intake manifold variations (FAQ) (1 Viewer)

[PabloCruise]

The question was posed in a separate thread, but I thought it would be easier to find this info later if it was posted directly on topic in it's own thread.

58-9/66: F135 Engine [3.9 liter] 1bbl cast iron intake standard, 2bbl optional. 4 bolt attachment to exhaust manifold

9/66-9/69: F145 Engine[3.9 liter] 2bbl aluminum intake with wide runners standard. 3bolt attachment to exhaust. 4 bolt bosses on the side of the intake for oil filter bracket, which attached via an adapter plate.

10/69-1/72: F145 Engine[3.9 liter] 2bbl intake with narrow runners. 69 and 70 models had one vacuum port only, for the 4wd shifter. 71 had one port on the side for the brake booster. 72 added a second one in front of the carb for filtered manifold vacuum.

1/72-12/74: F155 Engine[ 3.9 liter] 2bbl intake with narrow runners. 74 Cali intake is distinguishable because there is a large hole in the side of the intake under the carb for the Cali-spec EGR system.

1/75-1/79: 2F [4.2 liter] 2bbl intake with 5 bolt attachement to exhaust. Port behind carb for brake booster, port under carb for PCV, port in front of carb for filtered vacuum source.

1/79-9/87 2F [4.2 liter] 2bbl aluminum intake with 5 bolt attachment to exhaust. Main distinction from earlier 2F intakes is that EGR ports into the side of the intake underneath the carb, alongside the PCV system.

Great to see this thread back!

I have a leak between my intake and exhaust on my '78 2F.

I inherited an intake/exhaust off a 60 that I could replace the gaskets on and drop in my '78 40 if:
1) the exhaust is the same
2) My EGR will fit to the later manifold.

Can anyone answer my questions or post pictures showing the two different EGR connections?

Why do you want to swap it out?

Your 1978 exhaust manifold should be the three-piece design, giving you the same advantages/problems as the later model you are looking to install.

I would have the intake and exhaust manifold to cylinder head mating surface trued at a machine shop, and run it.

Your current EGR system is not going to bolt up and work with the later model exhaust manifold.

Like Steve said, the intake and exhaust are different, with EGR killing my idea to build a replacement set of manifolds off the 40 and then simply swap them on.

Pictured are a '79-'87 intake/exhaust combo on top and a '75-'79 intake on bottom.

You can see the '79-'87 exhaust has the EGR port on the back elbow, while the '75-'79 exhaust ports the EGR on the center portion body of the manifold.

 

[Hugh Heifer]

Are those fluid chambered heat risers worth anything?
Pablo's is the first one I have ever seen mounted.

 

[rsbcruiser]

Are those fluid chambered heat risers worth anything?
Pablo's is the first one I have ever seen mounted.

Honestly HH, I installed a Man-a-fre fluid heat exchanger on my f 1.5 after I went to headers. Did not detect a difference in performance. I doubt the coolant based system approaches the heat exchange rate of the exhaust based system. What I think it does do is equalize the temperature extremes. i.e., I bet it acts as a manifold cooler in summer and a heater in winter. At least I hope it does. I suspect the shiny bobble effect might have overcome the Engineering logic that time.

 

[Hugh Heifer]

.... the shiny bobble effect might have overcome the Engineering logic that time.

 

[softdrinkviking]

Honestly HH, I installed a Man-a-fre fluid heat exchanger on my f 1.5 after I went to headers. Did not detect a difference in performance. I doubt the coolant based system approaches the heat exchange rate of the exhaust based system. What I think it does do is equalize the temperature extremes. i.e., I bet it acts as a manifold cooler in summer and a heater in winter. At least I hope it does. I suspect the shiny bobble effect might have overcome the Engineering logic that time.

when i first got my cruiser, i had MAF headers from PO, and they hadn't installed the hoses to the liquid heat riser, but it was on there.
i had problems with the carb running, not so good, and then after i hooked the kit into the heater path, it seemed to fix the issue. i didn't change anything else, it was the only variable at the time.
so, i leave it on.
eventually, i will go back to headers, but i have bigger fish to fry at the moment.

 

[softdrinkviking]

1971 f 155???

10/69-1/72: F145 Engine[3.9 liter] 2bbl intake with narrow runners. 69 and 70 models had one vacuum port only, for the 4wd shifter. 71 had one port on the side for the brake booster. 72 added a second one in front of the carb for filtered manifold vacuum.

Is this chart 100%?
My 1971 had an F155 in it when I bought it, so I assumed that it was correct for the year.
I guess it could have been switched by the PO, but given the state of the vehicle, it just seems really unlikely.

 

[Fantasma-4x4]

After all this time. What is better?, Wide or narrow runners?.

I have these. And I have a header 6 to 1 (Tri-Mil from JoeTLC), and the wide runner seems to work well with this, no issues.

 

[Mikesta]

Hope you don't mind if I tag along on this thread. I attempted to create one and failed and hope it gets deleted because this thread has everything I wanted to know. Thanks Mark!

Here are a few more pictures and part numbers of the different manifolds

A picture of a 4 different intakes

17111-60121 - 1979 to 1987 2F close ups

17111-61010 - 1975 to 1979 2F Intake Close ups

No numbered 1F from 1970 to.... 75?

1F Wide bodied Pre 1970?

These are all from a thread I started until someone pointed me here. Feel free to use any of these pictures in the first post under the descriptions.... If you do I'll deleted this post.

One additional comment that I didn't see in this thread is that there are different numbers on the opposite of the part numbers..... I believe these signify the casting batch or year produced???? anyone know?

 

[PabloCruise]

Hope you don't mind if I tag along on this thread. I attempted to create one and failed and hope it gets deleted because this thread has everything I wanted to know. Thanks Mark!

Here are a few more pictures and part numbers of the different manifolds

A picture of a 4 different intakes

17111-60121 - 1979 to 1987 2F close ups

17111-61010 - 1975 to 1979 2F Intake Close ups

No numbered 1F from 1970 to.... 75?

1F Wide bodied Pre 1970?

These are all from a thread I started until someone pointed me here. Feel free to use any of these pictures in the first post under the descriptions.... If you do I'll deleted this post.

One additional comment that I didn't see in this thread is that there are different numbers on the opposite of the part numbers..... I believe these signify the casting batch or year produced???? anyone know?

Good images, thanks!

 

[cuencanolenny]

It has been awhile since I had the header and intake in my possession and I never had positioned them together like this. After reading many comments about mismatched flanges I was pleased to see how close mine are. This is an MAF 6-1 header that has been ceramic coated. I'm not sure of the vintage of the intake manifold, Ebay purchase nearly two years ago (along with the header) that were shipped to Seattle for the coating process. Today I took a look at things and noticed promptly that my cylinder head has only seven fastener locations, missing the one for exhaust on the front end as shown in the picture. For those of you knowledgeable on this subject, can I use this header/intake combination? Should I drill and tap for the forward header attach location? This is a 1970 non-USA "F" engine. Thank you.

 

[40LandCruising]

I know i'm a little late to this one , but after driving out 73' 40 in place of my daily driver for the past few days, we definitely need to fix the carb. I was considering changing from the stock carb to a ford motorcraft 2100, as they are known to be great off-road, from my understanding they are a large pattern intake. @65swb45, when you say the 72'-74' intakes have narrow runners, is that the same as a small pattern intake? I have limited knowledge on terminology.

 

[Poser]

when you say the 72'-74' intakes have narrow runners, is that the same as a small pattern intake? I have limited knowledge on terminology.

Go back and look at post #12.

Wide/narrow are very clear.

Carb mounting flange on two barrel are all the same.

 

[65swb45]

If you're gonna run a motocrap, all you need is a Holley adapter plate. I have one for $20, but have a $100 order minimum.