dbh86
What's a 16V?
- Joined
- Mar 22, 2005
- Location
- San Antonio, TX
PICTURES ARE ALL MISSING, OH NOES!!!!!
The purpose of this article is to explain a simple method to cleaning install Toyota COP coils into your 16V.
Materials:
4x Toyota Corolla '99-'08 coils, pn: 90080-19015
4x 0.1?F Capacitors
Either:
4x Pigtails for above coils
or
4x Toyota connectors: 90980-11885
16x TYCO pins: 173631
Setup
1. The coils are physically larger than the space the 16V head allows for them, but the offending parts of the coils are not particularly important. The mounting bracket and some areas of the sill below it must be removed. The picture below illustrates where the coil must be modified to fit in the 16V head.
2. The connectors for the coils can be fabricated by buying the outer plug and putting in new pins, but the new pins will require modification to lock into the plug. An easier method is to obtain the original connectors with the coils. The pins in the connectors for the coil, from left to right, are ground, signal/trigger, tach signal, and +12V. The picture below gives a clearer illustration of this:
Image needs updating with all 4 labels
3. The coils create quite a lot of noise when they fire and this may cause problems for your EMS. For example, a V2.2 MS will experience resets with these coils, but a V3.0 MS may or may not experience them depending on the wiring harness. Thankfully, a 0.1?F capacitor between the power and ground wires will help manage the noise from these coils.
4. The coils are fired through ground switching and they require a minimum of 7mA from a +5V pullup. For MS, use this ground switching routine, but with a 660 ohm resistor for each coil you are firing. If you are running wasted spark, you should run a 330 ohm or less resistor. It's up to you to choose what resistor you need to run. Remember, V=IR and Kirchoff's Current Law. I would recommend against exceeding more than 15mA per coil on the signal line.
5. These coils have ignitors built in and are semi-smart, which means they still rely on the EMS for dwell control but still have a protection circuit built in. People have had good results with dwell settings of 5ms cranking, 2.5ms running, and 0.1ms minimum. For those who are interested, an image of the optimal dwell curves is included below.
Image needed from link below...
Include some tach output related musings here...
Include some MS related stuff here...
Notes
-There are similar looking coils, but they may be different heights or different mounting brackets. The 19015 coils are the correct height for 16V applications.
-Ebay usually has sets available for less than $100. The sellers might include the pigtails if asked.
-The capacitors may not be necessary for your installation initially, but I would still recommend them in case the coils start causing problems later.
The purpose of this article is to explain a simple method to cleaning install Toyota COP coils into your 16V.
Materials:
4x Toyota Corolla '99-'08 coils, pn: 90080-19015
4x 0.1?F Capacitors
Either:
4x Pigtails for above coils
or
4x Toyota connectors: 90980-11885
16x TYCO pins: 173631
Setup
1. The coils are physically larger than the space the 16V head allows for them, but the offending parts of the coils are not particularly important. The mounting bracket and some areas of the sill below it must be removed. The picture below illustrates where the coil must be modified to fit in the 16V head.
2. The connectors for the coils can be fabricated by buying the outer plug and putting in new pins, but the new pins will require modification to lock into the plug. An easier method is to obtain the original connectors with the coils. The pins in the connectors for the coil, from left to right, are ground, signal/trigger, tach signal, and +12V. The picture below gives a clearer illustration of this:
Image needs updating with all 4 labels
3. The coils create quite a lot of noise when they fire and this may cause problems for your EMS. For example, a V2.2 MS will experience resets with these coils, but a V3.0 MS may or may not experience them depending on the wiring harness. Thankfully, a 0.1?F capacitor between the power and ground wires will help manage the noise from these coils.
4. The coils are fired through ground switching and they require a minimum of 7mA from a +5V pullup. For MS, use this ground switching routine, but with a 660 ohm resistor for each coil you are firing. If you are running wasted spark, you should run a 330 ohm or less resistor. It's up to you to choose what resistor you need to run. Remember, V=IR and Kirchoff's Current Law. I would recommend against exceeding more than 15mA per coil on the signal line.
5. These coils have ignitors built in and are semi-smart, which means they still rely on the EMS for dwell control but still have a protection circuit built in. People have had good results with dwell settings of 5ms cranking, 2.5ms running, and 0.1ms minimum. For those who are interested, an image of the optimal dwell curves is included below.
Image needed from link below...
Include some tach output related musings here...
Include some MS related stuff here...
Notes
-There are similar looking coils, but they may be different heights or different mounting brackets. The 19015 coils are the correct height for 16V applications.
-Ebay usually has sets available for less than $100. The sellers might include the pigtails if asked.
-The capacitors may not be necessary for your installation initially, but I would still recommend them in case the coils start causing problems later.
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