C70 subframe brace

Post by **Sveedy** » 08 Apr 2023, 09:10

So there is one in my local junkyard, but I'm wondering if it really brings anything to the party. Convertibles usually have beefed up undercarriages due to the fact that they don't have a roof to hold thing stiff. So does installing the brace really help on a sedan, or wagon ?

Post by **scot850** » 08 Apr 2023, 09:47

It will be a subjective test. You would have to drive your car and try to feel how it responds in corners. Then fit the brace and try again. I have read articles on some who have fitted it and they seem to believe it stiffens the front end and reduces body roll. I would suggest that if you improve the front end then you may have to consider the back too. Not a big recommender of IPD for most things these days, but their rear sway bar is actually worthwhile if you are doing this. There may be other brands out there too.

Neil.

Post by **abscate** » 08 Apr 2023, 11:08

17 HP boost at least , measurable on the butt-Dyno

Post by **matthew1** » 08 Apr 2023, 12:02

Another test would be more of a practical nature: park with a front wheel up on a curb and test all four doors for opening/closing and catching while they do. Then test again with the sub frame installed. P80s were too flexy as they came from the factory floor. Help in this area is a good thing.

Post by **Sveedy** » 08 Apr 2023, 12:26

^ Oh I like that idea !

Post by **matthew1** » 08 Apr 2023, 12:30

My 854's front doors would catch hard with one wheel on a curb. My strut tower brace helped, but it was putting band aids on bullet holes, in the end.

Post by **scot850** » 08 Apr 2023, 13:28

Do you want a C70 brace if I come down to CO to see my brother in the fall? Maybe you will get your 850R by then!!

Neil.

Post by **matthew1** » 08 Apr 2023, 21:18

Let's meet either way... the brace I'll pass, I don't want it because I don't know when I'll get my future R.

Post by **scot850** » 09 Apr 2023, 08:29

Hopefully one day!!

We will meet up for sure this time around!

Neil.

Post by **rguzz** » 09 Apr 2023, 19:11

No down side to the brace if it's a pic-n-pul item, sometimes it's hard to work underneath in those places though. I have one, 855, it's a minimal improvement but like everything else it depends on the condition of the rest of the suspension. My "new" Boge/Sachs shocks are soft, springs are old, etc. I'm going for a re-do.