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Discussion Starter · #1 ·
getting stuck
getting all these bars to fit in the small space i am working in. tubes are getting crazy angles and what not!!!!!
im wondering if this is legal :huh:

dont have much room for all these cross bars in there!

 

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7.86 @ 8800DA 3365lb 275s
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looks like it should be ok sfi doesn't say hase to be at a certain angle. if your tranny crossmember is the correct diameter and wall thickness it can be counted as the center section forward crossmember (#6C) if you look at the 25.5 spec section VI. #6 (page 7) the last paragraph on that page explains it.

hope that helps,
Justin
 

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Discussion Starter · #4 ·
looks like it should be ok sfi doesn't say hase to be at a certain angle. if your tranny crossmember is the correct diameter and wall thickness it can be counted as the center section forward crossmember (#6C) if you look at the 25.5 spec section VI. #6 (page 7) the last paragraph on that page explains it.

hope that helps,
Justin
maybe i need ot reread the book! it did not say anything about it being removeable...or did it :smt102



heres more of what im talking about

the upper side of the pic is the way the sfi book wants it. the bar cant be no father back then 16" from where the outriggers for the cage are. but im just find to see if the way id like to do it is legal.
 

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The guy who techs around here wouldn't accept your way. He wants the center X and the diagonals done per the specs. RM
 

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The guy who techs around here wouldn't accept your way. He wants the center X and the diagonals done per the specs. RM
Talked with 3 different Chassis Cert guys when doing this, 25.2 with a Non Removable Trans Tunnel doesnt really exist, so this is what was decided on.
 

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maybe i need ot reread the book! it did not say anything about it being removeable...or did it :smt102



heres more of what im talking about

the upper side of the pic is the way the sfi book wants it. the bar cant be no father back then 16" from where the outriggers for the cage are. but im just find to see if the way id like to do it is legal.
hereis what the SFI books says on the removable crossmember

If used as a removeable rear tansmission mount the Center Section Forward Crossmember #6C may be bolted with one 3/8 diameter Grade 5 bolt per side with .125 steel double gusseted brackets (two per side) this method requires a close tolerance sleeve through the center section forward cross memeber #6C to reinforce each bolt


Just put your outer diagonals (#39) into the point where the removable crossmember is located and you will be fine, the center X as you have it drawn will be fine also.

(I had to go back and read the removable crossmember part to)
 

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Why did you cut the floor out for 25.5 using all this bracing? We just build 1-5/8 moly subframes turned up on the ends welded to each end of unibody(mustangs). The hoop and front down bars come through the floor and turn into the frame connectors. If running ladder bars all you do is attach pickup to each subframe. Of coarse you need the Door x, floor bar, etc...
 

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Discussion Starter · #13 ·
well with the stock floor you dont need all those bars. and since we are cutting the floor out to put all aluminum in, it just made sence to cut the whole floor out. maybe thats why:p
 

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getting stuck
getting all these bars to fit in the small space i am working in. tubes are getting crazy angles and what not!!!!!
im wondering if this is legal :huh:

dont have much room for all these cross bars in there!

That cross member is fine we've done about 20 that way and never had a cert problem!

The 4 bolt flange are nice and we use them on stock floor 25.2's
 
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