Register Login
Shop4Parts - UK's largest online superstore for FIAT and Alfa Romeo parts
Reply
 
Thread Tools Search this Thread
Old 10-09-2021   #106
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by fiat500 View Post
Hi Seb. The floor was originally welded in underneath the thick reinforcement brackets at the rear and under the rear cross member of the floor.

It was originally placed on top of the front footboard. It was originally under the sills.

I think it was originally a one-piece floor which would include under the central spine. The floor would have been under the thicker metal of the tunnel. So I fitted it all like that. When welded in it is perfectly strong and stable.

Take your time and get every last scrap of rust, grease and underseal away from the weld area; even tiny specks or amounts of grease will make it a poor job. Your welder also needs to be a bit higher setting than normal.

Good luck.
The body is blasted, so there is not much grease and rust letf. But I hear you, will make sure.
Is it a spot welder you have used, or have you drilled and used a MIG? Thatīs what I have at hand anyway

Did you replace the last piece of the original floor from underneith the spine aswell? Better to weld the new floor directly to the spine, without old sheet metal inbetween I reckon.
Iīm thinking it would be smart to do while down there...
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Old 10-09-2021   #107
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
The body is blasted, so there is not much grease and rust letf. But I hear you, will make sure.
Is it a spot welder you have used, or have you drilled and used a MIG? Thatīs what I have at hand anyway

Did you replace the last piece of the original floor from underneith the spine aswell? Better to weld the new floor directly to the spine, without old sheet metal inbetween I reckon.
Iīm thinking it would be smart to do while down there...
On the car I've finished, the floor under the tunnel was good, so I left it and welded to it.
I don't have a spot welder and most of the welds would be hard to access. So I used puddle welds by drilling holes and welding through; this works out really strong.
Most of the welding can be done from above with the car sitting as normal. When you weld to the outer sills this way, it makes a neater job if you weld from the back of the flange of the floor.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by fiat500; 10-09-2021 at 09:29.
fiat500 is offline Reply With Quote Quote 
Old 14-09-2021   #108
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by fiat500 View Post
On the car I've finished, the floor under the tunnel was good, so I left it and welded to it.
I don't have a spot welder and most of the welds would be hard to access. So I used puddle welds by drilling holes and welding through; this works out really strong.
Most of the welding can be done from above with the car sitting as normal. When you weld to the outer sills this way, it makes a neater job if you weld from the back of the flange of the floor.
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Old 14-09-2021   #109
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
Seb, you can get proper spot-weld drills which leave the bottom layer of two welded sheets intact. For what you're doing, that isn't important. On most of it, just roughly cut the floors out leaving the welded edges, then grind the areas of spot-weld. Where the floor contacts those thicker plates at the back you can just use an 8mm drill and go right through the welds..you need the holes for later plug-welds.

At the central tunnel you need to think what you're doing. I cut the floor along the line of the flange as you need to keep the area under the tunnel still attached. I drilled a series of holes later for the welding.
Likes Raukstern liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

fiat500 is offline Reply With Quote Quote 
Old 15-09-2021   #110
Join Date: Apr 2021
Posts: 60
Thanks: 0
Trader Rating: 0
Canada 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
Sorry about the continous streem of questions
Whan you drill, do you drill through both or just the top one?
Iīve been experimenting with both options, but not sure whatīs the "right way" to do it.

/Seb
If your a tool junkie like myself and always looking for an excuse for more tools, check out the "Spitznagel Spot Weld Drill", i picked one up a few weeks ago to do the 500 body work, and its exactly the tool needed to do what we will all eventually have to do on these cars.
They can be used with the support back pc for doing seam or flange drilling, or it is removable to do drilling in harder areas.


There are also clones out there that do the same job.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides


Last edited by Bounding Bambino; 15-09-2021 at 02:10.
Bounding Bambino is offline Reply With Quote Quote 
Old 4 Weeks Ago   #111
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Seb,
I just noticed this image from the excellent Motobambino on Facebook. He's placed the floor above the tunnel flange. In my photo I placed it below...so both ways can work.
Attached Thumbnails
Click image for larger version

Name:	Motobambino floor.jpg
Views:	24
Size:	222.4 KB
ID:	220470   Click image for larger version

Name:	MAL_6055.JPG
Views:	26
Size:	5.31 MB
ID:	220471  

__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

fiat500 is offline Reply With Quote Quote 
Old 4 Weeks Ago   #112
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by fiat500 View Post
Seb,
I just noticed this image from the excellent Motobambino on Facebook. He's placed the floor above the tunnel flange. In my photo I placed it below...so both ways can work.
Excelent, thanks for sharing

Iīm expecting delivery of panels for most of the front end and inner & outer sills next week.
I think Iīll wait for the sills before starting to fit the floor. It allt goes togeather. Then Iīll see in the floor pan ends up over or under the flange

/Seb
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Old 3 Weeks Ago   #113
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

What do you do to protect the surfaces between to overlapping sheets, when you spot weld them togeather?
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Old 3 Weeks Ago   #114
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by Raukstern View Post
What do you do to protect the surfaces between to overlapping sheets, when you spot weld them togeather?
I didn't do anything, but most people say they use "weld-thru" primer. I found it affected the quality of my welds...maybe it works better with proper spot-welders.

In any case, the heat of mig-welding burns away a lot of what you've just sprayed on.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

fiat500 is offline Reply With Quote Quote 
Old 3 Weeks Ago   #115
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

Iīve heard people fill the gap with motoroil that seeps in and keeps the damp/rust out.
Ever heard about that?

.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Old 3 Weeks Ago   #116
Join Date: Apr 2017
Posts: 331
Thanks: 5
Trader Rating: 0
The Whitakers has donated!
United Kingdom 
Quote Originally Posted by Raukstern View Post
What do you do to protect the surfaces between to overlapping sheets, when you spot weld them togeather?
When I’ve replaced panels I pour a diluted primer down from the top and when you finish the top coat either side at least it has some protection.
Likes fiat500, Raukstern liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

The Whitakers is offline Reply With Quote Quote 
Old 3 Weeks Ago   #117
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by The Whitakers View Post
When I’ve replaced panels I pour a diluted primer down from the top and when you finish the top coat either side at least it has some protection.
....and then seal along all the joints using overpaintable, PU sealant.

If you used oil it will eventually drain away and evaporate and it will prevent any paint or sealant from adhering to the metalwork.
Likes Raukstern liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

fiat500 is offline Reply With Quote Quote 
Old 3 Weeks Ago   #118
Join Date: Apr 2017
Posts: 331
Thanks: 5
Trader Rating: 0
The Whitakers has donated!
United Kingdom 
Quote Originally Posted by fiat500 View Post
....and then seal along all the joints using overpaintable, PU sealant.

If you used oil it will eventually drain away and evaporate and it will prevent any paint or sealant from adhering to the metalwork.
Actually no I haven’t based on the fact they you can potentially seal in moisture doing that………never use oil tho unless it was a wax oil variant afterwards….
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

The Whitakers is offline Reply With Quote Quote 
Old 3 Weeks Ago   #119
Patinated Peter
 
fiat500's Avatar
Join Date: Mar 2005
Location: Nairn
Posts: 5,766
Thanks: 291
Trader Rating: 0
fiat500 has donated!
United Kingdom 
Re: Rauksternīs 500F -65 rebuild

Quote Originally Posted by The Whitakers View Post
Actually no I haven’t based on the fact they you can potentially seal in moisture doing that………never use oil tho unless it was a wax oil variant afterwards….
That might work ok on welded flanges which are never going to be subjected to water. But when you get into welding floor panels and anything within wheelarches I think it wise to use a sealant. There is no danger of trapping moisture on a newly welded joint....the heat of welding will see to that.
Likes Raukstern liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

fiat500 is offline Reply With Quote Quote 
Old 1 Day Ago   #120
Join Date: Apr 2020
Location: Visby, Gotland
Posts: 96
Thanks: 0
Trader Rating: 0
Sweden 
Re: Rauksternīs 500F -65 rebuild

So guys, Iīve finally got some time over to get started on the repairs.

To be able to weld in the new floor, I first have to repair this badly corroded corner, that on top of that, had been poorly rapaired before aswell.

After cutting away the bad parts and cleaning it, i fabricated the first piece och this restoration

Didnīt quit get to the weld it in place last night, but tomorrow...

Feels good to be on my way
Attached Thumbnails
Click image for larger version

Name:	20211019_181604.jpg
Views:	11
Size:	2.21 MB
ID:	220994   Click image for larger version

Name:	20211019_182655.jpg
Views:	7
Size:	1.87 MB
ID:	220995  

Click image for larger version

Name:	20211019_190151.jpg
Views:	9
Size:	2.06 MB
ID:	220996   Click image for larger version

Name:	20211019_203735.jpg
Views:	8
Size:	2.26 MB
ID:	220997  

Click image for larger version

Name:	20211019_215509.jpg
Views:	8
Size:	2.31 MB
ID:	220998   Click image for larger version

Name:	20211019_220904.jpg
Views:	8
Size:	2.37 MB
ID:	220999  

Likes fiat500 liked this post
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Raukstern is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(G) 500F Rebuild tjmra 500 (Classic) 93 16-05-2020 23:55
(T) 65' 500F engine rebuild cdeorio 500 (Classic) 30 03-02-2017 17:56
(G) 500f rizzo308 500 (Classic) 1 08-06-2014 09:04
(G) My new 71 500f Indyspecracer 500 (Classic) 6 30-03-2013 02:26
Any more 500F out there? my500Ftoy Newbie Central 10 12-03-2007 18:30