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Post by sparky on Dec 15, 2011 13:00:47 GMT 2
too many times have i seen electric fuel pumps being fitted to the older vehicles without the owners/mechanics taking safety into consideration, so i'm gonna share a little something with you guys and hope you find it usefull. firstly go get yourself a jetta 2/golf 2 (cli or gli) fuel pump relay costs between R80-00 and R120-00 take note the relay has 5 pins not 4 2 large pins are connected from your + feed to the + feed on the pump 2 medium pins are connected to your ignition and ground small pin is connected to your - terminal on your coil the point of this relay being safety....if your engine stalls due to an accident or whatever other cause it cuts out the pump thus no excessive fuel being delivered hope someone benefits from this may you guys have a blessed festive season and be safe Attachments:
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Post by Charles on Dec 15, 2011 13:11:23 GMT 2
Sparky that is a fantastic idea. Thanks for that.
Charles
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RATEL
Senior Niva Petrol Head
BOOYAH!!!
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Post by RATEL on Dec 15, 2011 13:17:56 GMT 2
Truly something to take into consideration and think about. . . Thanks sparky!!
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Post by ronnie on Dec 15, 2011 18:27:04 GMT 2
Hi Sparky
With a Niva when it it stalled you will have no problem as there is a return to tank line, so you will have no problem with pressure.
Ronnie
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Post by sparky on Dec 16, 2011 8:23:47 GMT 2
Hi Sparky With a Niva when it it stalled you will have no problem as there is a return to tank line, so you will have no problem with pressure. Ronnie Hi yeh i'm well aware of that thanx, the point of this little mod is when fitting an aftermarket electric pump in place of the mechanical 1..... unfortunately the return is gonna be pretty useless if the fuel line is severed in any way.
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Ladaniva
Full Niva Petrol Head
A Lada Niva for a new lease of life
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Post by Ladaniva on Dec 21, 2011 21:22:19 GMT 2
Hi Sparky,
Thank you very much for the information. I will surely get one of those relays!
Is it possible to let us have measurements/hand drawing of the parts you had made for the distributor mod, so that I may do the conversion? Or may I order it from you or your friend?
Regards,
Fanus
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half
New Niva Petrol Head
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Post by half on Jan 24, 2012 7:25:05 GMT 2
I may be missing something in the way I read the diagram ,but this will not stop the pump if the engine stalls with the electrics alive, until the ignition is turned off. looking at a normal engine, no fuel injection
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Post by sparky on Jan 26, 2012 13:54:31 GMT 2
I may be missing something in the way I read the diagram ,but this will not stop the pump if the engine stalls with the electrics alive, until the ignition is turned off. looking at a normal engine, no fuel injection relies on the motor to be turning over as to supply the coil via the dizzy
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Deleted
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Post by Deleted on Nov 25, 2013 18:18:58 GMT 2
Hi,
My speedo cable also broke a while ago. I was lucky, the outer was still in good condition, so I just undid the one end and pulled the inner out. I then had a new o e made up locally and If i recall correctly it cost less than R100.
I was the one who bought the second fuel tank steve was talking about, but haven't had time to fit it yet. Most duel tank set ups work with a separate electric pump to move the fuel from the auxiliary tank to the main one. The standard fuel pump then sucks the fuel from the main tank to the carb as normal.
Can you please update your location, this will help the guys to point you in the right direction when it comes to carb servicing
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Post by ronnie on Nov 26, 2013 0:34:26 GMT 2
Hi, My speedo cable also broke a while ago. I was lucky, the outer was still in good condition, so I just undid the one end and pulled the inner out. I then had a new o e made up locally and If i recall correctly it cost less than R100. I was the one who bought the second fuel tank steve was talking about, but haven't had time to fit it yet. Most duel tank set ups work with a separate electric pump to move the fuel from the auxiliary tank to the main one. The standard fuel pump then sucks the fuel from the main tank to the carb as normal. Can you please update your location, this will help the guys to point you in the right direction when it comes to carb servicing Hi Conrad I have fitted a number of dual fuel tanks into a few vehicles including a Niva. My own preference is for 2 pumps, one for each tank. If you do this you need to do away with the return to tank line. I used HUCO aftermarket electric pumps but found they could slowly back feed through each other and had to fit a solenoid valve in each line to cure this. One reason I do not like pumping from one tank to the other especially in the Niva is you are pumping from a large tank into a small one. There is a very good chance you will overflow petrol if you forget to switch off in good time. If you can fit a Niva float unit into the auxiliary tank you can fit a switch and use the petrol gauge for both tanks. In my Landy I pumped from a 40 litre auxiliary tank into a 130 litre main tank and this is OK. The only thing is it takes a long time to pump 40 litres from one to the other. Ronnie
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Deleted
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Post by Deleted on Nov 26, 2013 7:11:28 GMT 2
Hi Ronnie, what you say makes a lot of sense. Would it not be possible to use the standard mechanical pump up front, but then use two solenoids to alternate which tank it is able to suck from, or are two pumps in a setup like this really necessary.
I do plan to fit a universal fuel gauge to the second tank to give an indication of how much fuel is in there.
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Post by ronnie on Nov 26, 2013 10:53:43 GMT 2
Hi Ronnie, what you say makes a lot of sense. Would it not be possible to use the standard mechanical pump up front, but then use two solenoids to alternate which tank it is able to suck from, or are two pumps in a setup like this really necessary. I do plan to fit a universal fuel gauge to the second tank to give an indication of how much fuel is in there. Yes, you can use the mechanical pump and 2 solenoids with a change over switch. You will still need to do away with the return line or use 4 solenoids. It gets complicated!!!. The solenoids you can find in the scrap yards, they were widely used in aftermarket alarm systems to cut the fuel supply to the carburettor. If you could find an old Jag XJ6, they had a double SU fuel pump designed for dual tanks. Spares for these pumps are freely available here but I am not so sure about SA. You must make sure a universal float sender is compatible with a Niva gauge. You could instead use taps to changeover, but that would not suit me personally as I like to be able to change tanks on the move. If you intend keeping the vehicle for the long term it is worth spending the money so you can change over with a switch. Another reason I liked 2 pumps, we spent a lot of time far from civilization and this set up effectively gives you a spare pump. Ronnie
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Deleted
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Post by Deleted on Nov 26, 2013 16:37:58 GMT 2
I was planning on running a second fuel gauge for the auxiliary tank, as I'm sure the universal sender won't be accurate on he niva gauge.
I agree taps are a no go, and solenoid a with a switch are the way to go. It is however more complicated than a simple between pump to transfer between tanks. I'll have to give some serious thoughts to how I will do this. I want it to be both convenient but also simple and reliable
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Post by ronnie on Nov 26, 2013 19:50:26 GMT 2
Hi Conrad
One word of warning. If you decide to use electric fuel pumps EG Huco which looks similar to SU do not fit them under the bonnet as you will have percolation problems. I fitted Huco pumps to Ari`s Niva and they nearly drove me crazy in Savute. I moved them to under the small bin adjacent to the rear seat and never had any more problems. When I installed the AC in the last Niva I again fitted a Huco pump under the bonnet and again had percolation problems. I can`t remember the name of the pump, but Vincent had one of the American ones with a simple shuttle inside and it worked fine under the bonnet. Hope this helps.
Ronnie
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Post by ronnie on Nov 27, 2013 10:32:26 GMT 2
Was it perhaps a facet pump? Hi Conrad, Yes, that is exactly what it was. Ronnie
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Post by sparky on Dec 1, 2013 9:57:10 GMT 2
word of advice on electric fuel pumps, don't buy the cheapies....they will drop you, decide on whether you want a "push" pump or a "pull" pump....this will determine placement....DO add a fuel pump relay as an added safety feature, if needed i will put up the schematics for using a golf/jetta 2 relay
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