View Full Version : Welding question

11-09-2013, 02:11 AM
On my toyota 4 runner frame should i stitch weld my front box/reinforcing plates or bead weld fully around them , I hear a few different things on this , anyone have any thoughts on this ?

11-09-2013, 09:21 AM
The idea of a stitch is if it cracks at the weld the crack will take longer to spread
It also keeps the heat down IMO
On a toy frame I would weld it completely but not in one pass
Stitch weld it do a couple welds go to the other side of frame
Do a few welds moving around your plate
Idea is to let it cool a bit between welds or the heat will bend the frame
Guessing your doing front frame stiffener plates

dirka dave
11-09-2013, 10:52 AM
Rule of thumb is when you boxend a tube, or whatever, leave the corners open. about the same as the thickness of the materiel.

for example, if your welding 3/16 plate into the end of your frame, stop welding 3/16 from each corner.

if youre worried about dirt getting stuck behind there, fill the corners with sillicone.

its the same when you weld in gussets, or brackets.

most people weld the whole edge, its actually weaker.

11-09-2013, 11:28 AM
Actually the reason for not fully welding a box or tube is to allow water to train
And dirka is corect on not welding the corners on your box plates
That's why most properly cut boxing plates have rounded ends
And no welds straight across frame rail =|= like that is bad
=<>=this or this =><=for a boxing plate and a angle cut like this =\=for section ing a frame

11-09-2013, 01:24 PM
Ya I'm plating the front of the frame to help it from getting twisted by the 383 , and also to add strength to the motor mount area

11-09-2013, 02:08 PM
might as well just pour salt in the frame now and get it over with. lol

11-09-2013, 02:47 PM
might as well just pour salt in the frame now and get it over with. lol

At least he has a frame to rot crumpled beercan waggon

11-09-2013, 04:23 PM
Frames mint, zero rust, just making sure it's going to hold up to the motor going in