brake booster unnessacary?

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tattooinfiat

brake booster unnessacary?

Post by tattooinfiat »

ive heard thats the brake booster is unnessacary..true false? pros cons? mine is ugly and it really would clean up engine compartment..any thoutghts would be greatly appreciated...
bobplyler
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Your car is a: 1979 spider 2000
Location: Charlotte, NC

Re: brake booster unnessacary?

Post by bobplyler »

I had my booster go out once. It was very difficult to stop. I don't know what would happen if you intentionally remove it.
1979 Fiat Spider (since new)
2005 Lincoln LS (the wife's car)
2003 Chevrolet Cavalier (daily driver)
1999 Honda Shadow VLX 600
1972 Grumman Traveller 5895L (long gone).
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124ADDHE
Posts: 365
Joined: Tue Oct 19, 2010 11:19 pm
Your car is a: 1974 Spider Amalgamation with C40 Solex
Location: Salmon Arm, BC, Canada

Re: brake booster unnessacary?

Post by 124ADDHE »

Its just fine, lock's em up with no problem. I did get the EBC Yellowstuff pads for my car and they really make her grip harder than the cheap pads that were in the car when I bought it.
Regards,
Keith Cox
1973 124 Spider
1973 John Deere 500c backhoe
1987 Jaguar VDP
2013 passat tdi
2015 cherokee
tattooinfiat

Re: brake booster unnessacary?

Post by tattooinfiat »

your sayin its fine to take it out then?
baltobernie
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Your car is a: 1973 Spider [sold]
Location: Baltimore, MD

Re: brake booster unnessacary?

Post by baltobernie »

"Opinions vary". Braking force increases significantly. I've done a very crude measurement; looks like about 70-90lbs. Put a bathroom scale against the wall (on a stud!) and see for yourself
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124ADDHE
Posts: 365
Joined: Tue Oct 19, 2010 11:19 pm
Your car is a: 1974 Spider Amalgamation with C40 Solex
Location: Salmon Arm, BC, Canada

Re: brake booster unnessacary?

Post by 124ADDHE »

Yes, I said it is ok to remove it. Maybe if you have a bad knee or something its not a great idea, my very petite wife can lock the wheels up, you just have to be ready for it. You get great feedback without the booster and you can run the sidedraught carbs if you can find a manifold :)
Regards,
Keith Cox
1973 124 Spider
1973 John Deere 500c backhoe
1987 Jaguar VDP
2013 passat tdi
2015 cherokee
tattooinfiat

Re: brake booster unnessacary?

Post by tattooinfiat »

haha knees are ok..if i remove it do i need to reroute any mc or lines what have you?
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spidernut
Posts: 1906
Joined: Wed Jan 25, 2006 12:20 am
Your car is a: 1979 Fiat Spider Automatic
Location: Lincoln, CA

Re: brake booster unnessacary?

Post by spidernut »

Remove the vaccuum line to your brake booster (which eliminates the boost) and go for a drive. It is not fun.

I was in a Jeep once that lost the booster. With both feet on the brake pedal, I still couldn't stop it. That's not normal, but it does take a lot of effort and gets old quickly in traffic or after a long day.
John G.
1979 Spider (Owned since 2000)
1971 124 Sport Spider (Owned since 2017)
1977 Spider (Sold 2017)
1979 Spider (Disposed of in 2017)
1979 Spider (Sold 2015)
1980 Spider (Sold in 2013)
1981 Spider (Sold in 1985)
2017 Spider (Owned since 2019)
tattooinfiat

Re: brake booster unnessacary?

Post by tattooinfiat »

yea tried that didnt enjoy it much..it wasnt terrible but i liked it better with the booster..im jus trying to do something to clean up left side of engine compartment..on the right side all i have is a small over flow tank and a coil thats it.on the left brake boostrer..gobs of wires tubes and hoses..the charcoal canister(not sure if that is nessacry either) fuel filter and mechanical fuel pump..so on and so on..any suggestions on cleanin it up i see these pics of motors on here and they look clean and simple..mine looks like a teenagers messy room..haha if he were into fiats
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124ADDHE
Posts: 365
Joined: Tue Oct 19, 2010 11:19 pm
Your car is a: 1974 Spider Amalgamation with C40 Solex
Location: Salmon Arm, BC, Canada

Re: brake booster unnessacary?

Post by 124ADDHE »

Removing the vaccuum line from the booster did not accurately estimate the force to brake withthe booster actually removed, its a bit easier with the booster gone..,maybe my booster was on the outs though, i dont know how they work and have never had it apart so maybe its not a perfect case study, just in my case?

Yes, the lines can just be carefully bent to meet the master's new location, close to the firewall.
Regards,
Keith Cox
1973 124 Spider
1973 John Deere 500c backhoe
1987 Jaguar VDP
2013 passat tdi
2015 cherokee
Ken

Re: brake booster unnessacary?

Post by Ken »

This article is from the Master Power Brakes website, even though it is for American cars the principle is the same, disk brakes need about twice the force to stop compared to drum. The Fiat master cylinder has a small bore, I think smaller than 7/8 inch, the pressure ratings on the chart is from GM type master cylinder with 1 inch or 1 1/8 inch bore. I cleaned up my engine compartment by using a chrome 7 ½ double diaphragm booster with and chrome master cylinder with built in reservoir and 1 inch bore, the mount holes needed to be altered but not much.
http://www.mpbrakes.com/uploads/documen ... ooster.pdf
If you want to test your system without the booster just disconnect and plug off your vacuum line.
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