Any wiper motor function experts? Lighter alternative questions.
Thread Starter
Tech Contributor
Joined: Jun 2004
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From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Any wiper motor function experts? Lighter alternative questions.
I'm running out of ideas to take weight out of my '69, and I keep noticing that big heavy looking wiper motor assembly sitting up front and up high. I'd like to replace it with something later and lighter, but mainly lighter. I'm looking for information regarding the non-obvious details that need to be addressed to swap out to a smaller setup. Any help in this area would be appreciated.
Thanks.
Thanks.
Le Mans Master
Joined: May 2003
Posts: 8,877
Likes: 3,556
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
The problem is the park mode.... Nobody makes a new smaller motor w/ that feature.
If you want to modify your firewall- I have a solution.
Many GM 90's cars- Buick/Olds/Caddy have the smaller motors.
I attempted to make this motor work- as I wanted to add a real delay feature . However-when the wipers are parked- the motor is clocked vertical. The arm has the same spline- fairly easy to do IF you mod the firewall...
If you are interested - I have several around- and can weigh the difference.
Here's my thread on it-
https://www.corvetteforum.com/forums...nt-wipers.html
If you want to modify your firewall- I have a solution.
Many GM 90's cars- Buick/Olds/Caddy have the smaller motors.
I attempted to make this motor work- as I wanted to add a real delay feature . However-when the wipers are parked- the motor is clocked vertical. The arm has the same spline- fairly easy to do IF you mod the firewall...
If you are interested - I have several around- and can weigh the difference.
Here's my thread on it-
https://www.corvetteforum.com/forums...nt-wipers.html
Thread Starter
Tech Contributor
Joined: Jun 2004
Posts: 20,934
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
The problem is the park mode.... Nobody makes a new smaller motor w/ that feature.
If you want to modify your firewall- I have a solution.
Many GM 90's cars- Buick/Olds/Caddy have the smaller motors.
I attempted to make this motor work- as I wanted to add a real delay feature . However-when the wipers are parked- the motor is clocked vertical. The arm has the same spline- fairly easy to do IF you mod the firewall...
If you are interested - I have several around- and can weigh the difference.
Here's my thread on it-
https://www.corvetteforum.com/forums...nt-wipers.html
If you want to modify your firewall- I have a solution.
Many GM 90's cars- Buick/Olds/Caddy have the smaller motors.
I attempted to make this motor work- as I wanted to add a real delay feature . However-when the wipers are parked- the motor is clocked vertical. The arm has the same spline- fairly easy to do IF you mod the firewall...
If you are interested - I have several around- and can weigh the difference.
Here's my thread on it-
https://www.corvetteforum.com/forums...nt-wipers.html
I'll read through your thread tomorrow, and see if I can get a bit more comfortable with this project. Thanks.
Le Mans Master
Joined: May 2003
Posts: 8,877
Likes: 3,556
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
Basically the park moves the center of rotation- to pull the wipers down.
You can see in this pic- when parked the smaller motor is clocked vertical to park in the same position as our cars.
Here's my mod- using the new delay board w/ the old motor-
You can see in this pic- when parked the smaller motor is clocked vertical to park in the same position as our cars.
Here's my mod- using the new delay board w/ the old motor-
Thread Starter
Tech Contributor
Joined: Jun 2004
Posts: 20,934
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Thread Starter
Tech Contributor
Joined: Jun 2004
Posts: 20,934
Likes: 962
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Basically the park moves the center of rotation- to pull the wipers down. Thanks for the confirmation. That's the only way/method I could picture in my head for rotating the blades down a touch further prior to the cover closing. 
You can see in this pic- when parked the smaller motor is clocked vertical to park in the same position as our cars.
You can see in this pic- when parked the smaller motor is clocked vertical to park in the same position as our cars.
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Le Mans Master
Joined: May 2003
Posts: 8,877
Likes: 3,556
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
And I confess- meant horizontal!!!
The smaller motor is clocked HORIZONTAL to get the park gears in the same orientation.
Sorry....
Here's how the motor would have to be mounted in the Vette to park...firewall mods needed.
OR -if not using the wiper door - you could mount over on pass side- the actuator area - and just make or get some linkage from the junkyard.
Instructor
Joined: Nov 2011
Posts: 234
Likes: 24
From: Warsaw Ohio
I Also wanted modern pulse Wipers , so I adapted the Wiper motor from a 84 Z-28 and added the necessary wiring to a 84-89 Corvette Wiper Switch . I purposely left the wires way long on the Wiper switch because I'm not sure where I'm gonna mount it yet. Everything works as it should Pulse , Washers , and Wipers . Better function and loose a pound or two, whats not to love with this mod ?
Adapting the Motor to the Car was easy , I removed all 3 mounting studs from the metal plate riveted to the body , drilled the 2 on the drivers side on center for bolts and on the passenger side drilled the plate to match the new Motor. Re-rivet it to the body and everything mounted up like it came that way from the Factory . Some new wiring and you are done .
Sorry for the Pics they were the best I have of this , and its to dam cold to go outside and take new ones.
Adapting the Motor to the Car was easy , I removed all 3 mounting studs from the metal plate riveted to the body , drilled the 2 on the drivers side on center for bolts and on the passenger side drilled the plate to match the new Motor. Re-rivet it to the body and everything mounted up like it came that way from the Factory . Some new wiring and you are done .
Sorry for the Pics they were the best I have of this , and its to dam cold to go outside and take new ones.