are my front/rear brake lines crossed?

[old man jimmy]

I know this is going to start a bunch of controversy, but they did come with the 50 50 master cyl. I just went out to the garage to take a picture of mine. And I know for 100% sure mine has never been changed. So don't blame to PO's for everything. After all aren't we all PO's?

[drdata]

Originally Posted by old man jimmy

I know this is going to start a bunch of controversy, but they did come with the 50 50 master cyl. I just went out to the garage to take a picture of mine. And I know for 100% sure mine has never been changed. So don't blame to PO's for everything. After all aren't we all PO's?

Interesting. that explains why most searches come back pointing at what I already have. For the money I think i will try a 70/30 swap (should do the valve also). At least then I will know what it's not if the issue remains.

I try to console myself knowing the dude that bought my 78, which I owned for the last 21 years, will have his own PO issues. Still, not all POs are created equal. When I investigated why the front seat would not latch, I found the floor mounter catch to be rotated 180 degrees (the catch hole was on the wrong side). And the latch bolts were pretty much stripped anyway. I tell myself he must have known, and did this on purpose so folks in the rear could tilt the seat up easily...

But that make no sense given the latch release works and is accessible to those in the rear; what a safety hazard. This on a truck where "everything works". Right...

I did this in part to have something to do. Just did not plan on having that much. Have to keep repeating its the journey, not the destination...

Cheers

[old man jimmy]

if you're going to go that far with the brakes. I'd recomend converting to 3/4 ton, their's a lot of post on here on how to. Especially if you plan to run big tires. When mine was new it would lock em up pretty easy. Then I went to Armstong tru trak, which was about the only big tire out their at the time. But they weigh about 75 lbs. each. And all that rotating mass really put a hurt on my breakes. They still lock up, but you almost need both feet to do it.

[Burt4x4]

Here is what the 1Ton dual diapram Booster/Master looks like. The masters resavors are the same size but the lines are swaped...

When I bought the parts I used 72K304x4 Pickup to bolt right into my 72K5 and it doubled my braking power.

[drdata]

Originally Posted by Burt4x4

Here is what the 1Ton dual diapram Booster/Master looks like. The masters resavors are the same size but the lines are swaped...
. . .

When I bought the parts I used 72K304x4 Pickup to bolt right into my 72K5 and it doubled my braking power.

I am interested. Thanks for your post.

To confirm, are you saying that a 1 ton booster and MC will bolt right onto the 72 1/2 ton booster mount with no modifications needed to the brackets or rod length? Sounds like the only issue was reversing the line attachments, which even I can handle.

Did you also swap the proportioning valve?

Regards

[jaros44sr]

I thought I said that up in post # 7

[drdata]

Originally Posted by jaros44sr

I thought I said that up in post # 7

In fact you did. At the time it did not seem this was strictly a MC/booster swap. I was of the mind that I would then need to swap brake calipers, backing plates, etc, to complete the 1 ton upgrade.

I did read a faq on upgrading brakes, but it seems there were so many options and none were as straight forward as "bolt on a new MC/booster".

Hence my followup questions if the 1 tone MC/booster is really just a bolt on upgrade while the rest stays the same.

regards

[Burt4x4]

Originally Posted by drdata

I am interested. Thanks for your post.

To confirm, are you saying that a 1 ton booster and MC will bolt right onto the 72 1/2 ton booster mount with no modifications needed to the brackets or rod length? Sounds like the only issue was reversing the line attachments, which even I can handle.

Did you also swap the proportioning valve?

Regards

Yes & No ~ look for a post from AJ, can't recal the exact title but 1Ton Brake Upgrade should work in the search here. Depending on the style of Booster mount you have will make or brake the "bolt right in" answer. THe post that AJ provided out lines the different booster mounts. My 72K5 the 1Ton master/booster did bolt right in but I had to modify the support brackets as the 1Ton booster is FATer than the 1/2 ton.
good Luck
Burt