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Old 10-07-2018, 08:18 PM
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What's this?

So, I was trying to remove my carb for cleaning.. And I began taking pictures just so i know where every screw goes. I unplugged a suspicious hose (I wasn't sure what it was or if it was meant to be there) (pictures) and when it all came off, I realized the left end wasn't plugged into anything. The right side seemed to be plugged into what I think was a spark plug? What is this hose thing? What is it meant to be plugged into? IllI also attach pictures of other Suspicious hose thing
Suspicious hose
Cut hose 1 (next to carb)
Cut hose with a with screw
Cut hose with a screw attached to another cut hose
hoses which look to be cut..

Last edited by ChelseaHere; 10-07-2018 at 08:20 PM. Reason: Typo
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Old 10-07-2018, 09:45 PM
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Re: What's this?

the last 2 photos are heater hoses... or meant to be. chances are your heater doesnt work

The one at the top of the valve cover is the fresh air IN side of the PCV ventilation system which should suck air from a relatively clean source (air cleaner preferably)

The T piece at the back of the carb is the brake booster line. it provides vacuum to the brake booster on the firewall... no idea where that other end is going though.
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Old 10-07-2018, 10:32 PM
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Re: What's this?

Thanks so much for the information
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Old 10-08-2018, 05:14 PM
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Re: What's this?

Originally Posted by zed-028 View Post
the last 2 photos are heater hoses... or meant to be. chances are your heater doesnt work

The one at the top of the valve cover is the fresh air IN side of the PCV ventilation system which should suck air from a relatively clean source (air cleaner preferably)

The T piece at the back of the carb is the brake booster line. it provides vacuum to the brake booster on the firewall... no idea where that other end is going though.

The last two photos are NOT heater hoses. The one you are touching with the screw in the end, and the one in the last photo pulled back beside it, are 5/16 or 3/8 size hoses attached to the rear vacuum port on the intake. That port is apparently not in use by your current setup (therefore a vacuum leak if active) and should be plugged off.

The hose to the right of that, which connects at the rear of the carb (just above where the intake says "firing order 18436572"), is the vacuum line that connects to the brake booster (can also be seen in your original pics on the other thread).

The T piece at the FRONT of the carb (in your second picture) is connected to the PCV port of the carb, but should be only a single 3/8 hose to the PCV valve on one side of the engine (can be either side). Would work well connected to your passenger side PCV valve (in your third picture, beside your blue fuel filter). The driver side valve cover should have a vented oil fill cap in place of whatever is there now (can't see it too clear in picture).

These older engines only really require 3 vacuum lines. Brake booster, PCV, and vacuum advance (yours appears to be connected correctly) for the canister on the distributor. I hope this is of some help.
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Old 10-08-2018, 05:17 PM
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Re: What's this?


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Old 10-08-2018, 05:19 PM
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Old 10-09-2018, 12:42 AM
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Re: What's this?

I want to thank everyone so so much! Im learning so much and im so grateful to have experienced owners help me. Thank you all so much

Last edited by ChelseaHere; 10-09-2018 at 02:39 AM. Reason: Typo
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Old 10-09-2018, 07:39 AM
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Re: What's this?

Originally Posted by ChelseaHere View Post
For future reference, those red wires are your spark plug wires. The spark plugs are down on the sides of the engine. The plug wires go from those 8 spark plugs up to where they meet at the distributor, which you can see in the photo.
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Old 10-09-2018, 07:47 AM
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Re: What's this?

Originally Posted by SteelDirigible View Post
For future reference, those red wires are your spark plug wires. The spark plugs are down on the sides of the engine. The plug wires go from those 8 spark plugs up to where they meet at the distributor, which you can see in the photo.
Thank you so much! I wasn't so sure what those were!
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Old 10-09-2018, 07:11 PM
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Re: What's this?

Originally Posted by jstadmud View Post
The last two photos are NOT heater hoses. The one you are touching with the screw in the end, and the one in the last photo pulled back beside it, are 5/16 or 3/8 size hoses attached to the rear vacuum port on the intake. That port is apparently not in use by your current setup (therefore a vacuum leak if active) and should be plugged off.

T
yeah i just went and had a look at mine to confirm and you're right, i was mistaken for the one just to the rear of it (the one that usually has the strange crimped fitting that runs to the heater tap.

good spot!
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Old 10-09-2018, 07:42 PM
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Re: What's this?

PCV valve






Vacuum end caps


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Old 10-10-2018, 03:44 PM
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Old 10-10-2018, 04:04 PM
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Re: What's this?

That takes care of the unused vacuum lines sticking up!

I imagine that PCV valve apparatus in the driver side valve cover there is easily removed, could you post a picture with it out? To see what type of oil fill cap might fit that valve cover...

Last edited by jstadmud; 10-10-2018 at 04:06 PM. Reason: added line
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Old 10-10-2018, 04:30 PM
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Re: What's this?

Here it is out



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Old 10-10-2018, 04:31 PM
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Re: What's this?

It's most likely a standard push-in. Here's a simple example, there's a bunch of different ones, and different prices (chrome, black, anodized colors)



To go into the valve cover in place of the black piece there now



....

Last edited by jstadmud; 10-10-2018 at 04:42 PM. Reason: add line
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Old 10-10-2018, 04:34 PM
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Re: What's this?

Originally Posted by jstadmud View Post
It's most likely a standard push-in. Here's a simple example, there's a bunch of different ones, and different prices (chrome, black, anodized colors)

What do these valves do? What do the different kinds do? Should i replace mine?
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Old 10-10-2018, 04:52 PM
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Re: What's this?

This is just a vented oil cap (top and bottom view) that would replace the black piece in the driver side valve cover now, that you just pulled the PCV valve out of

You won't still need the driver side PCV valve if you put the single hose to the passenger side PCV valve.




....
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Old 10-10-2018, 04:54 PM
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Re: What's this?

Originally Posted by jstadmud View Post
These are just a vented oil cap (top and bottom view) that would replace the black piece in the driver side valve cover now, that you just pulled the PCV valve out of

You won't still need the driver side PCV valve if you put the single hose to the passenger side PCV valve.




....
Okay! I'll be sure to add this to my online order! Maybe I can useuonly one for the driver side?
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Old 10-10-2018, 04:57 PM
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Re: What's this?

yes just one for driver side
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Old 10-10-2018, 05:51 PM
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Re: What's this?

I've found valve covers. Some have a "nozzle" or "nipple" for an attachment. Should i buy one for the passenger side? And buy a similar cover for the driver side (but without the "nipple")?

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Old 10-10-2018, 06:09 PM
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Re: What's this?

Originally Posted by ChelseaHere View Post
I've found valve covers. Some have a "nozzle" or "nipple" for an attachment. Should i buy one for the passenger side? And buy a similar cover for the driver side (but without the "nipple")?



The second oil cap picture above (no "nipple") should work good for the driver side.

The only thing you would need for the passenger side is a new PCV valve that looks exactly like the one you pulled out of the driver side (picture in post #14). In fact, if you shake the one you pulled out and it sounds like its loose inside, then its as it should be and could be used on the passenger side without having to buy one.




....
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Old 10-11-2018, 01:37 PM
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Re: What's this?

[QUOTE=ChelseaHere;6256081]

that is the temp controlled vacuum valve .. it is a valve that operates when the engine gets up to temp.

on you PCV engine venting the PCV is on most all GM vehicles on the driver side .. the pass side is the port that allows air into the engine. this is to remove water vapors in the oil .. with a GM air cleaner that air intake port on pass side is heated air from the air box . that was how it is setup ..

my 1984 305 H is not at all how your engine has been altered.. in cold weather the engine will create lots of sludge with that setup as you pictured .

use some gloves when you work on it ,,use mineral sprints to clean up the oil mess.. carb cleaner will damage the hoses wiring plastic parts and paint..

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Old 10-12-2018, 12:11 PM
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Re: What's this?

[QUOTE=jcat;6256294]
Originally Posted by ChelseaHere View Post


that is the temp controlled vacuum valve .. it is a valve that operates when the engine gets up to temp.

on you PCV engine venting the PCV is on most all GM vehicles on the driver side .. the pass side is the port that allows air into the engine. this is to remove water vapors in the oil .. with a GM air cleaner that air intake port on pass side is heated air from the air box . that was how it is setup ..

my 1984 305 H is not at all how your engine has been altered.. in cold weather the engine will create lots of sludge with that setup as you pictured .

use some gloves when you work on it ,,use mineral sprints to clean up the oil mess.. carb cleaner will damage the hoses wiring plastic parts and paint..
As this engine is no longer of stock/original configuration (maybe not even from this vehicle), there will no doubt be differences as to component use and/or setup.

It does NOT matter which side the PCV valve is on. As long as a vented oil cap or filter is installed on the opposite side of the engine, the system will still function as was originally intended. The sbc "V" engine is identical on both sides, as are the cylinder heads. I have built many sbc engines and have setup PCVs on both sides (mostly dependent upon accessory placement and preference to the final look) with the same outcome. No sludge or excess moisture buildup in hot or cold weather environments.

Mineral spirits for cleaning are definitely better than carb cleaner in protecting those plastic pieces, hoses and paint. But as for gloves, I have always thought that if you don''t like getting oil/grease on your hands, you probably shouldn't be under the hood of a car....
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Old 10-12-2018, 03:06 PM
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Re: What's this?

valve covers are different on the port used inside the engine , has a shield pass /driver side not the same fab each side

driver side sucks pass side blows in so different ,,
with how this was so messed up IMO not a big issue now...

...

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Old 10-13-2018, 09:22 AM
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Re: What's this?

Factory valve covers, maybe. But these are Edelbrock Elite Series performance valve covers. They are identical to each other, I assure you. Google it.....
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