@Franklin2

I am getting back to my F100. I have not installed the five speed in the truck.

I was curious as to how to mount the master cylinder. There was some conversation about changing out a pedal. However, I believe I have the right pedal in the truck already. As it had originally had the three on the tree. I have the plate on it already.

What I am not sure of is where the master cylinder should be mounted on the firewall. Has anybody else done the five speed swap that would have some pictures or be able to comment on where it should be mounted?




thank you in advance.

 

Lets start with the pedals:
You may have manual pedals but they are for linkage clutch not hydraulic / slave.
The end on the cross shaft that pushes the master is clocked differently and I dont think you can swap the end link as the shaft is also clocked differently but not ever doing this I am not 100% on that just what I seen posted.
So you either need the full pedal assy for hydraulic clutch and non-power brakes (good luck)
or
Get the cross shaft and end link and install it on your pedal assy.
I would get the hydraulic assy and swap everything on the bench then back in your truck.

Again I have not done this but they say tere are 2 little dimples where the bolts holes need to be.
Now being your truck is before they were maybe thinking of hydraulic clutch they may not be there,
I think once you have the right pedal assy installed you can see where the rod should be or better yet install the plate and it will show where they need to be.

BTW you do not have "the plate" what you have is the normal plate all trucks got.
Why would they put a reinfocement plate on a manual linkage truck before hydraulics were in the picture??
You need to get the plate and again it will show where the holes need to be.
My 81 F100 firewall showing the plate all trucks have.


Oh I dont see a ground wire from the motor to the firewall in the picture.
That screw below the throttle cable is the firewall side and on that side of the block I think it is, there is a threaded boss the other end of the wire goes to.
Dave ----

 

Here is a link where they are installing the re-enforcement plates. But they have lots of pictures of the location and what the clutch master cylinder holes look like. Don't get confused with all the holes they are drilling for the plates, the ones you want are the larger hole and the 2 mounting holes for the master are vertically above and below the large hole.

https://www.ford-trucks.com/forums/1...-repair-2.html

 

Going by this picture in that link, I am making my best guess in the picture below.

 

Where can I get the cross shaft and end link?

@Franklin2 gave me a link to a discussion on small and large reinforcement kits that contained the plate. Also trying to track the guy down on oil burners but can’t find his contact info yet.

I think that it’s in the top left corner of the plate that all trucks have. Compared to @Franklin2 link I suspect it’s here.

Approx location of reinforcement plate?



Didn’t know that. Thanks.

Thanks . I redid the engine and there wasn’t one on there.You referring to the bolt circled in the pic?



I’ll have to find the bolt hole that had the threaded stud. Was on the drivers side of the engine correct? On the block or head? Rockauto carries them maybe?Thanks.
Phil

 

If I was installing a juice clutch into a non juice truck I'd get the reinforcement plate from bronco graveyard. Install or fit that in first as it will show you where to drill and will reinforce your firewall at the same time. You don't have to remove the steering column if you cut out a section of the ring around the column so it slips around the column.

 

I am not sure the guy on oilburners sells them anymore. But like was mentioned, Bronco graveyard does.

https://shop.broncograveyard.com/83-...uctinfo/34010/

 

I think the only place to get the shaft and end link is from a junk yard 80 - 86 truck that has a hydraulic clutch.
I would get the whole pedal assy. from the yard. I bet it will be from a power brake truck thing is the power & non-power brake pedals are different where the master / booster hook to it. So you will need to use your brake pedal with the hydraulic clutch cross shaft and end link and why I say get the whole pedal assy.
I dont know if the later year trucks shaft and end link will work or not but I know the whole pedal assy will not swap as a whole.

Your picture if where the holes get drilled looks to be too high. The 2 marks are from factory spot welds.
As said get the plate from Bronco Grave Yard and use it as a template to drill the master mounting holes.

Yes that screw should have a wire and it runs to the left side of the motor. I cant remember if head or block but think block is where the threaded boss is for the other end of the wire. You dont have to get the wire from Rock Auto or LMC or who ever.
I made a 10 gauge wire that I put the ends on for the ground wire. I had everything so if was free.
I dont see why you could not use a 12 gauge wire but for grounds bigger is better.
Local parts store have braided ground straps just get one that is long enough.
Dave ----

 

@Franklin2 @FuzzFace2 I believe that I have the correct pedal assembly.

does this look familiar?

thanks in advance.


Came out of 84 F150 4speed.

 

That looks right but would need to dig out my set to make sure and I think they are in the bottom bin and I got 2 stacks that are 3 high.
It also hot as he11 here and even hotter in my garage but will see what I can come up with.
Dave ----

 

Not sure what year truck you are converting, but 1980 thru 1986 will work. 1987-up are different.

 

Phil[/QUOTE]


@Franklin2 1981 Ford F100 that originally had a three on the tree. Currently has a C4. Installing a Mazda trans.

 

@Franklin2 1981 Ford F100 that originally had a three on the tree. Currently has a C4. Installing a Mazda trans.[/QUOTE]
That overdrive gear will be worth all the trouble once you get it going. Do you know what rear gear ratio you have?

 

Yes. Currently open 2.00.

One

thing about a 9” rear there is plenty of info on it. Rear end will eventually be changed.

 

That is a 2.47 ratio that is what was in my parts truck with. 300 / SROD OD transmission must have been a dog as I got 2.75 ratio with add on OD.
I can run 45 MPH in OD but 50+ MPH is a lot better.
Running 70MPH @ 1800 RPM is nice.
Dave ----