Discussion
Has anyone used this stuff ? If so is it good and how did you fit it ?
I have serious fuel surge problems in my Striker, I have to keep the tank near full to prevent it.
To fit baffle foam do you have to cut open the tank and cut the foan to size intall it then weld the tank, if so does the welding affect the foam, or can you cut the foam into sizes which can be installed through the filler?
If the tank has to be cut I would be inclined to fit proper baffles either instead of or possibly as well as the foam.
CT
I have serious fuel surge problems in my Striker, I have to keep the tank near full to prevent it.
To fit baffle foam do you have to cut open the tank and cut the foan to size intall it then weld the tank, if so does the welding affect the foam, or can you cut the foam into sizes which can be installed through the filler?
If the tank has to be cut I would be inclined to fit proper baffles either instead of or possibly as well as the foam.
CT
You CAN chop it up into lumps and feed it through an appropriate orrifice but it won't be quite as effective.
It is better to zip open the tank, fill it properly and then get it welded back up. Welding isn't big problem for the foam but the welder tends to get a bit jittery!!!
Have you thought of trying a swirl pot, perhaps in conjunction with stuffing the foam in?
It is better to zip open the tank, fill it properly and then get it welded back up. Welding isn't big problem for the foam but the welder tends to get a bit jittery!!!
Have you thought of trying a swirl pot, perhaps in conjunction with stuffing the foam in?
And the first bit second, it helps a lot. But your fuel tank really need to be designed to take advantage of it. You particularly need an open area near the fuel pick up outlet.
I wouldn't have said it was any better or worse than baffle plates.
Out of interest I can run my race car down to the last couple of litres without a problem and it just uses foam and a built in collector pot. I pull well over 1.2G on corners.
I wouldn't have said it was any better or worse than baffle plates.
Out of interest I can run my race car down to the last couple of litres without a problem and it just uses foam and a built in collector pot. I pull well over 1.2G on corners.
CT. Are you 100% sure it is a surge problem? It just seems strange that it occurs with a near full tank. I had a similar problem with the Cobra! All the symtoms of fuel surge at below half a tank, especially on hard accelleration. It finally turned out to be a partially blocked fuel pump!!
If you're running fuel injection you need a swirl pot, preferably in the tank itself or at least in the fuel line.
Electric FI pumps are terrible at scavenging or sucking , especially against g forces, however once they have fuel in their bodies they are great at delivering lots of fuel at high pressure.
I had a similar problem when accelerating in my Cobra which was sorted with a swirl pot in the fuel tank.
Of course if you are running carbs ignore all the above !
Cheers,
Tony
Electric FI pumps are terrible at scavenging or sucking , especially against g forces, however once they have fuel in their bodies they are great at delivering lots of fuel at high pressure.
I had a similar problem when accelerating in my Cobra which was sorted with a swirl pot in the fuel tank.
Of course if you are running carbs ignore all the above !
Cheers,
Tony
Thanks for the replies guys.
I am running fuel injection and will have a swirl pot fitted into the fuel line before next season, I may or may not add the baffle foam.
As denisb said I can imagine the welder getting a bit 'jittery' welding a used fuel tank, even if assured it had been cleaned out properly.
I have seen a couple of swirl pots advertised and some just have plain pipe outlets for attaching the fuel line with a hose clip, is this suitable or do you really need a threaded connection (I have seen other which use JIC fitting)
Ta
CT
>> Edited by Corpulent Tosser on Sunday 30th October 09:47
I am running fuel injection and will have a swirl pot fitted into the fuel line before next season, I may or may not add the baffle foam.
As denisb said I can imagine the welder getting a bit 'jittery' welding a used fuel tank, even if assured it had been cleaned out properly.
I have seen a couple of swirl pots advertised and some just have plain pipe outlets for attaching the fuel line with a hose clip, is this suitable or do you really need a threaded connection (I have seen other which use JIC fitting)
Ta
CT
>> Edited by Corpulent Tosser on Sunday 30th October 09:47
As long as the pipes are swaged ( some pipe olives soldered onto the inlets/outlets work well) correctly rated rubber pipes with jubilee clips will suffice.
The objective is to keep the main fuel pump supplied with fuel regardless of what happens in the fuel tank. So it may be worthwhile putting in a pump between the swirl pot and the tank to make sure the swirl pot is continually supplied, or fit the swirl pot lower than the fuel tank itself so that gravity takes care of the feed.
Cheers,
Tony
The objective is to keep the main fuel pump supplied with fuel regardless of what happens in the fuel tank. So it may be worthwhile putting in a pump between the swirl pot and the tank to make sure the swirl pot is continually supplied, or fit the swirl pot lower than the fuel tank itself so that gravity takes care of the feed.
Cheers,
Tony
For my connections from the fuel tank to the swirl pot I use JIC push on fittings and the much cheaper blue unbraided hose. It's all low pressure so I am not too concerned.
As I have not had a problem yet, YES you can get away with push on fittings providing you use decent hose (don't touch the nylon braided stuff, it's useless).
You MUST have a low pressure pump between the tank and the swirl pot or it won't work as efficiently. I use a FACET red top.
As I have not had a problem yet, YES you can get away with push on fittings providing you use decent hose (don't touch the nylon braided stuff, it's useless).
You MUST have a low pressure pump between the tank and the swirl pot or it won't work as efficiently. I use a FACET red top.
Tony427 said:
So it may be worthwhile putting in a pump between the swirl pot and the tank to make sure the swirl pot is continually supplied
It can't work any other way! Mounting it lower than the fuel tank for a gravity feed is likely to be very impractical/impossible, considering that fuel tanks are generaly mounted as low as possible on vehicles. Having the fuel circulating between tank and swirl pot also keep it as cool as possible.
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