Zach's Carbs to Microsquirt conversion thread, 7/20/18 update |
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Zach's Carbs to Microsquirt conversion thread, 7/20/18 update |
VaccaRabite |
Oct 11 2011, 06:44 PM
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#141
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En Garde! Group: Admin Posts: 13,553 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I am retrofitting this thread to be my full on conversion thread, documenting my change from dual 40 Webers to MSII fuel injection.
Here is what I have so far, and what I need: HAVE:
Built on 1.7 heads. Jake's 9530 cam (carb cam similar to Web 494) Mallory optical ignition ACCEL (UltraCoil) coil. SSI exchangers for exhaust. My goals for this project are to have near stock intake noise volume, better cold starting - especially in cooler weather, negate the bad effects or Ethanol on carbs, teach myself something about fuel injection. Since I already have a pretty good ignition system, I am not going to go after crank fired ignition at this time, but I am not ruling that out for the future. Before I begin the conversion, I am going to pull the engine and do a little refreshing and cleaning, including:
QUOTE I am getting ready to start my conversion form carbs to EFI. My goal is to use as much stock EQ as I can, but replace the sensors and such with modern, easy and cheaper to find stuff. Plus, since my car has a cam, the stock FI will not work. My engine has 1.7 4 bolt heads. 1) are the 1.7 and 1.8 intake runners the same? 2) Is the intake runner inside diameter smaller then the 2.0 intake runner ID? 3) is the throttle body for the 1.8 smaller then the throttle body for the 2.0? If the 1.8 TB is smaller then the 2.0, can the 2.0 TB be swapped in? Are 1.8 injectors high or low impedance? I am asking this as I will be able to get Joe's discarded 1.8 bits when he pulls his engine and starts going down the 2056 route. Zach |
McMark |
Oct 11 2011, 09:48 PM
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#142
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Yup, none of the intake runners are the same or interchangeable with other plenums, although I have cut and reoriented intake runners. Specifically getting a set of 1.8 runners to match a 2.0 plenum.
All 914 injectors are low impedance. L-Jet uses a resistor pack to 'emulate' high impedance injectors. If you want to use stock injectors with MegaSquirt, you can get one of those resistor packs to do the same. The 2.0 throttle body has a flat bottom, and the 1.7, 1.8 have taper/cone bottoms. You could look into the size of the bus 2.0 TB. |
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