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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#1
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En Garde! Group: Admin Posts: 13,465 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 |
aircooledtechguy |
Nov 7 2011, 10:08 AM
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#2
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The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
I just finished a similar conversion for my '67 Squareback. I transplanted a '73 914 2.0L and converted it to MS2 V3 w/ EDIS using the stock 2.0L runners and a 1.8L plenum (clocked about 3/4" on the fwd mounting only so the runners would line-up) and a slightly modified 2.0L TB. I get my CLT temp from the LH valve cover. I switched to a Walbro pump. The injectors are yellow-top Type-3 D-jet injectors which flow almost as much as the stock green-top 2.0L type. I have had no fuel starvation with these
(IMG:http://www.914world.com/bbs2/uploads_offsite/images.thesamba.com-9730-1320682118.1.jpg) I've been meaning to pull it all apart to get it all powder coated, but I just enjoy driving it too much. . . It drives like a scalded cat!! When I get the car painted I'm going to have the pin-stripper badge it "SB Type-P SS" ("Squareback, Type-Porsche Super Sleeper"). Mine has EDIS, but if you want the MSQ-file, shoot me your e-mail address and I'll send it to you. It'll get you in the ball-park for your motor and have a good starting point anyway. |
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