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> Frame rails...
Jeroen
post Aug 15 2004, 02:55 PM
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Didn't get to work on the 914 as much as I hoped over my vacation, but still made some good progress over the last couple of days...

Frame rails in the engine comp. are stripped naked
They still need some minor detailing here and there and the "hell holes" still need to be cleaned, but most of the hard work is done

Tonight I welded the rear shock towers to the frame rails
Quite a gap to fill...


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Jeroen
post Aug 15 2004, 02:56 PM
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Welded up...

(IMG:style_emoticons/default/welder.gif)


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Jeroen
post Aug 15 2004, 02:58 PM
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Top of the drivers side still needs to be welded, will do that later this week

Oh, the rust brown is just grinding dust. It's only visible in the pics (IMG:style_emoticons/default/blink.gif)


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Jeroen
post Aug 15 2004, 03:00 PM
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Last pic for now...

I wanted to buy a better welding machine, but we also needed a new couch for the living room (IMG:style_emoticons/default/biggrin.gif)


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watsonrx13
post Aug 15 2004, 06:01 PM
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Damn, the trunk is GONE and the engine shelf... (IMG:style_emoticons/default/biggrin.gif)

Looking good.... (IMG:style_emoticons/default/cool_shades.gif)
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seanery
post Aug 15 2004, 06:15 PM
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Gotta have room for that 917 motor! (IMG:style_emoticons/default/w00t.gif)
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Gint
post Aug 15 2004, 08:13 PM
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Good lookin work Jeroen.
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Brad Roberts
post Aug 15 2004, 11:56 PM
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Good job Charlie Brown (IMG:style_emoticons/default/aktion035.gif)

Perfect pic to show people WHY our cars split the outer frame rail in the inner fender. I have a hard time explaining to people that the frame rails end in front of the shock tower. This will make life much easier. Thanks for the pics.


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Lou W
post Aug 16 2004, 12:04 AM
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Wow, I never realized how those towers are attached to the frame rails. Thank you for the pictures. Brad, Now i know what you were talking about in one of the previous threads. You were explaining about the weak area's and how some of the frame stiffening kits don't really address the problems. Good stuff (IMG:style_emoticons/default/clap56.gif)
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Brad Roberts
post Aug 16 2004, 12:14 AM
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You got it.

The GT stiff kit pieces that go inside the fenderwell are worthless. They weld onto a cover for the frame rail. Cut the cover off and install the stiff kit... then it would actually do something. You have to tie the frame rail to the shock tower better than the factory did. These pics show how the frame rail is only attached on front side of the shock tower. Over time the shock tower tries to rip away from the frame rail (Jeroen listened and welded it all up)



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jgiroux67
post Aug 16 2004, 12:24 AM
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Is there a way to do this without cutting out part of the trunk? Also, do you have to take the engine out to do this?
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brant
post Aug 16 2004, 08:36 AM
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Damn.. nice job Jeroen.

I plagerized some of your ideas from the past and recently just got my car back from paint with the same seam welding...

I cut our access hole with a plasma torch to this same seam... welded it, and then welded in a bracket that tied the two parts together. I was able to put the cover back on and weld it closed again... ground down the welds and had the paint shot, so that you can barely even tell that cavity was opened up...

wish I had a digital camera (again)

brant
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Joe Ricard
post Aug 16 2004, 11:13 AM
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Damn day lae and a dollar short. Wish I would have seen this before I did all my welding of the hell hole.

You know while you are in there stuff.
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914werke
post Aug 16 2004, 11:36 AM
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I confused (IMG:style_emoticons/default/wacko.gif)
w/o seeing the original back eng. wall in place Im not understanding.
Are you saying the seam shown as unwelded in the first pic (rail to tower ) is how the factory left it? No spots nuthin?
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Brad Roberts
post Aug 16 2004, 11:43 AM
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It has small tabs that are folded over and spot welded to the front of the shock tower.


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Jeroen
post Aug 16 2004, 05:07 PM
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Maybe this pic helps you get a better idea...

Here you can also clearly see that the firewall is actually double walled
(hence, no need for one of those rear shock braces that you see sometimes)


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Eric_Shea
post Nov 16 2004, 04:44 PM
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I'm going to revive this thread from August.

I looked at a bare tub today and it looks as though the longitudinal is spot welded to the shock tower along that seam that is clearly visable in Jeroen's 1st picture. It looks as though it is spot welded from the inside. I was able to look up into the shock tower and see spot welds where the longitudinal would terminate.

Question 1:

Is this correct? Has anyone seen inside the longitudinal at this point? Brad? Brandt? Jeroen?

Question 2:

That being the case, are you seam welding this area for strength?

Question 3:

That not being the case, did the factory forget to weld the longitudinal to the shock tower in this area?

Question 4:

Brandt, any further info on your procedure?

Thanks in advance!

E.
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brant
post Nov 16 2004, 05:24 PM
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Eric,

1) Actually I have not looked inside a longitudinal at this point... I've looked at it from the outside (both the inboard and out board outsides)

2) Yep.. that was my intent. Seam welding for strength.
The tube frame cars all run the roll cage to the top of the shock tower for the same reason. The top of the shock tower wants to pull up from the longitudinal and shears the factory spot welds...

3) I think the factory spot welded it a little bit, but with the BIG high rate springs the race cars use these days the factorys welds are not adequate.

4) I just seam welded the inside (from within the spring tower cavity) and then opened up the cavity on the engine side and seam welded the outside from there....

I'm not allowed to run my roll cage to the suspension points.. thus the reason I tried it this way.

Also, I think my one picture on my thread that shows the seam welding inside the tower... That picture only shows one half of the inside, and I went all the way around on the inside (but didn't get a good picture of it...)

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Gint
post Nov 16 2004, 05:27 PM
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(IMG:style_emoticons/default/agree.gif) Please? This is for my tub.

Hey Eric,

Brant posted this in his thread:

QUOTE(brant Posted on Nov 16 2004 @ 08:22 AM)
Jeroen,

this one is for you.
I mentioned this previously, but I used a plasma cutter to open the frame cavity and do some welding inside to brace the rear towers..... Then closed it back up.

You can see my welding seam.. Its kinda a big triangle (about 6inches long):

(IMG:http://www.914world.com/bbs2/uploads/post-2-1100618551.jpg)




Here is the other picture Brant referred to of the inside of the shock tower.



QUOTE(brant Posted: Nov 1 2004 @ 09:18 PM)

Here is the seam welding on the rear towers inside..

Jeroen, I mentioned this once a while back...  I don't have to tell you not to over look this area.  1/2 of the rear seams are inside.  You can't see them due to all the body filler the factory puts in there.  you can grind that crud out with a wire wheel and then get to them.

I don't have a pic of it, but I also cut open to access the frame end in the engine bay.  Right where it butts up to this tower.  We welded that and then closed the access portal back up.. Welded it closed and you can barely tell after a bit of grinding

here she is from beneath:

(IMG:http://www.914world.com/bbs2/uploads/post-2-1099369131.jpg)


This post has been edited by Gint: Nov 16 2004, 05:46 PM
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Gint
post Nov 16 2004, 05:30 PM
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Thanks Brant!

Don't stop there.

Jeroen, interested in hearing your perspective on this as well. In fact anyone who has been in this area, please let us know your thoughts about strengthening it.


    This post has been edited by Gint: Nov 16 2004, 05:33 PM
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