OBS Hydroboost Swap!
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- Опубліковано 6 кві 2023
- Today, we're going to cover the basics of installing a Hydroboost in your OBS truck!
This is a bolt in modification, however some rebuild units don't come as a whole assembly, and you may need parts from an original unit. I didn't cover that in the video because there are too many variables on what can, and can not come with a rebuilt unit. We will continue to provide OBS Content for you all to watch and enjoy.
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The information provided in this video, and description are for informational purposes only. I am not a certified professional, and the use of this information or advice is at the viewers risk. - Авто та транспорт
You’re putting out very helpful videos, much appreciated in the community!
I am very pleased that the videos are being helpful. I try to put out useful and informative videos. Not trying to do a bait and switch like most do.
I, too, heartily recommend the hydroboost conversion for these trucks. I converted my '95 F350 about 13 years ago using components from a 1988 F-Super Duty. Mine, however, does not have the diesel engine; it has the 351W. Concurrent to the hydroboost conversion I also changed out the Ford C-II pump for a Saginaw unit. I had also converted it to 4WD using TTB axles with GM large spindles & brakes from a '75 K20. These, of course, are single piston calipers so the hydroboost helped all the more with braking. I also changed out the factory fluid cooling loop for a finned cooling assembly from a Super Duty. One thing I did not do, though, was change out or modify the brake pedal arm. All has worked without problems but I see how making this modification would be beneficial so I may just modify another pedal assembly and change it out sometime. The one area I will take exception with you on is the matter of Teeing the two return lines together. This can, under certain circumstances, compromise either braking, steering, or both by impeding the flow of the fluid which is why the factory systems have two separate returns into the pump reservoir.
Sounds like you did some work on that! Good to see some out of the box thinking.
I will agree that two separate returns is better. I have not had any issues with the T’d return either though.
A few sites claimed a 1986 k30 ps to hb hose would work with the saginaw. I can't confirm one way or another. what hose did you use for the saginaw pump to hydroboost?
@@TropicBreezeRealty I used the OEM hose. However this is a type of saginaw, not the typical pump you’d find on the V8 gas trucks
@@GarrettsOBSGarage The OEM hose from the doner van bracket and pump? or the OEM hose from the doner f350 hydroboost truck? I think the f350 OEM hose only worked with the CII power steering pump.
@@TropicBreezeRealty I used the hydroboost OEM hose.
Helpfull video. Although having the factory pedal provides a bolt in option, the Hydro-Boost mounting bracket adapter can be removed, and a custom one made to mount your Hydro-Boost to your custom application. Also if you pull a Hydro-Boost most were ran with disc brakes all round, so buying and installing a adjustable proportioning valve give the ability to fine tune your rear brakes.
Thanks! The mount location isn't so much the problem, as it is the leverage. Changing the mounting point height provides a different leverage at the pedal. If you drive a hydroboost truck without a hydroboost pedal, you'd wouldn't really tell its not as easy to push, until you drive one with a hydroboost pedal. As for the proportioning valve. If you run disc brakes in the rear, you can run the F-superduty master with its respective fitting on the master, if you're running drums, you can use the fitting off of the drum master to get the proper pressure for the rear drums.
I’ll bring my truck up we can do a “how to install” video 😂
I have Brent’s truck for that. Lol
Likes this video very helpful
Another great video! Very informative. Keep up the great work.
Thank you!
It would be great to hear you share your knowledge on intercooling an obs. I have a 99 intercooler, piping, and spider but I see you have custom piping on your truck. I understand the super duty piping is too short but not sure what to do. Any info would be helpful. Thank you for the informative videos!
The silver truck has a T4 setup. I've heard of guys using the 99 SD Piping, but I never have tried myself. The Lawn Ranger project will be getting a Banks intercooler kit, so that will be covered, but not really what you're looking for. I always had pipes made for the truck, instead of trying to fit other truck intercooler piping in. Its been so long, that I forget who still makes piping for these. Ill have to do some research on that and try to get something going on that.
I believe the fitting at the master cylinder port is a residual valve, not a proportioning valve.
It’s easier to call it a proportioning valve. Just because that’s what everyone knows it as. Lol.
Is there anyway that you know of to use a 2005 hydro boost on a obs? i have a brand new on that was on my parts truck from my 05+ swap and was wondering if i could somehow use that. i am still trying to find one for an f-superduty. most of my parts stores are r&r only to get one and i dont have an old one to have it rebuilt. any insight would be appreciated. Thanks for the helpful videos as well. love the content!!
I’ve never tried. However I’ve seen where guys did use them. I don’t remember what they did though. I’ll see if I can find it again.
I’m glad you’re enjoying the videos! Thanks for watching!
Can you go over the van power steering pump upgrade little more , looking to do one on my truck I know the braket is bolt in , and the pump what is the better pump to use and what ps lines did you use or did you custom make them thanks
I can do a video for that here in the near future for you.
i was wondering if you could supply a list of all the parts and hoses needed to do the swap i have a 94 f350 xlt 7.3 dually with real drum breaks and my whole break system just went out and was planning on doing the hydro break swap any more tips and pointers would be wonderful and greatly appreciated
There are part numbers for the lines in the video, at least the part numbers that were available when I made the video.
You'd need:
Brake Booster (used only) From an 87-97 F-Superduty
Brake Pedal (used only) from 92-97 F-Superduty, manual or auto, depends on your truck
Master Cylinder (New is suggested, not reman) for a 92-97 F-Superduty
Pressure line from booster to box
Pressure line from pump to booster
3/8" Rubber Return line from Booster to pump.
All of the lines can be sourced from Rock auto, or a local parts supplier. It depends on what you want to spend really.
so what are the actual measurements just to clarify u state the f-superduty only automatic pedal works on the manual but not the vaccum yet my truck is manual and has the vaccum booster interested in swapping to hydraulic can't find the actual measurements other than the repetitive statement of moving the pin 3/4th or 7/8th of an inch is it only the automatic pedal that would need the mod
The manual pedal would require the same modification. I only have automatic pedals to compare. I should have mentioned in the video that the manual would need the same modification. 7/8" difference between Vacuum and Hydraulic pedals.
Where do you suggest purchasing a new fsuperduty hydro boost and master cylinder assembly? I’ve been having a hard time finding them
Ford no longer produces them new, so you have to buy a reman booster. But, I suggest buying a used one before buying a reman one. You'll need it for a core, and you'll more than likely have to transfer stuff off of the original booster to the reman unit.
As for the master, I suggest buying a NEW master, of any brand of your choice. Make sure it comes with the little brass fitting on the master though if you're running rear disk brakes, because you'll need that.
Do you then delete the vacuum pump and just add an idler pulley and the electric vacuum pump for the HVAC system, or do you keep the mechanical pump?
I removed the mechanical pump on the pickups in favor of the 99+ SD electric pump and got a shorter belt to make up the difference. There are a few options for belts depending on what year and what belt tensioner your truck has.
What are the, if any, benefits of doing the van power steering remote reservoir mod? Is it just to get the reservoir off the engine? Does it get in the way of something?
The pump itself is better. It also makes it easier to fill the power steering if you’ve got an intercooler.
Thanks for sharing the part numbers for the hoses. I see the super duty electric vacuum pump. Do you have a part number for the belt that you used to delete the mechanical pump? Thanks
You’re welcome! I have the number on the computer at home. I’m away from home for a few days, so if you don’t see me post a number, please comment again. Are you running the original OBS water pump pulley?
@@GarrettsOBSGarage I do have the original water pump pulley now but need a different one. I have a fluid damper. I have a v10 pulley that might fit.
Use the 99-03 SD 7.3 pulley. It’ll clear the dampener. Then use NAPA 25-081102. As long as you have the longer tensioner arm and not the shorter tensioner arm.
@@GarrettsOBSGarage awesome thanks I have a long tensioner and a couple super duty engines. Definitely appreciate the info! Keep up the videos! You're killing it. Great job!
You’re welcome! And Thank you! I’m trying to do this right! Haha
I upgraded to this same hydroboost and I did not swap out the proportioning valve. It has been working fine for me with drum brakes in the rear. Is there any downside to not having the correct proportioning valve?
The drum valve keeps a little pressure on the shoes. When you run the disc one. You may find you have to push the pedal twice to pump the shoes back up before they grab like they should.
Can you give more info on the electric vacuum pump set up you have on that gray truck , looks like you deleted your vacuum pump, mechanical one
It’s really very simple to hook up. It’s a 99+ F-Series vacuum pump. Wired into ignition power and plumbed into the vacuum system. I can likely do a video on it.
I’m doing the conversion right now. I welded my pin on the break pedal 1” center to center higher. Will this be okay?
The 1/8” isn’t going to matter much. You should be okay. It may make your pedal “higher” though.
I've done the HB conversation but not fond of the brake pedal height. I've driven F-Superduty trucks and never recalled the pedal being that high.
By any chance would you know the distance between the firewall mounting plate to the center of the rod? I wonder if there is any difference the HB unit and vacuum booster.
Your username looks extremely familiar to me. Did you do this conversion years ago and post it on a forum?
I can measure the distance from the flange to the eyelet this coming weekend for you.
Same user name on TDS, PSN, PSA, FT. Yes, did a lot of posts on the forums 🛻. Been in the game for a long time.
@@gnxtc2 I used your informational years ago when I did my first swap
👍 Nice
The master cylinder on my 1994 f250 460 is a 1 1/8th bore
They can be different sizes, depending on if someone changed it or not or options. However the F-Superduty one is bigger than them all.
Do you have the part number for master cylinder? Oreily cannot find the correct master cylinder
Garret would you make a video on the e350 pump mod
The one that uses the van power steering setup on the truck? I can probably do that a little later. I’ll be tearing into my other truck.
its that hydroboost of an 1999-2003 superduty? or its the 1 of old obs SD?
F-Superduty from 88-97
Garret, I am planning to run the same setup as your silver truck. Do you have a video on that swap?
Which swap are you talking about? The power steering setup?
@@GarrettsOBSGarage yes which belt did you go with to eliminate the vacuum pump? My hydro master came from an FSuper duty and my bracket and pump from a 7.3 van so I want to set it up similarly. How did you mount the remote reservoir to the idm?
I was planning on making a video covering that swap. The issue at hand is, the truck I was going to do it on is in limbo at the moment due to factors out of my control.
I used a 110.2" long belt, and re-routed the belt differently than original.
The reservoir is mounted to the cabs fender mounting horn. I modified the original bracket for the van reservoir, and rubber isolated it. The fitment is TIGHT because of the hood hinge, so be aware of that.
I used the F-SD Lines, but massaged them to reach a little farther since the pump output port is in a different spot.
I forgot to add, I am running the SD (99-03) 7.3 water pump pulley on that truck.
Can I remove the vacuum pump and find a smaller belt? Or do I need to keep that pully on it.
Yes, you can run a shorter belt without the vacuum pump. If you have the longer tensioner assembly, you can run a NAPA 25-081124. I had bad luck finding a belt that used the very short tensioner assembly.
Thanks, also how is your electric vacuum pump wired up? Does it run continuously?
You’re welcome. I have my vacuum pump wired to an ignition source with a relay. It’s self regulated. So, it runs until it produces the amount of desired vacuum and shuts off. It’s an OEM unit for a 99+ Diesel Ford Truck.
Thanks Mr. Garrett. This helps a lot
Glad I could help!! You’re very welcome.
The pedal doesn’t have to be changed or modified to work. Once the system is completely full of fluid and all brakes are bled it works and feels exactly the same. I’ve done it both ways and you can’t feel any difference.
Everyone has their own opinion on this, and when I swapped my F250 to hydroboost using the vacuum pedal. I didn’t really notice the change until I got into my F-Superduty that has the hydroboost factory installed. It was at that point I noticed the difference in pedal height and feel on the brake pedal. While the pedal isn’t a must have item because you can use the vacuum pedal , it is different for a reason, so I always recommend using the correct pedal.
To my understanding when upgrading a bronco to hydroboost. A f350 drum brake cylinders can be swapped into a 8.8 drum. Is this true?
I’ve never swapped anything dealing with the drum brakes. So I can’t really say one way or another will work there. I’d say you’d be okay running the hydroboost, using the bronco prop valve without other modifications.
@@GarrettsOBSGarage Thanks for the reply. I'm off to the wrecking yard tomorrow. My bronco is a 1990. Should I be looking for a 87-91 f350/450 hydroboost, master cylinder, and brake pedal assembly?
@@TropicBreezeRealty yes. You want to get 87-91 for the pedal assembly. You can use 87-97 for the booster and master though. It will only be on a F-Superduty.
@@GarrettsOBSGarage You the Man. Thank you
@@TropicBreezeRealty you’re very welcome!
not sure its an upgrade i ran 7.3's with the old booster for 25 years and never replaced one now in a 6.0 super duty for 1 year an
I have a 1985 F350 will this work on my truck?
I am not sure, I don't know how similar the firewalls are from 80-86 to 87-91. I do know the firewall fix plate is for the 83-91 years, so its very possible that the 88-91 F-Superduty setup could work for you. I don't have either of those year range cabs here to look at and tell you yes or no. But its possible.
Do you have a full parts list for this swap?
There can be discrepancies in which parts you need based on what steering box you use. The 1997 model year has a change in the box which requires a change in the line.
However, without part numbers. You need:
Hydro Booster
Master cylinder with valve
Pressure line from pump to booster
Pressure line from booster to pump
3/8” T for the return hose if not using the F-SD pump
4’ of 3/8” power steering line.
4 of the 3/8” hose clamps
That’s the description of what you’d need for buying. You’re better off buying a used setup and then using the stuff as cores or using it as is if it’s good. The booster is a reman only to buy now, and they don’t include all the stuff you need, so you’ll have to remove stuff from the “original” booster and install on the reman.
Plus the pedal or modify your pedal.
When looking for the Hydro booster will any year work?@@GarrettsOBSGarage
Sorry for the delay. UA-cam doesn’t always show me the comments. Yes. Any year booster works, 88-97. Just the pedals are year range specific.
do u install electric vacum pump also ? the one from sd?
Yes, I put one in from a 99+ F-series 7.3/6.0.
any video on intallation of sd vacuum?@@GarrettsOBSGarage
@@agustinvilleda7961 it’s on the list of things to do for sure.
@@GarrettsOBSGarage did you add power steering cooler?
also any videos on electric vacuum system?
the trucks all have a factory cooler. It’s just not a finned one. That’s what the long looped line is on the crossmember.
As for the electric vacuum pump, I don’t have a video for it yet as I haven’t had to install it in a truck recently. It’s a fairly simple install however with not much needing done to integrate it.
What intake pipe is that?
The silver truck has an Irate T4 kit on it. It’s the intake supplied by them.
What year trucks have the brake pedal needed?
88-91 for that era and 92-97 for that era. Can’t mix and match from one generation to the other. I’ve never tried to disassemble the assemblies and swap the pedal in the brackets though.
@@GarrettsOBSGarage my truck is 94
Then you need one from a 92-97 F-Superduty. With whichever style transmission you’re using. Automatic or Manual.
Or modify yours like I said in the video.
@@GarrettsOBSGarage thanks
What truck is the pedal out of? Year?
88-91. Or 92-97. Depending on your needs. I have a video covering the pedal as well.
@@GarrettsOBSGarage I have a 1997 crew cab 7.3 4x4
@@malachinewton2510 then you need 92-97 F-Superduty. Or modify yours.
Soo Im looking to do this swap for my 96 Bronco. You know which truck I should pull from? Can I utilize a Mustang hydrobooster?
You'll need a hydroboost setup from an 88-97 Ford F-Superduty for it to be direct bolt in. The mustang hydroboost is setup at a strange angle if I remember correctly. I've heard of guys using other model boosters, but I've never seen them personally. However, you'd need a pedal assembly from a 92-96, because the 88-91 pedal wont bolt up to your firewall.