Brakes Looking to upgrade or get the most out of what you have stock? All brake discussions go here!

1985 Trans Am, metric or imperial wheel cylinders?

Thread Tools
 
Search this Thread
 
Old 09-06-2020, 03:20 PM
  #1  
Member
Thread Starter
 
theraymondguy's Avatar
 
Join Date: Jun 2020
Posts: 389
Received 86 Likes on 60 Posts
1985 Trans Am, metric or imperial wheel cylinders?

Time to replace wheel cylinders, would they be metric or sae?

I wasn’t able to find definitive information from my search, 82 & 83 sae 84 maybe, 85?

Im working in a single car garage, so I can’t take the car apart to find out for myself.



Thanks for your input
Old 09-06-2020, 08:11 PM
  #2  
Supreme Member

iTrader: (1)
 
sofakingdom's Avatar
 
Join Date: Sep 2005
Posts: 26,123
Received 1,688 Likes on 1,283 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: 1985 Trans Am, metric or imperial wheel cylinders?

Most likely, metric. No guarantees.
The following users liked this post:
theraymondguy (10-05-2020)
Old 09-07-2020, 04:49 PM
  #3  
Junior Member

 
two85z28s's Avatar
 
Join Date: May 2009
Location: New York
Posts: 38
Likes: 0
Received 1 Like on 1 Post
Car: 1985 Z28
Engine: 305
Transmission: T5
Axle/Gears: 3.23
Re: 1985 Trans Am, metric or imperial wheel cylinders?

My 85 Z28 has metric brake lines, so I would agree, most likely metric, but anything is possible, especially if they have already been replaced before.
The following users liked this post:
theraymondguy (10-05-2020)
Old 09-08-2020, 07:19 AM
  #4  
naf
Supreme Member

iTrader: (7)
 
naf's Avatar
 
Join Date: May 2004
Location: Lexington, SC
Posts: 5,291
Likes: 0
Received 58 Likes on 52 Posts
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Re: 1985 Trans Am, metric or imperial wheel cylinders?

either way, if you buy new you can use the innards to re-build the ones you have if the brake line fitting is wrong.

several years ago I tried to acquire a set of the older, pre-85 cylinders but kept getting the newer ones that wouldn't attach to my brake lines. wound up just re-building the old ones.
The following users liked this post:
theraymondguy (10-05-2020)
Old 10-05-2020, 08:22 PM
  #5  
Member
Thread Starter
 
theraymondguy's Avatar
 
Join Date: Jun 2020
Posts: 389
Received 86 Likes on 60 Posts
Re: 1985 Trans Am, metric or imperial wheel cylinders?

Thanks guys, they were metric - the factory lines had 12mm headed fittings.

What a peach those retaining springs are!

Almost 3 hours for the passenger side, about 25 minutes on the drivers side. I made up a sleeve from an old motorcycle exhaust (couldn’t find a socket that’d fit in the opening and slip over the wheel cylinder. There is a brace on top of the axle which can be used to lever against, put even pressure on the retaining spring. Once you hear the most satisfying click ever identifying one side has dropped in, the other can be tapped in with a small chisel and hammer.




Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
xgtharo86x
Interior
4
12-06-2006 09:35 AM
Kandied91z
Auto Detailing and Appearance
20
06-18-2004 03:15 PM
HasseO
Tech / General Engine
1
05-02-2004 11:20 AM
Greg Kuhlmann
Tech / General Engine
14
04-08-2002 10:26 PM



Quick Reply: 1985 Trans Am, metric or imperial wheel cylinders?



All times are GMT -5. The time now is 12:31 AM.