Converting 110 calipers to 90 - Defender Source
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  #1  
Old September 11th, 2012, 08:12 PM
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Brett Fritzler
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Converting 110 calipers to 90

I searched and I apologize if I missed it.
I have a set of 110 front calipers with a fresh rebuild. It's my understanding the only thing that stands in my way of running vented rotors on these(like the 90) is a couple small spacers. A few questions.
Is this true?
Will a spacer from a RRC caliper work?
If not, where can I source these spacers?
Can anybody tell me how thick these spacers are?

I tried Bill at GBR but his spacers are for stock Disco calipers and he swears up and down that the fluid holes do not line up with those of a 110/90 caliper.
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  #2  
Old September 11th, 2012, 08:35 PM
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Ray Gerber
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Brett-
Unless I'm crazy the front Disco calipers and the 110's calipers are the same (thus the spacers should work). I don't think the RRC setup is the same...but someone will probably chime in there.

I'm fairly sure about the D1 <-> 110 caliper thing as I switched to 90 calipers (and rotors) on my D1 and gave the D1 calipers to a 110 owner... (the rotor box also said 110/D1/etc).
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  #3  
Old September 11th, 2012, 08:36 PM
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My understanding was that a spacer would work. But unfortunately I couldn't find any when I did mine a couple years back. Gave up on rebuilding them and bought 90 calipers.
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  #4  
Old September 11th, 2012, 08:52 PM
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Brett Fritzler
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Ray, IDK about all 110 calipers but the ones I have are definitely bigger than my stock Disco calipers. D1's have 41 mm pistons, the 110 calipers I have and NAS 90's have are 46mm. The 110 and NAS 90's also use a larger pad than D1's.

Here's a secondary question.
What would provide better braking?
A) 110 calipers with larger pistons and pads on solid rotors
B) D1 calipers with smaller pistons and pads but spaced to fit a vented rotor
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  #5  
Old September 11th, 2012, 08:59 PM
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Ray Gerber
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Fascinating.
The 90 calipers I have were/are def larger than the D1's, I did not realize that while the rotors are the same the 110 and the D1 use different calipers-my apologies.

I'd go with the larger pistons...
r-
Ray
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  #6  
Old September 11th, 2012, 09:04 PM
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Reman calipers even if you eat the core charge are $113 each at rock auto.
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  #7  
Old September 11th, 2012, 09:07 PM
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Brett Fritzler
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Quote:
Originally Posted by evilfij View Post
Reman calipers even if you eat the core charge are $113 each at rock auto.
Yeah, these were rebuilt and free. Sooooo I'd rather just source some spavers if they exist.
Anyone know if the RRC spacers will fit? Or for that matter, how is a RRC caliper different from a Nas 90?
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  #8  
Old September 11th, 2012, 09:14 PM
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Ray Gerber
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Quote:
Originally Posted by fishEH View Post
Yeah, these were rebuilt and free. Sooooo I'd rather just source some spavers if they exist.
Anyone know if the RRC spacers will fit? Or for that matter, how is a RRC caliper different from a Nas 90?
RRC calipers are a different setup (two lines going in vice the one) IIRC-they are different than the D1, D90, and D110 setup. (of course...b/c they are nearly identical mechanically in most facets, except here.)
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  #9  
Old September 11th, 2012, 09:39 PM
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Quote:
Originally Posted by fishEH View Post
Yeah, these were rebuilt and free. Sooooo I'd rather just source some spavers if they exist.
Anyone know if the RRC spacers will fit? Or for that matter, how is a RRC caliper different from a Nas 90?
I don't know but I have a box of like 20 calipers sitting here you are welcome to come scrounge.
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  #10  
Old September 11th, 2012, 09:49 PM
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Originally Posted by evilfij View Post
I don't know but I have a box of like 20 calipers sitting here you are welcome to come scrounge.
PM sent.
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  #11  
Old September 11th, 2012, 11:05 PM
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Jon Miller
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Rovers Down South has/had the spacers and longer bolts to convert the 110 calipers for use with vented rotors. I bought a set from him a while back.
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  #12  
Old September 12th, 2012, 12:18 AM
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Quote:
Originally Posted by Miller View Post
Rovers Down South has/had the spacers and longer bolts to convert the 110 calipers for use with vented rotors. I bought a set from him a while back.
Awesome, I'll call them tomorrow. Do you recall how much they were?
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  #13  
Old September 12th, 2012, 09:35 AM
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I checked with South Down Rovers.
The spacers are $90.........per caliper!
Seems really obscene when new calipers can be had for $93. SEB500460/470 http://rovahfarm.com/defenderbrakes.htm
Obviously these calipers probably arent as good as genuine, but I could probably pull the spacers and turn around and sell the $93 calipers and make half my money back.
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  #14  
Old September 12th, 2012, 09:41 AM
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Could you make the spacers on my lathe Brett???
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  #15  
Old September 12th, 2012, 10:01 AM
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Could you make the spacers on my lathe Brett???
Hey Andrew! I didn't know you were on here.
I'm pretty sure I could make the spacers myself. The only thing stopping me is drilling the recess for the channel o ring to sit in. I don't feel comfortable doing thag with a drill bit and lack the proper tool to do it. Not sure if a lathe would accomplish this or not?
And I thought I'd have some time to work on this but now my rotors are warped and I want to het it done before the Oct trip.
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  #16  
Old September 13th, 2012, 09:12 AM
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Andrew
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ahh, I see what you are saying. Would the recess be in the caliper main body correct? That may not be so friendly to put in the chuck and spin around... lol I cannot go on the trip, if it were a week later I could but school exams are that week. However, the weekend after (Oct 17th)I am actually going to be installing my new steering box, which was cheaper to buy in England and have shipped to the states, and doing my winter prep and if my bumper is here I'll be attaching that too, so possible garage day!???
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  #17  
Old September 13th, 2012, 10:33 AM
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Brett Fritzler
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Quote:
Originally Posted by USLandy View Post
ahh, I see what you are saying. Would the recess be in the caliper main body correct? That may not be so friendly to put in the chuck and spin around... lol I cannot go on the trip, if it were a week later I could but school exams are that week. However, the weekend after (Oct 17th)I am actually going to be installing my new steering box, which was cheaper to buy in England and have shipped to the states, and doing my winter prep and if my bumper is here I'll be attaching that too, so possible garage day!???
The calipers are good to go. I would need to machine a recess into the spacers to accommodate another channel seal. So I suppose it would be possible to machine the recess in a bare chunk of steel, then just cut the spacers out from the steel around the seal recess.
I'm waiting on a price from Justin for the whole D90 upgrade kit.
I don't think I'll be available for a garage day the weekend after. I've got a ton of work to do before the trip, the 5 days for the trip itself. So I don't think my wife or kids would appreciate me being gone the next weekend for a garage day, LOL.
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  #18  
Old September 13th, 2012, 10:58 AM
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So then what calipers are on the front of an '86 110? It appears that it could be RTC5573, AEU2538 or SEB500470.
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