Alright so I'm searching for parts, gathering money, and am preparing to do an ecotec swap into my OHV powered 5speed 2002 cavalier asap. My engine is on its last leg and I've decided to bury it in my backyard and promptly pee on it instead of wasting more of my money to rebuild it so It can break 3 months from now again.
here's my question of the day:
I know I need the ecotec engine as well as the transmission due to the bolt pattern of the transmission. Thats easy
All I need is ecotec upper mount to bolt it into the car correct?
Since i had a 5 speed before, will my clutch lines bolt right up to the ecotec transmission?
Will my shift cables bolt up as well? ( I assume yes for this one)
I know I also need the ecotec's wiring harness and ECU (duh) but here's the REAL question of the day...
I know the BCM for the ecotec only works for ecotec cars correct? If this is the case, do I HAVE TO yank out my BCM and all the wiring and swap in the eco BCM and wiring for it to work? Or can I unplug my BCM and put in an ecotec BCM?
A little information would be extremely helpful... this might be a good idea for a sticky in this forum (ecotec swap into different types of Jbodies... 2.2OHV auto, 2.2OHV 5 spd, 2200 auto, 2200 5 speed, Z24 auto, Z24 5 speed, etc...
the OHV swaps would be the most popular tho for obvious reasons.
Any and all help is appreciated.
I have searched and read ecotec swap topics but i haven't seen a 5 speed Ohv swap to eco 5 speed yet... all autos. if it would be a little easier for me, that would be great. Also those threads tend to wander off topic making it hard to extract useful information from them.
I'd say grab everything and swap it that way you know it'll work rather then just hopeing and guessing.
Semper Fi SAINT. May you rest in peace.
from what i remember i think any getreg tranny will mount up to the ecotec. i looked into this a while ago when i was gonna do it.
^^if anyone can confirm that it would make my life a lot easier
altho i still need a BCM
[quote=ßãggéÐÇåv98 (Ûñqùðtäߣè Øñé)]from what i remember i think any getreg tranny will mount up to the ecotec. i looked into this a while ago when i was gonna do it.
This is soo wrong. Each motor (2.4, 2.2 OHV, and 2.2 Ecotec) take there own tranny. Bell housings are different.
For the BCM a guy on the org in your shoes did the same thing you are wanting to do. His car ran with the 2.2OHV BCM. I would not suggest it.Many reasons. One your miles is stored in the BCM. SO if you put the BCM from the car the motor came from you will show the miles that the motor has. Also I believe some other info is stored in there that helps the car run like a Ecotec.
For the shifter cables. Good question. I think you are right and they will work. I'm not 100% on this.
Also the clutch system should be the same as well. Best thing to do is go to GM, or a parts store have them look up the CLutch master cylinder for the 2.2 OHV and the Ecotec, see if they are the same part number. GM will be better.
We will be doing this swap soon on a very well known Cavy.
FU Tuning
i never looked at the bcm other than the top of it but you must have misread what i wrote
I want to use my existing BCM harness, but yank out the OHV one and put in the ecotec BCM. I was afraid my miles would change with the new engine, but I'm not too terribly concerned at this point. My car would never pass inspection anyway.
I asked if I could just get the ecotec BCM and unplug mine and then plug the new one in its place.
I dont want to have to strip the car down to bare sheet metal, and rewire everything with a new BCM and harness... if i could plug n play the newer bcm that would be the best <3
Trans.
you need shifter cables from a getrag and the shifter out of one also.
i know im almost done w/ mine. The only advantage of you having an 5 speed is the clutch petal unless you have a getrag in your car already. If you already have a getrag then everything should still work.....the cables and what not...but only if you have the getrag.....if you have the izuzu you have to swap almost everything
you also need the new clutch master cylinder and throwout bearing.
Mounting
You will need the upper mount/ the aluminum adapter that bolts to the head. the lower mount is the same but the bracket is differnt(you need the one off the ecotec)
you have to get new trans mounts/ ones off an ecotec, and you need to redrill the fron mount(to from about 2-3 inches forward of where it is) and have the rear mount welded in.
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ou have to get new trans mounts/ ones off an ecotec, and you need to redrill the fron mount(to from about 2-3 inches forward of where it is) and have the rear mount welded in.
I have a 2002 which means i have a getrag. I assume the mounting points on the chassis would be different... so all this hoopla would only be if i had the isuzu tranny correct?
ok you have an getrag...all the mounts are gonna be the same,,,shift cables will work and throwout bearing/ clutch master cylinder will work also.
only differnce is the bellhousing on the trans but you already got that covered.
I had a brilliant idea.
I realized the 2002 jbody is a very special car.
Its the only year that a jbody was available with all 3 engines. The 2.4, the OHV and the ecotec. So theoretically, the platform is set up to receive any of these three engines to make assembly easy in the factory so that means a lot of things should be compatible.
so my roommate has a 2004 cavalier so we decided to do some exploring...
it appears that the main plug in the firewall that allows the ECU to interface with the BCM is the same. This is great news and I'll explain why in a minute...
the BCM wiring harness plugs looks identical, however the BCM itself is more likely than not different. It relays information to the engine about certain items, and part numbers are different, however, the plugs look the same.
Whats that mean? To put the ecotec BCM in my car, I unplug the OHV BCM, then plug in the ecotec one. Done. No stripping the car. No rewiring everything. =)
next, the engine and tranny:
The mounts will all be the same. I need the ecotec upper mount for the engine side and thats the only problem. (aftermarket will do).
I have the getrag transmission, so the connection points in the body will be identical. All cables, fluid lines, etc will be the same since the getrags only difference is the shape of the bellhousing (which is integrated into the casing and otherwise unswappable or adaptable) the driveshafts may differ.. but i doubt that
The fuel lines are in the same spot, and the connections are identical to that of the ecotec.
Heater hoses, are in the same spot and altho they differ in length since they goto different places, easily replaced.
The exhaust manifold will bolt up to my catback system, so that takes care of the exhaust (maybe a header?)
and the best news of all.... Back to the main firewall plug...
The plug and chassis wiring should be the same no matter what engine was available in the car. This means I remove the OHV and unplug the ECU. I then install the ecotec engine and its ECU. I then plug that ECU into the firewall connector and everything should work correctly especially since the eco BCM is on the otherside saying whats up.
Overall, i think this will be the easiest motor swap ever performed. Granted, all of this is theoritcal, but it makes a lot of sense since all the ecotecs use the same sensors, I could put any ecotec into my car as long as the ECU and BCM are ecotec ones.
Again, this is theory but I'll be trying it for real in a few weeks. I have a very strong feeling its going to work beautifully.
TheFlyingSquirrel (PJ) wrote:i never looked at the bcm other than the top of it but you must have misread what i wrote
I want to use my existing BCM harness, but yank out the OHV one and put in the ecotec BCM. I was afraid my miles would change with the new engine, but I'm not too terribly concerned at this point. My car would never pass inspection anyway.
I asked if I could just get the ecotec BCM and unplug mine and then plug the new one in its place.
I dont want to have to strip the car down to bare sheet metal, and rewire everything with a new BCM and harness... if i could plug n play the newer bcm that would be the best
Sorry harness is the same. Only need the BCM.
FU Tuning
PJ has joined the Darkside...MUHAHAHAHAHA!
www.kronosperformance.com / 732-742-8837
to bad your so far away.......... I have an Ecotec, wire harness, PCM, BCM, Trans, Clutch, Flywheel.......... some one put a down payment on the Engine and harness....... but hasnt finished paying it off (over 6 months ago)....... The woman says screw him, and sell it to someone else. lol
Yea, its pretty much plug and play for your car. The only issue *MIGHT* be the EVAP setup, but I'm sure its going to be fine.
SPD RCR Z -
'02 Z24 420whp
SLO GOAT -
'04 GTO 305whp
W41 BOI -
'78 Buick Opel Isuzu W41 Swap
i may harass you for the BCM if I can't find it =)
BCM controls the body, cluster, radio, etc... stores mileage too. (in 2000 up.. 95-99 the cluster stores the mileage.. in case anyone else reads this!!)
You need to swap the PCM for sure... because it controls the motor. I don't think you'll need to swap the BCM... since it doesn't really control the motor, it takes care of everything else.
You're right... you do have the easiest swap possible... pretty much... but any 2000+ car should accept an Eco swap fairly easily. It's the pre-2000 cars that are a pain. Plus tranny swap, that sucks.
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It's the pre-2000 cars that are a pain. Plus tranny swap, that sucks.
Not so. That is easy!!!!! We have mastered that.
FU Tuning
^^ the mighty lenko thank you for your post You've done so much to Js I trust your opinion and take it with very high regard
YOU MUST HUMP MY CAR AT THE NEXT BASH <3
anyway
I found a salvage yard with a few ecotecs, trannys and a car on the lot. It looks like all I'm buying is an engine with wiring harness and a tranny =)
eco power here I come <3
I can't freaking wait
btw another thing i noticed about ecotecs...
their radiators are mirror images of the OHV ones. So i need an ecotec car radiator so i don't have hoses going everywhere under the hood
this is going to be so easy =)
Definitely let us know how it goes.
Cause when the 02's engine blows, i'd like to have some options other than another stock ln2
hey lenko
PCM / ecu... the engine computer whatever you call it... are they the same between autos and manuals?
I'm getting an engine from an automatic 2004, and a 2004 5 speed tranny (not out of the same car obviously) is the computer particular to the automatics, or do all jbodies come with the same computer?
PCM is the same physical part... but the programming in it is different. Takes 5 minutes at a dealer with the Tech 2 and Techline terminal to download from (and upload to your car) the software to change it over. You can drive a 5 speed with an auto PCM to get it flashed... but you can't drive an auto with a 5 speed PCM (nothing to control the shifts)
...j
i think shift cables are differant. trans are diff how are cables not?
2004 Cavalier, 2.2 ecotec, 5spd getrag
do you ever notice that the ones who talk the loudest have the least to talk about?
the actuators are exactly the same
remember the cables can be adjusted to the length of the tranny, but the shifters are the same, and the mounts etc are all the same. I am totally confident it'll bolt right in
lenko, the pcm reflash, how much would it cost? and does it really matter to get a reflash? i'll be running a 5 speed tranny on it... if i dont get it flashed would it effect anything?
i'll ask the guy at the salvage yard if i can get the 5 speed one but if not its good to know the engine will run with an auto comp on it
The main part of the trans is the same... that's where the cables attach to the shifter assembly... so the cables are the same. The INNER stuff in the trans case is different (gearing) and the bellhousing (middle part) is different.
I think the cables are the same.
And the axles definitely ARE the same. I know that for a fact, I'm using "2200" 2002 axles on my 2000 2.4L.
My PCM flash cost me $95 canadian. But that was for the supercharger, so I needed it. You can run the auto pcm for a while, but you will have a 600 rpm idle (low to launch... get ready to stall it often!)... plus a @!#$load of codes set.. I think I had 13 of them.
I did the Eco swap, but my car is a 2000... But hey GL and i thought i saw you needed good newer engine mounts.. I really didn`t read much further... I am tired... But i have mounts with like 10000 miles on and i want to get rid of them.
really though the Eco swap is worth it, i was so happy when i did it...
Cone
2000 ecotec cavalier
