32/36 DFEV Carb Installation - Help!!

[leigh0680]

I'm almost finished installing a new single-plane manifold and the carb in my 79 2000. Thank you to all who have posted before!!!! I couldn't have done it (almost) without you. This post - https://fiatspider.com/f15/viewtopic.php?f=17&t=6967- was particularly helpful!!

Now I'm almost done but am stuck on a few last hoses, inlets and left-over emissions junk. I'm pretty sure what they are, but I'm scared to attach what I think are the two coolant hoses and end up routing coolant somewhere where it's not supposed to go. I have an auto tran and am also not sure if I have the right hose attached to the manifold. Finally, not sure what to do with a few remaining emissions (I'm assuming) pieces. (If you haven't guessed already, I'm not an expert mechanic). Sure wish these kits were sold with instructions for people like me....

So here are the pics:
(1)
The hose in the pic above with the white plastic connector coming out of it wraps under and attaches at the brake booster. (Ignore the white plastic connector - I stuck that in there.) I'm hoping the other coolant hose connects to it and was setting it up but realized I really wasn't sure. Doesn't seem logical to me that coolant would route into the master cylinder. If not, what's the use of this hose? Do I need it?

(2)
This hose I'm positive is one of the coolant hoses - it routes along the firewall behind the engine and links into the coolant system. But since I'm posting anyway decided to confirm with those more knowledgeable.

(3)
This rubber/metal hose goes back toward the firewall and then down toward the transmission. I can't see where it terminates. I currently have it attached to the manifold as the transmission pressure regulator. Yes? No? Please help. If it's not the transmission pressure regulator, then were is that? Other posts have made reference to the need to attach a transmission connection for proper auto tran shifting.

(4)
Picture of the carb in place.

(5)
I capped these thingies on the top of the manifold but not even sure what they are. Should I leave in place? Remove?

(6)
I'm not sure what this thing is either. It's located underneath the manifold with a wide inlet that leads into the lower engine block. What is this? I currently have the inlet covered over with gorilla tape, but not sure if I should leave, remove, leave open, close.

I feel like I'm so close and can't wait to get my car on the road again in its new improved form. Advice would be greatly appreciated!!!!

[aj81spider]

Can't help you with all of it, and if anyone contradicts me believe them. However:

The last picture is your crankcase breather oil vapor separator. The open end of that feeds into your air cleaner (or does on my car) so the oil vapors can get sucked back into the engine and burned up.

On the first picture does that hose connect to the master cylinder or to the brake booster. The first would confuse me, the second means it's a vacuum hose that is used to provide brake assist at the booster. Not sure what the plastic thing is connected to it, though.

[Mrgreer]

Wow, I'll give it my best shot, it's easier when you can see the whole thing.

1) that looks like the end of the crankcase oil separator that attaches to the air filter housing, the other end should attach to the open end in picture 6, of the oil separator.

2) are you sure it's a heater hose? It doesn't look large enough, and there are no heater components on the drivers side of the car. Looks more like it should attach to the intake manifold as a vacuum line to me.

3) I have no auto trans experience, can't help on this.

4) No comment

5) I took mine out and plugged them, it's emission related, so you have to decide.

6) see reply to picture 1.

Hope this helps some.

[leigh0680]

Thank you both! Very helpful. I won't be at my car til tomorrow but will try to post a picture then of everything under the hood.

1. aj81 spider, you are right - the hose in pic 1 connects to the brake booster (I used the wrong word) and used to connect to the old manifold. Don't know what to do with it now as the new manifold has no connection for it. Is it needed or can I block it off? Also, if i understand you right, you're saying it's not one of the two coolant lines. If it's not, where's the other f$#&* one? Driving me crazy, since all the other posts say there will be two heater hoses that need to be attached. Mrgreer, sorry for the bad pics - it's not the end of the crankcase oil separator - I pulled that hose off as it attached to the old air cleaner, which I replaced cause it's not compatible with this carb.

2) Yeah, it's a coolant hose. When I start the engine coolant flows out....

6) The new air cleaner doesn't have a connection for this hose to the crankcase breather. Can I disconnect and plug? If it's pure emissions, that's what I'll do as my state doesn't care. I'm just worried that by plugging it I'll mess up the oil pressure and have oil seeping out from all the gaskets....

[tonym]

Ok, I just did all of this on my '79 Spider but it's manual trans so can't comment on the transmission lines.

#1 is definitely the vacuum line for the brake booster, should be connected to the intake manifold below the carb for full time vacuum and to the brake booster.

#2 looks like coolant hose. Coolant runs from water pump, through firewall to heater core, then back out of heater core to port on top of the head.

#3 Looks like transmission hose.

#4 Air filter should have hole on underside that has to connect to that oil breather hose in #6. My cleaner came with a plastic component to connect to it but you may have to rig some different size heater hoses to make the connection. Doesn't have to be watertight, just venting vapors.

#5 Yes, cap these, they are emission related.

#6 See #4 answer.

Hope that helps. Also make sure any open vacuum ports are capped as well if you have removed all of the emissions components.

[leigh0680]

Tonym, thank you for taking the time! It's great to learn from your experience. And you're helping save my relationship with my girlfriend - another weekend of me under the hood would probably put her over the edge.

I'll be back with my car tomorrow and suspect I'll be able to fix most of the outstanding issues based on your advice. Will probably have to order another connector to screw into the manifold, so more waiting....

The one thing I'm still unclear on after reading your replies is where I should be looking to find what #2 (the coolant hose) should attach to....

[tonym]

Just remembered that the original carb had the coolant lines controlling the choke. Your new carb is electric so the cooling hoses for the choke need to be removed. I did disable my heater core and did a bypass.

[aj81spider]

Relative to the brake booster hose - the connection to the manifold provides vacuum to the booster for it to work. You can block it off. However your brakes will be much harder to use (the booster boosts your pedal effort).

[Mrgreer]

Upon further review, and with the additional information here are a couple more thoughts.
1) the white plastic fitting on the end of that hose looks like what's connected to my K&N filter for my 32/36 DFEV on my 79 spider. I guess that's what had me thinking that direction. After looking at my car, just picked it up from the upholstery shop, that hose is larger in diameter than the one in your picture.
2) that is not a heater hose, the heater hose that runs back into the head is the one in the picture that is behind the carb linkage and is larger in diameter. I think the post referencing a water choke carb is on point. It would be both the correct diameter and location for a water choke.

[tonym]

Two more comments:

He said to ignore the white plastic connector; he stuck that in there.

Second, if you're going to continue working on the car (and you will, it's a Fiat), get the Haynes Shop Manual and the Brooklands Manual. I believe both are available on Vick Auto. Best $80 I spent.

[Nanonevol]

Yes, a manual would help. Those "Thingies" on top of the manifold - are they not the senders for the temperature gauge and light?

[leigh0680]

Tonym, thanks! I just bit the bullet and ordered the Haynes....funny how the internet and all the info available has made it harder psychologically to shell out money for a good book. And thanks for pointing out about the white connector. I stuck that there while I was floundering but now it's where it should be.

MrGreer, you're right - that's the coolant hose that was connected to the water-choked carb I pulled out. What I'm still stuck on is whether I should connect it to one of the other coolant hoses or just remove or disconnect....wouldn't there have been an incoming and outgoing hose on the old setup?

Tonym, you mention "hoses" plural but I don't see any others that became available because of the swap...and being I'm in MN I don't want to disconnect the heater core like you did. Some other posts I've seen talk about connecting two coolant hoses as part of the carb conversion by adding a T connection....idk.

Plus one final "mystery" hose here that starts out as rubber, changes to metal, and runs from the driver's side back along the firewall and then into the passenger side wheel well just below the coolant tank. What is this thing? I believe it was originally connected to the old header, but it may have been connected to the carb.

The hose I'm talking about is the one at the bottom of the picture with the cork just below the round emissions thingy with the blue tape:


Here it is again (the white metal) after wrapping all the way around the firewall to the passenger side. It's hard to see, but it goes through a hole in the sidewall...from there I don't know.


Aside from that, thank you all! I'm making great progress based on your advice - been up at 5 am before work each day this week. Hope to have it running this weekend (fingers crossed); here in MN every beautiful day my car is not running is one less day to enjoy it before it's parked for the endless winter. Your advice was invaluable in sorting both the brake booster line (I had that all messed up) as well as properly connecting the oil breather stuff in the block to the new air filter.

[Slartibartfaster]

Not sure if this will be helpful... when I did this I labeled the connections for everything I unhooked from the carb and took photos along the way. Last pics are everything that is now in a box instead of on the car choking off performance..hope the link works:

https://photos.app.goo.gl/vZk2BadFMYMbe8JJA

[Mrgreer]

Unless they have updated it, the Haynes only covers up through the 1800, so 1978. I would suggest the reprint of the factory manual. Vick's probably has them, I know Auto Ricambi does, I even think there is one online, that you can download.

For the person who asked if those large "things" on the head were temp sensors, no, the temp sensors are much smaller.

I converted my '79 spider to the 32/36 DFEV about 20 years ago, so I don't recall a lot of the details. Along with the carb, I swapped out the intake manifold to a single plane, removed all the smog stuff, and later changed the intake cam, oversized valves, high compression pistons, and ceramic coated header. It's a different car, way different.

I'll take a look at the factory manual Friday and let you know what I find.

[Mrgreer]

Mistry hose above, is it the one connected to the small metal cylinder? I can't tell for sure from the picture. If it is, it could be the fuel return and would be connected to the carb. If I could figure out how to post pictures from iPad , I could show you how mine is set up.