| [GMCnet] front calipers part #'s [message #317397] |
Thu, 11 May 2017 18:04  |
Ek_Lektro
Messages: 167
Registered: March 2011
Karma: 2
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Senior Member |
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Just a quick question, seeking part #’s for a pair of front brake calipers please.
I went down to AutoZone with parts interchange numbers and none of them matched anymore.
When searching ’78 Olds Toronado, they offered part # C132 and C133 (Durlast remanufactured)
but i’m guessing we have bigger calipers than the standard Toronado?
(but Duralast remanufactured is fine)...
Thanks much,
Greg
’76 Birchhaven (got attention in April)
May is the month for the ’78 Eleganza II :)
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| Re: [GMCnet] front calipers part #'s [message #317403 is a reply to message #317397] |
Thu, 11 May 2017 19:17  |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Are you replacing the stock OEM calipers? If you have moved to 16" aluminum wheels, consider replacing OEM with 80mm front calipers. Part numbers should be in parts list. You will also have to replace the front brake hoses. Not a big deal.
Otherwise, take one of your current front calipers to the parts store and compare them to the offered Duralast rebuilds. There is a 'right side' and a 'left side', hence two different part numbers.
Note: 80mm calipers will not fit within the physical constrants of the 16" steel wheel.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] front calipers part #'s [message #317420 is a reply to message #317397] |
Fri, 12 May 2017 00:03 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Stock would be the same as the toranado but I would do as Tom suggests and get the 80mm and carbon friction pads. If you buy the rebuilt 80mm calipers first you shouldn't have a problem returning the old cores for credit otherwise you may have a problem getting the core return. There is a write up doing the interchange if you go that route.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: [GMCnet] front calipers part #'s [message #317449 is a reply to message #317397] |
Fri, 12 May 2017 11:45 |
Ek_Lektro
Messages: 167
Registered: March 2011
Karma: 2
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Senior Member |
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hey thanks Thomas,
but i already bought the 2 front hoses, standard size
and was planning to just go standard with the calipers,
unless a consensus of people here chime in to tell me why 80mm are so much better for 16” aluminum wheels?…
(and are there any drawbacks?) ( i don’t see any part #s for 80mm on my older version
of the Parts Exchange (2012!) (and as i was saying before, the part #s for the standard calipers are also coming back outdated)
Either way, i need to buy these BEFORE i remove the old ones,
so i can have them in hand at the shop (in Mexico)…
So that’s why part numbers are very much needed, por favor :)
> seeking part #?s for a pair of front brake calipers please.
searching 78 Olds Toronado, they offered part # C132 and C133 (Durlast remanufactured)
but im guessing we have bigger calipers than the standard Toronado?
(but Duralast remanufactured is fine)…
PS: brake pads recommendations also appreciated :)
Thanks all, and thanks again!
Greg
> Are you replacing the stock OEM calipers? If you have moved to 16" aluminum wheels, consider replacing OEM with 80mm front calipers. Part numbers
> should be in parts list. You will also have to replace the front brake hoses. Not a big deal.
> Otherwise, take one of your current front calipers to the parts store and compare them to the offered Duralast rebuilds. There is a 'right side' and a
> 'left side', hence two different part numbers.
> Note: 80mm calipers will not fit within the physical constrants of the 16" steel wheel.
> Tom, MS II
> --
> 1975 GMC Avion
> KA4CSG
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| Re: [GMCnet] front calipers part #'s [message #317456 is a reply to message #317449] |
Fri, 12 May 2017 13:10 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Gregg,
Here's a link where you can learn more about the 80mm front brake upgrade,
as well as information on other brake modifications:
http://gmcmotorhome.info/brakes.html#HOWTO
The "bottom line", is that the 80mm caliper upgrade is the simplest
modification available to improve braking significantly. It is not
necessary to replace the MC for the change, yet you'll improve the front
braking force by at least 20% vs the OEM calipers.
Now is the time to do the mod because you're going to spend approximately
the same money for OEM replacement anyway and won't have a similar
opportunity for at least 50,000 miles. Return the OEM front brake hoses
and swap them for the required "banjo end" hoses. Purchase the 80mm
calipers instead of the OEM version. And buy the same brake pads you
should use with either caliper: Performance Friction 0052.20. They're
usually available at a significant discount on eBay, etc., or at O'Reilly's
for $80.
I've done a lot of brake mods and testing over the past 19 years, and
that's JWID,
Ken H.
On Fri, May 12, 2017 at 12:45 PM, Ek_Lektro wrote:
> hey thanks Thomas,
> but i already bought the 2 front hoses, standard size
> and was planning to just go standard with the calipers,
> unless a consensus of people here chime in to tell me why 80mm are so much
> better for 16” aluminum wheels?…
> (and are there any drawbacks?) ( i don’t see any part #s for 80mm on my
> older version
> of the Parts Exchange (2012!) (and as i was saying before, the part #s for
> the standard calipers are also coming back outdated)
>
> Either way, i need to buy these BEFORE i remove the old ones,
> so i can have them in hand at the shop (in Mexico)…
> So that’s why part numbers are very much needed, por favor :)
>
>> seeking part #?s for a pair of front brake calipers please.
> searching 78 Olds Toronado, they offered part # C132 and C133 (Durlast
> remanufactured)
> but im guessing we have bigger calipers than the standard Toronado?
> (but Duralast remanufactured is fine)…
>
> PS: brake pads recommendations also appreciated :)
>
> Thanks all, and thanks again!
> Greg
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] front calipers part #'s [message #317529 is a reply to message #317508] |
Sun, 14 May 2017 12:19 |
Tony Cook
Messages: 121
Registered: August 2014
Location: Torrance CA
Karma: 0
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Senior Member |
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Good choice I did the same you just have to grind a little bit of the casting and get creative with the hose routing but you'll be glad you decided on the upgrade.
Tony Cook
77' Kingsley ' SuperSession 77 '
Torrance Beach,CA
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| Re: [GMCnet] front calipers part #'s [message #317530 is a reply to message #317529] |
Sun, 14 May 2017 12:22 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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You will have to slightly bend the hoses. Bend slowly and carefully. Good time to take a look at your CV boots.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] front calipers part #'s [message #317573 is a reply to message #317570] |
Mon, 15 May 2017 12:51 |
77Royale
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma: 6
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Senior Member |
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Take the time to put a coat or two of hi temp caliper paint on the calipers after grinding off the casting nub. Also put a few careful wraps of teflon tape on the bleeder screws. You will thank yourself in a few years when you need to bleed the brakes again.
77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy.
Mid Michigan
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| Re: [GMCnet] front calipers part #'s [message #317580 is a reply to message #317570] |
Mon, 15 May 2017 16:21 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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If you purchased carbon metallic brake pads it is important to sand the
disks to open the pores in the cast iron. The carbon metallic pads will
transfer material from the pads to the disks which will extend the life of
the disks.
I was talking with Dave Lenzi about this at the Shawnee Convention and he
told me what grit paper he uses, unfortunately that was last month and I've
forgotten!
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of
Ek_Lektro
Fantastic out-pouring of info from everybody, thanks again;
and thanks to Tom Phipps for being the first one to advise me
to consider the upgrade (when i was just looking for OEM part numbers)!
I think i'm set to go on this job (we'll start in about a week).
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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