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Old 02-27-2013, 09:02 PM
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Free* Vortec heads.

Free, as in I traded a bunch of once-fired brass in a caliber that I don't reload for them. They're 906 castings from a 3/4 ton truck. I'm pretty sure that they have the hardened exhaust seat inserts, but I haven't torn them down yet. The engine threw a rod and bent one of the exhaust valves. Both of the rear-most exhaust bolts are both snapped off just level with the head. I know that's not an uncommon occurrence. (I worked at a Nissan dealership for about a year. The single most common repair that I did was warrantying the rear-most exhaust stud on the early 90's V6 pathfinders/trucks.)

I'm getting ready to do a 350 build for my truck and I was originally going to use a set of 487 heads. Either way, a set of heads needs to be redone. I haven't picked up a short block to rebuild yet. I missed a roller-cam ready TBI engine by about 5 minutes last week.

I figure that the price of having them cleaned and checked for cracks is worth the risk of a basically free set of heads. Even if they're cracked or otherwise damaged, I have a good base for very weird, yet very stable, lamp. And my wife will ask me "Why can I ever have nice stuff?"

Matt

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Old 02-27-2013, 09:11 PM
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I used to work for nissan back in the late 80s and early 90s.I installed A/C in the path finders before they left the port for the dealer ships.
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Old 03-02-2013, 09:43 AM
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I used to work for nissan back in the late 80s and early 90s.I installed A/C in the path finders before they left the port for the dealer ships
I probably in-processed some of those! (I don't remember the techincal term for it.) I worked at a dealer for most of 92.

And now I can't find my valve spring compressor. I knew right where it was last time I used it....

About 10 years ago.

Gotta find one today.

Matt
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Old 03-02-2013, 09:55 AM
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you dont need a compressor to take the heads apart
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Old 03-02-2013, 10:00 AM
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Gotta have something to compress the valve springs. I'm a strong guy, but not quite that strong.
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Old 03-02-2013, 10:27 AM
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Quote:
Originally Posted by morcey2 View Post
Gotta have something to compress the valve springs. I'm a strong guy, but not quite that strong.
Socket, hammer, done......
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Old 03-02-2013, 11:32 AM
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Originally Posted by bygddy View Post
Socket, hammer, done......
I like to be able to find the parts I'm removing and to be able to keep small automotive parts from embedding themselves in my person. I know that's a technique that some people use, but I'm just not comfortable with it.

Matt.
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Old 03-02-2013, 11:47 AM
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exactly what would say

Quote:
Originally Posted by bygddy View Post
Socket, hammer, done......
hammer socket&
shop rag and a hand,lol.
all engine builders do that
parts dont fly anywhere

Last edited by vinniekq2; 03-02-2013 at 11:48 AM. Reason: not enough info
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Old 03-02-2013, 01:23 PM
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Originally Posted by vinniekq2 View Post
hammer socket&
shop rag and a hand,lol.
all engine builders do that
parts dont fly anywhere
Lots of engine builders also hammer the damper on, but that's not the way I'd prefer to do it.

I was able to locate my compressor. It's in my uncle's shop about 100 miles away and will be here Monday. It's amazing what you can find out through facebook. I forgot I lent it to him a couple of years ago.

Matt
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Old 03-02-2013, 07:28 PM
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morcey2
ever put a balancer on a 283?
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Old 03-02-2013, 09:23 PM
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Originally Posted by vinniekq2 View Post
morcey2
ever put a balancer on a 283?
That's irrelevant. There's a difference between having to press or hammer the damper on because it doesn't have a drilled and tapped crank snout and hammering it on just because it seems to work most of the time. I've had to cut steel with an arc welder instead of a cutting torch, but that wasn't my choice. (long time ago and it's a long story)

If the socket, hammer, and shop rag works for you, great. It's not the way I want to do it is all I'm saying.

Matt
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Old 03-02-2013, 09:47 PM
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If you dont know about something,just consider it new knowledge.we all learn.to post something like you "need" a spring compressor to take heads apart is quite funny.Even with a spring compressor quite ofter a hammer is needed as the springs just compress with the spring compressor pushing on the retainer.
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Old 03-05-2013, 10:57 AM
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Quote:
Originally Posted by vinniekq2 View Post
If you dont know about something,just consider it new knowledge.we all learn.to post something like you "need" a spring compressor to take heads apart is quite funny.Even with a spring compressor quite ofter a hammer is needed as the springs just compress with the spring compressor pushing on the retainer.
Fair enough. I've used that to break keepers loose from the retainer, but I was always told to just do a very light tap specifically not to release the keepers from the valve stem.

I got them torn apart last night and they're fitted with the hardened exhaust seat inserts inserts. There's a pretty noticeable cast-in ridge just above the insert in the exhaust port. That must be the one that everyone says needs to be knocked down on the 906 heads.

Matt
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