Use the fuel pump relay out of a VL V8 Commodore (I think .... ?) - they sense the ignition pulses and so turn on the fuel pump. Nothing else needed.
Hi all,
Have spent quiet a bit of time trying various relays and circuits to get some kind
of safety cut out working on solex/18rg . so far have been unsuccessful. ( i accidentally
blew the regulator yesterday )
I have tried the thread below, however hatch backs don't use a oil pressure switch
otherwise that diagram would work fine.
http://www.toymods.net/forums/showthread.php?t=7462
Edit:
Thanks to everybody who sent some suggestions, I have found the LPG safety cut the
most compatible. a schematic for wiring one up is below. I have just finished wiring it up
and works well. And thanks to wayne for mentioning the pump check.
Drawing was made big to be printable.
cheers.
http://i61.photobucket.com/albums/h5...psafteycut.jpg
Last edited by mike1980ra40; 25-01-2008 at 02:43 PM. Reason: adding schematic
Use the fuel pump relay out of a VL V8 Commodore (I think .... ?) - they sense the ignition pulses and so turn on the fuel pump. Nothing else needed.
www.billzilla.org
Toymods founding member #3
Thanks for that, "the simple things in life are often the best"
will visit wreckers in few days (while i get new regulator). once I get it sorted
I'll put up I diagram of it. theres lots of people out there running pumps off the ignition
with no cut out ... hopefully this'll help
cheers.
Just make sure I have the right Commode, it might be a different model.
www.billzilla.org
Toymods founding member #3
Hi i have done this mod..
relay: use a 30amp-40amp relay
30 - battery - 20A fuse
85 gnd
87 to pump
86 ig feed (make sure its full+12v when starter motor is cranking)
Hope this helps
AUSTRALIA'S OWN SUPERCHARGED DRAGONS........
BLUEWIRE MOTORSPORT www.bluewiremotorsport.com
Thanks bluewire that was a great help, one step closer to sorting it out.
this is what I did
relay 1 - narva 30amp 5pin
87 - start feed (ST1 on ig barrel) (think is 87A not specified on the relay itself)
86 - ig feed (from ig barrel)
87 - to pin 30 on relay 2
85 - so far to nothing - empty pin
30 - so far to nothing - empty pin
relay 2 - 4 pin - as you mentioned above
86 - to 87 on Relay 1
86 - gnd
30 - batt +
87 - pump and temporary test light
with IG on and engine not running pump is off and is test light.
cranking engine test light comes on and pump is running
after engine is running the test light goes out, pump not running, so i need to find a 12V
supply only when engine is running. so perhaps tapping into one of the alternator outs
will keep the pump running ...
cheers
The VK EFI 6 cylinder has the same relay also.Originally Posted by Billzilla
Its called a tachometric relay (gas conversion companies may also stock them). They do cost around $100 or something brand new..so best to find one in a wrecker.
Rudi
1977 RA35 Celica GT - I4 | 2007 GSV40R Aurion - V6
Don't live life being scared of death, live in the fear of not truly living. RP 2012
I think XF falcons with efi also use them. They are like a taller version of a standard relay with 2 extra pins. Or as suggested, go to a LPG installer and get a tachometric relay.
Brad
Old Corollas never die...
My KE30
Updated 15/7/2007............ yes, I need to pull my finger out.
Thanks all, will be putting in the tach relay in the next few days got my hands on one
so all looking pretty good so far.
cheers
or you wire it up so no oil pressure = no fuel pump.
Just ring me....
i've got the parts you will need...
cheers
Project: '82, GA61 XX
many many volvos have them.
(tachometric relays that is)
"I'm a Teaspoon, not a mechanic"
"There is hardly anything in the world that a man can not make a little worse and sell a little cheaper" - John Ruskin (1819 - 1900)
AU$TRALIA... come and stay and PAY and PAY!!! The moral high horse of the world!
Can anyone shed some light on the pinouts of the VK tachometric relay? Some are easy and just the same as a normal relay. But there are a few extra ones I'm not sure about.
Oh and they are very easy to find. A walk round pick-a-part netted me two. They look like a tall relay with two small extra pins in the base.
Hen
I need a working 4AGE bottom end. Pref smallport GZE, but all others considered. Also complete motors.
Drift Volvo. Was fun. 2JZ next time.
hi there,
OC - was at a wreckers today looking at volvos , looked at some 740's and gave up on
them, i think they must make the dash then build the whole car around it, buggers to get into.
Hen, cant help with commodore tachy relays but if your stuck, try the schematic i added
above in the first post ....
cheers.
Here you go.Originally Posted by Hen
Brad
Old Corollas never die...
My KE30
Updated 15/7/2007............ yes, I need to pull my finger out.
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