expanding foam into subframe and chassis???

[gofaster_s13]

It's a drift car, the shell will most likely be thrashed before rust becomes an issue, a lot of the expanding foam is fire retardant the proper stuff is used as a fire barrier around pipes and ducting in buildings and isnt toxic when burned. It is a cheap, cost effective way of very noticeably increasing the stiffness of a car.

[git]

No offence but dont try to defend using expandin foam ha just do the.common modification a cage! Simples

[pt_y2k]

My sills in the 86 are filled too...

[podge]

My sills in the 86 are filled too...

makes it easier fill the rot holes wit filler lol

[skelly]

Its supposed to add structural rigidity while addi g very little weight spoon do it to there track cars i had d old tuning factory integra and it was done to dat

[gofaster_s13]

No offence but dont try to defend using expandin foam ha just do the.common modification a cage! Simples

Do both

[B&G Extreme Drifting]

jaysus lads theres good response with this question but its kind of a half half situation some lads are dragging 1way & others the other way HARD TO KNOW REALLY. Do any of the PRO drivers do this..I heard alot do it in formula D & in japan. i dunno i dunno
cage is in stacks upon stacks of cash ago, 1st ting ya do really

[will_c]

makes it easier to fill the rot holes wit filler lol

i like this answer, im off to b and q :P

[Seamie tc]

half of the cams that came in from england where fill with foam.

[Diesel-Dick]

YouTube - Mythbusters AB foam prank