C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Wiper Vacuum Relay Mount

Thread Tools
 
Search this Thread
 
Old Jan 15, 2023 | 01:51 PM
  #1  
Greentension's Avatar
Greentension
Thread Starter
Advanced
Conversation Starter
All Eyes On Me
 
Joined: Sep 2022
Posts: 99
Likes: 12
From: Ontario Canada
Default Wiper Vacuum Relay Mount

So I have to reinstall the wiper door vacuum relay mount onto the fire wall. I know that at some point in 69, they moved the location of the valve for some reason. What I need to know is which is the preferred location. More forward or more rearward. Mine originally was forward.
Thanks again for every ones help.
Reply
Old Jan 16, 2023 | 07:25 AM
  #2  
Greentension's Avatar
Greentension
Thread Starter
Advanced
Conversation Starter
All Eyes On Me
 
Joined: Sep 2022
Posts: 99
Likes: 12
From: Ontario Canada
Default

I seem to remember reading something about hood clearance..
Reply
Old Jan 16, 2023 | 02:40 PM
  #3  
robertea's Avatar
robertea
Burning Brakes
All Eyes On Me
Photogenic
Photoriffic
Top Answer: 1
 
Joined: Sep 2020
Posts: 831
Likes: 808
From: Chapin SC 29036
Default

I think most were mounted up near the master cylinder. At some point they moved some of them to the passenger side, but my 427 with Air there is not much room over there.
Also, if you moved the mounting location the original hoses would not fit.

Reply
Old Jan 16, 2023 | 05:30 PM
  #4  
Greentension's Avatar
Greentension
Thread Starter
Advanced
Conversation Starter
All Eyes On Me
 
Joined: Sep 2022
Posts: 99
Likes: 12
From: Ontario Canada
Default

That's a great picture .This helps out a lot. From the looks of the mounting holes in my firewall, that's where mine should go but I see a lot of them set back about 3 inches from there.
Reply
Old Jan 16, 2023 | 06:00 PM
  #5  
JBrooke825's Avatar
JBrooke825
Drifting
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2002
Posts: 1,787
Likes: 261
From: Blue Bell PA
2018 C3 of Year Finalist
Default

Mine is down below the ac it’s visible through the lower grills.
Reply
Old Jan 16, 2023 | 08:32 PM
  #6  
C3 Stroker's Avatar
C3 Stroker
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2004
Posts: 3,926
Likes: 739
From: Youngstown Ohio
Default

Originally Posted by robertea
I think most were mounted up near the master cylinder. At some point they moved some of them to the passenger side, but my 427 with Air there is not much room over there.
Also, if you moved the mounting location the original hoses would not fit.
That's exactly like on my '69. It's removed now, since I've converted to an electric wiper door.
Reply

Get notified of new replies

To Wiper Vacuum Relay Mount





All times are GMT -4. The time now is 04:51 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE