Need Help w/swapping out a Weber for a remanufactured factory carb on 1976 FJ40 (1 Viewer)

[SalmonMan]

I’m removing the Weber and replacing it with a remanufactured carb for this FJ. Found out why the Weber would only run with the choke closed. First, the PO only finger tightened the bolts. Second, the adaptor plates are warped. Gee, no air leaks there.

Without having an original carb to work from, have several questions. Also, manufacturer had post 08/76 and pre 08/76 carbs. Not knowing when this FJ was built, went with the post 08/76 carb. Did I screw up?

1st - this hose comes from one of the adapter plates for the Weber and runs to the brake booster. Where should this hose be mounted?

2nd - Where should the solenoid wire attach? I located a green plug and was wondering if that’s where.

Here’s a photo of the green plug. Also, what are the solenoids shown in the photo? Any idea as to what the brown plug is? Heat gauge does not appear to be working.

3rd - Where does this plug into? The large tube showing to the right - where does it go? I just picked up a stock air filter for this FJ.

4th - Any idea as to what the black capped tubes are for? Large one appears to be associated with the fuel inlet housing.

And lastly, where can I buy a mounting plate for the carb to manifold? Appears I need at least ½” thick plate for everything to clear the manifold.

Thank you!

 

[firefighterjed]

Following, because I too have a ‘76 with a Weber. I have a Trollhole original style carb to try, but just haven’t gotten around to it.

I do know that the spacer your looking for also has a heat shield on it. Search for carb spacer heat shield and you’ll find what you’re looking for.

Looking forward to learning from your experience so take lots of pics! . And thanks in advance.

 

[SalmonMan]

Following, because I too have a ‘76 with a Weber. I have a Trollhole original style carb to try, but just haven’t gotten around to it.

I do know that the spacer your looking for also has a heat shield on it. Search for carb spacer heat shield and you’ll find what you’re looking for.

Looking forward to learning from your experience so take lots of pics! . And thanks in advance.

Will do. The only problem I've seen with the heat shields that I've been able to locate is that there is no provision for the brake booster line. Even with the heat shield, still appears I need a riser plate. I'm thinking I probably only need the riser plate, but I could be wrong.

BTW, nice looking rig!

 

[firefighterjed]

Thanks!
I’ll look when I get home, but I think that my booster connects to the intake manifold, not the riser.
Maybe post a pic of your engine compartment and the carb. Better minds than mine will be able to tell you what you need.

 

[SalmonMan]

Thanks!
I’ll look when I get home, but I think that my booster connects to the intake manifold, not the riser.
Maybe post a pic of your engine compartment and the carb. Better minds than mine will be able to tell you what you need.

Please send a photo if that's the case. Would definitely simplify things.

 

[firefighterjed]

Intake manifold connection near the firewall feeds a black hose that goes to my brake booster.

 

[SalmonMan]

Intake manifold connection near the firewall feeds a black hose that goes to my brake booster.

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Great! Ok, took care of that. I see your green plug is hooked up to the solenoid closest to the carb. So, answers that question. Could you take a photo of your intake manifold below the carb? I had to remove some kind of vacuum connector as it had a hose running from it to the point where you have the brake booster hose connected. So, curious if this is just plugged off or something else going on. Are we having fun yet? Ugh. Thus far, no responses from anyone else for assistance on the wiring of the carb.

 

[rkymtnflyfisher]

no responses from anyone else for assistance on the wiring of the carb.

You need 12v to the idle control solenoid when the key is on.

Could you take a photo of your intake manifold below the carb?

Show us a pic of what your'e dealing with.

 

[SalmonMan]

You need 12v to the idle control solenoid when the key is on.




Show us a pic of what your'e dealing with.

Ok. So, could I use the wire that went to the automatic choke on the Weber? It's setup this way. Any idea as to where this solenoid hooks up? It's at the base of the carb, obviously.

 

[SalmonMan]

Ok. So, could I use the wire that went to the automatic choke on the Weber? It's setup this way. Any idea as to where this solenoid hooks up? It's at the base of the carb, obviously.

View attachment 2087532

Also, that capped tube marked #5, can I use it for a vacuum connection? And the large tube to the right, what does it connect to?

 

[rkymtnflyfisher]

Any idea as to where this solenoid hooks up? It's at the base of the carb, obviously.

I'm thinking that might be something for emissions.

And the large tube to the right, what does it connect to?

EGR, I believe.

 

[rkymtnflyfisher]

that capped tube marked #5, can I use it for a vacuum connection?

I believe so, it may be a metered vacuum, gradually increasing vacuum as engine speed/load increase.

 

[rkymtnflyfisher]

Is that a Kali spec carb?

Never mind.

 

[SalmonMan]

I'm thinking that might be something for emissions.


EGR, I believe.

EGR?? So, probably don't need to hook up that lower solenoid if emissions related. The Fed emission system has been pretty much gutted on this thing.

 

[SalmonMan]

Is that a Kali spec carb?

Never mind.

Not supposed to be. I had that option to order and didn't.

 

[rkymtnflyfisher]

EGR?? So, probably don't need to hook up that lower solenoid if emissions related. The Fed emission system has been pretty much gutted on this thing.

Yeah, I'm not much help with the smog party. I run a Non-US spec carb with no emissions crap.

 

[SalmonMan]

Yeah, I'm not much help with the smog party. I run a Non-US spec carb with no emissions crap.

This will be pretty much the same as it'd be a nightmare to try and reconnect all of that.

 

[rkymtnflyfisher]

This will be pretty much the same as it'd be a nightmare to try and reconnect all of that.

On the bright side it's hard to hurt that engine.

 

[SalmonMan]

On the bright side it's hard to hurt that engine.

That's what I've heard. Thanks for all of your help. It was greatly appreciated.

 

[SalmonMan]

Intake manifold connection near the firewall feeds a black hose that goes to my brake booster.


Ok, think I have about everything figured out with your help and flyfisher. I have a lead on the carb insulator plate - not cheap. So, as I get this thing assembled, I will send you photos as promised. It'll be awhile because of shipping.
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