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> Boxster Wiper Motor
McMark
post Jul 17 2012, 02:13 PM
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Just bought a wiper motor off a 2003 Boxster to see how interchangeable they are with ours. Modern speed wipers is on my list of things to make the 914 wife-worthy.

Pictures and thoughts once the part arrives later this week.

*Looked a Boxster seat belts as well. (IMG:style_emoticons/default/idea.gif)
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McMark
post Jul 22 2012, 10:42 AM
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Attached Image Attached Image

Differences:

- The wiper linkage arm on the Boxster is longer (the gold piece below, pic from boxster). This means the 914 pieces may move faster then the Boxster. But that's a good thing. I can slow down a motor, but I can't speed it up.
(IMG:http://www.914world.com/bbs2/uploads_offsite/i18.ebayimg.com-419-1342975321.1.JPG)

- The bolts and drive shaft on the 914 motor are longer to allow the motor to clear the bracket in two place.
Attached Image

First the 914 bracket will bump into the Boxster motor. This can be clearanced easily with a grinder.
Attached Image

The second is the linkage drive arm will bump into the rubber mount. There is a little bit the can be removed from the arm and a little bit that can be removed from the rubber mount. This should clear. Worse case scenario, I can cut and weld the drive arm to have it run higher up. I don't want to do this because that will also make some undesirable forces that could lead to unexpected failure later on in life.
Attached Image

- Wiring
The red wire is the fast speed and the green wire is the slow speed (motor body is ground). The three unwired connections are the motor park connections. They look like simple pass through connections (which is what I thought they were), but I took off the cover and discovered connections inside that correspond with the connections outside. The center pin (#2) is the common rail. The inside pin (#3) is disconnected at the park location, but connected the rest of the rotation. The outside pin (#1) is connected at park and disconnected the rest of the rotation.
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smj
post Jul 22 2012, 04:13 PM
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QUOTE(McMark @ Jul 22 2012, 08:42 AM) *

- The bolts and drive shaft on the 914 motor are longer to allow the motor to clear the bracket in two place.

First the 914 bracket will bump into the Boxster motor. This can be clearanced easily with a grinder.

The second is the linkage drive arm will bump into the rubber mount. There is a little bit the can be removed from the arm and a little bit that can be removed from the rubber mount. This should clear. Worse case scenario, I can cut and weld the drive arm to have it run higher up. I don't want to do this because that will also make some undesirable forces that could lead to unexpected failure later on in life.


Probably a stupid question, but you've got to go with your strengths in life: Why can't you use spacers and longer bolts for mounting, and a widget to extend the drive shaft?
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Posts in this topic
McMark   Boxster Wiper Motor   Jul 17 2012, 02:13 PM
SirAndy   :cheer:   Jul 17 2012, 02:22 PM
CG-914   good idea if its going to work! :Qarl: I kno...   Jul 17 2012, 02:38 PM
aharder   The wiper motor is on my list of to-do's :D I...   Jul 17 2012, 02:51 PM
mrbubblehead   :popcorn:   Jul 17 2012, 04:41 PM
kg6dxn   Thinking about using the VW Passat one on mine. St...   Jul 17 2012, 09:41 PM
McMark   I just bought the bare motor and I'm hoping it...   Jul 17 2012, 10:32 PM
76-914   I just bought the bare motor and I'm hoping i...   Jul 19 2012, 02:48 PM
scott_in_nh   a couple of good coats of Rain-X + some speed and ...   Jul 19 2012, 02:04 PM
SirAndy   A delay would be nice, but that is a whole lot of ...   Jul 19 2012, 02:14 PM
jimsfolly   I added a delay box from JCW for about $25, g...   Jul 19 2012, 02:15 PM
wingnut86   Mike, What years of Passat? Or are you just goin...   Jul 19 2012, 07:15 PM
ruby914   I added a delay box from JCW for about $25, ...   Jul 19 2012, 08:00 PM
jimsfolly   I added a delay box from JCW for about $25,...   Jul 20 2012, 10:47 AM
ruby914   [quote name='ruby914' post='1711990' date='Jul 19...   Jul 20 2012, 05:25 PM
jimsfolly   [quote name='ruby914' post='1711990' date='Jul 1...   Jul 20 2012, 06:41 PM
9146986   FWIW, there's a plug in VW intermittent wiper ...   Jul 20 2012, 07:30 AM
McMark   Tracking says it was delivered. I get to play on ...   Jul 20 2012, 04:58 PM
effutuo101   Half way through a 2004 VW steering swap. It is a...   Jul 20 2012, 05:02 PM
ruby914   Please excuse us McMark. jimsfolly, as I recall th...   Jul 20 2012, 10:12 PM
ConeDodger   The 240Z guys use mid-90's Honda motors and II...   Jul 21 2012, 07:07 AM
McMark   Differences: - The wiper linkage arm on the Bo...   Jul 22 2012, 10:42 AM
smj   - The bolts and drive shaft on the 914 motor are ...   Jul 22 2012, 04:13 PM
McMark   Here's a couple shots with the cover off. I n...   Jul 22 2012, 11:10 AM
kg6dxn   Great photos! I can really see all the dirt an...   Jul 22 2012, 11:38 AM
McMark   Stock 914 wiper motor looks exactly the same on th...   Jul 22 2012, 01:30 PM
9146986   If you can do the motor swap, and figure out how t...   Jul 22 2012, 01:52 PM
McMark   Here's an image from Kansas_914's build sh...   Jul 22 2012, 02:02 PM
McMark   More work, no benefit. It would work. But in par...   Jul 22 2012, 04:17 PM
smj   Fair enough. And thanks for sharing! This look...   Jul 22 2012, 06:07 PM
sixnotfour   How about a 911 motor 3spds   Jul 22 2012, 06:26 PM
shuie   Intermittent wipers would be cool. Is it any light...   Jul 22 2012, 09:41 PM
McMark   Much lighter. Funny, I almost weighed them. ;) ...   Jul 22 2012, 09:53 PM
76-914   Great info :thumbsup: After your finished you sho...   Jul 23 2012, 02:50 PM
Cupomeat   For those looking for intermitancy on thier wipers...   Jul 23 2012, 03:00 PM
Joe Owensby   How did this turn out? Anyone else use another ty...   Sep 14 2014, 06:00 AM
ClayPerrine   FYI... a 964/993 wiper motor assembly is almost a ...   Sep 14 2014, 06:38 AM
McMark   Well, 3.5 years after mocking this up, I actually ...   Nov 28 2016, 10:11 AM
McMark   Well, that was an easy install. No surprises at a...   Nov 28 2016, 01:22 PM
76-914   Smooth as butter. Great job Mark.   Nov 28 2016, 05:53 PM
porschetub   Thanks a lot Mark for taking the time to document ...   Nov 29 2016, 11:06 PM
skaravelle   Thanks a lot Mark for taking the time to document...   Apr 16 2017, 01:53 PM
ConeDodger   Oh boy... put it on the list. <_<   Nov 30 2016, 01:57 AM
Chris H.   Awesome. Mine move about 90% slower than those. ...   Nov 30 2016, 08:02 AM
porschetub   Awesome. Mine move about 90% slower than those. ...   Nov 30 2016, 11:56 PM
porschetub   I haven't picked mine up from the postal depot...   Dec 7 2016, 01:19 PM


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