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Thread: C350 Hydroboost Conversion

  1. #21
    Gear Head Sucked In Bronco Biff's Avatar
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    Default Re: C350 Hydroboost Conversion

    AWWWWWYEAHHHH!!! We have some brakes now!! Got everything on today and the brakes work very well. Kept my original pedal assembly...........

    Me "But Honey, it seats nine!"
    Honey "No way! Have you lost your mind?! Five kids is plenty!"

  2. #22
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    Default Re: C350 Hydroboost Conversion

    Very cool. Can't wait to hear more after you tow and get some miles on it.

  3. #23
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    Default Re: C350 Hydroboost Conversion

    we need pix !!

  4. #24
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    Default Re: C350 Hydroboost Conversion

    Name:  boostain.jpg
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Size:  93.0 KBHopefully pulling the Bronco Hauler and '73 down to Uwharrie on the 21st to do some trail maintenance with the Carolina Bronco Folks. Either that or double redeye like last year and pull the 20ft lowboy. But on to some pickchas!!

    The lines worked perfect using the early '97 version. I bought the dual return pump from Rock Auto with built in "magnafine" filter. I was hitting up advance auto for the remaining stuff I needed like power steering fluid ($12.66/gal) worm gear hose clamps, and 3/8" hose and ran across a hose kit for mounting a remote transmission cooler that came with 4.5 ft of hose suitable for hydraulic fluid, high pressure and capable of being bent to a 3 inch radius for about $4.

    Me "But Honey, it seats nine!"
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  5. #25
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    Default Re: C350 Hydroboost Conversion

    Brakes work well, but pump is noisy!! It seems to be running out of balance also. If I run the RPMs up to about 1500 there is a noticeable vibration that was not there before. Plan take a better look this evening. I used the pulley off of the original pump and removed and reinstalled with the proper tool. Might have to follow up with Rock Auto.

    Me "But Honey, it seats nine!"
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  6. #26
    Senior Member Sucked In sheepman's Avatar
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    Default Re: C350 Hydroboost Conversion

    Iirc the pump pulleys are only good for two removals. They need replacement after that. I think I remember reading that on a slip of paper that came with a motorcraft pump I got from the dealership a few years ago.
    1997 F350 Centurion Pacifica
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  7. #27
    Senior Member Sucked In BigOldBlueC350's Avatar
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    Default Re: C350 Hydroboost Conversion

    noisy w. a vibration .... sent it back rockauto !!
    I had the same problem w. the pump I got from them !

  8. #28
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    Default Re: C350 Hydroboost Conversion

    Quote Originally Posted by sheepman View Post
    Iirc the pump pulleys are only good for two removals. They need replacement after that. I think I remember reading that on a slip of paper that came with a motorcraft pump I got from the dealership a few years ago.
    pretty sure that was the one pushed on at the factory.

    Me "But Honey, it seats nine!"
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  9. #29
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    Default Re: C350 Hydroboost Conversion

    You got a bad one too, Franko? I was thinking of putting my old pump back on!! Wasn't going to change it and just reseal the reservoir but it looked like it was leaking a little out of the shaft seal and wanted dual returns.

    Me "But Honey, it seats nine!"
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  10. #30
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    Default Re: C350 Hydroboost Conversion

    I've been missing out on this thread (???) Anyway, the two Ford pumps are identical except for the different housing with the second nipple. If your original pump was satisfactory, just replace the housing/tank with the two-nipple connection type. E8TC-3A578-AA. I have a brand new one here I'll sell for $20 + shipping. However, there's a reason I have this thing, and it's because the Ford pump isn't very good to start with plus it doesn't operate with enough pressure to properly operate the Hydro-Boost. The pumps used by Ford in new production were suitable for HB use, but they all get rebuilt the same way and you can't find a new HB Ford pump even at the dealership. Secondly, they don't seem to deliver enough flow at peak demand either. All these things are solved by going to the Saginaw PS pump like was used on the E series vans. The HB works better AND the steering just feels so much more consistent regardless of what else is going on. My own recommendation would be to use the stock Ford pump with a Tee in the return line in order to get things working, and then upgrade to a NEW Saginaw pump when the opportunity presents itself. Saginaw pumps are available new, in a new housing, with either of two variations on the double return fittings from Amazon for a little over $100. Unlike the "rebuilt" crap (that can cost even more!), these things actually work.

    The hardest part of the Saginaw pump conversion is getting the factory bracket for the Saginaw pump that fits your motor. You will also have to make a custom hose to go between the pump and the HB since none of the E-series vans came with HB and the Sag pump has a 16mm-1.50 o-ring flare fitting.
    Chris

    '86 F-350, 460, 4-speed, 4WD (I love this truck! ), Hydro-Boost, Redhead, Saginaw
    '96 F-350, 460, 5-speed, 4WD, all stock so far

  11. #31
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    Default Re: C350 Hydroboost Conversion

    yeah. considered all that. Got new pump with integral microfine filter and both returns to get thing going with out having to find a Saginaw bracket. steering is fine,
    brakes work fine. original pump was leaking from the shaft seal and the reservoir o-ring and I still would have to find the resivor which was not that easy to source.

    Me "But Honey, it seats nine!"
    Honey "No way! Have you lost your mind?! Five kids is plenty!"

  12. #32
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    Default Re: C350 Hydroboost Conversion

    Pulled my 28ft enclosed trailer with the '73 in it Sunday. Worked very well. Not only did the truck brakes feel much better, the brake light switch works as soon as you put your foot on the pedal which it did not do before because the pedal pressure was so light. Now I can "rest" my foot on the pedal and you can feel the trailer brakes before the truck brakes. Make sense?

    Me "But Honey, it seats nine!"
    Honey "No way! Have you lost your mind?! Five kids is plenty!"

  13. #33
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    Default Re: C350 Hydroboost Conversion

    Yeah, you have the old school pressure activated brake controller.
    I get it, you are outdated. Bwahahahaha

    that is awesome, glad it is working well.

  14. #34
    RedNeck In Montana Sucked In InfoFord's Avatar
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    Default Re: C350 Hydroboost Conversion

    pressure activated brake controllers beat the crap out of G force sensing controllers

    and if all possible get rid of that CII ford pump and go to a Sag pump that CII pump barely handles the duty's of steering without issues let alone any extra load on it

  15. #35
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    Default Re: C350 Hydroboost Conversion

    Name:  hills.jpg
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Size:  170.7 KBCouldn't find a good source for a pressure activated brake controller, Swapped out to a Tekonsha P3 proportional and took out the timed. Made a nice improvement. Pulled the trailer 1200+ miles to Murphy NC and wheeled the new Durham/Tellico with the Carolina Broncos. LOTS of big mountains accents and descents providing all kinds of brake work!! Some of the most intense roads I've pulled. Truck did beyond good. Check out the link if ya want to see some more.

    http://www.cb4x4.com/forums/showthre...ico-Pic-thread

    Me "But Honey, it seats nine!"
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  16. #36
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    Default Re: C350 Hydroboost Conversion

    ...so who has some clues on sources for pressure activated brake controllers???

    Me "But Honey, it seats nine!"
    Honey "No way! Have you lost your mind?! Five kids is plenty!"

  17. #37
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    Default Re: C350 Hydroboost Conversion

    Quote Originally Posted by Bronco Biff View Post
    ...so who has some clues on sources for pressure activated brake controllers???
    I've seen them on old Fords, kind of disappeared in the 80s. had a brake line running to and from................................ new technology isn't always better

  18. #38
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    Default Re: C350 Hydroboost Conversion

    Quote Originally Posted by Bronco Biff View Post
    ...so who has some clues on sources for pressure activated brake controllers???
    Maybe this helps you:
    http://www.brakecontroller.com/MaxBrake.pdf

  19. #39
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    Default Re: C350 Hydroboost Conversion

    That is pretty sweet, thanks. We just got back from another trip to the mountains. Ran into some rush hour rush hour slinky stop and go traffic.Brakes worked very well.

    Me "But Honey, it seats nine!"
    Honey "No way! Have you lost your mind?! Five kids is plenty!"

  20. #40
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    Default Re: C350 Hydroboost Conversion

    deleted spam
    Last edited by InfoFord; 03-13-2019 at 01:23 PM. Reason: spam

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