Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

6 Pages V « < 2 3 4 5 6 >  
 Reply to this topicStart new topic
> 1974 914 Rust Repair Project
bbrock
post Apr 4 2020, 11:43 PM
Post #61


914 Guru
*****

Group: Members
Posts: 5,269
Joined: 17-February 17
From: Montana
Member No.: 20,845
Region Association: Rocky Mountains
QUOTE(sreyemj @ Apr 4 2020, 10:19 PM) *

I'll try that. The ospho bottle just says dry for 24hr and then paint, but I will definitely rinse first.


Yeah, I think they might have changed the directions and to be honest, I've done that on some suspension parts that I could easily repaint if things didn't work. I had no problem that way either. All of the competing brands of phosphoric acid I've used all said to rinse and lightly scuff off the residue like I described and all the guys who have been using Ospho for a long time say to do the same. So I'm not sure if the directions for Ospho were always just apply, wait, and paint or if they later decided that neutralizing the acid wasn't necessary. At any rate, I like the surface left behind after neutralizing and scuffing off the residue better. If you just leave it on, it can sometimes leave a slightly sticky coating and that seems like where you might get adhesion problems.

Great work on the car BTW! (IMG:style_emoticons/default/beerchug.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Superhawk996
post Apr 5 2020, 09:07 AM
Post #62


914 Guru
*****

Group: Members
Posts: 5,778
Joined: 25-August 18
From: Woods of N. Idaho
Member No.: 22,428
Region Association: Galt's Gulch
QUOTE(sreyemj @ Apr 5 2020, 01:36 AM) *


The rear suspension console has some welded repairs. This will be replaced after the long repair so I removed the engine shelf on the passenger side:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586065008.5.jpg)


(IMG:style_emoticons/default/headbang.gif) Scary stuff. I found braze in my suspension console.


Rant for previous abusers of these vehicles:

People -- this is the part that holds the wheel on the car for crying out loud. Were you really willing to trust your lives to that rusted metal and pooly welded (or brazed in my case) backyard fix? (IMG:style_emoticons/default/shades.gif)

OK - Done now.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
bbrock
post Apr 5 2020, 09:14 AM
Post #63


914 Guru
*****

Group: Members
Posts: 5,269
Joined: 17-February 17
From: Montana
Member No.: 20,845
Region Association: Rocky Mountains
QUOTE(Superhawk996 @ Apr 5 2020, 08:07 AM) *


(IMG:style_emoticons/default/headbang.gif) Scary stuff. I found braze in my suspension console.



Oh my! (IMG:style_emoticons/default/unsure.gif) (IMG:style_emoticons/default/yikes.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 8 2020, 10:53 AM
Post #64


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
I took a few steps forward and one back. I did weld a patch on the top of the long, but the inner layer of the long was more badly rusted than I had hoped. I used a wire wheel and blasted the edges, but there was still enough rust to contaminate the welds and I wasn't really happy with it. To correct this, I opened the long some more, and removed most of that inner lamination. I'll fabricate a piece and rosette weld it to the inside of the inner long.


Looks pretty good from the outside:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586364820.1.jpg)

Inside layer is badly rusted:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586364821.2.jpg)

Inside of the long with the worst rust cut out:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586364821.3.jpg)

Starting to fabricate the piece to reinforce the inner long:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586364821.4.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Superhawk996
post Apr 8 2020, 12:46 PM
Post #65


914 Guru
*****

Group: Members
Posts: 5,778
Joined: 25-August 18
From: Woods of N. Idaho
Member No.: 22,428
Region Association: Galt's Gulch
Yup,

Most people don't believe that these cars literally rust from the inside out. (IMG:style_emoticons/default/screwy.gif)

By the time you can see a pin hole on the front, the back is virtually gone.
User is online!Profile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 8 2020, 09:01 PM
Post #66


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
QUOTE(Superhawk996 @ Apr 8 2020, 01:46 PM) *

Yup,

Most people don't believe that these cars literally rust from the inside out. (IMG:style_emoticons/default/screwy.gif)

By the time you can see a pin hole on the front, the back is virtually gone.
For sure, this one had just a few pin holes and they were painted over. I'll probably stick an endoscope into the other long (driver's side) just to check for rust. No way ANY 914 is rust free unless you've made it that way.


New inner lamination, butts up to and will be welded to clean metal:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586401267.1.jpg)

Welded in:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586401481.1.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 10 2020, 02:39 PM
Post #67


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
Fabricating the piece for the outer long. Not sure why people say the outer long is the main source of strength?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586551156.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586551157.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586551157.3.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Superhawk996
post Apr 10 2020, 04:40 PM
Post #68


914 Guru
*****

Group: Members
Posts: 5,778
Joined: 25-August 18
From: Woods of N. Idaho
Member No.: 22,428
Region Association: Galt's Gulch
(IMG:style_emoticons/default/piratenanner.gif)

Keep going. The hours are endless but you're making great progress. (IMG:style_emoticons/default/cheer.gif)
User is online!Profile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 14 2020, 12:04 AM
Post #69


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
I'm hoping to drive this from Washington to Texas (moving to start residency) in about a month, so I had to speed things up and take fewer pictures. I had Tim's ACVW freshen up the 1.7L that was in the car, reasonable cost and it's no longer leaking copious oil. Door gaps have remained spot on. I'm tasting victory in the next few weeks.

Installed the heater tube from 914werke.com:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586844245.1.jpg)

Starting to weld the outer long:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586844246.2.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jaredmcginness
post Apr 14 2020, 07:26 AM
Post #70


...
***

Group: Members
Posts: 502
Joined: 12-June 19
From: Baltimore
Member No.: 23,209
Region Association: MidAtlantic Region
Really great progress. Having a little bit of PTSD because I just finished the repairs on this section on my '71. You reinforced that area a bit more than me, but I will be running a stiffening kit. Look nice.

Stay motivated, I'll be following!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 14 2020, 09:49 PM
Post #71


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
QUOTE(jaredmcginness @ Apr 14 2020, 08:26 AM) *

Really great progress. Having a little bit of PTSD because I just finished the repairs on this section on my '71. You reinforced that area a bit more than me, but I will be running a stiffening kit. Look nice.

Stay motivated, I'll be following!
I'm going to put the 914LTD kit on this, but I wanted the area to be as close to origional strength as possible.

After closing up the outer long, I put the final patch over the hell hole area. I used my inner layer (the new metal) to make tabs along the edge and then plug welded the new piece to the tabs. After that, I was able to hammer down the edges and weld the seams. The welds look scrappy because I was only doing short sections (and cooling with compressed air), but I'm really happy with how it welded up. On the rotisserie afterward, the car is MUCH stiffer.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586922550.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586922550.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1586922550.3.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
FourBlades
post Apr 15 2020, 06:33 PM
Post #72


From Wreck to Rockin
****

Group: Members
Posts: 2,054
Joined: 3-December 07
From: Brevard, FL
Member No.: 8,414
Region Association: South East States
More great work! (IMG:style_emoticons/default/beer3.gif)

John
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 17 2020, 11:40 PM
Post #73


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
More grinding away, literally. Removed the passenger jack mount, it will be replaced. I think the mount for the engine bar might be compromised too, at least there is rust behind it. I'm going to remove it and see how bad the rust is. Having a hard time finding a replacement piece, anyone know of a source?

Welds ground down over hell hole:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587188452.1.jpg)

Patching the firewall:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587188452.2.jpg)

"Rust free" from the outside:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587188452.3.jpg)

NOT rust free:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587188453.4.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 18 2020, 08:50 PM
Post #74


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
Getting ready to replace the suspension console. I used a 9/16th bolt and welded a quick bracket to locate the hole. Not sure this is the most reliable way to do it, but it seemed like a good idea at the time.

Bracket:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587264702.1.jpg)

Had to see, but there's a bit washer welded to other side that is keeping it flat:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587264636.1.jpg)

Cutting into the suspension console, gross!
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587264636.2.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 18 2020, 09:01 PM
Post #75


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
The inside longitudinal behind the engine bar mount and suspension console had been "bathed" in battery acid. This resulted in some severe pitting, but everything inside the long (based on several holes I poked through it) is rust free. I've already seen the inside of the long and fixed what needed fixing. I think for this area I will treat the rust/paint and add a 20ga sheet to the outside.

Suspension console (and engine bar mount) cut off:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587264951.1.jpg)

Found the soft spot on the inside of the long behind the engine bar mount and punched a screwdriver through it. The metal was thin in this spot, but the area behind is rust free:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587265281.1.jpg)

Engine bar mount, pitted, but solid:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587265282.2.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Tdskip
post Apr 19 2020, 07:04 AM
Post #76


Advanced Member
****

Group: Members
Posts: 3,686
Joined: 1-December 17
From: soCal
Member No.: 21,666
Region Association: None
Thanks for the updates, making great progress!

(Blocks of wood supporting the car make me nervous still)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 19 2020, 08:27 AM
Post #77


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
QUOTE(Tdskip @ Apr 19 2020, 08:04 AM) *

Thanks for the updates, making great progress!

(Blocks of wood supporting the car make me nervous still)

It's on a rotisserie, the blocks were to keep it flat.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587307574.1.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 20 2020, 11:16 PM
Post #78


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
I decided to cut out the piece of the long behind the motor bar mount after all. There were two spot where the metal was very thin (see picture above) and I wanted to be sure it was sound. It turns out that there was no rust behind the outer skin so an overlay piece probably would have been fine, but having lots of solid metal made it very easy to weld the patch in and eliminate the soft spots for good.

Area behind the outer skin, no rust at all:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587446174.1.jpg)

Patch being fit:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587446175.2.jpg)

These holes are a bit small, I opened them up for better welding:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587446175.3.jpg)

Ready to grind off the welds:
(IMG:http://www.914world.com/bbs2/uploads_offsite/i.imgur.com-23821-1587446175.4.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jaredmcginness
post Apr 21 2020, 06:00 AM
Post #79


...
***

Group: Members
Posts: 502
Joined: 12-June 19
From: Baltimore
Member No.: 23,209
Region Association: MidAtlantic Region
This progress is seriously awesome.

I like that idea for locating the suspension console. That is about the only part I didn't hit on my rebuild. This post makes it seem not as scary...

If I missed it, are you using a cutout console from another car, or a replacement piece?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
sreyemj
post Apr 21 2020, 08:54 AM
Post #80


Member
**

Group: Members
Posts: 87
Joined: 12-January 20
From: SA, TX
Member No.: 23,821
Region Association: None
QUOTE(jaredmcginness @ Apr 21 2020, 07:00 AM) *

This progress is seriously awesome.

I like that idea for locating the suspension console. That is about the only part I didn't hit on my rebuild. This post makes it seem not as scary...

If I missed it, are you using a cutout console from another car, or a replacement piece?

Replacement part.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

6 Pages V « < 2 3 4 5 6 >
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 5th May 2024 - 07:21 AM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...