Need Info for this Head

[JayB12]

Picked up a head from a 95 or 96 gsx It looks like they had some work done to the head and then the car didn't start, (had new cps/cas headgasket and other electronics.) So they junked it. I have a few questions. I don't think these are stock valves because they don't say 6t, does anyone know what brand they are? Also it has this stamp thing on it, does anyone recognize it?

 

[95'RS-T]

Not sure about them intake valves, but that's a reman tag if I'm not mistaken. Edit: Does this head have the small or big intake ports? I pulled a head from a Hyundai at the salvage yard once that had a tag just like that.

 

[JayB12]

Head has small 2g ports. It also is 5.200" thick so I don't believe it was resurfaced ever. I also snagged a Hyundai head but it has bent valves.

 

[95'RS-T]

Can you get a pic of the thermostat housing mount?

 

[JayB12]

Hyundai left - 2g Right, What were you looking for?

 

[Cornfed4G64]

I have nothing to ad but I have a 97-99 with big intake ports. Are those rare?

 

[JayB12]

I personally have never heard of that. What Intake manifold do you run? Are you sure it's not a 1g head with a 97-99 CAS?

 

[95'RS-T]

Ah I just wanted to see of it was a hyundai head. The Hyundai heads had both large and small ports. Small port Hyundai heads has the 95-96 style cam sensor. I can't remember if the larger port heads did too. I never heard of a large port 2g head either.

 

[007jimmy]

My head has the same exact stamp. I bought the head and block rebuilt from Overbore. Pretty sure most companies or shops add them.

 

[95'RS-T]

My head has the same exact stamp. I bought the head and block rebuilt from Overbore. Pretty sure most companies or shops add them.

Yeah I'm leaning towards rebuilt too.

 

[JayB12]

Maybe I should go get the block out of that 95 too then. The cyl walls looked mint, it may have been rebuilt too.

 

[Cornfed4G64]

I haven't either. ll look at the #s on the head or take pics and post back

 

[BogusSVO]

The intake valve are not stock, that you are correct about.
Now if they are good for turbo use, I can not say untill you pull a valve and check for a part number on the stem.

Now you can see if a magnet sticks to the head of the valve
If it sticks.... NOT a stainless steel valve, could be a cheap replaement valve

If the magnet does not stick, then it should be stainless steel, but still needs looked into.

I doubt theu are stainless tho, the sharp edge in the valve leads me to this.
Most all decent made stanless valves will have a smooth dish built into them.


Now that little part that is stuck on the head is called a heat tab, the center will melt out at appox 260* letting the company know the head was over heated, and voids any warrenty you may have.

They are commly applied by Machine Shops, Junk yard, engine rebuilder. head rebuilders.

 

[JayB12]

Cool! I tried the magnet trick and they stuck to the intake valves, so they are not SS valves, but they would only stick to the edges of the exhaust valves.

I assumed none of these were stock valves.

I'm still looking for a valve spring compressor to remove them though, sadly.


One other thing, if these are not good valves would I need new seats if i bought a set of engnbldr ss valves?

 

[BogusSVO]

If you get a full set of valves, I would recommend that you have the seats cut.

Also at this point I would have the guides checked and replaced as needed....

http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

http://www.dsmtuners.com/forums/cylinder-head-short-block/420045-how-have-4g63-head-rebuilt.html


If you are going to keep boot level at 20ish, Iron replacement guides will give you a decent life.

If over 25 I would suggest going to a bronze guide, due to the extra heat that the valve will absorb and pass to the guide.

http://www.dsmtuners.com/forums/cylinder-head-short-block/438429-4g63-head-build-modified.html

 

[JayB12]

So I finally got around to checking onto these valves. After removal I recognized the symbol and after a quick Google search it seems they are "sealed power" valves. Does anyone know if they are any good?

 

[BogusSVO]

Sealed power is a large corp, they bought out TRW about 15 years ago, I think they own Ancco wiper blades, BWD componats .... But the mother company is Federal Mogal IIRC.

The valves are pricy, and I do not know if they are a 2 poece design. So run them at your own risk.