Third engine in 80,000 miles

Hi, im new here and i have a 91 stealth r/t NA. I got it last summer and i found out it didnt have the original engine in it. So i found the records and it had been replaced at 73,000 miles and the engine only had 35,000 on it. Well a few weeks ago it started making noise at any rpm over 2k so i brought it in and i was told the crankshaft was bad and i needed a new engine. I guess they couldnt just replace the crankshaft because the labor would be a lot so i ordered a new engine and they are putting it in so i should get it back today. It is from japan and has about 30k miles on it. It was estimated at $2500 installed and everything so i was just wondering if this has happened to anyone else here. If so, what was the cause?

Just a noise? That was it? Nothing wasnt working, and the car ran fine? I've got a bad feeling that you may have just been scammed.

Sorry, i should have specified. It started making noise at 2k rpm and after 3k it revved slow and it really lacked power. Its an auto so when i let off the gas it wouldnt glide very good it was like there was a lot of friction it the motor. I thought it was the tranny but it turns out it wasnt. I just found that the engine is in but the front drive boots for the axles were bad so they are replacing those so i wont get it untill monday.

Sounds like you spun a bearing in that one. You honestly have no clue how many miles that engine actually had. The previous engine may have been damaged do to timing belt failure or something else. So it may be two completely different issues with why its on its 3rd engine already.

I just got the car back like an hour ago. Stealthee was right, it turns out it was a spun bearing. But the new engine runs good. I had been driving around for about an hour and i saw my friend on a road just out of town in his z24 w/intake & chip. I thought i might really get to try out my engine but he didnt want any fun (I wonder why:lol: .) I have to bring the car back in monday for the front axle boots though but then i will be done.

I just got the car back like an hour ago. Stealthee was right, it turns out it was a spun bearing. But the new engine runs good. I had been driving around for about an hour and i saw my friend on a road just out of town in his z24 w/intake & chip. I thought i might really get to try out my engine but he didnt want any fun (I wonder why:lol: .) I have to bring the car back in monday for the front axle boots though but then i will be done.

um not to be a dick or anything but he prolly didnt want to waste his gas with a sohc auto ...sorry to tell you man.

um not to be a dick or anything but he prolly didnt want to waste his gas with a sohc auto ...sorry to tell you man.

Check your post carefully before posting like that. He has the dohc. And the Z24 is a cavalier am I right(correct me if I am wrong) . He could beat a z24 cavalier with an auto dohc.

z24 Cavaliers are slow as balls till 02 when they got the Ecotec.

z24 Cavaliers are slow as balls till 02 when they got the Ecotec.

Exactly! :nono:

Me and my friend have talked about racing but we havent yet. He has CAI and a chip so with average or minimal gains he is putting out about 160hp at the crank. His car weighs somewhere around 2600 lbs i believe(correct me if im wrong.) I have intake so with minimal gains im getting about 230hp at the crank. My car also weighs 600 lbs more. He is 5speed i have auto but it will be a roll of somewhere between 30-35. I dont know when it will happen but it will sometime!

With your intake you now have about 211 crank hp. ;) The DOHC never really was 222hp.

With your intake you now have about 211 crank hp. ;) The DOHC never really was 222hp.

You say that just for the stealth dohc or gt also?

With your intake you now have about 211 crank hp. ;) The DOHC never really was 222hp.

Wow, i heard they were overrated but i didnt know it was that much. Thanks for the heads up. My new engine is from japan out of a 3000gt so it has the extra horse power. J/K lol.

You say that just for the stealth dohc or gt also?
The entire 3s DOHC line up. The SOHC was actually underrated though. Theres a guy with a ATX SOHC that dynoed 145whp. Thats around 185 crank hp not the 164 they were rated at.

I have another question. I've heard that when the battery gets disconnected for a while the ecu has to like re-adapt to its surroundings, is this true? Cause yesterday it was kinda idling low and sometimes it would pull hard when i gave it gas and sometimes it wouldnt pull that hard. After driving it a while it started idling like normal and it was more consistent every time i hit the gas. So i was just wondering if you guys think it has to do with the ecu.

I have had mine disconnected for about a week and the only thing that needed reseting was the deck in my car.

Me and my friend have talked about racing but we havent yet. He has CAI and a chip so with average or minimal gains he is putting out about 160hp at the crank. His car weighs somewhere around 2600 lbs i believe(correct me if im wrong.) I have intake so with minimal gains im getting about 230hp at the crank. My car also weighs 600 lbs more. He is 5speed i have auto but it will be a roll of somewhere between 30-35. I dont know when it will happen but it will sometime!

A 95 Z24 weighs 2838lbs. Here are the times of cavaliers from around that time: 1993 Chevrolet Cavalier Z24 8.3 17.3
1995 Chevrolet Cavalier LS 10.9 18.0

I have had mine disconnected for about a week and the only thing that needed reseting was the deck in my car.

When you connected your battery did the car idle weird or not pull hard for a day or so? And i guess i was off on the weight on the cavilier so i shouldnt have much of a problem from a roll. I beat my other friend's stock 92 z24 with the 3.1 v6 that puts out the same stock hp as the 96 but i think 185 torque, he was auto though.

No it worked fine. How long was yours disconnected? If something isn't working well with the engine you may want to go to the mechanic and tell him whats going on. If he did something wrong dropping in the new motor you would want to get that taken car of ASAP.

I dont know how long it was disconnected, no more than a day. I was just out driving it and it is idling at about 700rpm now, not 500-600 like it was yesterday. It is shifting consistently too and it is about the same temperature outside today as yesterday so im guessing the engine was just sitting for a while before I got it.

um not to be a dick or anything but he prolly didnt want to waste his gas with a sohc auto ...sorry to tell you man.


um ya sorry about that i had a few too many beers last night and i thought it said z71 not a z24 my bad

um ya sorry about that i had a few too many beers last night and i thought it said z71 not a z24 my bad

Dont worry about it, it was a mistake we all make them. Like trying to race a modded mustang gt that i thought was a v6, with my stealth, now that was a mistake!

How long the battery was disconnected doesnt make a difference. Resetting the ECu takes as long as getting the terminal off long enough to cause you to lose radio presets. Some cars act different than others once its reconnected. Your issue sounds exactly like the ECU relearning maps.

I was hoping it was that. Thanks Stealthee:) .