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> Caliper Weights, Deciding where you want your un/semi-sprung weight
Eric_Shea
post Feb 27 2010, 06:30 PM
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I finally had the time, the proper scale and all of the calipers varieties around to do a little comparison weighing. All calipers are without pins, springs and pads.

And the winners are:

Brembo Calipers = 4lbs. 6oz. (front 911 strut 3" spacing, or early 914 strut w/o caliper spacers, or late 914 strut with ClubHub 48mm pistons, #109 Pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360942664.1.jpg)

S-Calipers = 5lbs. 6oz. (front 911 strut with 3.5" spacing, 48mm pistons #45 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943317.1.jpg)

L-Caliper = 5lbs. 6oz. (rear early 65-68 911 caliper with 2.25" spacing 35mm pistons, #30 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943317.2.jpg)

Wide L-Caliper = 5lbs. 10oz. (rear early 911S 67-68, 38mm pistons, #30 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943318.3.jpg)

911 Rear M-Caliper = 6lbs. 2oz (rear 911 69-83, 38mm pistons, #31 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943318.4.jpg)

914 Rear Caliper = 6lbs. 10oz. (rear 914 All, 33mm pistons, #30 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943319.5.jpg)

914 Front Caliper = 6lbs. 14oz. (front 914 all, 42mm pistons, #31 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943319.6.jpg)

M-Caliper = 7lbs. 6oz. (911 & 914-6 Front, can be used on early 914 w/o spacers, 48mm pistons, #31 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943319.7.jpg)

A-Caliper = 9lbs. 2oz. (911SC all front 3.5" spacing, 48mm pistons, #45 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943320.8.jpg)

Wide A-Caliper = 9lbs. 4oz. (911 Carrera all 3.5" spacing, 48mm pistons, #45 pad)
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.pmbperformance.com-1110-1360943320.9.jpg)
[same picture as above... just has 4mm wider spacers.]

Couple of things to note. The very lightest calipers and the very heaviest calipers share the same 48mm pistons and "almost" the same size pad. The 109 pad is the same pad as the BMW 320i... just as wide as the #45 pad but a couple of mm shorter.

Stands to reason a 3" 911T/914-6 strut with Brembo's is the lightest most effective system in this batch. Looking at the top and the bottom... you could shave almost 10lbs. of un-sprung/semi-sprung weight off your suspension and get the same performance!
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bahnzai
post Apr 18 2022, 04:15 AM
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John,
@wndsrfr
What rotor/hat combo are you using with that caliper?
Thx
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wndsrfr
post Apr 18 2022, 08:29 PM
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QUOTE(bahnzai @ Apr 18 2022, 02:15 AM) *

John,
@wndsrfr
What rotor/hat combo are you using with that caliper?
Thx

Got the hats from Rebel Racing and the rotors are Wilwood 160-0471 and the calipers are 120-11131. See post #20 on this page: http://www.914world.com/bbs2/index.php?sho...&hl=wilwood
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Posts in this topic
Eric_Shea   Caliper Weights   Feb 27 2010, 06:30 PM
ConeDodger   mmmmmmmmm.... Mine are the lightest! Yaaaa...   Feb 27 2010, 06:36 PM
wndsrfr   For the track car I'm using Wilwoods at just u...   Apr 17 2022, 09:04 AM
Chris Hamilton   Those brembos are great. Light weight and cheap...   Feb 27 2010, 08:23 PM
scotty b   Those brembos are great. Light weight and cheap...   Feb 28 2010, 01:18 PM
Chris Hamilton   B)-->
QUOTE(scotty b @ F...   Feb 28 2010, 07:42 PM
andys   Eric, These are the combined weight of two calipe...   Feb 28 2010, 10:50 AM
Eric_Shea   No... that's one caliper. I never have been...   Feb 28 2010, 11:05 AM
DRPHIL914   No... that's one caliper. I never have bee...   Apr 18 2022, 08:18 AM
DaveB   ...but main question is for '75 car currentl...   Apr 23 2022, 01:30 PM
Krieger914   This is great info. Thanks. So I have my A calip...   Feb 28 2010, 12:59 PM
Eric_Shea   Those are Wide A-Calipers. (what's with the ...   Feb 28 2010, 01:00 PM
Krieger914   That's the luck of the $40 swap meet find...   Feb 28 2010, 01:05 PM
Krieger914   So Eric, what is the difference between a 914/4 an...   Feb 28 2010, 01:12 PM
Eric_Shea   Diameter, not thickness. Once you machine the h...   Feb 28 2010, 02:47 PM
kwales   Dang, I'm gonna drill mine full of lightenin...   Feb 28 2010, 04:42 PM
jmill   Damn. I need some S calipers. My A's are boa...   Feb 28 2010, 04:55 PM
sixnotfour   mine look like this PMB style   Feb 28 2010, 07:58 PM
Chris Hamilton   Wow those look nice!   Feb 28 2010, 08:02 PM
ChrisNPDrider   Nice :beer2: Eric - do you stock rebuild Brembos ...   Mar 1 2010, 10:50 AM
ConeDodger   It was almost a shame to cover them up with wheels...   Mar 1 2010, 12:17 PM
campbellcj   Anybody got weights for the Boxster calipers? I ma...   Mar 1 2010, 11:06 PM
Eric_Shea   I usually stock a pair or two of those.   Mar 2 2010, 02:10 AM
burton73   I usually stock a pair or two of those. Hi b...   Apr 13 2022, 08:33 PM
SirAndy   12 years later ... :huh:   Apr 13 2022, 10:06 PM
bahnzai   Just adding another data point here. Not nearly at...   Apr 16 2022, 05:31 AM
bahnzai   RE: Caliper Weights   Apr 16 2022, 05:39 AM
bahnzai   RE: Caliper Weights   Apr 16 2022, 05:44 AM
bahnzai   John, @wndsrfr What rotor/hat combo are you usin...   Apr 18 2022, 04:15 AM
wndsrfr   John, [b]@[url=http://www.914world.com/bbs2/inde...   Apr 18 2022, 08:29 PM
brant   I think you would need 911 struts and hubs to make...   Apr 18 2022, 09:21 AM
mepstein   I think you would need 911 struts and hubs to mak...   Apr 18 2022, 09:28 AM
Eric_Shea   I think you would need 911 struts and hubs to ma...   Apr 23 2022, 09:16 AM
gandalf_025   I don't think I saw these mentioned in this th...   Apr 25 2022, 07:04 AM
neilbardsley   The #pads numbers mentioned in this thread. Is th...   Jul 17 2024, 01:22 AM

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