VVT ideas and testers
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Re: VVT ideas and testers
That seems a little excessive. y8s has proved good results with just a single jumper wire.
James
James
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Re: VVT ideas and testers
nah I added a connector so the expander and mainboard were no longer tethered like a wacky electronic nunchaku.
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Re: VVT ideas and testers
Just on the one wire or something else? (confused.)y8s wrote:nah I added a connector so the expander and mainboard were no longer tethered like a wacky electronic nunchaku.
James
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Re: VVT ideas and testers
Yes so I can separate the two boards. it's simple, not requiring confusion at all.
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Re: VVT ideas and testers
I need some advice.
I'm going to retrofit MIVEC to a Mitsubishi 4g63, but using megasquirt to control the cam(s) I just need to know, does the feed back system need high resolution wheels?
Running missing tooth on crank and single tooth on cam the Int Cam uses the main sensor single tooth suffice what is it reporting every revolution?
I'm going to retrofit MIVEC to a Mitsubishi 4g63, but using megasquirt to control the cam(s) I just need to know, does the feed back system need high resolution wheels?
Running missing tooth on crank and single tooth on cam the Int Cam uses the main sensor single tooth suffice what is it reporting every revolution?
Eagle Talon TSI AWD (4g63)
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Flyback before and after
I ran my diode cathodes to the +12 input and captured the new signal. Improvement is remarkable.
This mod is probably necessary for almost anyone that wants to run VVT.
This mod is probably necessary for almost anyone that wants to run VVT.
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Re: VVT ideas and testers
Bug or ?.
I have the intake cam VANOS running relatively well when it's synched to cam, but nothing works when I change to control interval. Duty cycle is stuck at 0.
Ideas?
I have the intake cam VANOS running relatively well when it's synched to cam, but nothing works when I change to control interval. Duty cycle is stuck at 0.
Ideas?
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Re: VVT ideas and testers
"Control interval" fixed for alpha 15
James
James
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Re: VVT ideas and testers
Anyone ?MidShipCivic wrote:I need some advice.
I'm going to retrofit MIVEC to a Mitsubishi 4g63, but using megasquirt to control the cam(s) I just need to know, does the feed back system need high resolution wheels?
Running missing tooth on crank and single tooth on cam the Int Cam uses the main sensor single tooth suffice what is it reporting every revolution?
Eagle Talon TSI AWD (4g63)
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Re: VVT ideas and testers
I don't understand your question. What is Intcam ?
What wheels are you planning on running?
Something like 36-1 on the crank and single tooth on the cam would be fine - so long as the cam tooth is far away from the missing tooth region so it never crosses it.
James
What wheels are you planning on running?
Something like 36-1 on the crank and single tooth on the cam would be fine - so long as the cam tooth is far away from the missing tooth region so it never crosses it.
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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Re: VVT ideas and testers
Int. cam = Intake cam.jsmcortina wrote:I don't understand your question. What is Intcam ?
What wheels are you planning on running?
Something like 36-1 on the crank and single tooth on the cam would be fine - so long as the cam tooth is far away from the missing tooth region so it never crosses it.
James
I'm asking about the feed back system for the camphasing it has to know position. Doesn't it need a high resolution sensor?
I am retrofitting it I just need some advice on what wheels to use for it.
On the crank I use a GM 60-3 crank trigger wheel.
Eagle Talon TSI AWD (4g63)
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Re: VVT ideas and testers
That should work.
James
James
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Re: VVT ideas and testers
I mofified the flyback on the MS3X board last week by jumpering to +12v and had a significant improvement in my signal, much more efficient. There was still some troubling spikes, however.
I changed the 6 diodes to Shottky diodes and was able to eliminate those spikes. I haven't noticed a difference, but noise spikes have a pesky way of propagating and messing up other functions. I used Digikey part #MBRS360BT3G
I changed the 6 diodes to Shottky diodes and was able to eliminate those spikes. I haven't noticed a difference, but noise spikes have a pesky way of propagating and messing up other functions. I used Digikey part #MBRS360BT3G
Re: VVT ideas and testers
can you please post a picture with spots marked where these need to be replaced. i've got a bunch of those diodes on order.
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Re: VVT ideas and testers
They're only $0.65 each and it took me a few minutes to replace them. Remember to remove any residual flux if you use fresh solder... it's acid!gurov wrote:can you please post a picture with spots marked where these need to be replaced. i've got a bunch of those diodes on order.
Re: VVT ideas and testers
great.hoveringuy wrote:They're only $0.65 each and it took me a few minutes to replace them. Remember to remove any residual flux if you use fresh solder... it's acid!gurov wrote:can you please post a picture with spots marked where these need to be replaced. i've got a bunch of those diodes on order.
is that tan wire going straight to +12v ?
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1994 Supra - ms3pnp pro - j&s
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Re: VVT ideas and testers
You might be missing a trick here.
Does the behaviour of the VVT solenoid actually change?
If yes, then good work.
If no, then why change the diodes !
James
Does the behaviour of the VVT solenoid actually change?
If yes, then good work.
If no, then why change the diodes !
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
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Re: VVT ideas and testers
Yes.gurov wrote: is that tan wire going straight to +12v ?
No difference in how the VANOS works with Schottky. Changing the diodes might be overkill, but it also might clear-up an unrelated issue somewhere else; that noise could be going anywhere...jsmcortina wrote:Does the behaviour of the VVT solenoid actually change?
If yes, then good work.
If no, then why change the diodes !
James
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Re: VVT ideas and testers
Also, the 36V clamps in the scope shot is by design. I'm sure you realised that, but for other readers it is the same kind of clamp used in the injector flyback circuit.
James
James
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Re: VVT ideas and testers
Yes, the active flyback was designed correctly, it's used on mainboard batch injection but not on sequential fuel. I honestly don't know why it behaves that way on MS3X medium current outputs. Is it the IPS022G MOSFET? The frequency? the PWM?jsmcortina wrote:Also, the 36V clamps in the scope shot is by design. I'm sure you realised that, but for other readers it is the same kind of clamp used in the injector flyback circuit.
James