1 litre maybe 2 tops im thinkin aswel.

also why do ppl make em round? surely that are easier to make rectangular

SuBaRiNo · Post by **SuBaRiNo** » Tue Nov 06, 2007 10:20 pm

I think the bootom outlet was 10mm.... but i seriously can't remember... i might need to measure it for you.

They can be any shape although people find they are easier to make with using large diameter pipe to base it off.

When i got mine i looked up a lot of info saying that about 1L was the smallest you should go with.

Mine is another fine Vidler made product.

Dave

YouTube · Post by **El_Freddo** » Wed Nov 07, 2007 9:35 am

Are there any legal issues with mounting these under the bonnet rather than the back of the car? Just that i don't see how i'm gonna fit a 1 ltr cylinder under there unless i cut out the floor pan which to me is not an option.

Cheers

Bennie

PS: very nice looking work there subarino.

SuBaRiNo · Post by **SuBaRiNo** » Wed Nov 07, 2007 6:54 pm

Should fit under the rear seats under the car.

Dave

SuBaRiNo · Post by **SuBaRiNo** » Wed Nov 07, 2007 6:58 pm

Forgot to add... As you know it's a bad idea to heat fuel... when the tank is in the engine bay it does get hot... i wouldn't do it personally.

Dave

stamp_licker · Post by **stamp_licker** » Wed Nov 07, 2007 7:17 pm

El_Freddo wrote:Are there any legal issues with mounting these under the bonnet rather than the back of the car? Just that i don't see how i'm gonna fit a 1 ltr cylinder under there unless i cut out the floor pan which to me is not an option.

Cheers

Bennie

PS: very nice looking work there subarino.

Grab a l series efi tank no need for a surge tank.

Matatak · Post by **Matatak** » Wed Nov 07, 2007 7:47 pm

SuBaRiNo wrote:Forgot to add... As you know it's a bad idea to heat fuel... when the tank is in the engine bay it does get hot... i wouldn't do it personally.

Dave

Lapseds Wagon currently runs a setup with the Surge Tank in the engine bay doesnt he?

cant see it beign a problem sitting on the back of the spare wheel ledge thingo.

El Freddo a EFI tank is probably the best option for you seen as its slightly out of shape atm

D3V1L · Post by **D3V1L** » Wed Nov 07, 2007 8:01 pm

yuoull look for any excuse to not do things properly hey matt..... and as for lapsed car..i have had to make an emergency repair under his bonbnet while on offroad trip

hose got hot on the surge tank and head dissipated and split...spilling fuel everywhere
a few guys will remember that

dave

SuBaRiNo · Post by **SuBaRiNo** » Wed Nov 07, 2007 8:05 pm

Lapsed one is what im talking about when i say it gets hot... run the car on a hot day ya can't put your hand on the thing. Hot fuel does not help.

Convenient yes... but i wouldn't.

Dave

Matatak · Post by **Matatak** » Wed Nov 07, 2007 8:17 pm

SuBaRiNo wrote:Lapsed one is what im talking about when i say it gets hot... run the car on a hot day ya can't put your hand on the thing. Hot fuel does not help.

Convenient yes... but i wouldn't.

Dave

can u touch urs?

SuBaRiNo · Post by **SuBaRiNo** » Wed Nov 07, 2007 8:35 pm

LOL yes. Mines stone cold all the time. I assume that was a serious question. Why would i have said it if mine was just as hot?

Dave

Matatak · Post by **Matatak** » Wed Nov 07, 2007 9:07 pm

SuBaRiNo wrote:LOL yes. Mines stone cold all the time. I assume that was a serious question. Why would i have said it if mine was just as hot?

Dave

yer it was.

i need to go look at the space i got in the back now.

thing with me wanting to put it in the engine bay was that all the wiring is already there for me as im not a Genius like u Subarino

90brumby · Post by **90brumby** » Wed Nov 07, 2007 9:50 pm

ur just slack change ur wiring so it wrks properly my dads car runs a fuel cooler to keep the fuel cold in the engine bay

YouTube · Post by **El_Freddo** » Fri Nov 09, 2007 9:45 am

Matatak wrote:El Freddo a EFI tank is probably the best option for you seen as its slightly out of shape atm

Thanks for reminding me matatak. Now when my fuel gauge gets to the "E" i get nervous as i don't know when the fuel runs out now

I've heard that the EFI tank is good but isn't a completely fool proof solution.

I might as well upgrade my fuel lines while i'm at it - I think it could be the old smaller diametre metal carbie lines that is making the engine drop off between 3 - 4,000 RPM when full throttle. After 4 she comes on good and strong until I chicken out, usuallly at 5,500. Just once i'd like to touch the rev limiter, but would most likely do it at idle.

Cheers

Bennie

discopotato03 · Post by **discopotato03** » Fri Nov 09, 2007 12:03 pm

Swirl pots . I can never figure out why people make them with the low pressure or lift pumps fuel entering the pot up high . You want the coolest fuel entering the pot down low because this is where the EFI pump draws from - down low . Also the greater the volume the lift pump can move the cooler the fuel in the pot will be .

The volume of the pot only alters the the length of time the engine can run without fuel arriving from the main tank ie fuel completly away from the lift pumps pickup . Don't forget that all the fuel being bypassed at the EFI fuel pressure reg is returning to this swirl pot so effectively all thats not being retrurned is that going through the injectors . With a litre of fuel you could go a fair way even flat stick . I cant imagine anyone driving flat out on full lock long enough to consume a litre of fuel too often .
Given a choice I'd make a swilrl pot reasonably small and tall rather than fat and short , believe it or not 3" bore tube works just as well as 4 or more and I've seen successful ones the size of a drink can . I think anywhere between 700 to 1000 mills is fine for an 1800-2000cc engine .

You calls but personally I'd use the factory EFI tank because it simplifies everything and looks factory for a normally driven car .

Matatak · Post by **Matatak** » Fri Nov 09, 2007 6:04 pm

discopotato03 wrote:Swirl pots . I can never figure out why people make them with the low pressure or lift pumps fuel entering the pot up high . You want the coolest fuel entering the pot down low because this is where the EFI pump draws from - down low . Also the greater the volume the lift pump can move the cooler the fuel in the pot will be .

The volume of the pot only alters the the length of time the engine can run without fuel arriving from the main tank ie fuel completly away from the lift pumps pickup . Don't forget that all the fuel being bypassed at the EFI fuel pressure reg is returning to this swirl pot so effectively all thats not being retrurned is that going through the injectors . With a litre of fuel you could go a fair way even flat stick . I cant imagine anyone driving flat out on full lock long enough to consume a litre of fuel too often .
Given a choice I'd make a swilrl pot reasonably small and tall rather than fat and short , believe it or not 3" bore tube works just as well as 4 or more and I've seen successful ones the size of a drink can . I think anywhere between 700 to 1000 mills is fine for an 1800-2000cc engine .

You calls but personally I'd use the factory EFI tank because it simplifies everything and looks factory for a normally driven car .

lol i udnerstand where ur coming from here. but this is for my EJ22 in my MY
any1 happen to be able to get me an EFI tank for my car

id appreciate it lol

surge tank is the cheapest option for me.

SuBaRiNo · Post by **SuBaRiNo** » Fri Nov 09, 2007 11:59 pm

if there was an EFI tank available for MYs i sure as hell would not be running a Surge tank either... we have em cos we must... not cos we want em.

Dave

discopotato03 · Post by **discopotato03** » Sat Nov 10, 2007 11:07 am

Fair enough , anything available in USDM ?

Long shot but if the MY tank has a large enough top plate to access the fuel level float device sometimes you can place the swirl pot in the tank via the top . It sounds like the L series tank doesn't bolt into an MY .

With other cars occasionally people have found std EFI tanks from some other make/model and grafted them in .

Have the US brothers/sisters at USMB fount any easier alternative ?

Cheers A .