This is from a friends car, I wont mention what brand sleeve it is because this is not a bash thread. I am simply asking if anyone has ever seen this before.

The sleeves are brand new, engine has only ran for a few minutes, was pulled apart to see why it kept smoking........

 

that is odd.

 

thats some crazy stuff... i've never seen anything like that before... definitely reccomend sending the pics to the manufacture because it's definitely a defect in the sleeve material...

 

Ive never seen this before, but have been told that it can happen when I got my sleeves. pressure checking the sleeves when they were installed would have caught this no? anyway, for sure this looks to be a defect and you should contact the manufacture.

 

There was a article on theoldone when they put larrys civic together and they also had a pin sized hole found in the cylinder wall within minutes of starting the engine up. They were using a Dart block.
Heres the article, its about 3/4 down the page.
http://theoldone.com/articles/Larrys...rrys_Civic.htm

 

Its just a pourous hole, it doesnt go all the way through or affect anything

Never seen it, but it wouldnt make a difference

 

Leaking water to your piston doesn´t affect anything? So water in the oil that lubes the pistons should be fabulous right?

What about exhaust gases in your cooling system?? That can blow engines..

 

WTH are you talking about? There's coolant running down the wall of the sleeve. Obviously its a through and through. The same thing happened to the Dart block that Larry used to build his own first Monster 2 litre (as mentioned above).

I guess from time to time things slip through. You don't see it often, but obviously it happens!

 

I'm willing to put my life on it that these are Darton MID's. I've seen it happen with these sleeves before.. They get an air pocket during its casting.

 

"that sucks"

Hope they will take care of you.

 

slap some jb weld on that sucker....good as new

 

i hope you are kidding.

from this angle is looks like it might be GE HD sleeves......they will defiantly take care of it for you if you contact them.

 

this happens more often than u think. being ductile steel or cast iron, there r going to b air pockets in the cast. some mor than others depending on the quality of the casting. im sure whoever the sleeve are from, they will fix this situation without any probs. keep us posted on this one.

 

He could even push a tooth pick in the hole then snap it off...that'll work

 

Looks like a Darton huh??? SHitty. Never seen that.....

This. You can clearly see the holes, its not a GE sleeve.

I thought you were a moron on rHMT... Jesus ****. You shouldnt ever post again until you learn something. Anything.

 

I would be pretty pissed, especially since the engine has probably been in the hands of a few people more than likely through machining and assembly, suprised you didnt notice the hole before putting the head on.

Hopefully whoever made those sleeves takes care of you.

 

Im not going to say which shop, but a shop nearby is owned by a friend of mine andf Ive seen VIDEO PROOF of the same thing happening, but it wouldnt happen till the motor got HOT... couldnt figure it out till he pulled the motor apart and got it hot externally then pressurized it.... THEN the sleeve would leak". Same sym,ptoms.... would smoke like hell when hot for no appearant reason, but you couldnt see the hole when it was cold... Youd think the h2o jacket would pressurize before the coolant would get in the CC, but that was what it was. Same thing.


Same sleeve manufacturer

 

wow never seen that before that sucks. good luck hope they fix it for you

 

Yea that look likes a DARTON sleeve... Never had a complaint like that before... knock on wood... I'm sure DARTON will be glad to replace the sleeve...That doesn't help the fact that it needs to be replaced and re-machined...along with down time and gaskets. Hope its not one we did here! We pressure test them just to make sure...but leaks don't always show up until hot.

We have seen 'pitting' like that in several Subaru factory sleeves that we were able to see during the honing process but not the boring. Boring tears the material and hides the pitting. The pitting is from micro-welding during the operation of the engine.. ie poor tuning.

I have seen this type of porosity after we cut the factory sleeve out of some B-series blocks. Some are not even usable(well I'm not one to JB Weld or use a filler).

The Ductile Iron DARTON uses is centrifugal spun casted so its capable of happening but QC at DARTON should have caught it....like they should catch out of round sleeves as well but that doesn't happen all the time either.

Howard