I just did the same thin to #1&4 my money would be on a busted ring land..I just pulled mine apart last night now im waiting on the new sleeves to start putting it together...I have a sleeve pulled kit for the ecotecs..if anyone is close to modesto in California.

 

dont heat the block the sleeves come out really easy

 

Continue

 

No smoke at all for me. I'm looking forward to seeing what I did break.

 

Here's a video of it idling and a slight rev to about 2,300rpm. The car this thread started to be about with the cyl #4 issue. So there is no confusion.

http://www.youtube.com/watch?v=gCMyPAyx9pw

Thx

 

page not found.

 

Just changed it to youtube rather than photobucket. View above. Thx

 

yup thats a sleeve

 

No excessive smoke tho? Still?

 

it may not be completely blown out. afaik only a slight crack will still do that

 

Well arn't you the bearer of bad news. All good, Can I just replace a sleeve with a new one? If so where can I get one, I checked google and didn't see anything. Comparing my options compared to girdled because I'm broke right now.

 

lol i'm just trying to be real. when mine went. it sounded EXACTLY like that. but like you said in the original post, the only way to tell is take the head off

 

Nah, I appreciate the honesty. Can I replace a sleeve, and where can I find a sleeve?

 

im not sure if the cobalt sleeves are modular. either girdled block from zzp or find a used block will be cheapest.

 

you can get sleeves from c.e.d. arpund 115 or so and they are easy to replace

 

Can you grab me a link or something to this, I've been searching high and low. Cannot find to save my life. Also, what do I need to remove and replace? Pliers lol

 

any machine shop can do that do not heat the block c.e.d. 1877 441 5150 ask for tom

 

What causes a cracked sleeve?

 

pre-detonation.

 

not pre detonation (aka pre ignition) an engine wont survive that detonation will crack a sleeve or a piston ringland


read this lots of good info in this
https://www.cobaltss.net/forums/gene...nition-267519/

 

Yea, I've been told detonation due to my crack in the ceramic on my spark plug. All makes sense.

 

Good read on the differences on Detonation and pre-ignition

 

*OFFICIAL UPDATE*:

OK. So detonation occured. Immediatly taking it out on the piston ring, which scored the sleeve, and damaged the piston. I'm no genius on valves, so I'm unsure if damage has occured, but I'll have someone look at it. We were expecting a lot more damage than actually occured. But still this requires a new motor or girdled. Looking into it, thanks for the support. Pictures below.

PICS:












Again, Thanks.

 

whoopsie!