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MS on a 10v

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 Post subject: MS on a 10v
PostPosted: Thu Feb 16, 2017 1:30 pm 
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To those that have gone megasquirt on 10v's, I have a question. On MS3 or MS3X, can you do single coil distributor ignition with just the 5 window dizzy as the timing sensor, or do you need to put a 60-2 timing wheel on? also, if it cant be done on MS3, can it be done on MS2?


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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 5:28 am 
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That's absolutely doable, on MS2 or MS3 (even MS1 I think).

Things you lose are the timing accuracy that comes with using a crank sensor, and the ability to do sequential injection or coil-on-plug ignition. That's because separate crank and cam sensors are required for those features.

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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 5:49 am 
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Well, this is just so I can drive the car because I haven't driven it in awhile. I need to break the clutch in and DD It a little. I will never makIngrid a new harness and doing cop and all that sometime in the summer


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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 6:51 am 
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Makes sense!

If you're planning on upgrading later, I'd strongly recommend going with the MS3+MS3X from the start. COP is doable with MS2 with a lot of hardware mods, sequential injection is pretty much impossible. With the MS3+MS3X, you just wire it up and go driving.

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'90 80Q with AAN and Megasquirt
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'86 4KTQ: R.I.P.


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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 7:09 am 
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Would you possibly be able to help me set it upossible firmware wise once I get to that point?


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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 7:16 am 
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mach 2 with my hair on fire
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Sure!

I don't know if you've seen this thread: http://www.motorgeek.com/viewtopic.php?f=6&t=43169 but I've been helping Dave a bit with his MS setup and it's worked out pretty well.

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'86 4KTQ: R.I.P.


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 Post subject: Re: MS on a 10v
PostPosted: Fri Feb 17, 2017 9:32 am 
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elaw wrote:
Sure!

I don't know if you've seen this thread: http://www.motorgeek.com/viewtopic.php?f=6&t=43169 but I've been helping Dave a bit with his MS setup and it's worked out pretty well.

I'm pretty sure he has seen it... :wink:

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 Post subject: Re: MS on a 10v
PostPosted: Sat Mar 04, 2017 11:31 am 
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elaw wrote:
I've been helping Dave a bit with his MS setup and it's worked out pretty well.


Yup Eric helped me out alot with my MS3 set up and crank sensor. I'm running MS3+MS3x with sequential fuel & COP and its worked out perfectly...! Its so easy to do with MS3+MS3x I wouldn't even consider anything else...


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 Post subject: Re: MS on a 10v
PostPosted: Sat Mar 04, 2017 2:08 pm 
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elaw wrote:
Makes sense!

If you're planning on upgrading later, I'd strongly recommend going with the MS3+MS3X from the start. COP is doable with MS2 with a lot of hardware mods, sequential injection is pretty much impossible. With the MS3+MS3X, you just wire it up and go driving.


How do you trigger 5 COPs with MS2?


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 Post subject: Re: MS on a 10v
PostPosted: Sat Mar 04, 2017 4:03 pm 
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You have to build custom circuitry to do it, but it's not terribly complicated.

If you look at the MS2 hardware manual at http://www.msextra.com/doc/pdf/MS2V30_Hardware-3.3.pdf and search for "spark e" you can see how it's done.

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'90 80Q with AAN and Megasquirt
'97 Saab 9000 Aero: mostly stock but ECU tweaks to add fastness
'86 4KTQ: R.I.P.


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 Post subject: Re: MS on a 10v
PostPosted: Mon Mar 06, 2017 12:32 pm 
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Ahh so it triggers off the outputs they normally use for the LEDs, etc. gotcha.

Maybe I'll make something custom around the msii module.


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 Post subject: Re: MS on a 10v
PostPosted: Wed Mar 08, 2017 1:32 pm 
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If you do decide to go down the MS2 route I've probably got an MS2 CPU lying around I'll gladly donate to the project...


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 Post subject: Re: MS on a 10v
PostPosted: Wed Mar 08, 2017 5:01 pm 
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I was kinda stretching when I said module... I'd probably just use the 9S12 (microcontroller) directly on the board. Thanks for the offer though!

I've been fiddling with reverse engineering some ECUs lately. If I had 20 years to figure it out adapting the ME7 ECU from a rabbit with 07K 5zyl would probably be ideal hardware wise... imagine software would be a nightmare. It's got 5 injectors, 5 COPs, wideband O2, etc. Of course unless you wrote 100% new software you'd need to adapt the 10V to DBW, among other things.


07k is a bit weird, like 1.8T has a inductive pickup on a 60-2 on the crank, and a hall sender at the cam to gate it. (which is pretty similar to what a 10VT has as well - it's just got two crank sensors instead of 60-2)

07k has hall on the crank (60-2, tiny wheel between crank and flywheel. looks like tin plate, no holes or nothing, must be somehow have strips of magnetism in it), and an inductive pickup on the cam. Not sure why the change. I think they used to have trouble with halls skipping high resolution stuff at high rpm (hence 60-2 was inductive)... guess that's not a problem with the magic wheel.


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