Weird find

[Fighting5thSVT]

So, I am about done with replacing my valve seals. I have just one more to go. I got a surprise while I was in there...

I started with my driver side. ALL 6 valves had the following valve seals:

[/IMG]

Here is what I found on each exhaust side:

[/IMG]

This is my first Typhoon and first time really working on one, so I think nothing of it. Not to mention that the intake seals I bought from Hood are labeled "intake/exhaust" (even though the actual exhaust seals he sold me are much different and marked as "exhaust" only). So I figure that this is how the heads came from the factory....

Fast forward a day and I move on to the passenger side. I get in there and find NO EXHAUST SEALS AT ALL!:screwy: Only the above type on the intake valves. I changed 2 of the 3 cylinders and have one left, but I can guess that exhaust valve has no seal either (unless you count the tiny O-ring I found broken in both).

So am I safe to assume that the stock heads came without exhaust valve seals?

I am guessing that a previous owner started to replace/install them and realized that this job sucks and quit with only half of the seals changed??? The ones I removed are some type of black rubber and do not appear to be Viton (blue) like the ones I bought from Hood.

Any ideas???

 

[evberger22]

Re: Weird find

I am doing the exact same thing right now. Started on #4 changed the intake first. Took apart the exhaust and found no seal. I bought the GM seal kit. It came with 3 different styles of seals. A brown colored metal one with a spring wrapped around the top of the seal, I assume the is the intake seal. The other 2 look similar one is black plastic with a bigger hole than the other one which is natural colred plastic, which i assume are the exhaust. sorry this is my first time doing this and just want to make sure I get it right before i go any further. I can take pics of them if needed.

 

[Fighting5thSVT]

Re: Weird find

The hard plastic ones with the black rubber middle are the exhaust. The intake ones should look the same as the ones you are removing. All of them should also get the tiny O-rings on the valve itself also. They will sit in the lowergroove of the valve. I will post some pics when I get to my home computer

 

[Quickstop [UK]]

Re: Weird find

If these bits are missing then does it tick annoyingly?

What would the valve tick sound like if so?

Sorry for the :hijack:.....

 

[Fighting5thSVT]

Re: Weird find

The pic in the above post shows what the intake seals look like (even though on my truck, someone put them on half of my exhaust valves, as seen above). However, the ones I got from Hood were the blue Viton ones, but the same style

This is what the new exhaust ones should look like

[/IMG]

I also used the supplied O-rings with each valve too

 

[Fighting5thSVT]

Re: Weird find

If these bits are missing then does it tick annoyingly?

What would the valve tick sound like if so?

Sorry for the :hijack:.....

Not sure on the ticking noise. My guess is that one of the rocker arms may be very very slightly (like 1/16th of a turn?) loose. Possibly a sticker lifter or some gunk around one of the valves? Maybe someone with more knowledge than me could answer that better for you...

 

[Quickstop [UK]]

Re: Weird find

Yeah, just wondering.... I'll go back to my thread where I belong :back in box :

 

[evberger22]

Re: Weird find

Here is what the exhaust seal looks like from the GM kit I got installed. The kit also came with black plastic seals that have bigger holes for the bigger trucks. It was a generic kit i guess. It just seems weird how the exhaust seal just sits there and doesn't push on like the intake seal does.I guess that is what is meant by an umbrella type seal. Oh well better than not having anything like before. I just wanted to make sure I have the right parts and am doing this correct before I go any further, please chime in if I have anything wrong.

 

[Fighting5thSVT]

Re: Weird find

My new intake ones looked different. Same exhaust seals though. I would guess they should still work the same:dunno:

 

[Syclone #1721]

Re: Weird find

Id be willing to bet the head on that side with the same seals on all valves was removed and rebuilt at one point. Its common for rebuilders to put positive seals on all valves...just my opinion.

 

[Fighting5thSVT]

Re: Weird find

I never thought of that. I guess anything is possible at this point. Thanks

 

[RenegadePete379]

Re: Weird find

in the 2nd picture 2nd from the right i have those installed and have alwways used these on my normal sbc builds on I/E to. the one 1st from the right i used on my TT lt1 build but blue viton ones which were for higher temps and i also use these on I/E valves as well. i did this in order to stay away from the 2 different type of seal issue.