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Jun 24, 2014 19:53:10 GMT
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I now have a 2.7td nissan engine with the auto box out of the london taxi a 1997.I have had it running but what i want to know is it has glow plug relays how do i wire them up as they are not at the moment i just put the glow plug wire to live for a few seconds.So can i do away with the relays and have it wired the old way were you press a button on the dash for ten seconds or do i need relays.If i drop the engine in the truck with the gearbox is there anythink else i will need to get it running.I have the propshaft.Does the engine need to be at a angle or lean to one side.Thank
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Peace,Max signature height = 80px
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bortaf
Posted a lot
Posts: 4,549
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Jun 24, 2014 20:03:47 GMT
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Glow plugs draw a lot of amps (they are basicly a dead short) so they will likely melt any switch you use without a relay, needs to be a large relay as well the usuall spotlamp type wont last long  |
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R.I.P photobucket
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Jun 24, 2014 20:07:38 GMT
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Thanks for that.I have the original relays that come with the engine.Will it be hard to wire them up.Thanks
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Peace,Max signature height = 80px
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Jun 24, 2014 20:13:11 GMT
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no, usually very easy, they need an ignition switched live, and a permanent fused live of appropriate gauge, often they will have a telltale lamp with a connection to the relay too.
if its going on its original engine then the wiring should already be there, many will have a thermistor to alter the heating time.
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Jun 24, 2014 20:30:13 GMT
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they need an ignition switched live This is connected via your switch to trigger the relay, you only need normal automotive thickness wire for this side of the relay. The permenent live feed ideally needs a big fuse in it - i'm only guessing but i would think a set of glow plugs would pull maybe 40 or 50 amps so its got to be substantial thick wiring to handle the amount of current. Can you copy the angle the engine was sat at in the taxi chassis? That way you will know the dipstick will show the right levels and its not going to suffer to much surge of oil in the sump whilst you are doing high speed cornering |
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Jun 24, 2014 23:18:14 GMT
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Hi, use the wiring and relay set that came with the engine because it will have the right timer relay. If you aren't happy to do that a cheap heavy duty relay that will more than handle the current is a starter solenoid wired to a push button switch. To be honest you do need to know the length of the timer relay duration, because some engines have fast glow plug set ups and to have them on too long will blow them.
Colin
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Hi i don't have the wiring as the person i brought it off just cut the wires so i have no idea what wires go were.The good news is i do have the ecu timer box that goes with the glow plugs there is 13 wires that come out of the back of it and i do have the glow plug relay.
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Peace,Max signature height = 80px
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Search for SPST, SPDT or DPDT relay wiring. They are very simple and are basically a remote switch so the switch isn't on the same line as the thing it is meant to power on (ie remotely - a switch can power the 'switch' inside the relay to close and power the accessory such as a fuel pump). This way an ECU can switch the relay on and off just by sending 12v to one of the pins (or earthing it).
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