Dave_Dc2

i built a 2 liter gsr turbo. motor was sleeved, when we put it together the first time it overheated and blew the headgasket, we took it apart, and it turns out one of the sleeves dropped about 4 thoiusandths, so we resurfaced the head and block, making sure everything was perfectly flat, put it together and it ran fine for about a week, now its doing it again...

Garage 808 Hatch

Once the sleeve starts to drop, whats going to stop it from continuing? you need to send it back and have it re-sleeved

nemisish20

This is caused by improper sleeving.

The machine shop either over bored the block or they just didnt do the sleeving right.

Take it back to them and tell them that you want it done correctly.

hybrdthry911

im guessing the sleeve work was done locally by a company that said they sleeve blocks all the time. only 3 companies in america i trust to sleeve block, definitely get it dont by a reputable company that sleeves honda blocks every day.

Dave_Dc2

this motor was previusly hydro-locked..i dont know if that could have something to do with it...but the motor ran perfectly all motor, as soon as i threw the turbo kit on, this problem kept occuring..

Turbo-LS

iTrader: (4)

The block is garbage start over bro, been there done that. Cost me 4 sets of pistons and a lawsuit to the ahole machine shop that raked me through the coals and now i won but havent seen a dime. lol

E85B18

Im sure you're running more power with the turbo over your all motor setup. More power is harder on the engine causing problems like this that werent there before

Dave_Dc2

so i was thinking maybe the block is cracked down at the bottom of the sleeve causing it to keep sinking? and this problem occured after boosting?

HiProfile

They don't chamfer the edges the sleeves sit on below, and don't chill the sleeves enough to get them down far enough. Think of putting a drywall screw (countersunk angled head) into a non-countersunk hole. It will stick up because the lip catches the screw. Similar principal here, the sleeve's lip down below is not contacting the block - in your case it was at least 4 thou's higher.

The boost could have doubled the cylinder pressure in there, pushing the head from the sleeve. Since the head wouldn't move, the sleeve did.