are these valves normal? Blown HG

[Outdorsman]

Well I pulled the head off today and to my surprise, 1 inch was missing from the head gasket between cylinders 2 & 3. Pretty nasty stuff. Anyway, I took a look at the head and it seems that the valves are open slightly on cyl 2, maybe 3 as well I just took one look and am about to head to sleep. The rest were shut tight. Is this normal or am I looking at bent valves? I plan to do the water test tomorrow.

 

[flawlessTSI]

With the cams in, not all the valves will close all theway. Get us a picture and we can help you out.

 

[bastarddsm]

A HG blown that bad will warrant complete dissassembly of the head, and getting the deck cut.

 

[BogusSVO]

If the head is excessively warped. The distortion can cause the valves to crack off the seats.

 

[Outdorsman]

I'll check it today, I found a lot of things the previous owner cut corners on. The lower timing belt cover was stitched up because it was broken and was held on by 2 bolts. At least he had the balance shafts eliminated.

 

[Colt4G63 also]

I use Sunoco stickers and aluminum paint on my lower timing cover. It would sure be nice to have a nice expensive perfect one, but every two years or so my A/C belt cuts it nearly in half anyway.

 

[Outdorsman]

The previous owner removed the AC belt .

Well theres your problem!

You must be logged in to view this image or video.

 

[5150DSM]

Head gasket blown that bad, I'd be tearing down the whole motor. I wouldn't be surprised to find pieces of the fire ring down in the oil pan. Do it right once to avoid repeated failures and repeated expenditures.

 

[Outdorsman]

What causes this to blow so badly? I'm guessing its that china made turbo that came with the car? I'm just trying to get it up and running to sell . I'll pull the oil pan later to see if I can find the fire ring.

 

[goodhart]

Yea I'd say she probably overheated a bit!

I would get the head checked out for warp for sure.

 

[Outdorsman]

My car was all stock except for the ebay turbo. Thats the only variable I can think off that caused this. That or it just happened over time haha.

 

[ibreakmytsi]

Over boosted? Maybe detonation? Or serious overheating. Yikes.

 

[Outdorsman]

Well another clue to the puzzle has been added. Seems that it overheated before I owned it because you can still see the residue and what not from overheating. Seems the head waas never machined if they did change the HG. Well its definitely going to the machine shop now.


Does this really warrant tearing down the whole motor? I can't afford that .

 

[flawlessTSI]

I say youll be ok with millingthe head and new head hasket and head bolts/ studs. It looks like the head lifted from them reusing the old head bolts or not properly torquing them down.

At the most clean the oil pan. Tearing down the motor is not necessary, thays what oil filters are for.

 

[Outdorsman]

Alright getting it machined tomorrow. Will running the ebay 16g cause this issue again? I have no immediate t-25 or 14b to substitute it. I plan on replacing a few hoses that look like shit.

 

[TSI_93]

Just unhook the waste gate flapper on the piece of junk ebay 16g.

 

[Outdorsman]

I'm just gonna buy a 14b , would rather be safer than sorry. All I wanted was a reliable daily driver haha. Hopefully I get a fast turn around for the head. Pretty much only going to get it cleaned and resurfaced. Maybe have them check the valves too. I'm pretty much broke right now, just tryina get it running. Using the SUV is not good for gas.

 

[BogusSVO]

That was a cheap HG, by the looks of it from an Evergreen gasket set.

Have you checked with the machine shop on just how the head will be surfaced?

http://www.dsmtuners.com/forums/cyl...0613-why-not-let-your-head-belt-surfaced.html

http://www.dsmtuners.com/forums/new...face-4g63t-cylinder-head-mls-head-gasket.html

http://www.dsmtuners.com/forums/newbie-forum/420313-how-fluid-test-4g63-cylinder-head.html

http://www.dsmtuners.com/forums/newbie-forum/341028-4g63t-head-oil-port-mod.html

 

[Outdorsman]

I can't find a decent machine shop in my area . I called some up and they are closed now... as in shutdown