Jump to content
Dudeland

Rear defrost alternatives to working rear defrost grid.

35 posts / 1627 viewsLast Reply

Recommended Posts

Good morning all

 

Has anyone come up with a good alternative to rear window defog/defrost. 

 

1)The aftermarket frost fighter solution doesn't stick. I tried and failed,  Just won't stick and looks weird with two unmatched sets of defrost strips. 

2) Yes something like Rainex works for a while, but then that goes away.

 

I got this thing, but when i plugged it in, there is a red glowing element,  I want to keep the sources of ignition out of the trunk, for obvious reasons.   Is there anything unobtrusive and factory looking other than trying to source a NOS rear window,  which may not be any better than what I have in terms of elements of the window. 

 

 

 

 

 

s-l1600.thumb.jpg.4a2a1d64dcc010d58f5545ae354dc53e.jpg

 

 

 

 

Share this post


Link to post
Share on other sites

Yeah, I often wondered if some ducting and a powerful fan would help.

I mean, you could plum another heater core, box, fan, ducts etc etc but that's

a real project.  And a lotta plumbing!  I admit to looking at the rear defrost

units out of convertibles, but they're all designed into the rear bulkhead...

which is then designed around them.

 

From time to time, there have been 3rd party glass manufacturers who

had a gridded rear window available.  I don't know what's out there right now,

but anything produced in the last 20 years would far surpass the mediocre original.

 

all I got,

t

 

Share this post


Link to post
Share on other sites
(edited)

I sent a request for shits and giggles,  how bad could it be?

Edited by Dudeland

Share this post


Link to post
Share on other sites
(edited)

Since they have almost continuous 10% discounts on their parts, the shipping cost would be somewhat mitigated.  Also, the pricing is lower if you create an account with them and log in.

Edited by halboyles

Share this post


Link to post
Share on other sites

I have a heated rear glass that has a single scratch on the outside.  The heating grid checked out OK.  I was going to put it back in my car after the restoration but after the serious mission creep I just could not use the scratched glass with a clear conscience.  If you want to come down to Seattle I'll make you a hell of a deal.   

Share this post


Link to post
Share on other sites

I used the Frost Fighter stick-on grid, but I cut it up and stuck each line directly over the original grid (after first scraping away what was left of the copper). I ordered the Frost Fighter in the same width and number of strips as the original grid. It looks stock and has worked great for Seattle conditions for 4 years now.

 

https://www.frostfighter.com/clear-view-defrosters-legacy.htm?gclid=CjwKCAiAyfvhBRBsEiwAe2t_i9klgJL-NSEtqAnPeIkc6InR9OcE70_KmolIGTaaCrkpQ3IBUyg2yBoCm5oQAvD_BwE

 

Share this post


Link to post
Share on other sites

Plape did you use the frost fighter timer and switch as well or the stock switch?

Going to try an install on a non heated rear glass.

Share this post


Link to post
Share on other sites

Is a functioning rear window defogger an anomaly? Mine works ok, not poorly enough to have me considering alternatives. I would like to hook up a timer relay so I don't power it unnecessarily when I forget to switch it off.

Share this post


Link to post
Share on other sites
(edited)

@plape, are you planning on going to the 020202 event? I'd like to see your set up and talk about the install. I also have a dead grid that's been driving me crazy lately, mostly for the fog on the inside of the glass, not ice on the outside. 

 

Also, I believe replacement rear glass from BMW is running about $450 now. Ugh.

 

James

Edited by Teelinger

Share this post


Link to post
Share on other sites
5 hours ago, Jimmy said:

Is the grid /in/ the glass on all of these?

IIRC, rear defroster was an option on the early cars.  My 69 2002 doesn't have one (nor a radio or antenna).  

1969BMW2002011.jpg

 

Share this post


Link to post
Share on other sites

I grabbed one of these from a junkyard years ago. E30 convertible rear defrost fan. However, never got to use it so no clue if it would be effective.

 

1508581032_DefrostFan1.thumb.jpg.91e5ae9a030487eae8eb7a3262de0209.jpg

 

 

Share this post


Link to post
Share on other sites
3 hours ago, jgerock said:

IIRC, rear defroster was an option on the early cars.  My 69 2002 doesn't have one

 

FWIW, '69 was the year the rear defroster was introduced on the VW beetle.

 

32 minutes ago, 02Les said:

E30 convertible rear defrost fan

A fan back there makes some sense, but I'd not be pulling trunk air into the cabin on purpose.  I assume the ducting would have to recirculate cabin air, no?

 

Like James said, fog is more of a problem around here than frost.  I keep a spare wiper blade in the car as standard equipment.  One quick swipe of the windshield/windows and I can see clearly again.  I learned that trick driving foggy old VWs, whose windshield defroster had to blow air up from the back of the car, where it was sucked across the exhaust pipes to be heated, inside heater-box covers that usually got oil soaked.  (If you think these cars smell funny, try driving a vintage VW).

 

This style wiper blade makes the best defogger, imho.

Image result for bosch bar style wiper blade

 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.




×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.