ecotec swap (Page 5/98) fierodeletre NOV 26, 09:27 PM haha that's funny, I thought all the bad drivers were in Utah. You can find a lot of J bodies in wrecking yards here, just need to find the 04 2.2 manual kind sounds like. Anyways, a crate motor is ALWAYS going to cost more than one pulled from a wreck, that's because someone's already rebuilt it. wftb- Any luck and or progress integrating the cavalier's key switch into the fiero's? cheers Austin Fosgatecavy98 NOV 26, 10:58 PM Just so everyone knows, I have ordered my Megasquirt standalone engine computer from my sponsor and should be here this week or next, i plan on running the motor outside the car first and then sticking it in the car when the weather is warmer. If anyone else goes this route, the ecotec ignition will not work yet (not supported), I am going to run a 98 cavailer 2200 ignition its DIS and pretty simple, will mount where the powersteering pump went. I will also have a vid when the ecotec first starts up. ecotecs rule... wftb NOV 26, 11:15 PM i have done this :i added three 12 volt relays into the cavalier ignition switch circuit .these relays break the two 12 awg red wires that read 12 volts hot all the time to the switch ,the green wire that read around 10 volts hot ,and the yellow wire that reads about 6 volts hot.i combined the reds on one relay because they had the same voltage.the relay coils are fed by an ignition activated feed on the fiero fuse box under the dash.in order to prevent grenading of my new starter ,i added a diode in the line from the starter coil feed line to the three relays this prevents any backfeeds to the starter solinoid which is what caused it not to release from the flywheel.i put in the new starter and fired it up using the fiero ignition switch tonight.so no more reaching into the glove box for starting.addmittedly this is a low tech solution ,seeing as the cavalier switch is still in the circuit.but now i just turn it on and forget about it. wftb NOV 26, 11:30 PM the picture above shows where i added the diode.from the purple wire that runs from the fiero ignition switch to the starter sole noid.the diode connects to the positive side of the added relays to prevent the relay coils dropping out when you turn on the fiero ignition switch.when the switch is in the run position ,it prevents a backfeed to the solenoid. the megasquirt system looks interesting ,but i like the idea of using as much factory stuff as possible.they have already done all the work.gotta love the plug and play of modern factory wiring. Fosgatecavy98 NOV 27, 11:04 AM quote Originally posted by wftb: the picture above shows where i added the diode.from the purple wire that runs from the fiero ignition switch to the starter sole noid.the diode connects to the positive side of the added relays to prevent the relay coils dropping out when you turn on the fiero ignition switch.when the switch is in the run position ,it prevents a backfeed to the solenoid. the megasquirt system looks interesting ,but i like the idea of using as much factory stuff as possible.they have already done all the work.gotta love the plug and play of modern factory wiring. I agree with you with the factory wiring, my motor didnt come with all the wiring so i had to go with megasquirt. But in the end, us Elite Ecotec Users, ( ) are all here for the same cause hehe... "Ecotec, the replacement for displacement" looking good btw, if u get a chance post some pics of your motor mounts more closely, I am still deciding on those. Mike Bucala NOV 28, 07:07 PM Nice work. I am about to begin a similar project. I have an 88 4cyl 5spd. I also have a near zero miles 2.2 Ecotec from a wreck, and a 5 spd from a Cobalt SS. I'm putting them together with a Fidanza aluminum flywheel, and Cobalt/Saab clutch. I think a header made for a Cavalier/Cobalt will fit as well. I have the full wiring harness and all factory wiring diagrams. I also got the column, gauges, and fuel system. Since I am an engineer for GM, I can at least get whatever technical data I need to complete this project. I think the wiring diagram is available to anyone on line through GM's service website. ICouldaBeenAV8 NOV 29, 12:23 AM bump. StuGood NOV 29, 12:33 AM quote Originally posted by Mike Bucala:I think the wiring diagram is available to anyone on line through GM's service website. That sounds like it would be a great resource! If you find a link to the wiring diagrams, could you please post it here? Thanks. wftb NOV 29, 12:39 AM the cobalt / cavilier headers point fairly straight out from the engine so you end up losing a lot of your trunk .i am trying to find a solstice exhaust manifold at a decent price because they point down instead of out.but the only site i found one on doesnt show a pic and i think they will send a cavvy manifold.is the cobalt ss tranny an F35? Hudini NOV 29, 12:51 AM Mike Bucala, let me know if you need someone to hold the drop light. I have a crash pad by Detroit-Metro where I fly for USA 3000 Airlines. Would be nice to know another Fiero owner when I bring mine up next summer. Ok, someone tell me, what is the advantage to the ecotec over the other engine options?