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-   -   Seam Welding - integrity question (https://www.nopistons.com/2nd-generation-specific-17/seam-welding-integrity-question-66370/)

One320B 06-22-2007 06:07 PM

Before I say which side of the boat I'm on, I first wanted to see if first - have any of you done this, and second what are your opinions or thoughts on this?



If you have no clue what I'm asking about, thats fine - I'm just looking for anybody who has done this on an FC (I know people who have done this on MX-5s which has spawned a debate, lol)

banzaitoyota 06-22-2007 06:27 PM

Why are you seam welding?

Does the appropriate sanctioning body allow it?



Its a PAIN IN THE ASS



How are you going to ensure you dont "tweak" the unibody?





Most Seam welding was done in "spec" car BIG $$$$ Series with factory support after the chassis was acid dipped to reduce the weight

1Revvin7 06-22-2007 06:32 PM

Just get a tube chassis, I guess you've noticed how weak these cars are lol...

One320B 06-22-2007 06:33 PM

There are ways to ensure you don't tweak the unibody - it actually hasn't happened on the MX-5s that were done (possibly because there is less there, dunno)



I didnt say I was actually going to do it, but the sanctioning body allows this modification in an open class - so I'm looking into it. I wont be able to acid dip as I'm too far along to go back now unless I enjoy smoking cubans I lit w/ $100 bills, lol..



I'm on the fence in the debate which is why i was curious if anybody has done it... I was thinking of at least doing the front clip since it seems to be the weakest area. I could add bracing to the floor behind the drivers seat as well. That in conjunction with the 8pt cage and door bars should be plenty strong.



Keep the questions/comments coming though.. I'm curious...

One320B 06-22-2007 06:34 PM


Originally Posted by 1Revvin7' post='875907' date='Jun 22 2007, 04:32 PM

Just get a tube chassis, I guess you've noticed how weak these cars are lol...



Unfortunately, yes. lol...

One320B 06-22-2007 06:36 PM

Dont want to go tube chassis - i would just like a "happy medium" between a full body and a tube...

banzaitoyota 06-22-2007 06:41 PM

One of the MAJOR hurdles is getting the seam sealer out of the seam BEFORE welding

One320B 06-22-2007 06:50 PM

No kidding... I've had my time with that crap.



My biggest hurdle is getting it setup on a frame jig... My uncle thinks I can do the front clip just fine without having the car setup on a jig...



However, I cant do the firewall since it's already painted, but I mainly wanted to focus on the inner fenders, strut mount area, door and rockers... the rest will be fine IMHO...

banzaitoyota 06-22-2007 07:00 PM

IMHO: Do it all or do NOTHING!



Why? Now you are transfering more load elsewhere

j9fd3s 06-23-2007 04:11 PM

we used to bend our camber plates, theres a lot of forces at the strut towers!


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