did a little search but not much info.
anyway im sick of getting to half a tank of fuel and having to fill up again plus this means that when i fill up again, that half a tank of fuel will of been in there for a while??
i also dont really want to have 50+ litres of fuel when going down the strip etc etc
so boys and girls give me some ideas. is there any other way apart for getting a swirl pot??
:wiggle
You can buy tank baffles but not having one im unsure how good they are, have a search on rx7club.com.
What fuel pump have you got?
forgot to mention, single turbo using a GTR pump.
change the pump - i used to get the same and Re:Worx put a pump in that was about twice the size of what i had (which was already aftermarket) and it cured it completely. I almost ran out of fuel at my last trackday as it never happened!
Andy
The stock tank has baffles installed, but they aren\'t the best. You could try a different pump or installed a swirl pot.
Fish
i have been thinking about a swirl pot for a while but i dont really want to go down that route if i can help it.
andy do you know what pump Re:Worx put in there and at what cost??
I think you\'ll find that the gtr pump is fine even with very little fuel in the tank. You may want to check how it\'s been installed.
rgds
Brian
Have a look at this.
http://www.rx7club.com/showthread.php?t=694665
It seems a very good idea and with the price of the dollar now, a bargain as well.
Quote from: Shiuko;500847Have a look at this.
http://www.rx7club.com/showthread.php?t=694665
It seems a very good idea and with the price of the dollar now, a bargain as well.
I\'ve got one of those covers being fitted at the mo - shoud be able to report back in a few weeks what difference it has made. Like you say - with the value of the dollar it seemed worth a gamble!
Si.
Quote from: karl_tate;500686forgot to mention, single turbo using a GTR pump.
That\'s odd Karl - I\'m running the BNR33 pump (which I guess is the same one?) and have no issues even down to fumes. Could be the positioning of the pickup in the tank not being quite right? Maybe the hose is bent uo and not sucking from the bottom corner of the tank.
Edit: just seen Brian\'s response, great minds and all that!
that looks interesting on rx7club cheers.
i will take the pump out and report back. i did have it out before just to check weather it had been uprated and all looked ok but it didnt have a filter/sock.
(http://img.photobucket.com/albums/v374/astragsi/Photo-0012.jpg)
(http://img.photobucket.com/albums/v374/astragsi/Photo-0011.jpg)
You can get an intank swirl pot from Fujita Engineering.. Think i seen it on RHDJapan... Cheap enough too...
Andy
Cor dear who installed that?
rgds
Brian
it was like that from japan, what makes you say that?? ive never dealt with uprated internal fuel pumps before so i just assumed it looked ok??
will have a look on the FEED website, thanks
Can someone quickly explain what happens with fuel surge?
Quote from: T11MNM;501115Can someone quickly explain what happens with fuel surge?
If you have the foot to the floor its like hitting a brick wall all of a sudden..
No petrol getting to the engine... Very bad!!
Quote from: AndyGen3;501150If you have the foot to the floor its like hitting a brick wall all of a sudden..
No petrol getting to the engine... Very bad!!
Not for the engine builders...Im sure they love fuel surge!! ;)
it says that mazda sorted the prob in 96 cars, so does that mean my 97 RS will already have a plate fitted? just wondered lol
@ Interloper : Id say its for people with aftermarket pumps only... Mines way smaller than standard and doesnt sit very well in the tank...
Heres the item i was on about... Will be gettin one for mine soon enough...
http://www.rhdjapan.com/jdm-low/FEED-Intank-Collector-Tank-FD3S-RX-7-51683
(http://i25.tinypic.com/1530f45.jpg)
Quote from: karl_tate;501107it was like that from japan, what makes you say that?? ive never dealt with uprated internal fuel pumps before so i just assumed it looked ok??
will have a look on the FEED website, thanks
Just suprised someone would install afuel pump with no sock. Put a stoc sock on and you will be fine.
rgds
Brian
I have the bnr33 fuel pump, and a sock. Often run mine down to the light coming on. Haven\'t had any issues with mine.
hmm, sounds i may just need a sock then but surely this cannot be causing the issues??
where could i get a "sock" from??
cheers
guys
A sock isnt going to help....the problem you have is drawing air when the car goes round a bend and the fuel goes to one side! A sock should be fitted to act as a basic filter, although most are about 90microns so will only stop rocks!
yeh realise its the air getting sucked up, may be my pump is not sitting right in the tank if others dont have problems??
it mainly does it when im giving it beans and usually happens around 4-5k when full boost is reached
Quote from: karl_tate;501687yeh realise its the air getting sucked up, may be my pump is not sitting right in the tank if others dont have problems??
it mainly does it when im giving it beans and usually happens around 4-5k when full boost is reached
I have driven many fd\'s hard with the skyline pump and none suffer the issue you have. The only difference between yours and the one\'s I have installed and driven is that it has been installed properly where the pump sits at the right height, and they have a sock fitted.
rgds
Brian
is that with single turbo and 1650 secondaries as well?? if so seems i need to do some work with it which is good cause it wont have to spend much this time lol :D
what is the best angle for it to be installed at??
I had exactly this problem ever since Reworx fitted a Bosche 040 pump along with bigger primary injectors to my car. I experimented with the height but this made no difference whatsoever. Their solution at the time was to fit a swirl pot and another lift pump. Unfortunately, shortly after this one of my tips went and I needed a rebuild. It is at Carl\'s at the moment for mapping, and on his advise have changed the pump to an 044 as he thinks this may help alot with this problem. It will be interesting to see if it does. I will be finding out shortly!
im going down the fuel tank foam route,i have a freind helping i\'ll post up the pictures when ive finished ,i didnt want a swirl pot for smell and saftey reasons
Foam will only prevent slosh
make sure you select the correct foam for the grade of fuel
but it isn\'t going to solve the problem alone....sorry
you need to get a collector to sit inside the tank as well
COuld it be a cloggged filter because of running without a sock? I.e. the pump can supply enough fuel to keep the engine going up to full boost, but at that point it just cant flow enough through the dirty filter so it feels like fuel cut but is just fuel shortage?
we are doing a custom/pikey collector as well i\'ll let yeall know how it goes :Giggle
what do you guys think of this. http://www.demon-tweeks.co.uk/products/ProductDetail.asp?cls=MSPORT&pcode=EXP10L
you do realise this is a thread from May last year?
2009 is so overrated...
Quote from: bnaellis;500846I think you\'ll find that the gtr pump is fine even with very little fuel in the tank. You may want to check how it\'s been installed.
rgds
Brian
Brian is right. I have a GTR pump installed by RE:WORX, it had been modified by HKS in such a way that it doesn\'t require a swirl pot. Speak to RE:WORX
The reason the swirl pot is there, and without wishing to sound too patronising, to keep a head of fuel when the fuel level within the tank starts to decrease.
I don\'t see how a modified fuel pump can remain in a head of fuel???
Quote from: strange_days_uk;643045Brian is right. I have a GTR pump installed by RE:WORX, it had been modified by HKS in such a way that it doesn\'t require a swirl pot. Speak to RE:WORX
I also have that same pump. When i first got the car it used to fuel surge awfully as soon as it got to half a tank.
ReWorx fitted this same pump and I have never had a problem since; i can run the tank until it coughs empty.
This is on trackdays and sprinting, so its hard use.
I asked about swirl pots and such and they said i wouldn\'t need one if i put this pump in. They were right.
Andy
hmmm, well i have just bought a 044 to try and cure this problem and do something with my setup, now thinking i should keep the gtr pump :confused:
do you know what pump you had in there before andy??
i run a 044 and have no probs :)
i can try taking my pump out to see how its fitted if you like?
there must be a right and wrong way to fit it for so many people to have surge problems...
Im using the r33 gtr pump with 1650 secondaries, aeromotive reg and single tub, Not seen any problems yet but I did fix the pump about 2mm off the bottom of the tank with the standard sock fitted directly to the bottom. I\'d say proper fitting is the key also worth checking the live and earth at the pump
cheers for the offer malice, would be good if you dont mind.
if you look at the first page you can see how my current pump is fitted to the standard holder. maybe the gtr pump is too high, i dont know, have never looked right into the tank to see where my pump sits.
If you don\'t have the right kind of filter you will most definitely magnify this issue with the bosch 044.
rgds
Brian
im not sure i understand what you mean brian??
Quote from: karl_tate;643159im not sure i understand what you mean brian??
Ful startvation isues will be magnified if you do not have the right kind if pre filter when using the bosch 044 pump.
rgds
Brian
sorry, i mean why would it be worse?? surely a filter is a filter?? so what filter should i use with the 044
Quote from: karl_tate;643168sorry, i mean why would it be worse?? surely a filter is a filter?? so what filter should i use with the 044
The 044 sucks very hard and it does not have a normal sock fitted due to the connector at the bottom of the 044. You will find some of the filters that connect to the 044 pumps when the pump sucks the fuel up it causes the filters to collapse and you get fuel starvation. The Jay racing off filters suffer from this. So all i\'m saying is depending on what filter you use can magnify the issue you currently experience, because the 044 does not use a normal sock/filter and the 044 pump sucks so hard.
rgds
Brian
Thanks for that. So I need 2 get one from bosch then designed for the 044
Quote from: karl_tate;643238Thanks for that. So I need 2 get one from bosch then designed for the 044
I gonna be running 2 bsch 044 intank I have got some pre filters that hsoul be compatible but don\'t wan to recommend something base simply on what I research but rather on experience. so hence I have not recommened the one I have as I have not actually used it yet. I can however tell by the design that it will collapse like the jay racing ones do. If you want to try what I got based on research rather experience then I\'ll PM you.
rgds
Brian
Ok cool. Sounds like you have some good plans.
Im going to ring a bosch supplier later today and see what they say.
Yeh pm me what you have found if you dont mind.
Thanks again
I don\'t think Bosch has an \'off the shelve\' filter for it. I\'ve been looking for ages and I know people at Bosch.
The closest I got was this
http://www.pegasusautoracing.com/productdetails.asp?RecID=5812
http://www.pegasusautoracing.com/productdetails.asp?RecID=5813
Can i ask if the sock is 90 microns what is the filter normally??
pegasus in design is better than the jay racing filter, but I have not personally ran mine yet so can not advise from experience.
rgds
Brian
Our one is fine...and will not suffer from the problems of collapsing.
It is 90 microns
lol.........
that pegasus one looks interesting.
i PM\'d you guys yesterday but no reply, what kind of price is it and do you have any pictures??
This is the post with the cost in it
http://www.mazdarotaryclub.com/forums/showpost.php?p=632321&postcount=37
And this is a post of it fitted with pictures
http://www.mazdarotaryclub.com/forums/showthread.php?t=59612
thanks for that, will be in touch soon :)