What is used for a coil driver for the ford COP coil?I wired up a megasquirt on a turbocharged datsun engine and that ran coils from a late model chevy 5.3l pick up engine.the chevy coils have built in driver transistors but they need a plug wire.I would like to run efi on my xr650r motor for better fuel mileage and altitude compensation.
'07 XR650L Fuel Injection Project
Started by uberhada, May 11 2011 12:37 PM
132 replies to this topic
Posted 09 March 2012 - 09:56 AM
You can use the optional Bosch BIP373 coil driver transistors available through MegaSquirt retailers like DIYAutoTune. That, or just use a GM coil with onboard igniter. Four-pin GM HEI modules make good "dumb" drivers and seven-pin modules work well for computer advance control, but they're both prohibitively large for a bike application and several times more costly than a BIP373.
Posted 09 March 2012 - 11:15 AM
proz07, on 09 March 2012 - 12:52 AM, said:
His issue is that that type of "noise" wont be the same as his particular engine. you can actually tap it with a hammer lightly on the sensor to "produce" a knock for sensor checking just to see the voltage change so you know its working. However to be usefull for his engine you must first have a base line noise limit of that engine before it knocks so you can tune the ECU to use that limit for detonation avoidance I.E. more fuel, less timing.
Essentially a knock sensor is only a microphone.
z
Essentially a knock sensor is only a microphone.
z
That pretty well sums it, the knocksense is trying to pick up the resonant knock frequency of the bore, which @ 100mm is 5.7kHz.
Posted 09 March 2012 - 11:41 AM
oldxr1, on 09 March 2012 - 02:07 AM, said:
What is used for a coil driver for the ford COP coil?I wired up a megasquirt on a turbocharged datsun engine and that ran coils from a late model chevy 5.3l pick up engine.the chevy coils have built in driver transistors but they need a plug wire.I would like to run efi on my xr650r motor for better fuel mileage and altitude compensation.
As Head Trauma mentioned, there are a few igniter options for Megasquirt, Microsquirt can drive two coils directly. A coil with a built-in igniter was going to be my other option, I think Delphi makes one that will do multi-spark but I didn't find a part number.
Altitude and temperature compensation are some of the things I'm interested in. We typically ride into the mountains and back, from sea level to 5,000 feet and up, and the bike feels a bit off up there. Once, coming up towards Tioga Pass on 395 it was really struggling to keep freeway speed, though given recent events, some of that may have been from weak compression.
One of my test destinations is going to be back up at Tioga Pass which is almost 10,000 ft. The observatories near Bishop are a bit higher but would be a stretch for a day ride.
Posted 09 March 2012 - 06:14 PM
New connectors for the CRF MAP and TPS are on the way, material stock for the airbox side adapter also.
I will probably send the injector out for a flow test, finding specs on motorcycle injectors has been tough and I have not found anything out there for this one.
I will probably send the injector out for a flow test, finding specs on motorcycle injectors has been tough and I have not found anything out there for this one.
Posted 09 March 2012 - 06:32 PM
Using a (junkyard) sensor from a simulir bore motor is what I did way back when. But the sensor is useless unless you have a way to count the knocks. If you start pulling timing back and fueling more just based on 1 knock signal you'll be rich and retarded. If you can';t build or find a counter you can rig it to a visible light, and tune by feel to a intermittent blinking.
uberhada, on 09 March 2012 - 11:15 AM, said:
That pretty well sums it, the knocksense is trying to pick up the resonant knock frequency of the bore, which @ 100mm is 5.7kHz.
Posted 10 March 2012 - 11:13 AM
highmarker, on 09 March 2012 - 06:32 PM, said:
Using a (junkyard) sensor from a simulir bore motor is what I did way back when. But the sensor is useless unless you have a way to count the knocks. If you start pulling timing back and fueling more just based on 1 knock signal you'll be rich and retarded. If you can';t build or find a counter you can rig it to a visible light, and tune by feel to a intermittent blinking.
Posted 16 March 2012 - 03:30 PM
NickInAlaksa, on 08 March 2012 - 03:33 AM, said:
Such an awesome discussion! Im new to this forum and I'm really excited to see people taking on these kinds of projects and sharing. The next step is for someone to manufacture a bolt on EFI/Turbo kit! And expect me to be the first customer.. Has anyone had any actual ride around success with this yet??
I'd be happy to help you get something going. I have turbos and EFI stuff ready for you.
Posted 19 March 2012 - 09:16 PM
Connectors and bits arrived for the CRF TPS and MAP, plus some extra pins to cleanup what I have.
Over the weekend I also finished up the adapter that goes between the TB and the airbox tube:
Over the weekend I also finished up the adapter that goes between the TB and the airbox tube:
Posted 20 March 2012 - 09:56 PM
Captain Midnight, on 20 March 2012 - 04:24 PM, said:
That looks excellant!
Thanks Captain
I think it came out pretty good for a first try.I'm waiting on a few other things but I should be able to test fit it this weekend.
Posted 20 March 2012 - 11:26 PM
hey, guess what???
they just brought out a new performance upgrade for 2014 mx bikes...... A CARBY!!!!
it shaves 3kg of weight from the bike, has super smooth response and is maintenance free and dont make your oil smell like fuel!!!
they are grrrreat!
but seriously, what are you hoping to gain from efi? i didnt have time to read it all.
they just brought out a new performance upgrade for 2014 mx bikes...... A CARBY!!!!
it shaves 3kg of weight from the bike, has super smooth response and is maintenance free and dont make your oil smell like fuel!!!
they are grrrreat!
but seriously, what are you hoping to gain from efi? i didnt have time to read it all.
Posted 26 March 2012 - 04:33 PM
Still waiting for a few pieces to get the fuel pump setup, but I got the injector back today.
I had sent the injector off to Pro Flow Technologies for flow testing since there doesn't seem to be much data available on these parts.
Good guys over there, Greg actually took some time to talk me about testing methods and other injectors in this form factor, which I really appreciate.
Inexpensive service, quick turn-around time and no-hassle work order system, I'll be sending my car injectors there for cleaning as well
So, the CRF250R injector flows 368cc/min @ 50psi, that should be fine for this application and the TB should be good to go.
I'm anxious to get the TB back together now and get on with the fuel system.
I had sent the injector off to Pro Flow Technologies for flow testing since there doesn't seem to be much data available on these parts.
Good guys over there, Greg actually took some time to talk me about testing methods and other injectors in this form factor, which I really appreciate.
Inexpensive service, quick turn-around time and no-hassle work order system, I'll be sending my car injectors there for cleaning as well
So, the CRF250R injector flows 368cc/min @ 50psi, that should be fine for this application and the TB should be good to go.
I'm anxious to get the TB back together now and get on with the fuel system.
