Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

FAG Brake Master Cylinder


Inka’d02

Recommended Posts

So I purchased a tii master cylinder on ebay. I'm upgrading from a stock master due to a Volvo BBK. It was suppose to be an ATE but an FAG showed up in a generic box. The part number on the side of the cylinder is S5339 9A2. Its about .150" bigger in diameter.Can anyone confirm this one is correct before I spend the time installing it?

Thanks,

Andrew

Link to comment
Share on other sites

Have you tried the Volvo BBK with the original MC? It should work just fine.

The larger MC will require more pedal force.

No amount of skill or education will ever replace dumb luck
1971 2002 (much modified rocket),  1987 635CSI (beauty),  

2000 323i,  1996 Silverado Pickup (very useful)

Too many cars.

Link to comment
Share on other sites

I don't know about your P.N. According to the manual (blue book), the diameter of the regular MC is 20.64 mm (.8125"). The diameter of the TI and tii is 23.81 mm (.937"). The difference is 3.17 mm or .125".

I have the same brake conversion you have and the pedal is firm, with possibly a bit more travel. You might try bleeding the system once more. Good luck.

No amount of skill or education will ever replace dumb luck
1971 2002 (much modified rocket),  1987 635CSI (beauty),  

2000 323i,  1996 Silverado Pickup (very useful)

Too many cars.

Link to comment
Share on other sites

I wouldn't rely on that measurement. BMW used several suppliers for the same cyls. The only way to confirm (unless someone can verify your casting numbers) is to measure the bore diameter. If memory serves, you can see the end of the bore if you peel back the rubber bellows on pedal end. Use vernier calipers.

Link to comment
Share on other sites

measured where?

The bore diameter, of course.

No amount of skill or education will ever replace dumb luck
1971 2002 (much modified rocket),  1987 635CSI (beauty),  

2000 323i,  1996 Silverado Pickup (very useful)

Too many cars.

Link to comment
Share on other sites

Don't sweat it. FAG makes good parts, and I've run Volvo calipers on

all of our cars with the stock master- it's not particularly spongy.

And the bore's the only thing that matters- the OD will vary between manufactures.

In fact, some may make the OD intentionally big to be able to bore different

sized parts out of the same casting. Thus, don't count on casting

numbers to tell you everything, either.

hth

t

"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

×
×
  • Create New...