'49 F4 disc brake conversion update

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Nov 26, 2016 | 02:17 PM

49fordv8f4

Thread Starter

Cargo Master

Joined: Aug 2014

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From: North Central Arkansas

'49 F4 disc brake conversion update

I temporarily added a vacuum reservoir to my truck from a '71 F600 U-Haul truck that I parted out. I was concerned that the factory vacuum pump on the Mercedes diesel wasn't large enough to do the job. When I checked it a couple of months ago, I had about 8" of vacuum at an idle and maybe 15" max at higher RPM. Today I found a line fitting on the pump that I hadn't tightened. Now at an idle it will take the reservoir and vacuum system from 0" to 22" in about 45 seconds. I took the truck for a test drive and the brakes are very good. It will lock up all the wheels and slide to a straight stop on pavement. I am very pleased with the brakes.
Thanks, Mark

Nov 26, 2016 | 03:38 PM

Scotty's 52 F3

Cargo Master

Joined: Aug 2015

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From: Marana, Arizona

Thanks for the update. You did an awesome job on that conversion.

Nov 27, 2016 | 03:32 PM

49fordv8f4

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Cargo Master

Joined: Aug 2014

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From: North Central Arkansas

Thank you Scott, I appreciate the compliments.
Mark

Nov 27, 2016 | 11:24 PM

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

Posts: 27,294

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From: NM

Good catch, and congrats on the conversion, that was quite a project in itself!

Nov 28, 2016 | 11:43 AM

49fordv8f4

Thread Starter

Cargo Master

Joined: Aug 2014

Posts: 2,594

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From: North Central Arkansas

Thanks, Ross. I really appreciate all the help and encouragement I have received on this forum. I should have caught the loose fitting sooner, as everything on the car that I took the engine out of, operates by vacuum and it always worked flawlessly.
Mark