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Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 4,184
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Quote:
Your choice is between DOT-approved (using technology appropriate only for rubber hoses, because that's what the law was written to regulate) or non-DOT approved - which may be good hoses using appropriate technology - or not, because they're not going through any approval process and aren't approved for street use in any case. Some of the import tuner folks have reported some non-DOT hoses blowing off the fittings at the first stop sign. Nice. Add to this the impossibility of inspecting a hose protected by stainless braid (doesn't matter much on a track car where they are replaced regularly anyway), and their propensity for eating through anything they touch - and then ask yourself "what problem was I trying to solve, again?" Just my $0.02.
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'77 S with '78 930 power and a few other things. |
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05-24-2009, 03:52 PM
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Automotive Monomaniac
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I'd use quality DOT-approved rubber lines, and change them every set number of years. - Mike
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2018 - Porsche 911 Carrera 7MT / 2018 - Porsche Macan 7DCT / 1993 - Cadillac Allante / 2023 - RAM TRX (on order) |
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05-24-2009, 04:39 PM
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Join Date: Feb 2005
Location: California
Posts: 724
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I got my stuck pistons out with a hand operated grease gun. The grease gun
thread was an exact match for the brake line input to the caliper. With the grease they don't so much fly out as just slide out. It is messy but will force out even the most stubborn piston. andy |
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05-24-2009, 11:59 PM
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No big deal splitting calipers as long as you buy new seals as well. Did mine about 3 months ago with no issues...
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Davy 82 911 SC Targa Sold 12 Audi A5 Sportback 3.0 TDI Quattro 03 996 C4S |
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05-25-2009, 04:14 AM
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When I did the fronts, 2 yrs ago, then the rears just last month I bought the hard lines as well since they were seized and I bent them from trying to remove from caliper .
I had SS on the front already fro the PO but just opted for standard OEM rubber from Pelican for the rears. With the soft, hard lines, piston seals and fluid your brakes should be good for many miles to come. Unless youi track it of course then you'll have to do it more often. good luck
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$35 and a six pack to my name..... '88 Diamond Blue Carrera CE 3.4-SOLD 
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05-25-2009, 05:43 AM
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Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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If you are not using the car on the track, no reason to go to stainless flex lines. Arguably these lines hold their diameter a bit better than rubber: they are a teflon tube surrounded by the stainless braid. This could matter on a race car where you are at max braking a lot, put a lot more heat into everything, etc.
On the street it is hard to see how this would matter. Only a madman would stress his car like that in traffic. Old rubber hoses can break down some, either bulging, or developing a flap which acts as a one way valve - and either direction is bad. On the other hand, the stainless lines I have on my SC went on in the late '80s, and still are fine. There are stainless lines out there which assert that they are DOT approved. Looks like the effort was put into the fittings on the ends of the lines, to make it less likely the teflon tube will get crimped/kinked if bent sharply there. I haven't looked at prices in a while, but aren't the rubber lines less expensive? Walt Fricke |
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05-25-2009, 07:24 PM
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Misty
Porsche
