Glow plug timer mod, what glow plugs?

[Lemo79]

ummmm now i'm confused, my 3L direct injection engine does have glow plugs, they are located under the intercooler I can see the bus bar running to them, and 4 rubber bungs at the top of them

Yes they do, I am going to do the mod when I get off my but, when I do though I was going to maintain the ceramic plugs or replace with ceramic plugs as I thought the idea of the timer was to prolong the life of the ceramic plug. My understanding was the ceramic plugs were only loosing tips due to being on for the 5min and being blasted by the injectors during that time. Better safe than sorry though, but do you need to do the timer mod if you replace them with metal tips?

Lemo.

[Rickie3]

From what I read these are the glow plugs required when doing the mod http://www.ebay.com.au/itm/4-Glow-Pl...item1c337e4334

[Yendor]

Yes they do, I am going to do the mod when I get off my but, when I do though I was going to maintain the ceramic plugs or replace with ceramic plugs as I thought the idea of the timer was to prolong the life of the ceramic plug. My understanding was the ceramic plugs were only loosing tips due to being on for the 5min and being blasted by the injectors during that time. Better safe than sorry though, but do you need to do the timer mod if you replace them with metal tips?

Lemo.

I did the same on my old Patrol, keep the ceramic plugs and installed the timer.

If you are installing metal tip glow plugs you need to do the timer mod. The metal glow plugs will burn out very quickly if you don't.

On the DIs the ECU keeps the glow plugs on until engine temperature reaches 75°C

[Rickie3]

Below is the timer i'm using got it at Jaycar $32 as i'm going to use the metal glow plugs

[Rumcajs]

I have done this mod including fitting overide switch and also hacking the dashboard indicator to work with it.
I did fit new ceramic glow plugs, with the timer they will outlast the engine.
Metal tip glow plugs are cheap arse and will fail even with timer they will probably last at best 50,000 kays. Ceramic ones lasts 100,000 km with standards 5 minutes glow time so with timer at 30 secs I have no intention of doing the job again.

Cheers

Here is my take on it ==>

[Lemo79]

Below is the timer i'm using got it at Jaycar $32 as i'm going to use the metal glow plugs

Did you get the timer online from Jaycar or in store, and is it a stock item? Reason I ask is I don't have a Jaycar I can just walk into.

Lemo.

[Rickie3]

I did fit new ceramic glow plugs, with the timer they will outlast the engine.
Metal tip glow plugs are cheap arse and will fail even with timer they will probably last at best 50,000 kays. Ceramic ones lasts 100,000 km with standards 5 minutes glow time so with timer at 30 secs I have no intention of doing the job again.

Cheers

Ok that does make sense, what part number are the ceramic plugs that you used Rum? as I will put new ones, now you mentioned what you did I dont want to be having to replace glow plugs every 12 months

[Rickie3]

Did you get the timer online from Jaycar or in store, and is it a stock item? Reason I ask is I don't have a Jaycar I can just walk into.

Lemo.

I bought mine in store Lemo, but heres the online addy if you want to order http://www.jaycar.com.au/productView.asp?ID=AA0364

[Yendor]

Ok that does make sense, what part number are the ceramic plugs that you used Rum? as I will put new ones, now you mentioned what you did I dont want to be having to replace glow plugs every 12 months

I got mine from Nizzbits. Send him a PM with your vehicle details and delivery post code and he will give you a quote.

[Rumcajs]

Ok that does make sense, what part number are the ceramic plugs that you used Rum? as I will put new ones, now you mentioned what you did I dont want to be having to replace glow plugs every 12 months

I used NGK CZ71 (6836)
I have downloaded entire NGK catalog and for ZD30 from 00-05 CZ71 are to be used if OEM NGK are fitted.

NGK website lists also CZ258. I don't know what the difference is.

Edit: Managed to find a little info about it; CZ258 supersedes CZ71

Nissan OEM glow plugs have NGK CZ21 with blue paint markings (fitted to mine 05 model). There are two types listed in manual the other have yellow marking they should not be mixed.

Cheers