ecotec swap (Page 7/98)
fierodeletre DEC 03, 11:55 PM
Wow, so um.. why won't it run the ignition? Isn't the eco's ignition run via data from the crank sensor, vaccuum, tps, iat, etc? isn't that what an ecm does? Or rather, couldn't you at least get the pulse data from it and then send it to the injectors? Seems like a waste of money if it doesn't do everything... unless the distributor isn't that hard to do. Would having the distributor make it less efficient? Would you have to do rig up a vaccuum advance on it, too?
Fosgatecavy98 DEC 04, 11:48 AM

quote
Originally posted by fierodeletre:

Wow, so um.. why won't it run the ignition? Isn't the eco's ignition run via data from the crank sensor, vaccuum, tps, iat, etc? isn't that what an ecm does? Or rather, couldn't you at least get the pulse data from it and then send it to the injectors? Seems like a waste of money if it doesn't do everything... unless the distributor isn't that hard to do. Would having the distributor make it less efficient? Would you have to do rig up a vaccuum advance on it, too?



The distributor mention, is placed where the powersteering pump is on the ecotec, the PS pump is on the rear of the motor on one of cams, from what I know it is rather simple. Reason I am not doing it: price, 289 I beleive on ebay for the MSD one. When I can pick up a DIS system for cheap at a junkyard. Megasquirt can do alot but from what I know cannot support that one type of ignition (Coil on Plug)
wftb DEC 04, 01:34 PM
so far i havent found a header that will work the way i want it .as mentioned before ,the cavalier headers use up a lot of trunk space.the manifold from the 2.4 solstice motor should bolt right up and it points down instead of straight out.but i am going to wait until someone starts making a header for the solstice and get one of those.there isnt any market for a solstice header yet ,i have gone to a lot of sites and no solstice headers yet.this is what i am stuck with at the moment:
wftb DEC 04, 01:42 PM
there may also be interference issues with a solstice style exhaust header or manifold.the solstice doesnt have a drive axle to worry about . in the pictures that archie posted for me ,it didnt look to be an issue but until somebody tries it we wont know for sure.i believe the thread is titled " question for solstice owners "
Fosgatecavy98 DEC 04, 06:04 PM
Thats exactly the type of picture I wanted! thanks
fierodeletre DEC 04, 10:34 PM
That pic from Archie looks like it still juts out pretty straight, but then again, I don't have either in front of me, so it could jsut be a trick on my eyes.

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If you can't be good, be good at it.

wftb DEC 04, 11:12 PM
the can you see in the pics is the catylitic converter .it is bolted directly to the solstice exhaust manifold.notice how the outlet is pointed down to the floor and angled back towards the transmission.if that cat were bolted to my cavalier manifold ,it would stick out at about an 80* angle to the engine .instead of pointing at the floor ,it would mostly be pointing at the wall of that building.
i have stopped working on the exhaust for now because i realized i have to do my gas tank mods first or i will end up having to take the exhaust off anyway to make it easy to get at the tank.i am going to put the cavalier fuel pump and sender unit into the fiero gas tank .the fiero pump works ok but it is about 9 lbs light and if i put in the cavvy pump and sender i get a gas guage back again.i dropped the tank and knocked the fiero mount ring off the tank .i have to fix the holes this left and then the opening will have to be cut slightky bigger to fit the cavalier pump. then i am going to bolt the cavvy pump into the tank using a big o ring and bolts through the tank and onto the fuel pump locking ring .i thought i would have to custom make a new tank but it looks like this will work fine .pic of cavvy pump assembly:
wftb DEC 04, 11:14 PM
gas tank out and locking ring removed
wftb DEC 04, 11:21 PM
this is how i tapped in to the cavalier harness to run the fiero fuel pump .i fed into the fiero fuel pump harness by connecting the grey and black wires of the cav harness directly to the fiero pump feed.the cav bcm has its own relays to turn the pump on and off.
wftb DEC 04, 11:39 PM
that was the wrong tank picture .this one shows the lock ring removed and the cavalier locking device is in the background.