Engine go boom??????

[cmptrphreak]

Alright I just put on a turbo xs boost controller using the tech guide on this site I hooked it up how they said to do it. I had the boost at 20-... boost pinned my boost guage. I get on the highway to go to a store called top speed around me . the highway is only like 5 blocks from my house. Right when I get on the highway I try to speed up going onto the on- ramp the car stuttered and I just seen white smoke from the back and in my car. I pulled it the dip stick flew out and got oil all over the engine bay. I though no problem. But when I went to fire it up again it was missing like a mother ####er. I pulled the plugs check em all and there was tinsy bit of oil on the plug from the second cylinder closest to the MAF. I put it all together and checked everything out and everything looked alright. Turned the boost controller down to like 0 and still same shit. Im not sure what happened did the head gasket go out? the piston rings dunno. I did a compression test that cylinder had no compression one on its left had like 35 and the rest had 80. Maybe someobdy can be nice enough to point me into the right direction of what happened. Could the head have lifted up and blew the gasket? or I fried the piston rings The car has only 42k miles on everything not just motor. Dumped exhaust, K &N, hacked MAF, 2nd gen elbow, and Boost controller . its a 1990 eclipse gsx. turbo manual gearbox.

 

[spidy3]

I would check head gasket. Thats first thought that went thru my head. check for coolant in your oil. you can tell if you take dipstick out and the oil is gooey. Also are you going by the stock boost gauge or aftermarket one? stock gauge isnt very reliable. so if you think that said 20 it could have been more and supposidly the stock head gasket with arp head bolts can only hold about 20psi from turbo (from what i've read/heard)


Dom

 

[cmptrphreak]

I have a aftermarket boost gauge it went over 20 and pinned it. The car is stock pretty much.

 

[ICGerms]

-... boost pinned my boost guage....

Since it was "pinned" you could very well have been running 40psi. Your compression is very low. To figure out if your rings are bad, try a wet compression test. A blown headgasket IS a very real possibility. Also, double check to see if your timing marks are all lined up.

 

[cmptrphreak]

could the timing belt have jumped ? I did try a wet test on the cylinder with no compression same thing should I be sort of happy that the rings may be good? I looked down into the cylinder and seen something wet and lots of debris in there. Me and my bro are getting ready to pull the head since he's a mechanic and Im sorta learning were gonna do it any suggestion when taking it apart or putting it together?

 

[sonicnofadz]

If you ask me, it sounds like your motor just suffered some severe damage. To get 0 compression means that something is really fux0red badly. Either your rings have all somehow mysteriously died at once, OR your timing belt skipped some teeth and you crushed all your valves. CAREFULLY turn the motor over by hand with a socket wrench with a 1/2 inch drive. If you feel an obstruction while turning the motor over its probably your valves and you need to rebuild your engine. At any rate DON'T START YOUR MOTOR again until you have checked the timing and are certain all the gears are lined up properly.

 

[tstkl]

stock car + 20 psi = bad idea

maybe the piston pin broke...... also i thought he said he was getting compression in all the cylinders except the second from the maf, just not very much... id say take the head off and check stuff out... i dont see how it could only be the piston rings if your getting 0 compression... you could probably get 1 psi compression using your fist and a coffee can if you tried hard enof..

im assuming you have the stock turbo, so 40 psi is impossible, but 22-24ish is probably more realistic... do you have any fuel mods to support that kinda power? i thougth you would reach fuel cut at about 16-18 psi on the stock injectors and pump... maybe i missed something in your post...

all i can say is, whatever it is, chances are its expensive...

edit: just re-read your post,... i was thinking, could the head have cracked? cuz that would be where the oil was coming from, why there was white smoke, and why its now misfireing... along with why there is low compression... if you do need a new head, get an evo III head and maybe even port it...

 

[ICGerms]

...so 40 psi is impossible...

It was a rhetorical statement when I said that. The point is that there is no way to tell how much boost you were actually running, but my bet is that it was more than 20psi.

 

[gurrmanator]

If you blew the dipstick out then that means rings or a hole in the piston.your going to spend some cash(rebuild).

 

[tstkl]

It was a rhetorical statement when I said that. The point is that there is no way to tell how much boost you were actually running, but my bet is that it was more than 20psi.

i know, i just dont want him going around, yea i turned my boost up to like 40 psi on a t25 turbo, and it blew,.... your right, if its pinned its probably more than 20 psi, its never a good idea to pin something...

 

[IHeartTurbo]

Wow, why would you turn the boost up to 20psi when your stock?

 

[cmptrphreak]

Timing marks are good cant turn the motor by the cam gear did it at the crank and first it wouldnt want to go but it finally budged. Im already pullin the motor out with a buddy. Found this place maybe get the new motor from there http://www.naganojapanese.com/jdm_4g63t.htm and the old one were gonna have some fun with it. Were gonna have the block bored and stroked 2.3 Yippy I always wanted to do that. What u guys think of the website anybody know of a good motor for sale.

 

[tt281gt]

did I read it correctly, You turned the motor by the cams...or tried to? ...

 

[sonicnofadz]

Timing marks are good cant turn the motor by the cam gear did it at the crank and first it wouldnt want to go but it finally budged. Im already pullin the motor out with a buddy. Found this place maybe get the new motor from there http://www.naganojapanese.com/jdm_4g63t.htm and the old one were gonna have some fun with it. Were gonna have the block bored and stroked 2.3 Yippy I always wanted to do that. What u guys think of the website anybody know of a good motor for sale.

Ummmm...please never try to turn your motor over by the cams, only do it from the crank. Trying to turn it by the cams can cause you to skip timing or damage the belt.

 

[Turbo442]

Detonation damaged/cracked your ring lands and rings. You will need new pistons, rings and a head gasket.

 

[cmptrphreak]

Alright get the head off head is fine looked at the piston cylinder wall is messed up and I melted a piston how often does that happen? Is it possible for me to get the cylinder bore bored and sleeved ? because the wall is pretty messed up And get a new engine is the thing that my motor has sentimental value . hehe might sound stupid but yeah. I dunno any ideas?

I got found a machine shop that is going to machine the whole short block and the head.
Im ordering ross 8.5:1 pistons .20 over
everything else from the shortblack i will reuse everything else but its going to be machined.
The head is going be rebuilt as well with the new revised lifters. Thinking about putting in 1 mm oversize valves with dual springs and get it gasket matched. What do you guys think I m not made of money so any thoughts. its gonna cost 825 for labor.

i also Got soom pics of what happened.

 

[Mike1992]

Depends on how deep the damage is. If it can be bored .020 possibly .040 over and be smooth then you'll be ok if not start looking for a new block. Sleeving isnt an option.

 

[cmptrphreak]

How much is 0.20 over though Ive been going crazy trying to find out.

 

[Mike1992]

.020 = .5mm

 

[cmptrphreak]

I got pictures check em out

 

[Mike1992]

Those are some really shitty pictures. Dont go buying parts until you get that block to the machine shop. Theyre gonna be the ones who will determine if it can be machined out or not.

 

[Defiant]

Im ordering ross 8.5:1 pistons .20 over

Put a hold on those until the shop checks the block.

 

[cmptrphreak]

I know Im just speculating now I have to give the machine shop a 200 dollar deposit and then they will tell me what sizes everything will need to be or if the block is crap which means then that im gonna cry days and days too come.