COP Thread
#865
Boost Czar
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having the entire harness makes the build so much simpler/easier/cheaper. i think i spent about 10 minutes building brad's harness. basically all four wires on the each coil have a separate wire. so you just gotta combine the 12v, ground, and tach wires out to one each, then combine the 2&3 and 1&4 triggers. simple. spacing is perfect too.
#867
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My connector shells will be here monday so I'm getting ready to build my harness... I do have a question however.
Since I had to do the Tach output mod on my megasquirt, do I need to even wire up the tach pins on the COPs?
Since I had to do the Tach output mod on my megasquirt, do I need to even wire up the tach pins on the COPs?
#869
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I also forgot to mention, I don't plan on keeping this specific car forever which is another reason I'm attempting to retain a PNP install for everything. Thus far Everything I've done can easily be returned directly to stock in a few hours. Am planning on selling the car as Stock condition in a couple years to find a newer model to play with.
#872
I am not familiar with the tach support of the Toyota COPs (do they switch the tach pin to ground on falling edge), neither with the Megasquirt tach mod (if it does the entire square wave like the '95-1/2+ ECUs then you won't have to connect tach wires to the coils)
#873
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well I don't have a scope to bench test what the output is, but I'll run it up to my brothers office wed and check it with their equipment just to make sure. Think it'd be safe to assume that it DOES output the square wave for tach.. but I'll check and report.
#875
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eBay for coils
http://www.discounttoyotaparts.com/ for plastic connectors
Braineack for connector pins
http://www.discounttoyotaparts.com/ for plastic connectors
Braineack for connector pins
#877
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Update:
Didn't get to my brothers office yesterday, but day I did confirm that the Tach output from megasquirt does give a 12 volt square wave for tachometer using this circuit:
Figured out another small problem... The photograph I took of that connector a week or so ago isn't the same as my 1995. Come to find out mine has the "late" 1.8 4 pin plug on it, so my coils don't give the ECU ANY feedback on tachometer where the 1994 does. Hopefully this tach output mod will infact get my tachometer reading correctly.
Problem:
How the hell do you check/set your timing with COPs??? My timing light (and every timing light I can find..) only has the inductive pickup!?
Didn't get to my brothers office yesterday, but day I did confirm that the Tach output from megasquirt does give a 12 volt square wave for tachometer using this circuit:
Figured out another small problem... The photograph I took of that connector a week or so ago isn't the same as my 1995. Come to find out mine has the "late" 1.8 4 pin plug on it, so my coils don't give the ECU ANY feedback on tachometer where the 1994 does. Hopefully this tach output mod will infact get my tachometer reading correctly.
Problem:
How the hell do you check/set your timing with COPs??? My timing light (and every timing light I can find..) only has the inductive pickup!?
#879
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Really? Kick ***! I was gettnig worried about that. Thanks mang!
Btw: Any chance you'd sell me a retainer bracket for the coils? I don't have the tools available to make one worth a **** anymore
Btw: Any chance you'd sell me a retainer bracket for the coils? I don't have the tools available to make one worth a **** anymore