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#565106 03/06/03 08:29 PM
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A friend of mine, Dan Demetroff, who runs a Cougar in the Speed World Challenge Touring Car Series (thats the one w/ the Acura Integra's and BMW 3 series) was telling me this weekend that on his svt tour he runs Lincoln LS Calipers. He says he ran them on he Cougar for one season b4 going to wilwood outlaw 4 pot calipers. He says that you can stand the car on its nose w/ these breaks. I made a previous post about the Jaguar calipers, but was wrong, it was the Lincoln LS. Anyway I am in the process of buying 2 front lincoln ls calipers off of a 99 of 00. If it works, I'll let you guys know, they are supposed to be a direct bolt on. We'll find out.


modded 99 SVT for sale. PM me or Email me at zapparacing@aol.com
#565107 03/06/03 09:15 PM
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COOL I WILL DO THIS MOD TOO IF IT WORKS. ALSO DOES THIS MEAN BIGGER ROTORS?


2004 silver srt-4 with some mods(FOR SALE) ;-) 1998 t-red CSVT stock and beat up :-( 1997 z24 cavalier with some mods(FOR SALE) :-? old ride- 98 Silver CSVT with some mods ;-)
#565108 03/06/03 09:17 PM
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Let us all know how it goes!


2000 SVT Turbo 295hp/269ftlb@12psi #1 for Bendix Brakes Kits! Knuckles rebuilt w/new bearings $55 AUSSIE ENDLINKS $70 Gutted pre-cats $80/set A lack of planning on your part does not constitute an emergency on mine!
#565109 03/06/03 11:26 PM
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A caliper change by itself won't totally transform the braking of the car so don't expect miracles.


Pacific Green '96 Contour LX V6 â??98 GTP, light mods, 14.66/94 Calypso Green '92 Mustang LX coupe, 13.56/101 Crown Autocross Club 1999 Street Tire Champion, 2000/2001/2002 Street Modified Champion KCR SCCA 2002 Solo II Street Modified Champion
#565110 03/06/03 11:42 PM
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Originally posted by MFE:
A caliper change by itself won't totally transform the braking of the car so don't expect miracles.



Still, I feel the calipers make the most significant difference in pedal feel and brake modulation, as long as they're teamed with worthy lines and some good fluid. Don't you think so?

Granted, effectiveness is mostly governed by the pads.

#565111 03/07/03 12:47 AM
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IMHO the change in caliper will have a marginal effect on braking ability compared to pads and especially rotor sizing.


Pacific Green '96 Contour LX V6 â??98 GTP, light mods, 14.66/94 Calypso Green '92 Mustang LX coupe, 13.56/101 Crown Autocross Club 1999 Street Tire Champion, 2000/2001/2002 Street Modified Champion KCR SCCA 2002 Solo II Street Modified Champion
#565112 03/07/03 03:26 AM
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MFE is right. The change of the caliper won't have significant effect on the brake torque. If it has larger pistons the pedal will travel more and it will make more clamp load. But as the equation goes; to increase torque you need either more piston area, larger rotors or grippier pads. The pistons may in fact clamp more but the feel will not likely be a short, firm pedal at the touch of the foot if that's what you are expecting.


Less Bling, more Zing Todd/TCE www.tceperformanceproducts.com
#565113 03/07/03 07:12 AM
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Originally posted by Pascal:

Still, I feel the calipers make the most significant difference in pedal feel and brake modulation, as long as they're teamed with worthy lines and some good fluid. Don't you think so?

Granted, effectiveness is mostly governed by the pads.




Completely wrong. Pedal feel is largely governed by the brake booster and master cylinder and pedal ratio. Of course, that is hardly anything you guys normally mess with.


Balance is the Key. rarasvt@comcast.net
#565114 03/07/03 07:58 PM
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Originally posted by Rara:
Completely wrong. Pedal feel is largely governed by the brake booster and master cylinder and pedal ratio. Of course, that is hardly anything you guys normally mess with.




Then why did I get great improvements in pedal feel every time I changed calipers and lines on a car? I mean, I'm on my 3rd car with an aftermarket brake kit here, I know I'm not crazy... What am I not getting?

Todd: I'm not talking about performance, just subjective feel. I understand how calipers don't really affect brake torque given a fixed rotor size and fixed caliper material.

#565115 03/09/03 07:57 PM
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Lines can "improve" pedal feel if the stiffness of the original lines and the new lines are significantly different (most often rubber to stainless in an aftermarket context)

As far as the calipers go, yeah, pedal feel will change some if there is a significant change in caliper piston size or # of pistons. This is mostly due to the fact that if you have increased the effective piston area, you now have to displace more fluid with the same master cylinder, which means a longer stroke at the pedal. Usually when you step to new calipers, you are going to larger rotors and more agressive pads as well, these both change the amount of brake torque for a given brake pressure in the system, which will also change what you percieve to be pedal feel.

As odd as this sounds, you really haven't changed the actual pedal feel, only changed what it is acting on (the calipers) and you end in a different area of the original actuation force curve (pedal/booster combined)
It would make a whole lot more sense if you ever had an oppurtunity to mess around with pedal ratios, booster tuning, and master cylinder size in the same vehicle.

So because the master cylinder sizing is important relative to caliper piston sizing (because of hydraulic advantage) when you change the calipers, it will feel a little different, but now it is because you essentially have made the master cylinder sub-optimal for the system. Sort of like putting the cart before the horse.


Balance is the Key. rarasvt@comcast.net
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