These are the original glow plugs from a B6000. They say Y-107-1, 46 and 10.5V on both of them.
They measure 971mΩ and 989mΩ which would make for 10.8 or 10.6A current draw respectively at 10.5V.
There are a couple other threads of interest:
On this thread there are a few people saying they had shorter glow plugs than the Y-107-1. I'm not sure which is original but I'm guessing it's Y-107-1 as seems to be more common.
Over here someone tested their glow plugs and found them to be 9.65A at 10.5V which makes them 1088mΩ, not far off mine.
I sometimes had a bit of trouble getting the B6000 to start when it was in use a long time ago. But I never understood back then that these glow plugs require at least 20-30s of preheat time (the sticker had worn off).
There's a bit of useful information on glow plugs at these two links:
www.ngksparkplugs.co.za
I've also attached several of the best resources I could find about glow plugs. They are all well worth a read.
My understanding after reading all of that info is the following:
Glow plug heating time is mostly all about the glow plug and controller, not the engine (although some engines will require less pre or post heating etc). So it seems feasible to upgrade to a better glow plug and controller. The Y-107-1 is the oldest and slowest type of metal sheathed glow plug. There are various types that it could potentially be replaced with. I think anything that works mechanically should be fine if the right controller is used.
The original Y-107-1 glow plugs are hard to find and expensive in New Zealand. They are available if ordering internationally for $35 NZD ea for two or $23 ea for four. I found some cheap and fast glow plugs on clearance at Repco that might work. They are NGK 1229 Y-107R for $16, HKT CP07 for $11 and an unknown one for $4.
The NGK 6625 Y-107V is a Rapid Glow, 6628 Y-017T is Fast Rapid Glow, 1229 Y-107R is QGS (it says AQGS at the link, not sure that's correct though). NGK 5287 CY57 is ceramic self regulating and is included as it's similar to the HKT CP07 glow plug I found.
The Y-107V or Y-107T look like they might be a drop in replacement for the existing glow plugs although you'd still have to be careful not to hold the key on too long or it might burn them up even though they regulate temperature somewhat. The HKT CP07 (which I think is ceramic self regulating) may also be a drop in replacement. It seems a little different mechanically though and not sure if it's supposed to have reduced voltage going through it after it's heated up. As it's ceramic it should be capable of higher temperatures and might be a better choice for afterglow.
I think I'm going to get the Y-107R glow plugs. They should fit well mechanically and provide pretty fast heating. I think these may be single coil, so no inbuilt temperature regulation. I will need to make or buy a controller for it. Repco has the Powertrain Glow Plug Timer 12/24v - DGPT100 for $67 and it looks fairly good. 1-20s preheat and 1-20s afterglow. It doesn't say much about the control scheme apart from afterglow is pulsed. I think i'd prefer to make my own controller so it's more integrated and I know exactly what it's doing.
My plan:
Try a similar setup to that in aqgs.pdf. I'm not sure the Y-107R is supposed to go as low as 6.5 or 5V as it says 10.5V on it. But it may be that the Y-107R is not designed for afterglow so it only has the voltage used for preheat on it.
On turning the switch to ignition, glow plug light will be red and it will preheat for a short time based on coolant temperature. Either at the equivalent of 10.5V with PWM or full battery voltage and using energy/joules instead of time. Glow plug light will then turn green and voltage/duty cycle will lower to maintain temperature for up to 30s. Voltage/current may be modified while engine is cranking. Afterglow will be applied at lower voltage/duty cycle until a certain amount of time is up or coolant reaches 70°C. Glow plug light will turn off when the glow plugs are off.
I won't get around to doing this for some time as the tractor is currently in pieces.
They measure 971mΩ and 989mΩ which would make for 10.8 or 10.6A current draw respectively at 10.5V.
There are a couple other threads of interest:
On this thread there are a few people saying they had shorter glow plugs than the Y-107-1. I'm not sure which is original but I'm guessing it's Y-107-1 as seems to be more common.
Over here someone tested their glow plugs and found them to be 9.65A at 10.5V which makes them 1088mΩ, not far off mine.
I sometimes had a bit of trouble getting the B6000 to start when it was in use a long time ago. But I never understood back then that these glow plugs require at least 20-30s of preheat time (the sticker had worn off).
There's a bit of useful information on glow plugs at these two links:
Glow Plugs - Construction & Technical Information | NGK
Use electric source of correct voltage and current as specified by the manufacturer. The glow plug will not be hot enough and may fail to start the engine
www.ngksparkplugs.co.za
NGK Glow Plugs | NGK
From the worlds No.1 spark plug manufacturer you’d expect nothing but the best from their glow plugs too; and you’d be right. NGK have been relentlessly
www.ngksparkplugs.co.za
I've also attached several of the best resources I could find about glow plugs. They are all well worth a read.
My understanding after reading all of that info is the following:
Glow plug heating time is mostly all about the glow plug and controller, not the engine (although some engines will require less pre or post heating etc). So it seems feasible to upgrade to a better glow plug and controller. The Y-107-1 is the oldest and slowest type of metal sheathed glow plug. There are various types that it could potentially be replaced with. I think anything that works mechanically should be fine if the right controller is used.
The original Y-107-1 glow plugs are hard to find and expensive in New Zealand. They are available if ordering internationally for $35 NZD ea for two or $23 ea for four. I found some cheap and fast glow plugs on clearance at Repco that might work. They are NGK 1229 Y-107R for $16, HKT CP07 for $11 and an unknown one for $4.
The NGK 6625 Y-107V is a Rapid Glow, 6628 Y-017T is Fast Rapid Glow, 1229 Y-107R is QGS (it says AQGS at the link, not sure that's correct though). NGK 5287 CY57 is ceramic self regulating and is included as it's similar to the HKT CP07 glow plug I found.
The Y-107V or Y-107T look like they might be a drop in replacement for the existing glow plugs although you'd still have to be careful not to hold the key on too long or it might burn them up even though they regulate temperature somewhat. The HKT CP07 (which I think is ceramic self regulating) may also be a drop in replacement. It seems a little different mechanically though and not sure if it's supposed to have reduced voltage going through it after it's heated up. As it's ceramic it should be capable of higher temperatures and might be a better choice for afterglow.
I think I'm going to get the Y-107R glow plugs. They should fit well mechanically and provide pretty fast heating. I think these may be single coil, so no inbuilt temperature regulation. I will need to make or buy a controller for it. Repco has the Powertrain Glow Plug Timer 12/24v - DGPT100 for $67 and it looks fairly good. 1-20s preheat and 1-20s afterglow. It doesn't say much about the control scheme apart from afterglow is pulsed. I think i'd prefer to make my own controller so it's more integrated and I know exactly what it's doing.
My plan:
Try a similar setup to that in aqgs.pdf. I'm not sure the Y-107R is supposed to go as low as 6.5 or 5V as it says 10.5V on it. But it may be that the Y-107R is not designed for afterglow so it only has the voltage used for preheat on it.
On turning the switch to ignition, glow plug light will be red and it will preheat for a short time based on coolant temperature. Either at the equivalent of 10.5V with PWM or full battery voltage and using energy/joules instead of time. Glow plug light will then turn green and voltage/duty cycle will lower to maintain temperature for up to 30s. Voltage/current may be modified while engine is cranking. Afterglow will be applied at lower voltage/duty cycle until a certain amount of time is up or coolant reaches 70°C. Glow plug light will turn off when the glow plugs are off.
I won't get around to doing this for some time as the tractor is currently in pieces.
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