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Old 03-29-2025, 04:17 PM
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grivera grivera is offline
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Default Brake Pedal Pushrod Length - Manual Brakes

Is there a specified clearance needed for the brake pedal pushrod and the piston in the master cylinder for manual brakes? The car is a 66 Lemans with aftermarket 2 reservoir master cylinder.

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
  #2  
Old 03-29-2025, 05:35 PM
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65 Lamnas 65 Lamnas is offline
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Quote:
Originally Posted by grivera View Post
Is there a specified clearance needed for the brake pedal pushrod and the piston in the master cylinder for manual brakes? The car is a 66 Lemans with aftermarket 2 reservoir master cylinder.
I set the clearance by "feel". Make sure you're in the upper hole on the pedal. Extend the push rod until there is no longer any clearance, then shorten it by 1/2 turn, lock the jam nut and call it good. If you were running power assist brakes is when you would use the lower hole in the pedal.

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Old 03-29-2025, 05:37 PM
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Thank you! Will give that a go

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
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Old 03-31-2025, 09:10 AM
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It turns out my brake pedal return spring is missing. Gotta find a source for one. Searching the Ames website by keyword is worthless.

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
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Old 03-31-2025, 09:17 AM
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Quote:
Originally Posted by grivera View Post
It turns out my brake pedal return spring is missing. Gotta find a source for one. Searching the Ames website by keyword is worthless.
Old school Ames paper catalog is better for searching.

Eric

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  #6  
Old 03-31-2025, 09:51 AM
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I emailed Ames and was advised it doesn’t use a spring. I see the hole for it and it has the little tab on the clevis pin. I think I e seen a diagram showing it.

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
  #7  
Old 03-31-2025, 11:51 AM
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http://forums.maxperformanceinc.com/....php?p=6468974 Good pic of it here in #5 post.

  #8  
Old 03-31-2025, 12:49 PM
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Thank you - that is great. May have to source an off the shelf spring.

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
  #9  
Old 03-31-2025, 07:24 PM
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grivera grivera is offline
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Found the spring at Musclecar Central: https://www.musclecarcentral.com/196...p/ppd-831b.htm

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Will Rivera

'69 Firebird, 400/461, 290 Eddy D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears
'69 LeMans Vert, XS 350, #47 heads, TH400, 10 Bolt 3.23 gears, work in progress
‘66 Lemans, 455, 310 KRE D-Ports, HR 236/245, TH400, GV OD, 12 bolt 3.73 gears - see it here:
https://youtu.be/RP_s1wJKm_Y?si=K0NZxoTyaGcj8Dcb
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