Technical BRAKES, 39-48 lincoln brakes----useful numbers

Soooooo' '46 rear Lincoln plates on a 1940 Ford rear end works .... but I guess I can't keep '40 Ford plates and drums on the front ??

Has anyone mix and matched such a setup ? Or does one Lincoln upgrade all 4 corners ? Asking for a friend ....

 

Sooooo' ... the quandry is having polished '40 front plates and then switching to Bendix style Lincoln brakes. Has anyone used the '40 plates WITH Lincoln 1939 innards, and drums ???

I realize fabrication would be in order ....

Or just toss the polished '40 plates ?

Pbbbbbt !!!

 

earlier in the article - Post #18 - there was a reference to converting '40 type backing plates by removing the non-adjustable parts, but no link to the actual how-to.

 

Some of the other Lincoln brake articles suffer from no pictures .... not even the ole' red X. Too many HAMB upgrades ....

 

Does anyone have CURRENT part numbers or what vehicle is can look up parts for? The part numbers for the shoes and wheel cylinders aren't coming up with much for me.

 

Maybe that info will help. Sorry for being lazy. I just didn't feel like retyping it.

 

I'd recommend the H1502 adjuster as I think it's short enough to fit without modifying. Here is a screenshot with some dimensions from my correspondence with Summit.

 

For front wheel cylinders there are tons of options but I'd go bigger than the 1" originals. For fronts you might just have to watch what size the brake hose thread is and maybe change that to match.

I'm partial to Centric brand wheel cylinders from Rock Auto but I'm giving all these as Dorman numbers since that's probably a more common brand and easier to cross at a parts store if necessary.

Remember bigger wheel cylinder bore vs master gives more of a power brake feel with manual brakes. Smaller wheel cylinder bore gives harder pedal/less power feel. Larger fronts relative to rears will give more power to fronts. If a car is more balanced front to back weigh wise you may want the f&r wheel cylinders closer in size. Fronts should always be bigger than rear on a car since weight transfers forward during braking.

As a starting point you'd probably want to use 1.125 bore fronts with either 7/8 or 15/16 rears

With any of these you'd probably want to pair them with either a 7/8 or 1" bore master if you're running manual brakes.

All these are currently available on Rock Auto.

The cheap front option is these.

57 Vette



Or 50 ford car/Mercury



If you want the biggest front wc you can get that will fit Lincoln plates, these fit 41 plates. These will not fit the deep legit 39 plates. They'd fit all the aftermarket "Lincoln" plates though

73 Amc Javelin



On rear lincolns you also have a lot of options. Here are 3 sizes if you're looking for more or less bias.

50 ford wagon



50 Mercury



57 Vette

 

Here is a thread with pics of modifying my Bolling Bro drums to fit 41 lincolns w/ splash ring.

https://www.jalopyjournal.com/forum...se-with-original-1941-lincoln-brakes.1194842/

 

Here are some really old pics of my Buick drum conversion using 46 backing plate converted to use the stock Buick front shoes. The shoes are 2 1/4". I later took the adjuster pawls off as the shoes never wore any. The hardware is mostly from a Caprice wagon. The cylinders are 1 3/16". These pics were taken after 10 years of use. I also ditched the grease shields.
Notice how far the backing plate is in the drum. It is needed to cover the shoes. The shoes show full contact. If you see a conversion where the backing plate is outside the drum, It is not done right.