Give me your knowladge..., 914 crossbrace inbetween 911 a-arms Options

[SirAndy]

QUOTE (Aaron Cox @ Nov 23 2005, 10:39 AM)

uh you posted that, its answered and the you post again LOL

(IMG:http://www.914world.com/bbs2/html/emoticons/av-943.gif)

[brant]

Trev,

I'd try to assess how much (if any) flex your getting on the front mounting points. We didn't want to add a brace for weight purposes, but had cut out so much of the firewall (at the back of the cell) that we perceived some actual flex......

It really may not be a functional bar according to many.
but we used a very light material to lessen the impact of adding 1 more bar.

brant

[andys]

QUOTE (SirAndy @ Nov 23 2005, 09:18 AM)

QUOTE (rdauenhauer @ Nov 23 2005, 09:50 AM) Under what conditions does the "FLEXING" occur? like me in the car, up on the lift, at HPH, bleeding the brakes, brad asking me to turn the front wheels to the other side (of course wheels were off) and him yelling: WTF? you could see the aluminium cross member flex (twist), right then and there, no load on it whatsoever ... that's why i went back to the steel cross member. maybe i got a bad one, maybe not. i wasn't going to take any chances. just a few ounces of weightsavings at a point where weight has the least impact (close to the ground) ... i'd rather be on the save side on this one. but hey, i'm sure you got *PLENTY* of "imperical evidence" to prove me and brad wrong! right? (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) Andy

So the suspension was at full droop when you witnessed this? Any idea if this still occurs with the wheels on the ground?

Though it seems unlikely to me that the crossmember from a heavier and more powerful car would do this, I bow to experience. That said, perhaps the 914 crossmember is a structural part to the unibody where as the 911 unit is not. Maybe there's more there than meets the eye?

I have both, but am considering the steel version only because it has provision to bolt on the protective pan.

Andys

[SirAndy]

QUOTE (andys @ Nov 23 2005, 11:44 AM)

Maybe there's more there than meets the eye?

yes, full drop, no wheels attached. turned the steering-wheel until i hit the stop and when i applied some more force to the steering wheel at the stop, the aluminum cross member was (very obvious, visually) twisting ...

now i don't know if it's supposed to do that or if i had a bad one (inspected it later, no cracks, looked good) but it was enough for me to go back to the stock steel crosssmember ...

that's all. just good 'ole observation ...
(IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) Andy

[Brad Roberts]

They flex in a 914. You can argue all you want. I have seen people install them in their 914's and not make any brackets for the back bolt holes (support) Not good.


B

[Rough_Rider]

Cheers Brant,

The PO cut the entire floor pan out, gone nothing left. Then pop rivited a stainless or aluminium sheet which the cell is bolted too.

his next solution was to get a 1/4" thick metal stock & bolted it too what appear to be oem a arm cover plates. Whole thing weighs 7lbs.

I'm stripping the trunk now to fix up all the rust & re-weld, just wanted to see what i'd need to put back (IMG:http://www.914world.com/bbs2/html/emoticons/smash.gif)