carbon fiber doors, lose reinforcement beams?
 

I'm assuming that if I were to replace my OEM doors with Seibon carbon fiber ones that I would lose the reinforcement beams in the doors?

since the CF doors are skins, i doubt it. Contact Seibon to double check.

ikd when i was looknig to get CF doors for my TC you lost them....would not get them without cage....

I know this sounds ricey. But if the doors were to make you lose the beam...maybe look into someone who can do a carbon fiber skin on top of the oem door? Just an alternative thought

carbon fiber is to loose weight? why would you want to put carbon fiber skin over top of the metal door? defeats the purpose....I cant see the doors having the beam in them, once again defeats the purpose....Like i said when i was looking to get them for my TC i did some research and would advice against running this on the streets without a cage...

side impact would be horrid

As I stated, it was alternative if he doesn't want to lose the beam in the door. It's hard to justify putting a roll cage inside of a primarily street car. As nice as it would be, hard to justify.

then to me it would be hard to justify putting CF doors on a primary street car...if your going to do it, do it right and safe....

my turbo TC was my street and track car, it saw 5k miles a year if that so when i was looking to put CF doors on it was for a reason to ditch weight...my intetior was already gutted for the track and wouldnt risk going on the street without a cage and CF doors haha

^ +1

^+2 really unsafe

That was my goal: weight reduction. But if it's going to result in the loss of the beams, that's a no-go. What I really would like to do is replace the roof and moon roof with a carbon fiber one (eliminating the moon roof that I didn't want and is heavy high up on the car), but the only place I know of where I could get that is MazdaSpeed (they provide the carbon fiber panels to SpeedSource). They don't just sell to anyone, though.

sounds to me like you got the money....go to a place and have one layed over top of your roof as a mold and have it installed...Ive seen this process done on a couple eclipse...and like i said if you got the monety just do it right and put a cage in...Not sure if they make an RX8 bolt in cage...im not a fan of bolt in cages since to me once again defeats the purpose ha but would def add safety to CF doors...