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

1970 headlight washer question

Thread Tools
 
Search this Thread
 
Old Oct 16, 2013 | 07:18 PM
  #21  
egon48's Avatar
egon48
Intermediate
20 Year Member
 
Joined: Oct 2001
Posts: 34
Likes: 1
From: las vegas nv
Default

Originally Posted by Alan 71
Hi e48,
What year is your car?
I believe 69 cars had a 3 port pump for the windshield washer and a separate 2 port valve for the headlight washers was mounted to the pump with a small bracket.
Then in 70, the five port pump was used, combining both functions.
Regards,
Alan
1970 feb also has a 5 port with this trico pump by the horn relay just for the headlights,dont know if this was someones add on or orig by GM?

Last edited by egon48; Oct 16, 2013 at 07:21 PM.
Reply
Old Oct 16, 2013 | 07:36 PM
  #22  
Alan 71's Avatar
Alan 71
Team Owner
15 Year Member
Active Streak: 120 Days
Community Influencer
Top Answer: 5
 
Joined: Sep 2006
Posts: 31,335
Likes: 4,451
From: Westminster Maryland
Default

Hi e48,
That's interesting.
I wasn't aware that there was any additional hardware once the change to the 5 port pump took place. I've always though the headlight washer hoses ran directly from the pump ports to the tee just before the nozzles.
I wonder if it was added for some reason?
Regards,
Alan
Reply
Old Oct 17, 2013 | 09:30 AM
  #23  
Tom454's Avatar
Tom454
Le Mans Master
20 Year Member
 
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Default

Originally Posted by egon48
1970 feb also has a 5 port with this trico pump by the horn relay just for the headlights,dont know if this was someones add on or orig by GM?
Probably added.

The 1970 Assembly Manual does not indicate the added pump.
Reply
Old Oct 17, 2013 | 09:35 AM
  #24  
Tom454's Avatar
Tom454
Le Mans Master
20 Year Member
 
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Default

FYI..

1969 Assembly Manual UPC 1-D6, 1-D7, 1-D8.5 differ from 1970 Assembly Manual UPC 1-D7, 1-D10.

My 70 matches the 1970 Assembly Manual.
Reply
Old Oct 17, 2013 | 11:41 AM
  #25  
CanadaGrant's Avatar
CanadaGrant
Safety Car
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
Default

Originally Posted by Alan 71
Hi e48,
What year is your car?
I believe 69 cars had a 3 port pump for the windshield washer and a separate 2 port valve for the headlight washers was mounted to the pump with a small bracket.
Then in 70, the five port pump was used, combining both functions.
Regards,
Alan
My late build (Oct 24th) 69 is like you describe with the 2 port / 3 port system. My question is, if I want to disconnect my headlight washers and intentionally block the line, will it damage the pump? That thing isn't cheap to replace but the headlight washers are really of no value whatsoever except to spray most of the washer fluid all over the paint. When you think about it, there are four headlight washer nozzles and 2 for the windshield so any time you push that button, 2/3rds of your washer fluid is either coming back over your hood or going back through the rad all over your engine depending on headlight position... Might be ok if they actually did something but they are pretty well useless.

Last edited by CanadaGrant; Oct 17, 2013 at 12:59 PM.
Reply
Old Oct 17, 2013 | 01:53 PM
  #26  
egon48's Avatar
egon48
Intermediate
20 Year Member
 
Joined: Oct 2001
Posts: 34
Likes: 1
From: las vegas nv
Default

I would send a picture of the trico pump setup ,but i dont know how to upload picture?
Reply
Old Oct 17, 2013 | 03:35 PM
  #27  
Red Vert 02's Avatar
Red Vert 02
Pro
20 Year Member
All Eyes On Me
 
Joined: Jun 2001
Posts: 628
Likes: 34
From: Evergreen Park Illinois
Default

Originally Posted by CanadaGrant
My late build (Oct 24th) 69 is like you describe with the 2 port / 3 port system. My question is, if I want to disconnect my headlight washers and intentionally block the line, will it damage the pump? That thing isn't cheap to replace but the headlight washers are really of no value whatsoever except to spray most of the washer fluid all over the paint. When you think about it, there are four headlight washer nozzles and 2 for the windshield so any time you push that button, 2/3rds of your washer fluid is either coming back over your hood or going back through the rad all over your engine depending on headlight position... Might be ok if they actually did something but they are pretty well useless.
You will not damage the pump if you by pass the headlight washer solenoid. Disconnect the washer hose coming from the washer pump at the headlight washer solenoid and connect it direct to the washer hose that goes to the wiper arms.
Reply
Old Oct 17, 2013 | 04:13 PM
  #28  
spinadog's Avatar
spinadog
Pro
15 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Nov 2008
Posts: 542
Likes: 3
From: Bloomfield Hills MI
Default

Originally Posted by egon48
1970 feb also has a 5 port with this trico pump by the horn relay just for the headlights,dont know if this was someones add on or orig by GM?
Mine's Feb 19th, 1970 and I have only the 5-port.

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Oct 17, 2013 | 11:50 PM
  #29  
egon48's Avatar
egon48
Intermediate
20 Year Member
 
Joined: Oct 2001
Posts: 34
Likes: 1
From: las vegas nv
Default

Napa makes a rebuild washer pump kit for $30 kit # 665-1745
Reply
Old Oct 18, 2013 | 08:50 AM
  #30  
Tom454's Avatar
Tom454
Le Mans Master
20 Year Member
 
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Default

Originally Posted by egon48
Napa makes a rebuild washer pump kit for $30 kit # 665-1745
Thanks... but that appears to be a 3 port. Is it a 5 port?

http://www.napaonline.com/Catalog/Re...Dp%3d3%26N%3d0
Reply
Old Oct 19, 2013 | 01:36 PM
  #31  
egon48's Avatar
egon48
Intermediate
20 Year Member
 
Joined: Oct 2001
Posts: 34
Likes: 1
From: las vegas nv
Default

Your right its a 3 port rebuild kit.
Reply




All times are GMT -4. The time now is 04:49 AM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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