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Question about brake fluid reservior cap...


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1 hour ago, ray_ said:

I wonder if the float could be filled with appropriate closed cell foam...

Unless the brake fluid attacked foam that somehow turned out to be "inappropriate."

 

I also wondered about enveloping-shrink wrapping/vacuum sealing the float in heavy plastic sheeting, but have no information on said plastic's long-term compatibility with brake fluid.  Another possibility might be to simply fuse/weld some plastic from the brake fluid container using a common heat source.

   

While this issue is particularly minor in the large scheme of things, one wonders about similar concerns with plastic carburetor floats.  The only ones I have ever tried fixing were brass and easily sealed with solder.  With plastic carburetor floats, not only is there the base plastic consideration, but there is the additional reaction possibly caused by ethanol exposure.  In any event, possible brake system contamination might pose a greater risk than fuel contamination at the carburetor and the thought will be tabled for another day.

 

Thanks.

 

 

 

 

Edited by percy
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9 hours ago, percy said:

Unless the brake fluid attacked foam that somehow turned out to be "inappropriate."

 

I also wondered about enveloping-shrink wrapping/vacuum sealing the float in heavy plastic sheeting, but have no information on said plastic's long-term compatibility with brake fluid.  Another possibility might be to simply fuse/weld some plastic from the brake fluid container using a common heat source.

   

While this issue is particularly minor in the large scheme of things, one wonders about similar concerns with plastic carburetor floats.  The only ones I have ever tried fixing were brass and easily sealed with solder.  With plastic carburetor floats, not only is there the base plastic consideration, but there is the additional reaction possibly caused by ethanol exposure.  In any event, possible brake system contamination might pose a greater risk than fuel contamination at the carburetor and the thought will be tabled for another day.

 

Thanks.

 

 

 

 

Lol. The entire carburetor on my parent's Lawn Boy mower was made of plastic. It had to be replaced at least twice during their ownership.  Today's fuel will eat thru rubber hoses that are constantly immersed in fuel.  A gooey mess was extracted from my parent's (!) weed eater.  They finally spent more money on a Honda mower and Stihl trimmer.

Jim Gerock

 

Riviera 69 2002 built 5/30/69 "Oscar"

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3 hours ago, jgerock said:

Lol. The entire carburetor on my parent's Lawn Boy mower was made of plastic. It had to be replaced at least twice during their ownership.  Today's fuel will eat thru rubber hoses that are constantly immersed in fuel.  A gooey mess was extracted from my parent's (!) weed eater.  They finally spent more money on a Honda mower and Stihl trimmer.

 

If available, your folks should try using recreational fuel, commonly referred to as REC 90. 

 

Quote

REC-90 is an ethanol-free, 90 octane unleaded gasoline blend designed for use in recreational/marine engines which can be damaged by the ethanol found in other gasoline blends. It is also usable in some aviation engines and automotive engines, though it has not been thoroughly tested for cars and trucks.

Unlike most stations in the plains states which carry ethanol-free 87 octane unleaded alongside 10% ethanol 87 octane unleaded, many states carry ethanol-free gasoline specifically marketed as recreational fuel designed for marine equipment and small engines.  https://en.wikipedia.org/wiki/REC-90

1280px-Pump_hose_label_Kwik_Trip_Cross_P

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same issue here, float filled with brake fluid. Rubber pin holder disintegrated. 

 

I just bought the e21 replacement, but it stands out like a NEW PART in the engine bay. meh, who cares?

1970 Agave work in progress

Born on May 14 1970 and delivered May 19th 1970 to NYC to Hoffman Motor Corp. Agave code 071

new guy

help appreciated!

other cars: 1991 318is / 1999 540iT

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