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Offline Patrick

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help with Identifying engine ports.
« on: January 31, 2025, 08:50:17 PM »
I need help identifying these ports in the engine block. This Engine was rebuilt at a machine shop. I bought the basket case. It was a boxed frame, a used MD Juan tub, both axles and 12 boxes of parts. I have been working on it for a few years and I'm ready to finish up and get it running. I have some parts, have sourced a few used parts and need to buy the rest. I want to confirm these before ordering the last parts and putting it together.
1 I think is vacuum line.
2 I don't know.
3 I this the oil line to the head and connects to 9?
4 oil Gauge.
5 I don't know.
6 Heater hose out or a brass plug?
7 Radiator hose from top of radiator. Fluid in.
8 Radiator hose in from lower radiator.
9 metal oil line connects to 3.
10 To oil filter?
11 plug with hole for Throttle linkage spring.
12 Coolant temperature gauge port.
13 Heater hose in or a plug?
14 PCV cup. has pcv valve. Other end connects to 1?

1954 CJ3B F134
Thanks!
« Last Edit: February 01, 2025, 12:28:51 AM by Patrick »

Online Rus Curtis

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Re: help with Identifying engine ports.
« Reply #1 on: January 31, 2025, 11:37:26 PM »
Patrick,
I've found most of these on the many pages of the CJ3B Page.  Mostly in the Tech section.  You just have to poke around. 

Here are the short answers.

1: Yes - the intake manifold vacuum port for vacuum tube from PCV at 14.
2. Coolant drain - where the petcock would be (one on the bottom of the radiator too).
3. Yes. Oil circulation up to head (see 9) via 1/4" tube.
4: Yes. Oil pressure gauge flex hose to tube.
5: Optional by-pass for coolant connects to plug on water pump directly below. Otherwise, a pipe plug to close the hole.
6: 45* bend elbow for heater hose (other hose goes up to back of head - see 12). Or yes, plug if no heater. Doesn't need to be brass.
7: Yes. Top radiator hose (that's the thermostat housing) the "return" back to the radiator.
8: Yes. Bottom radiator hose (inlet).
9: Yes. Where oil line from 3 connects
10: Needed for block manufacturing.  Needs plug.
11: Yes. Needed for block manufacturing.  Needs special plug with small hole drilled through square head for return spring.
12: No.  For heater shut-off valve (where heater return hose is connected - see 6).
13: This is the temperature sending unit for temp gauge.
14: Yes. Connects to "T" fitting after PCV then around to 3.

Hopefully, those boxes contain the parts you're needing to add to the block.
'54 CJ-3B "Green Gruntt"
Bantam T3-C

Offline Patrick

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Re: help with Identifying engine ports.
« Reply #2 on: February 01, 2025, 12:28:12 AM »
Thanks! I have some parts. The PCV "T" : I've seen where the left side of the T connects to the fuel pump, correct? I don't have a fuel pump yet so I cant look at it. I will probably make my own vacuum line out of metal fuel line. Is 10 where the upper, long flex hose from the oil filter goes? Or where does it go?

Online Rus Curtis

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Re: help with Identifying engine ports.
« Reply #3 on: February 01, 2025, 08:14:55 AM »
Thanks! I have some parts. The PCV "T" : I've seen where the left side of the T connects to the fuel pump, correct?

Yes!

Quote
Is 10 where the upper, long flex hose from the oil filter goes? Or where does it go?

No. Both 10 and 11 (as I understand it) were used when boring the galley and since you can't leave a hole where the oil comes out, seal it with a pipe plug.  The hole you're looking for to attach the oil cannister inlet hose is further towards the front (literally under the fuel pump) and is a perpendicular hole vs. the angled hole that #10 is.  You'll need a 90* fitting to attach the hose so it hugs the engine. 

As I mentioned, many of these are found on the 3B Page.  For example, here's an image of Piet's '56 engine from the Tech Page under "Engine Specs and Photos"





While we're at it, there should also be some plugs INSIDE the block that can sometimes go missing when an engine gets cleaned at a shop.  If your oil pan is still off look to see if they're in place.  If missing, you'll get no oil pressure when cranking.  These are highlighted in Eric Lawson's rebuild on page 2.

https://cj3b.info/Engine/Rebuild.html
« Last Edit: February 01, 2025, 08:18:45 AM by Rus Curtis »
'54 CJ-3B "Green Gruntt"
Bantam T3-C

Offline Patrick

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Re: help with Identifying engine ports.
« Reply #4 on: February 01, 2025, 11:13:09 AM »
Thanks. I have been burning my eyes out reading and looking at pictures for years. I have found most of what I needed. The whole thing has been a bit overwhelming. This being my 1st Willys, I just had to take it one bite at a time. Somehow I missed the engine rebuild page. I rebuilt my 1st engine at 15 years old, now 60. Maybe since I didn't rebuild this engine I didn't look there. IDK. I looked back on old pictures when I had the oil pan off and the plugs are in there.