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‘87 IROC rear disk woes

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Old May 28, 2025 | 10:01 PM
  #1  
antielvis's Avatar
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Joined: Jun 2007
Posts: 14
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From: SE MN
Car: 1987 20th Anniv. IROC-Z Convertible
Engine: 5.0 TPI
Transmission: 5 Speed
‘87 IROC rear disk woes

Looking for a sanity check here. Replacing my original calipers with stock replacements. Passenger side went ok (though that hose could have been an inch or two longer). Driver’s side was going well until I tried to connect the metal brake line. Little diagnosing showed me the new caliper needs a M10x1.5 fitting. The fitting on my brake line >appears< to be M10x1.0 (finer threads). Thought I might have gotten the wrong caliper, but the ones I see online that tell me the inlet size all say M10x1.5

I could change out the original line with a new one but can’t tell what size fittings come on them. Am I missing something obvious here?
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Old Jun 1, 2025 | 02:58 PM
  #2  
antielvis's Avatar
Thread Starter
Junior Member
15 Year Member
 
Joined: Jun 2007
Posts: 14
Likes: 2
From: SE MN
Car: 1987 20th Anniv. IROC-Z Convertible
Engine: 5.0 TPI
Transmission: 5 Speed
Re: ‘87 IROC rear disk woes

Think I just found the answer to my own question. I was sitting by the garage with a beverage and a good dog when I looked over at the old caliper sitting in the grass. I noticed there’s a little block bolted to the old caliper that the brake line screw into. Looks like bolting that on to the new caliper will solve my issue. Thank the gods I kept the old parts while the project was still in process. I’ll post a pic here once back together in case someone else has the same issue in the future
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Old Jun 1, 2025 | 08:13 PM
  #3  
antielvis's Avatar
Thread Starter
Junior Member
15 Year Member
 
Joined: Jun 2007
Posts: 14
Likes: 2
From: SE MN
Car: 1987 20th Anniv. IROC-Z Convertible
Engine: 5.0 TPI
Transmission: 5 Speed
Re: ‘87 IROC rear disk woes


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