DIY_EFI Digest Tuesday, September 28 1999 Volume 04 : Number 550 In this issue: Re: DIY_EFI Digest V4 #539 Re: DIY_EFI Digest V4 #548 Re: DIY_EFI Digest V4 #548 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Mon, 27 Sep 1999 15:53:34 -0700 (MST) From: d houlton x0710 Subject: Re: DIY_EFI Digest V4 #539 Jeff Martin wrote: > > I was wondering if anyone could point me towards a place that had info on > Isuzu and its throttle body injection that they put on the 4ZE1. I have a The 4ZE1 never had throttle body injection. It's a multi-port sequential injection MAF system. > 4ZD1 that I would like to get rid of the carburetor and put the > aforementioned fuel injection system in my Trooper. Did the intake manifold You can, but you'll need the complete upper and lower intake manifold, throttle body, the computer and wiring harness and all the misc. sensors (coolant temp, TPS, MAF, O2, etc.) The 4ZC1, 4ZD1 and 4ZE1 are all the same basic block so things like intake and exhaust manifolds and accessories and brackets are interchangeable. You'll need to make sure and change everything though to go from carb to EFI and expect it to work right. > change at all when they changed the fuel system because I was thinking that Intake manifolds for the carb and EFI version are very different. > I could just bolt the throttle body up and put a high pressure fuel pump on > the line and figure out the wiring to make it work. If anyone could help me Best thing to do would be swap the tank as well and get the high pressure pump and internal baffling the EFI version uses. > I would thankful. Also I have in mind a CJ-7 with a rebuilt engine but a > tired carburetor that doesn't work the best. I was wondering if the intake > manifolds of the 4.0 liter high output engines of the Cherokees can bolt up > to the block of the 4.2 liter. I know I am asking a lot here but could you > show me where I could find out this stuff. The wiring harness in the CJ is > worn out and I figured a total swap of the wiring harness would also happen. I'm fairly certain it does. The Mopar EFI kit for the 4.2 I've read is not much more than the components used on the 4.0l engines packaged up for the 4.2. - --Dan houlster@xxx.com http://www.inficad.com/~houlster/amigo.htm ------------------------------ Date: Mon, 27 Sep 1999 20:38:18 +0100 From: Ade + Lamb Chop Subject: Re: DIY_EFI Digest V4 #548 At 05:00 27/09/99 -0400, DIY_EFI Digest wrote: >> Not sure about Efi Systems but on a normal dizzys you just have >centrifugal >> (rev related) advance and vac advance (throttle positon/rev related). I >> know that you don't need vac advance, all it does is improve part throttle >> fuel ecconomy. On the Rover Mini Mpi system water temperature is also >taken >> into consideration... It also uses the MAP sensor (equiv of centrifugal) > >Pardon? >The MAP sensor reads eqivalent to the Vacuum advance - measuring engine >load. Oops what you said is what I mean't Ade ------------------------------ Date: Mon, 27 Sep 1999 20:38:18 +0100 From: Ade + Lamb Chop Subject: Re: DIY_EFI Digest V4 #548 At 05:00 27/09/99 -0400, DIY_EFI Digest wrote: >> Not sure about Efi Systems but on a normal dizzys you just have >centrifugal >> (rev related) advance and vac advance (throttle positon/rev related). I >> know that you don't need vac advance, all it does is improve part throttle >> fuel ecconomy. On the Rover Mini Mpi system water temperature is also >taken >> into consideration... It also uses the MAP sensor (equiv of centrifugal) > >Pardon? >The MAP sensor reads eqivalent to the Vacuum advance - measuring engine >load. Oops what you said is what I mean't Ade ------------------------------ End of DIY_EFI Digest V4 #550 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".