Hi

i have the 4p RACE ROLL BAR, and as far as i understand it has to be weld in .

have you guys just weld it direcly to the chassi?

here in sweden ive been told that i cant do that.. i have to have a extra plate that takes up the pressure over a bigger space and weld that extra plate to the chassi.. and then bold and weld the roll bar to the plate.


how have you done?

 

the double plate slightly larger is key in thin chassis areas cause in an accident situation the chassis will just shear if the plates are the same size....

are there racing specs out there where you can check if welding is allowed or preferred over bolting in.......also the racing spec organization rule book will tell you minimum plate thickness and material required as well..

similar to what we have here - SCCA rule book?
-J

 

thats the thing... we have different rules for different kind of racing

ex rally= ONLY weld

track racing= weld and bolt

24H racing = only bolt


and im not going to race in any proffesional way.. just trach days for fun.. so i just want the roll bar to be able to hold me in my 4p harness

 

Well then i would weld and bolt.......so that way the officials wont send ya to the spectators section when you get tech inspected...

Make sure to stay in specs when purchasing bolts and plate thickness and materials.

-J

 

well.. i guess i have to do that then...it just sucks to bend that extra plate to fit ..

 

I think you should do a ton of searching.......there are a lot of pictures on threads here where you can see close ups of that area.........and you can see where others have reinforced that area with nice cut to fit plates....

-J

 

i searched but couldnt find pics where it showed...nobody has cut out the carpet as mutch as clumpsy me hehe

 

keep searching........search build threads too....let me see what i can find..

 

Look at 3rd and 5th pic here:

https://my350z.com/forum/autocross-r...re-i-come.html

keep searching.........
-J

 

yes i found that thread but since it wasnt the same roll bar /doesent sit on the same spot i didnt think it was relevant for me....that build is waaay more serious then mine

 

use the same concepts at the mount points your talking about......add plates etc..

 

allright... alot more job then i thought..

i would like to know how other autopower users have done it on their 350Z..hope somebody will answer.

 

if i remember right, they just tell you to drill holes and install bolts......but thats weak structure there..........best to add plates, distribute load, etc..

-j

 

better safe then sorry..always.. thanks jason