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> what's the proper undercoating for a 914-6?
siverson
post Sep 19 2013, 03:20 PM
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I tried extending a thread on the originality forum, but not much luck there:

http://www.914world.com/bbs2/index.php?showtopic=152778

Anyone have photos of an original or 100% properly restored 914-6 showing the rear fender wells and bottom side of the rear trunk? It seems like black undercoating is never right as it was just applied by the dealers or ports (or something), and besides it's ugly.

So, it seems like the good options for these areas appears to be:

1. metal -> primer -> body color paint

2. metal -> primer -> grey PVC undercoating

3. metal -> primer -> grey PVC undercoating -> body color paint

Or ?

-Steve
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Eric_Shea
post Sep 19 2013, 03:28 PM
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I thought it was conclusive from that thread what was stock on a six.

#2 with some overspray for a #3 effect.

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SirAndy
post Sep 19 2013, 03:49 PM
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QUOTE(Eric_Shea @ Sep 19 2013, 02:28 PM) *
#2 with some overspray for a #3 effect.

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siverson
post Sep 19 2013, 04:01 PM
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So the bottom of the trunk floor should primarily be grey, with over spray just from painting some areas. Like this... ?

Body color:

- upper engine compartment
- lower engine compartment
- front & rear fender wells
- rockers

Grey with overspray:

- bottom of rear trunk (above transmission)
- bottom of floor (i.e. the majority of the bottom of the car)
- bottom of front trunk floor (around the a-arms)

Is that right? I just don't think I've ever seen a photo of a 914 or 914-6 that was primarily grey on the bottom... ?

-Steve
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siverson
post Sep 19 2013, 04:05 PM
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And to confirm, this is never done:

> 1. metal -> primer -> body color paint

There should be grey PVC everywhere, and then some areas are painted. Right?

-Steve
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sixnotfour
post Sep 19 2013, 05:05 PM
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pvc--
under rear trunk
under front trunk
wheel wells x4
engine compartment gets some= overspray

color--
everywhere
lower half of engine gets overspray

every six I have owned has the black undercoat--thin
floor bottom
trunks bottom
wheel wells x 4
engine bay lower half overspray



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siverson
post Sep 20 2013, 02:43 PM
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Great, thanks.

Is the "grey PVC" still available? Or what's the best modern replacement?

-Steve
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siverson
post Sep 20 2013, 05:10 PM
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Just saw this answer on the bird board:

http://forums.pelicanparts.com/porsche-911...-undercoat.html

-Steve
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Dave_Darling
post Sep 20 2013, 08:09 PM
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Don't forget #4: leaked-out oil.

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rick 918-S
post Sep 20 2013, 08:48 PM
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I just posted over on the bird. 3M makes a gray rocker guard in aerosol. 08889 is the product #. It matches the small texture of the factory coating pretty well. I have some I will be using on Sandy's car as a touch up to the factory looking gray coating under the car and in the wheel wells.
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rudedude
post Sep 21 2013, 08:01 AM
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Wurth has a special gun for their product that works really well if you are doing large areas
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McMark
post Sep 21 2013, 09:46 AM
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I have this seam sealer gun from Wurth and haven't found the correct combination of settings the replicate the pebble finish quite as perfectly as I would like to.

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sixnotfour
post Sep 21 2013, 09:55 AM
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911 have the pebble finish ..914's PVC is pretty smooth with orange peel and sags here and there.
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Garland
post Sep 21 2013, 11:22 PM
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QUOTE(sixnotfour @ Sep 21 2013, 09:55 AM) *

911 have the pebble finish ..914's PVC is pretty smooth with orange peel and sags here and there.


I agree, after cleaning off the black underside of my 72 - 4, this is what I found.
Underside:
Attached Image
Wheel housing:
Attached Image

Floor pan:
Attached Image
Under body:
Attached Image
Paint close And the dove gray primer:
Attached Image
Seam sealer
Attached Image
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OmaPossu
post Sep 22 2013, 06:54 AM
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I have asked Porsche Classic for help to have correct painting to my six. It took 3 months to have answer and it was: Please tell your 914:s VIN.

And now waiting again..
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puffinator
post Sep 22 2013, 06:57 AM
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QUOTE(Garland @ Sep 22 2013, 01:22 AM) *

QUOTE(sixnotfour @ Sep 21 2013, 09:55 AM) *

911 have the pebble finish ..914's PVC is pretty smooth with orange peel and sags here and there.


I agree, after cleaning off the black underside of my 72 - 4, this is what I found.
Underside:
Attached Image
Wheel housing:
Attached Image

Floor pan:
Attached Image
Under body:
Attached Image
Paint close And the dove gray primer:
Attached Image
Seam sealer
Attached Image

What did you use to clean off the black underside stuff?
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Garland
post Sep 22 2013, 07:58 AM
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Patience and lots of time!

First I used a putty knife

Second a razor blade

Then lots of shop towels and body solvent.

The wheel housings with all the seams, welds and edges where the undercoat guy tried so hard to cover was the biggest challenge.

Now do I paint, or just toich up and seal with body wax? Almost hate to cover it up, but want to protect the bottom.

Thinking paint bottom before color to gain this effect.

The original body color is silver as seen in the wheel housings. Looking into color match for underbody primer color.

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rstover
post Sep 23 2013, 08:49 AM
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QUOTE(OmaPossu @ Sep 22 2013, 07:54 AM) *

I have asked Porsche Classic for help to have correct painting to my six. It took 3 months to have answer and it was: Please tell your 914:s VIN.

And now waiting again..



Is there a classic Volkswagen site where this primer could be found? Attached ImageAttached Image
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Ferg
post Sep 23 2013, 11:39 AM
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John do you have a thread on that car? Looks fantastic! (IMG:style_emoticons/default/drooley.gif)
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Garland
post Sep 23 2013, 08:52 PM
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QUOTE(Ferg @ Sep 23 2013, 11:39 AM) *

John do you have a thread on that car? Looks fantastic! (IMG:style_emoticons/default/drooley.gif)



Soon I will start posting, I started this one 10 years ago, and stalled for about 8, but now back on track.
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