1964 GMC 1000 Fleetside

[BarryGMC]

I hate my I pad it spell checks for me and is often wrong. It's Pcv valve. Try it you will see.

[aphaynes]

Originally Posted by BarryGMC

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While you are at it you should check the PVC valve. That's really why your engine is pressurizing. It needs vacuum to pull through the breather. While your at it put some new valve cover gaskets in. Glue them to the covers with black rtv. This lets you pull the covers with ease. Then check the valve lash hot. .012 intake, .018 exhaust. This is a big problem I have found with these old boys, to little lash. Finally find someone with a dwell meter and a vacuum guage and set the timing. I bet there is some old timer in northern Alabama with these tools and the know his to use them. Lastly when ever I think of the rural south I think of the movie deliverance. I bet you think of my neck of the woods and think randy weaver and the order. It's a draw. But we have better old rigs. Barry

Whew!

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Well you lost me after pull the valve covers, but I will figure it out.

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A new phase of learning on this journey.

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Carb kit arrived today so got that back together and set aside until it can be put back on the engine. Got the head set gasket kit as well, so I can get the ones I know are leaking ... and the valve covers to boot. Now .... off to go do some research on checking valve lash!

[Foley]

Originally Posted by BarryGMC

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I bet you think of my neck of the woods and think randy weaver and the order. It's a draw. But we have better old rigs. Barry

Randy Weaver and Ruby Ridge, Naples, ID. Randy Weaver was my hero! He fought the Feds and ultimately won. However, the price he paid was enormous.

[aphaynes]

Well just about got this thing clean today. I can see that shiny brass now.

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The only way I can check the progress on it is using my cell phone camera to look at it. Just can't get my eyeballs directly on it.

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Well, to have worked on this thing most of the day, I don't seem to have gotten to far.

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Seems to take me forever to get all the old gasket material off the manifolds. Must have been super glued on there.

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Also pulled the valley pan and got all the bubbly paint off of it and cleaned that gasket area with shopvac in on hand and rags stuffed in all openings to keep junk out of the engine.

Decided to pull the distributor in case oil was blowing through there as Culver had suggested. I had really expected there to be a gasket or o-ring where the distributor sits on the block that would need replacing, but there wasn't. Am I mistaken on this assumption or did someone prior mess up by not putting one there???

Also, what's the best way to prep the intake manifold for paint, since the current paint job is flaking off? Note: I do not have access to any type of media blaster.

BarryGMC - may be a dumb question, but hey, I never claimed to be smart!

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When I get to a point where I can check the valve lash, it seems as you stated, that has to be done with the engine hot. So do you pull the covers and let it run with them off, or let it get hot then attempt to pull the covers?

[BarryGMC]

One of the first thing I do if the truck runs poorly is go through the carb, and check the ignition. Then I put valve cover gaskets in because most of them leak. If it has a Pcv valve like yours I clean it out. I do the oil change and run it a bit. It usually runs better. Most of the time though it's not running quite right. A miss or an occasional pop through the carb. This is when I check the lash on a solid lifter rig. And yes I pull the covers off hot. But since I already had them off once its easy. Then if it still has symptoms you can more easily narrow it down. I also some were in that process power wash the engine and trans. It really depends on the weather here though. Here there are 4 or 5 months that's not practical. With a clean and good running engine I then can. Look for any oil leaks as I shake down the rig. Honestly besides the valve cover gaskets the only places that usually really leak oil are the front and rear main seals. At this point I use the engine and start to take note of any other symptoms such as oil use or smoke. Then I go through a whole other process. Barry

[Andice]

Well, I am a little late to the party but here is an image of the breather filter canister. Looks like it is pressed in place. Probably very hard to remove because of its location. Glad you got the "clog" resolved. I never would have known there is a mesh filter in there!

[aphaynes]

Thanks BarryGMC for laying all that out there for me!

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Last question for now.

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. Should the distributor have an oring where it sits on the block?

Going to be raining here the next couple of days so my playing is on hold.

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[bigblockv6]

No oring is used, just a thin circular gasket that usually comes with an engine gasket set. I doubt you can buy it alone, most likely you would have to make your own gasket.

[aphaynes]

Originally Posted by bigblockv6

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No oring is used, just a thin circular gasket that usually comes with an engine gasket set. I doubt you can buy it alone, most likely you would have to make your own gasket.

Thanks! When I pulled the distributor it didn't have anything and neither did the gasket set I bought. Thought that was odd.

[bigblockv6]

I bought a FelPro set for my 478, it came with the distributor gasket and also bought a few off brand sets that were compiled with either Victor or Felpro that didn't include the distributor gasket. I like the FelPro gasket set because it's so complete they even included two 4bbl carb gaskets for the optional dealer installed 4bbl manifold.