Monobloc calipers are made from a single piece of billet, cast, or forged material. In regards to fixed calipers, there are also monobloc and two-piece calipers. The pistons toward the leading edge of the pad will be smaller than the ones at the back edge of the pad. This "piston differential" helps push the pad flat against the rotor and keeps the pad from wearing faster on the leading edge. Many fixed calipers have different sized pistons incorporated into the design. Being worried that your brakes will fail you when needed will cause you to brake early and generally not push your car, resulting in slower laps. There's also a certain amount of confidence imbued to the driver when he knows he can depend on his brakes to do their thing lap after lap. Having the right binders will also save your bacon when things go wonky, on the street as well as the track. Carrying your speed longer will result in faster lap times and can often be the edge you need over cars that have more horsepower. Having higher performance brakes will allow you to drive deeper into the corners before having to brake. A disc brake system is just what the name implies there's a disc (rotor) that spins with the wheel and a clamping device (caliper) that grabs the rotor creating friction which slows the car (hopefully). Another often overlooked way for a car to get around the track faster is to have the right disc braking system. Having a higher power-to-weight ratio will make your car faster since less weight has to overcome inertia. I'm not saying that I would do the conversion, because it's a major pain in the ***, but, the idea does hold quite an appeal for me every time I'm on my back under my cars, doing something that involves the rear brakes, or differential.How can one be faster without adding more ponies to the engine? One way is to make your car lighter. Compared to cars with outboard brakes, it just looks like something is missing. However, unsprung weight on the rear axle of a car in this weight range is really inconsequential, especially when you consider that 99% of XJS owners never drive their cars anywhere near their handling limits.Īside from that, the car looks downright odd when you put wheels on it that have a very open spoke pattern, allowing a clear view of everything inboard of the wheel. Unsprung weight on the front axle is crucial because of it's affect on steering response and handling. Outboard brakes likely run much cooler than inboard brakes, and they are definitely easier to run ductwork to, should your driving style require the additional cooling.Īlthough downplayed, it has already been mentioned that outboards are infinitely easier to service. There is also greater leeway for using larger, vented rotors and better, multi-piston calipers with outboard brakes.assuming that you also plan to run a larger diameter rim. It's a cure for which there is no disease.Well, there IS that little theory of the heat generated by the inboard brakes being responsible for causing the axle seals on the diff to fail at a higher rate (although the culprit is just as likely to be the exhaust pipes routed through the cage in that same area, if not a combination of the two). Lumps ain't done for economy, although MPG is usually better. O'wise, it doesn't leak or make noise and ahs a reconditioned set of calipers. Were I to inherit an OB disc IRS in top shape and mine needed a lot of work, I'd swap. More like spaniel under pinnings with a German Shepherd topside. she laughed, "that's a good one".Ĭoco does look like an Australian Shepherd, but only sort of. She, "Thank you, he is an Australian Shepherd, what kind is yours?" Me "Dog". I complimented them on the cute little dog. Jeep,Jaguar not completely ready for the road. Differential of Saginaw of Dana origin, and the list goes on!!!Ĭoco and I went to market yesterday. Lucas electrics, GM Ac compressor and power steering. But, once in top shape, the inboards should not need At the end of a lever, it is magnified.Įasier to service. Yes, the idea was to reduce unspring weight.
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