Full length vs shorty sub frames

[9746Cobra]

I put MM FL sub frame connectors on my '03. They definatly helped but the car still had squeaks and rattles. The FL subs probobly weighed over 30lbs too.

I need to get sub frames for my '96. I'm wondering if the weight of the FL's is worth it or if the shorter type subrames that weight half as much and just support the chassis where it's weakest would be sufficient.

9746C

 

[wheelhopper]

Go full length. The full lenght subs are not that much more weight. They are also an item that should be able to be installed correctly and pretty much forgotten about, so you might as well get the best you can for your money. The cut through the floor types are just not worth the extra cost in my opinion, unless you're building the ultimate race car.

 

[steve121]

I had through the floor sub frame connectors installed in my R for $350 at a local chassis shop. They did a great job and it made a big difference in the stiffness of the car.

 

[gcassidy]

What do you plan to do with the '96?

 

[sct12]

I had a set of mid length and removed them for full length, I felt a huge difference. It is very worth it for the full length.

 

[9746Cobra]

What do you plan to do with the '96?

Daily driver plus a couple open track days a year.

9746C

 

[9746Cobra]

I had a set of mid length and removed them for full length, I felt a huge difference. It is very worth it for the full length.

Removed them? Were they welded in?

Thanks for the feedback.

9746C

 

[99 GT]

MM FLSFC's FTW!!!

(i think the abbreviations were an overkill haha)

 

[racer726]

The weight's in the right place with the full length subs, down low and not too far from mass center... they are also thinner walled I believe than the shorty subframe connectors, so it's not that much difference in weight.

If it still bothers you to add weight, take some weight off the car from an out front and up high location if you can, and you'll feel better about it (any of the following if you haven't already... light weight hood, chop the center out of the heavy plastic Grill Opening Reinforcement aka GOR, AC Compressor elimination, aluminum flywheel, swap cast headers to tubular headers, go with coilovers...) Just trying to help.

 

[gcassidy]

My favorite weight reduction (out front and up high)...

 

[wheelhopper]

^ ditto. Also very easy and relatively cheap.

 

[TPSMak]

The best ones to get are the in the floor subs but you can't go wrong with MM full length subs

 

[CAMELEON]

For the 96 Cobra, pay close attention to the instructions. The transmission crossmember needs to be modified ( at least mine did ).

 

[9746Cobra]

For the 96 Cobra, pay close attention to the instructions. The transmission crossmember needs to be modified ( at least mine did ).

I thought that was for the '98's?

 

[gcassidy]

I shouldn't think there's be a difference between the '96, '97 & '98. What is it? :shrug:

 

[9746Cobra]

I shouldn't think there's be a difference between the '96, '97 & '98. What is it? :shrug:

I think in '98 the crossmember is in a slightly different location. There is a additional set of instructions for installing the MM subframes on '98's.

9746C

 

[gcassidy]

Hmmm...I wonder why? Did the '96/'97 have a T-45, and the '98 a T-5?

 

[9746Cobra]

Hmmm...I wonder why? Did the '96/'97 have a T-45, and the '98 a T-5?

Nope, all had T45's.