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> My MicroSquirt Install
McMark
post Jul 20 2008, 05:00 PM
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I'm installing a MicroSquirt system.

This thread IS NOT A MS/SDS/Carb DEBATE! If you don't like MS please leave. I'm tired of the endless, worthless debate.

Anyway, now on the the fun stuff!

I am using the TPS off of a Volvo 850 because it's a Bosch sensor (I like sticking with OEM manufacturers when possible), fits the D-shaft throttle and is appropriate for MS. I made the adapter plate today.




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McMark
post Jul 20 2008, 05:10 PM
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Here is the wiring harness I had Jeff Keyzer make me. We sourced all the correct, uncrimped connectors so each connector could be attached directly to the harness wires.
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The MicroSquirt unit is tiny, weatherproof, robotically soldered using surface mount components, and shielded from EMF. It was originally designed for motorcycles, but I think in our case, it's a much more appropriate choice than your standard MegaSquirt.
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The injector on the left is a custom made high-impedance injector that works perfectly in our manifolds with stock hold-downs, stock connectors, and will allow use of the stock fuel rails. No resistor packs necessary. (IMG:style_emoticons/default/thumb3d.gif)
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Gint
post Jul 20 2008, 05:33 PM
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Giddyup! Right on Mark. Microsquirt? Never heard of it. Price? Are the connectors readily available and not unobtainium? Where do those "custom made high-impedance" injectors come from? Price?

Screw all of that. When you getting working I might just be the first in line. (IMG:style_emoticons/default/laugh.gif)
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r_towle
post Jul 20 2008, 05:36 PM
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This looks very interesting.
Is the microsquirt just an off the shelf unit?
Injectors? also off the shelf?

Looks like a fun project and I would really love the hear the results, how easy it is to tune, and how much of a cam it may support....

Rich
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ejm
post Jul 20 2008, 05:42 PM
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They have an info page and forum
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ericread
post Jul 20 2008, 06:00 PM
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How about some background information?

4-Cylinder?
2.0L Engine?
Year?
Approximate cost for your conversion?

Sorry, but I am really interested in what the future will bring to our cars, and this information would really be helpful. What kind of tuning problems did you experience? And what is your anticipated gas mileage?

If this provides a really efficient motor that can be variably tuned for mileage and for performance, that would be really cool.

Thanks in advance.
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McMark
post Jul 20 2008, 06:01 PM
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This setup will be expensive. But doing it right is usually not cheap.

MicroSquirt: $400
LC-1 WB-O2: $200
MAP: $64
TPS: $75
TPS Connector: $35 (this connector had to come from europe) (IMG:style_emoticons/default/sad.gif)
Custom Injectors: $85 each, $340 for four
Wiring Harness: price is not set but more than $400
Injector Connectors: $12 each, $48 for four

I think when everything is done, it'll be around $2000 for the bolt in setup. I'm keeping drawings of my custom parts so that they can be laser/waterjet cut in the future. Everything will mount in the engine bay, so this will be a no cutting/modifying installation (except O2 sensor bung). Also, if everything goes according to plan, the stock fuel pump/fuel regulator will be used, which will save a significant amount of money and maintain a stock look.
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toon1
post Jul 20 2008, 06:26 PM
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Looks good Mark .
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McMark
post Jul 20 2008, 07:07 PM
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Cold start block off...

MS does cold start enrichment in software and widens the pulse width, so the archaic 'fifth' injector isn't necessary.

I will be using the archaic AAR though. (IMG:style_emoticons/default/laugh.gif) So the feed bracket goes on.


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rick 918-S
post Jul 20 2008, 07:29 PM
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Nice work Mark! (IMG:style_emoticons/default/popcorn[1].gif)
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Rick_Eberle
post Jul 20 2008, 07:37 PM
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Looks great! Where are you planning to mount it? Stock location? Is the MAP separate in the MicroSquirt?
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SirAndy
post Jul 20 2008, 08:04 PM
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schweet! (IMG:style_emoticons/default/smilie_pokal.gif)


how about using these for some extra low end torque? (IMG:style_emoticons/default/idea.gif)

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JeffBowlsby
post Jul 20 2008, 08:11 PM
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Yay Mark! (IMG:style_emoticons/default/drooley.gif) Yay Jeff K (IMG:style_emoticons/default/pray.gif)
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Joe Owensby
post Jul 20 2008, 08:14 PM
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Great work. I am thinking of going to one of the aftermarket FI systems for my car, hopefully sometime next year. Looking for a good reliable system that can feed the motor correctly to get maximum drivability, fuel economy on the road, and then preformance. Your approach sounds very interesting. Thanks for sharing. JoeO
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McMark
post Jul 20 2008, 09:17 PM
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QUOTE
Looks great! Where are you planning to mount it? Stock location? Is the MAP separate in the MicroSquirt?

Brain will be in the stock location. MAP sensor is separate on these and I will fab a bracket to mount the MAP sensor in the stock location as well.

QUOTE
how about using these for some extra low end torque?

Not on this motor. This is a stock look setup. (IMG:style_emoticons/default/cool.gif)
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Joe Bob
post Jul 20 2008, 10:25 PM
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Go for it....good luck.

I got the bad news today....my Type I MEGAsquirt motor needs to be torn down.....stooopid freaking head studs are pulling out of the NEW case......arrrgh.... (IMG:style_emoticons/default/headbang.gif)
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mightyohm
post Jul 20 2008, 11:21 PM
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Nice writeup Mark! I am glad to be involved in such a cool project. (IMG:style_emoticons/default/smile.gif)
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Elliot Cannon
post Jul 21 2008, 01:20 AM
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Modern fuel injection is the way to go. My trip to WRC was just over 2000 miles and I averaged 25 miles per gallon with my 3.2. My other car with a 2.2 liter type IV engine with Weber 44idf carbs gets about 18 MPG!!?? Go figure. I'd love to get rid of the Webers and replace them with fuel injection. Keep us informed how this works out for you Mark.
Cheers, Elliot
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james2
post Jul 21 2008, 06:03 AM
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your webers need work, my 56 oval gets 26 mpg with dual DRLAs (IMG:style_emoticons/default/biggrin.gif) ...and runs 12's.


QUOTE(Elliot Cannon @ Jul 20 2008, 11:20 PM) *

Modern fuel injection is the way to go. My trip to WRC was just over 2000 miles and I averaged 25 miles per gallon with my 3.2. My other car with a 2.2 liter type IV engine with Weber 44idf carbs gets about 18 MPG!!?? Go figure. I'd love to get rid of the Webers and replace them with fuel injection. Keep us informed how this works out for you Mark.
Cheers, Elliot
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watsonrx13
post Jul 21 2008, 06:31 AM
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Very nice Mark. I just finished reading Excellence mag this weekend and they have an article about upgrading a '74 911 to a modern EFI system, also a bolt in modification, except adding a bung to the exhaust. The total cost of the system was $1695.

-- Rob
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