| Author |
Message |
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
 Posted: Wed Jul 09, 2014 10:18 pm Post subject: What is this pipe for? |
 |
|
Sorry but I'm not home right now to take a photo but I will take one if my explanation will not be good enough. In my 71 bus, if you look at the engine compartment, on the right side, up front, right at the very corner (near the gas filler), there is a small pipe probably 1/2" diameter and protruding 1/2"-3/4". What is this pipe for? Does this pipe suppose to have a hose that connect to somewhere? Like the canister (which I don't have). I know this is not the overfill drain when you overfill your gas coz that one goes straight down outside. So what is this pipe for?
Edit: here is a picture of the pipe. It's in the center of the photo.
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy
Last edited by blackivory69 on Thu Jul 10, 2014 8:28 am; edited 1 time in total |
|
| Back to top |
|
 |
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51128
Location: Surrey B.C. Canada, but thinking of Ukraine
|
|
| Back to top |
|
|
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
| Posted: Thu Jul 10, 2014 8:26 am Post subject: |
|
|
Thank you busdaddy.
| Bookwus wrote: |
| The small 3 mm hose from the small port on the front of the emissions canister connects to the metal tube protruding through the bodywork at the extreme upper right hand corner of the engine compartment. When you check this out you will notice that the tube is not the same size as the port on the emission canister. That means you will have to rig up a hose with a small end and a larger end. |
Ok. Now I know it goes to the canister. But I don't have it for now. So where should I connect it? Should I install a Tee from my oil filler breather hose that connected to the air cleaner and connect it from there or buy a breather box? Or plug it? Or leave it like that? Here's a pic of my engine; (I know the Empi fan shroud sucks.  The fuel hose that hanging will be connected to the carb)
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy |
|
| Back to top |
|
|
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
| Posted: Thu Jul 10, 2014 8:32 am Post subject: |
|
|
Could anybody please tell me where that pipe is coming from? I searched here and Ratwell's but no definite answer. 
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy |
|
| Back to top |
|
|
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51128
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Thu Jul 10, 2014 9:07 am Post subject: |
|
|
It comes from the top end of the vapor loop above the fuel tank, it's the vent since the gas cap is sealed. 68-70 vent that into the gas filler well behind the filler door, Euro 71's vent it directly to the oil bath air cleaner, smog models vent the same but through the charcoal canister first. You could vent it to your aircleaner but you'll need a flame trap of some sort for it, maybe in your case with that clusterf**k of EMPI goodness in there you'd be better off just adding a hose and drilling a hole in the battery tray so it can drain outside if it ever overflows.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
| Posted: Thu Jul 10, 2014 9:54 am Post subject: |
|
|
| busdaddy wrote: |
| It comes from the top end of the vapor loop above the fuel tank, it's the vent since the gas cap is sealed. 68-70 vent that into the gas filler well behind the filler door, Euro 71's vent it directly to the oil bath air cleaner, smog models vent the same but through the charcoal canister first. You could vent it to your aircleaner but you'll need a flame trap of some sort for it, maybe in your case with that clusterf**k of EMPI goodness in there you'd be better off just adding a hose and drilling a hole in the battery tray so it can drain outside if it ever overflows. |
I see. So that is the drain when you overfilled the gas tank. My 70 DC goes straight down to the road so I thought that wasn't it.
I agree with you busdaddy, these EMPI clusterf**k will change on my other engine build. But to be fair with EMPI, I didn't really read a bad review on that 38 EGAS carb. So I'll do a review on that once I get her running. We'll see. Thanks again busdaddy. 
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy |
|
| Back to top |
|
|
1967250s
Samba Member
Joined: May 02, 2007
Posts: 2137
|
| Posted: Thu Jul 10, 2014 11:02 am Post subject: |
|
|
| I'm guessing that you know to plug up those big holes in the shroud? |
|
| Back to top |
|
|
busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51128
Location: Surrey B.C. Canada, but thinking of Ukraine
|
| Posted: Thu Jul 10, 2014 12:36 pm Post subject: |
|
|
| blackivory69 wrote: |
| busdaddy wrote: |
| It comes from the top end of the vapor loop above the fuel tank, it's the vent since the gas cap is sealed. 68-70 vent that into the gas filler well behind the filler door, Euro 71's vent it directly to the oil bath air cleaner, smog models vent the same but through the charcoal canister first. You could vent it to your aircleaner but you'll need a flame trap of some sort for it, maybe in your case with that clusterf**k of EMPI goodness in there you'd be better off just adding a hose and drilling a hole in the battery tray so it can drain outside if it ever overflows. |
I see. So that is the drain when you overfilled the gas tank. My 70 DC goes straight down to the road so I thought that wasn't it. |
No, the drain from the filler neck well is larger and goes down between the inner fender and the frame rail, it's visible in your pic just ahead of the aircleaner stand.
The vent comes off the highest point in a sloping steel tube loop that sits above the fuel tank and is connected to the vent nipples on the tank.
(this ones not connected but you can see the other end of that tube)
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
|
| Back to top |
|
|
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
| Posted: Thu Jul 10, 2014 4:45 pm Post subject: |
|
|
| 1967250s wrote: |
| I'm guessing that you know to plug up those big holes in the shroud? |
I'll be using my heater boxes so fresh air duct/hoses will be installed there. Thanks.
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy |
|
| Back to top |
|
|
blackivory69
Samba Member
Joined: April 08, 2013
Posts: 309
Location: California
|
| Posted: Thu Jul 10, 2014 4:58 pm Post subject: |
|
|
| busdaddy wrote: |
No, the drain from the filler neck well is larger and goes down between the inner fender and the frame rail, it's visible in your pic just ahead of the aircleaner stand.
The vent comes off the highest point in a sloping steel tube loop that sits above the fuel tank and is connected to the vent nipples on the tank.
(this ones not connected but you can see the other end of that tube)
|
Ahhhh. I see. That is the vent for the tank so that the liquid will flow. Got it. So vapor is coming out from there then. Ok. Do you think it's better to install a TEE between my oil filler breather hose and carb ? So the vapor will suck in by the carb and burn it instead of letting it go in the atmosphere?
_________________
1970 Double Cab. Stock engine (1600 SP)
1973 Thing (Mexican Safari)
1970 Karmann Ghia Convertible
1969 Buggy |
|
| Back to top |
|
|
|
