Really, really bad forced induction idea...


snoranger

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Yeah, but I can't pump my own gas and NJ has rather draconian CCW laws. I pump gas and carry often, I only get inspected once a year.
That would be part of the reason I said "I very very rarely get to say this".
 


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That would be part of the reason I said "I very very rarely get to say this".
If I could pick one state to move to right now it would probably be Missouri.

Much laxer inspections, every other year, good gun laws, and I can pump my own gas.
 

PetroleumJunkie412

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Well this is just cool.

_20190422_125609.JPG


That's the supercharger drive pulley off the Mercedes 2.3l on my 2.9l harmonic balancer.

_20190422_125548.JPG


The center bores are identical. Looks like I'll just have to have a machine shop drill four new holes to mount it to the balancer.

So that solves how to power it. Just left with computer stuff.

Holy crap this is coming together nicely.
 

PetroleumJunkie412

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Gets even better.

Supercharger pulley diameter is 3.7 inches. Mercedes crankshaft pulley diameter is 5.24.

That's 1.4 overdrive ratio.

Holy shit. Too perfect.

Or.



Screenshot_20190422-131526.png
 
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PetroleumJunkie412

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Also, possibly dumb idea (like this whole project isn't...)

So, it hit me today that if I do stay the course with MAF instead of a microsquirt, I have the option to run dual MAF sensors thanks to a Sierra dual TB intake I picked up from someone on the forum.

Let's say it's entirely possible for me to run both MAF sensors in parallel. I thought it would be possible, so I asked better engineers as myself. Turns out, with the following proposed device, you can run dual MAFs and still have one 0-5v signal.


Would running dual MAF sensors theoretically give me (approximately) double the MAF inner diameter?

In my head, it would be intake-blower-intercooler-splitter plate for two throttle body tracks-parallel maf senaors-dual throttle bodies

Thinking this may be the way to go if the math is correct...
 

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The principals should transfer pretty easily. But running dual intake tracts, to dual TBs, into a single intake channel like the Merkur intake, speed-density would probably be the easier and more accurate way to do it. Ford actually runs speed-density systems on the V6 EcoBoost engines. They have dual map readings, on either side of the throttle body, that are used to infer boost pressures and actual air flow, in conjunction with a Baro sensor. IIRC there is also an IAT before and after the CAC to help with the accuracy of the O2 density.

It's easier to try calculating the mass of air in the single channel of the intake than trying to calculate two different air charges coming in on separate tracts.
 

PetroleumJunkie412

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The principals should transfer pretty easily. But running dual intake tracts, to dual TBs, into a single intake channel like the Merkur intake, speed-density would probably be the easier and more accurate way to do it. Ford actually runs speed-density systems on the V6 EcoBoost engines. They have dual map readings, on either side of the throttle body, that are used to infer boost pressures and actual air flow, in conjunction with a Baro sensor. IIRC there is also an IAT before and after the CAC to help with the accuracy of the O2 density.

It's easier to try calculating the mass of air in the single channel of the intake than trying to calculate two different air charges coming in on separate tracts.
I'll probably only get say this once, but I do disagree with one item, which is the intake tracks. As far as I can tell, they are two separate tracks. It looks like it does have the ability to equalize through the pinhole for pcv/egr, but other than that, totally walled off from one another. Not entirely sure it's a merkur one. The UK ECU that came with it suggests it may be a foreign one that used dual VAMs originally. I know absolutely zero about a VAM system.

But the TBs rhat came with it even has a pinhole in the blade opposite the IAC
 

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If they are in fact totally separated banks then yes, a dual MAF would be a good way to do.

I will now teach you everything you ever need to know about VAM.

They are junk and you should stay far away. I once saw a Probe in a dumpster, and that is where it belonged. Probes used VAM.
 

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I will now teach you everything you ever need to know about VAM.

They are junk and you should stay far away. I once saw a Probe in a dumpster, and that is where it belonged. Probes used VAM.
I seriously cannot stop laughing at the mental image of a Probe sticking out of a dumpster. 😂😂

Thank you. I needed that



Not a Probe. Still relevant.

car-dumpster.jpg
 

adsm08

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I seriously cannot stop laughing at the mental image of a Probe sticking out of a dumpster. 😂😂

Thank you. I needed that



Not a Probe. Still relevant.

View attachment 26609
Yup, I was walking to class and cut behind the auto tech building, and next to the Ford lab was a dumpster with a Probe In it.

I'd have taken a picture, but this was in the days before quality cameras on cell phones were common.
 

PetroleumJunkie412

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Yup, I was walking to class and cut behind the auto tech building, and next to the Ford lab was a dumpster with a Probe In it.

I'd have taken a picture, but this was in the days before quality cameras on cell phones were common.
Had a buddy in high school that had one. He swore up and down that it was the best car ever made. Thinking about his hunter green smug-producing shitbox haphazardly tossed into a dumpster and maybe on fire a little made my day.
 

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I miss the Ford PROBE. I got a chance to drive a few. An '88 GT 2.0Turbo, fun to drive, to too fun to steer. Torque Steer was harsh. Then I drove a 94 GT with a 2.5L DOHC V6. Fast and fun to drive, less torque steer than the 88 for sure. Considering the Competition at the time, Eclipse GT, Celica GT, Acura Integra, It wasn't that bad of a car. Granted, I never had to work on one.
 

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I miss the Ford PROBE. I got a chance to drive a few. An '88 GT 2.0Turbo, fun to drive, to too fun to steer. Torque Steer was harsh. Then I drove a 94 GT with a 2.5L DOHC V6. Fast and fun to drive, less torque steer than the 88 for sure. Considering the Competition at the time, Eclipse GT, Celica GT, Acura Integra, It wasn't that bad of a car. Granted, I never had to work on one.
If you liked it, it automatically becomes terrible. :thefinger:
 

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