I have been boosted on my 02 Eco for about a solid 4 months. The hiccups I get are related to the fuel pump acting up after being hot, it gets loud as sin, then the engine sputters as was described. But...it all goes away once the car is moving. It only happens at very low speeds or at a stop. For me I believe it's either electrical or in the FMU.
"If you aren't shifting, then you certainly aren't driving!"
SweetnessGT wrote:The mighty Ecotec.... the indestructable engine that people were getting into the 12's and boosting 12-17 psi stock....
*shakes head* I knew it would take a few years to find some serious flaws.
I only hope you guys can find these problems and spread the word...
I don't think It's power related - I think it's boost-related... pressure and heat. As was said, concentrating in certain spots.
4 Ecotecs in a month's span... that really IS frightening. How many boosted Ecotecs are left at this point past Phil and Rodimus?
Blue - I was just admiring the polish job on your engine bay the other day, too. 
Does the engine make ANY noises at all?
-Chris-
I've been waiting for you to chime in.
Filip (The Polish Kid) wrote:Sorry to hear that, Blue Splash. I remember when you started with your project from the beginning, I was excited to hear about each update. Hope you get everything figured out.
By the way, my boosted Eco is still up and running but no one really knows me.
I remember you, Philip. Your posts were always insightful and thought out.
Hopefully, my ringlands won't kill themselves with my little piece of boost coming soon. <crosses fingers>
I've killed two stock pistons to date. The first was running 14 psi non intercooled with 310's and a fmu. I knew it was going to happen but parts weren't all here yet and I wanted to drive ... took a few weeks of pinging to finally kill the #1 piston.
The second was on the way back fom the dyno
. new set up with intercooler, 8psi and megasquirt. Ran it to 6500 everything was fine, but you could see the injectors were maxed out. On the way back I got excited and reved it to 6900 ... pop goes the piston. #3 this time I think i was.
The Ecotec can take some serious abuse but the rods and pistons are weak points. Every broken piston I have seen is always broken on the inside of he dish where it is thinest. A tiny bit of detonation is all it takes. One reason I moved away from the fmu is tunability. You just can't tune it for both power and saftey. I will be ordering my forged pistons soon and already have the rods. I am learning the limits of my set up on stock pistons (I have head studs so its only the sot of a head gasket to swap a piston ) so that when I drop in the good parts i don't have an undetected weakness that goes unnoticed becasue I have the hardware to save my ass for a little while.
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so here it is, people need to calm the @!#$ down. motors blow. when you push as much hp as some of the ones that have blown, its going to happen. hypsy was making a @!#$ load of power on a stock motor. john h I coulndt find the thread but you didnt have a wide band right, and you were using 370 cc injectors and making how much power ???? (please dont take offense) as for airtonics I know nothing about his setup so whatever. I do however rember him saying that he wasnt suprised.
i have a wideband. its not hooked up yet. 370cc injectors at alot of fuel pressure and pulled timing from the reflash.... on about 18psi.. so pretty close to around 300whp.
you guys seem shocked wtih we all blew ecos..... making double the hp they came with.. cant expect stock parts to last for every.... if that was the case... wouldnt need forged internals.
i wasnt suprised it blew.. stock makes around 125-130whp and i was making close to if not 300..... over double... yeah i knew it didnt have much life left.. didnt really bother me as my new engine is going in soon and the portfueler will be here in a few weeks.
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P.S. I know its taboo around here but I find it a bit odd that 3 of the 4 motors on this list that have/having trouble are using the hahn kit..........I wont persue that further I value my twinkie.........(penis)...........it might get cut off.....you get the idea.
not gonna go into details but. hahn recomends 8psi. for reliable issues.. it would be fine.. both hypsy and i want alot more.. and we took the risks and rolled the dice. as did airtonics with he put the 14psi? pulley on
the fact we are using hahn kits doest matter. hypsy was running 15psi for months.. i was running 12psi since a month or 2 after i bought the kit.. its only the past few weeks since i bumped the boost up that i think caused it to blow.. plus i had a few 20psi+ spikes.
I agree... you can't blame the eco for blowing up in some of them's faces. no wideband, inadequate injectors, @!#$ty tuning, whatever the reason, I'm sure most of them were pushing the limits with the parts they had. Had they had proper parts to run 14 psi and up, they would not have blown IMO.
15.574 @ 89 mph stock without charger. new times with charger coming soon.
Yea my stuff is fine... My brother got misinformed by a friend of mine about the supercharger blowing... I told a friend about the oil leak and he got confused.
Anyway im still going.... But people cannot say that its because of the turbo... Boost is boost, if 8psi out of a turbo will blow a motor, 8psi out of a supercharger will do it too. I would say a roots type will do it faster though because of the heat, and on top of that superchargers generally flow more CFM than a turbo as well.
Im still getting the hahn kit... Im not gunna push it to 15psi, but 12psi is definetlyt what i plan on running daily.
<img src="http://memimage.cardomain.net/member_images/3/web/831000-831999/831395_11_full.jpg">
I have to add.... Another note to the supercharger thing... Just give these guys running 15psi with the GM supercharger, i bet they dont last any longer than the guys with turbochargers running 15psi, only diff is the turbo guys have been running high boost for about 2 years longer. The gm charger only just came out, its only a matter of time.
Not saying that a s/c is any better than a turbo, or vise versa. But to say that you want to go with a supercharger because the turbo will blow your motor is nonsense. 8psi is 8psi, 15psi is 15psi, despite Flow differences (normally higher on the s/c), its still boost... and it WILL wear out your engine, ecotec or 2.4, or OHC.
<img src="http://memimage.cardomain.net/member_images/3/web/831000-831999/831395_11_full.jpg">
BTW, glad to hear your car corrected itself... Ive had things like that happen before, not exact.. But problems that fix themselves. Just checked out your cardomain... I love it!
<img src="http://memimage.cardomain.net/member_images/3/web/831000-831999/831395_11_full.jpg">
I think the main factor for blown eco's is that for whatever reason, they feel they don't need to tune the ignition. I've read it so many times about people being happy about people tuning their fuel so rich "that it only knocks enough for the knock sensor to pull 2 degrees of timing now", like they've accomplished something good.....
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
Well I still think I'm the only one to snap a rod. I wish it would have been a ringland instead as I could have rebuilt it stronger opposed to buying another complete engine.
Regardless I was running 15psi intercooled, tuned on a wideband and retarding the timing progressively with boost.
Based upon my traps I was probably pushing close to 260 to the wheels. Take that into account is about 300 crank hp and then add the parasitic loss from the s/c (takes power to make power) I was probably near 330 hp to the crank.
Well over what gm recommends with their 2.0 forged motor let alone the 2.2 I'm happy it lasted as long as it did but still disappointed it destroyed everything in the process.
People blow up completly stock engines all the time, let alone those pushing over double the original hp of these things. Rods, pistons, good tune..... I'll drop the pulley size some more and push 18psi or more with this S/C and see where it takes me in the spring. For now it's just back to the 3.0 pulley and 13 psi
Glad to hear all appears to be well for the engine, but try and figure out what the cause of this was so it doesn't happen again.
12.770 @ 111.99 Intercooled Eaton M62
I almost thought i joined this club today.....but not today
1989 Turbo Trans Am #82, 2007 Cobalt SS G85
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I agree... you can't blame the eco for blowing up in some of them's faces. no wideband, inadequate injectors, @!#$ty tuning, whatever the reason, I'm sure most of them were pushing the limits with the parts they had. Had they had proper parts to run 14 psi and up, they would not have blown IMO.
inadequate injectors? have you red any of my responses??
it had the gm reflash as a tune.. not the greatest. and it was making close to 300whp.. tuned or not.. stock ecos wont last forever on kinda abuse.. no engine will why do u seem so shocked that it blew?? i dont understand why u keep saying i wasnt using the right injectors.. iv addressed your posts mulitple times now.
airtonics was completely tuned with proper parts.
Interesting.
72,000 miles on cav, 25,000 miles on boost on 8psi with stock engine and I beat on it everyday. I did take a few extra precautions like Jet hot and wrapping numerous parts, though. So far, so good.
I just want to say rhis, pick up the pieces and rebuild. Good Luck.
I should be on the list of blown ecotecs, prolly wait till next year though
glad to hear everything is ok.
lmfao @ some of these people!
N2O + Bolt-ons
= 220Hp/
250Tq
Coming Soon:HpTunersPro, EagleConnectingRods, WiescoPistons, 13sec2200
John H [Cavalierkid wrote:]Quote:
I agree... you can't blame the eco for blowing up in SOME of them's faces. no wideband, inadequate injectors, @!#$ty tuning, whatever the reason, I'm sure most of them were pushing the limits with the parts they had. Had they had proper parts to run 14 psi and up, they would not have blown IMO.
inadequate injectors? have you red any of my responses??
it had the gm reflash as a tune.. not the greatest. and it was making close to 300whp.. tuned or not.. stock ecos wont last forever on kinda abuse.. no engine will why do u seem so shocked that it blew?? i dont understand why u keep saying i wasnt using the right injectors.. iv addressed your posts mulitple times now.
airtonics was completely tuned with proper parts.
so you are saying 370 cc injectors are enough for 14 psi and 300 whp ? Somehow I doubt that but correct me if I'm wrong. That's all I'm saying about your setup, no need to get so defensive...
15.574 @ 89 mph stock without charger. new times with charger coming soon.
btw where did you address my posts I must not have gotten them by email notification
15.574 @ 89 mph stock without charger. new times with charger coming soon.
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370cc injectors at alot of fuel pressure and pulled timing from the reflash.... on about 18psi.. so pretty close to around 300whp
once in this topic
then in my topic that i made when i blew mine
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iv got the hahn stage 2. so iv got a secondary fuel pump. fuel pressure was at about 80psi or so on the 370s.
your response in that post
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18 psi on 370 cc's seems like a no-no to me, but what do I know...
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iv got the hahn stage 2. so iv got a secondary fuel pump. fuel pressure was at about 80psi or so on the 370s.
thats enough fuel for 18psi.
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yeah Im dissapointed that you didnt have a WB. thats a ballzy move. Id imagine that if we knew your afr nums this wouldnt be a guessing game.
again, i have one, its going in with the new engine... i turned the boost up and had fun. didnt really bother me that it blew.
and for the last time. IT WAS NOT LEAN. it was too rich if anything. the plugs were flithy rich. an d i had more black fuel stains on the rear bumper above the muffler in the past few weeks of the reflash, then i did with almost a year on the hahn kit wiht the 320ccs and stock computer.
its not a guessing game. i blew a ringland like almost every other blown eco. the only one thats blown so far due to a lean factor was brandosons nitrous solinoid stuck open. which isnt his falt.
my response again...
370 cc injectors at around 80psi flows alot more fuel.. its a 370cc injector at like 43psi.. at 80psi its like a 440. give or take.. i dont know the exact conversion
fuel was not the cause that it blew. again the plugs were extremely rich. dont you think that just possibly after so long of abuse and then making more the double the whp it came with.. it finally gave up? that and the fact hypsy and i both have the same problem. (smashed plug(s))
Sorry if i missed it, I just skimmed through all of the posts. But these motors that blew were all stock bottom ends correct?
John H [Cavalierkid wrote:]
my response again...
370 cc injectors at around 80psi flows alot more fuel.. its a 370cc injector at like 43psi.. at 80psi its like a 440. give or take.. i dont know the exact conversion
fuel was not the cause that it blew. again the plugs were extremely rich. dont you think that just possibly after so long of abuse and then making more the double the whp it came with.. it finally gave up? that and the fact hypsy and i both have the same problem. (smashed plug(s))
being that I'm not so mechanically inclined, I'm sure you'll forgive me for not realizing that your injectors at 80 psi means you're flowing more than 370 cc...
I'm just throwing ideas around here... trying my best to find something that might have caused problems... it's easy to just say "it's blown up because of too much power" but what about trying to find the exact cause of failure ? I understand if you already checked everything to the best of your knowledge and ruled out all the other possibilities...
15.574 @ 89 mph stock without charger. new times with charger coming soon.
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being that I'm not so mechanically inclined, I'm sure you'll forgive me for not realizing that your injectors at 80 psi means you're flowing more than 370 cc...
its cool man. i just wanted you to realize that it wasnt due to a lean condition.
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I'm just throwing ideas around here... trying my best to find something that might have caused problems... it's easy to just say "it's blown up because of too much power" but what about trying to find the exact cause of failure ? I understand if you already checked everything to the best of your knowledge and ruled out all the other possibilities...
i should have an answer by this weekend. the blown engine is out. gonna have the new one in for sunday hopefully. (time due to work). waiting on the portfueler from hahn. and i gotta get my flywheel resurfaced for the spec IV clutch.
im almost willing to bet its a ringland.. that seems to be what happened with everyone else besides airtonics. i know gm did changes in the engine and the ecu from 02-04. its strange that airtonics is the only one that actually threw a rod and he was on the gm charger.
maybe prolonged time at high boost levels. 12psi+ on the stock engine, the rings/ringlands couldnt handle it.
ill let everyone know when i pull the head off mine.. im more concered about getting it running again at the moment then finding out what blew. either way. something let the piston come up into the plug.
http://www.myspace.com/15102113
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P.S. I know its taboo around here but I find it a bit odd that 3 of the 4 motors on this list that have/having trouble are using the hahn kit..........I wont persue that further I value my twinkie.........(penis)...........it might get cut off.....you get the idea.
The fact that 3 of us have blown up means one thing, and one thing only....that we feel confident in our parts to push them to the limit. For us we found out that the limit was the motor and not our kits which is a good thing. This is in NO WAY an indication of faulty kits. Not even close.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
