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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Sat Jun 21, 2008 9:35 pm Post subject: Fresh Air Box Vibration Isolator Mounts (pics) |
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For anyone working on a fresh air box for the 1971/1972 Super Beetle and the 1971-1973 Type 3, one of the common repair problems that many of you have mentioned is the need for a good replacement for the square vibration isolator mounts. Some of you guys have come up with some good ideas for fixing the problem. I will add the following to the list.
Karman Rubber Company has a square dampner that works fairly well. While they advertise several square dampners, they currently only stock the S420-50 Square Mount in 50 Durometer Natural Rubber (S420-AA51). The minimum order is 8 pieces @ $6.95/each, 25 pieces @ $4.50/each, 50 pieces @ $3.25/each.
Differences:
The replacement is a solid rubber dampner. The form factor matches the VW original size fairly close.
The replacement threaded studs are ANSI 1/4-20.
The original threaded studs are metric M6X1.
That equates to the replacement studs being about 1mm larger in diameter and 5 less threads per inch. Original washers will fit, but you will need some new nuts.
The price is fairly reasonable when you purchase 50 pieces- with shipping it works out to approximately $3.50 each. I picked up 25 and the price worked out to $4.96.
See the attached photos.
Pat (66foot)
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jamesdagg Samba Member
Joined: August 18, 2007 Posts: 3364 Location: B.C.Canada
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Posted: Sat Jun 21, 2008 9:44 pm Post subject: |
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Good find!! Thanks for sharing. I may be picking up another box at a local wrecker. That will be 3 I have for one car.
jim _________________ '72 FI Westy
'71 Super rear inside defrost vents no longer available |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Sat Jun 21, 2008 9:50 pm Post subject: |
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Jamesdagg -
Ditto. My wife keeps asking me how many of these things do I need.
Some of the recent sales on Ebay are fetching $100.00 plus!
A couple of weeks ago $150, yesterday $96 (with hardware), last week a lucky soul got one for $33. There is one currently posted there for $50, but you have to send a check or money order.
Pat (66foot) |
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jamesdagg Samba Member
Joined: August 18, 2007 Posts: 3364 Location: B.C.Canada
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Posted: Sun Jun 22, 2008 9:54 pm Post subject: |
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The wrecker here wants $100 for one as is so I'm waiting for him to come down to $60 or so.
They can't be gotten new and they can be reto fit to earlier std. Beetles.
jim _________________ '72 FI Westy
'71 Super rear inside defrost vents no longer available |
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Baja Champ SE Samba Member
Joined: June 09, 2007 Posts: 442
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Posted: Mon Jun 23, 2008 2:07 pm Post subject: |
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66foot,
Since you seem to be the expert on the fresh air box (used your original video to take mine apart), is there a huge problem if I were to run the fan box with the broken rubber mounts? I'm about to put it back in my car, and would rather not have to take it out again.
Kelle _________________ -1972 Baja Champion SE Super Beetle "Frank the Freak"
SOLD
-1969 Deluxe Bus "Warhaul" aka "Project Whitestock"
Air Speed VW Club of So Cal
Member Since July 2007 |
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Gary Person of Interest
Joined: November 01, 2002 Posts: 17069 Location: 127.0.0.1
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Posted: Mon Jun 23, 2008 2:13 pm Post subject: |
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Great timing on this as I need to install the box in my Super (it was missing). You could make money if you acquired the materials and sold kits here on the Samba -- PLUS -- you'd be doing everyone a favor.
Your pictures are great as well. Pics are always important. _________________ West Virginia State Board of Education v. Barnette, 319 U.S. 624 (1943) |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Mon Jun 23, 2008 5:00 pm Post subject: |
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MGBaja_Smurf -
I would not suggest replacing your fan with broken mounts. The square mounts bolt into the "top" of the fresh air box. Therefore, with broken mounts your fan could fall into the box, held up by only the wires and the sides and bottom of the box. Your side vent flaps could also become inoperable.
If you need some replacement mounts just let me know.
Pat (66foot)
Last edited by 66foot on Mon Jun 23, 2008 5:04 pm; edited 3 times in total |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Mon Jun 23, 2008 5:01 pm Post subject: |
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Icy -
Thanks. I sent you a pm.
Pat (66foot) |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Mon Jun 23, 2008 5:15 pm Post subject: |
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JamesDagg -
Here is another Fresh Air Box on Ebay, but they want $50.00, they don't take Paypal, and they don't give any indication of shipping costs.
Pat (66foot) |
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Raggamuffin Samba Member
Joined: July 18, 2006 Posts: 789 Location: GA
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Posted: Mon Jun 23, 2008 8:16 pm Post subject: |
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Wow! Was pretty certain I got a good deal on on this weekend at pull-a-part, then I read this post. $8.00...SCORE! |
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realbugfanatic Samba Member
Joined: May 03, 2006 Posts: 484 Location: SW Michigan
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Posted: Tue Jun 24, 2008 4:24 am Post subject: |
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You can also find very similar mounts from industrial suppliers, although they're solid. Here's a round one from msc-direct.com part number 63661524 or try page 1350 on mcmaster.com for a variety of inch sizes. Remember that 6mm = roughly 0.240" or in reverse 1/4" = 6.35mm so you're only talking 0.010" difference, not 1mm - they will be very close. |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Tue Jun 24, 2008 4:14 pm Post subject: |
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VW12Step -
I don't think I have ever seen a Fresh Air Box for $8.00.
As long as it has a fan inside, that isn't toast, then I agree.....SCORE!
Pat (66foot) |
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Baja Champ SE Samba Member
Joined: June 09, 2007 Posts: 442
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Posted: Tue Jun 24, 2008 5:09 pm Post subject: |
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66foot
you should have a PM waiting _________________ -1972 Baja Champion SE Super Beetle "Frank the Freak"
SOLD
-1969 Deluxe Bus "Warhaul" aka "Project Whitestock"
Air Speed VW Club of So Cal
Member Since July 2007 |
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66foot Samba Member
Joined: November 19, 2006 Posts: 394 Location: Pacific Grove, California
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Posted: Tue Jun 24, 2008 5:42 pm Post subject: |
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Realbugfanatic -
I have some of the round dampeners also, but I found that these square ones fit the alignment ridges very well.
Pat (66foot)
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realbugfanatic Samba Member
Joined: May 03, 2006 Posts: 484 Location: SW Michigan
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Posted: Tue Jun 24, 2008 6:16 pm Post subject: |
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Cool, then they're worth the price! |
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Baja Don Samba Member
Joined: August 02, 2011 Posts: 5 Location: Pensacola, FL
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Posted: Wed Dec 28, 2011 12:44 pm Post subject: |
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The motor in my fresh air box is shot. Somebody (not me) decided to put the low and high wires together at the same time, and it smoked the motor! Literally, smoke came out of it!
Do you know of a replacement motor out of some other type car that would fit the fan blade and 4 mounting screw holes?
Would you recommend a motor that I could adapt?
Thanks |
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VeedubPastor Samba Member
Joined: September 03, 2009 Posts: 761 Location: Maryland
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Posted: Wed Dec 28, 2011 7:50 pm Post subject: |
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Baja Don wrote: |
The motor in my fresh air box is shot. Somebody (not me) decided to put the low and high wires together at the same time, and it smoked the motor! Literally, smoke came out of it!
Do you know of a replacement motor out of some other type car that would fit the fan blade and 4 mounting screw holes?
Would you recommend a motor that I could adapt?
Thanks |
Why not just get the right motor instead of adapting one? _________________ 1971 Super Beetle - Daily Driver
Solex H30/31 & 034 distributor (yeah, I know)
Stock thermostat & flaps
Stock air cleaner and emissions equipment |
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td2dv Samba Member
Joined: June 12, 2015 Posts: 1 Location: Minneapolis
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Cali_Army_Guy Samba Member
Joined: March 19, 2015 Posts: 2094 Location: Stockton, CA
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Posted: Tue Jan 12, 2016 3:18 pm Post subject: Re: Fresh Air Box Vibration Isolator Mounts (pics) |
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Damn $100 and up?
I gave away my working fresh air box motor and threw away the rest of it |
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Rach Samba Member
Joined: June 14, 2016 Posts: 3 Location: Colorado Springs, CO
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Posted: Sun Oct 09, 2016 1:51 pm Post subject: Re: Fresh Air Box Vibration Isolator Mounts (pics) |
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Just finished cleaning my fresh air box (HUGE thanks to Pat/66foot for the amazingly thorough and helpful tutorial on vimeo!! I watched and rewatched and was able to do my first project for my bug much appreciated!)
for the mounts we found these online and they worked great had to trim off about 1/2" off each thread with a dremmel for them to fit but all's well now
got all 4 for just under $17 shipped. Might be able to find these exact ones in the states.
http://www.banggood.com/4pcs-M6x20x10mm-Rubber-Sho...66950.html
Hope that helps! I about had a meltdown looking for these... I bought some others at Grainger, but didn't read correctly and they were way too big. |
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