Engine Seized

[talon_42o]

Ok so I had a local guy do a 6bolt swap. This guy is well known in my area for doing DSM's up and has a good reputation. I brought him a full 1g running car with a bad tranny(no second or third gear) the deal was to to take out the 6bolt and put it in my 2g. Straight up swap full 1g motor. So I had him replace the water pump and timing stuff belt etc. So this engine has been sitting for a while b4 it ran 6-8 months, he did a comp test and got 165 across the board. So time comes to start the engine and he said it started real quick ran for a min and shut off now it appears to be seized. What could have gone wrong ? I just don't see how a running engine seizes like that oil pump ?? or timing setup wrong ?? Any input would be helpful. He took the valve cover off and looks fine in there. I had him keep the Balance shaft and replaced the belt Let me know what you guys think this guy isn't shady and has a good reputation for building fast dsms. So I mean people make mistakes but this guy wouldn't cut corners. WTF

 

[Geier]

Possibly too much tension on the timing belt, which spun a balance shaft and locked it up.

It could have been a poor tune that went super lean.

It could be a valve broke and is wedged in the engine.

There are a ton off different scenarios, but it will be obvious once you get the engine apart.

 

[thifault89]

How could it have to much tension on the timing belt if it's an hydrolic tensioner ? Probably missing oil or something hit the valves... 165 psi compression is 15 psi more than stock for a 6 bolts. Open the block and look for some broken parts.

 

[talon_42o]

Car was untuned and has dsmlink 3.0 I added that with the swap it was first start and was setup for 650cc fic injectors as thats what I put in the car.

 

[BigRSnail95]

Did you crawl under it and try to turn it by hand? you should probably pull the head or drop the oil pan to see if anything is broke.

 

[talon_42o]

Turns out it was one of the exhaust cam bearings. Gonna ###### rebuild my 2g head and put it on instead. Should I put some arp head studs and which head gasket ?? Hmmm

 

[phunny]

Turns out it was one of the exhaust cam bearings. Gonna ###### rebuild my 2g head and put it on instead. Should I put some arp head studs and which head gasket ?? Hmmm

Yes ARP, and HG is up to you, I prefer cometic...

 

[BurrowZ]

If you aren't going to mirror finish the block and head I suggest an OEM composite head gasket. That's what I got. Although mine is still apart... heh

 

[talon_42o]

<img src="http://www.dsmtuners.com/gallery/files/6/8/7/1/3/img-20110705-00452.jpg" alt="Cam Bearing" />

Bye 1g head .

 

[2GbTalonGuy]

Should have just saved yourself the hassle and kept the 7 bolt.

 

[talon_42o]

Well instead I'm rebuilding the 2g head. The 6bolt block is fine only the head was damaged... so lucky

 

[kthackst]

You'll be happy with the 2g head. It should let you flow a little better. I love my 2g head.

 

[brian9397gsx]

Im also running a 2g head with evo3 intake on my 1g its a great combo