foaming chassis your thoughts.

290 Views 10 Replies 4 Participants Last post by TomsMR2, Feb 1, 2006

rdyzz

Discussion Starter · Feb 1, 2006 (Edited)

i've read alot on the board about this subject, it seems to almost be a blacksheep subject as everyone doubts it or worries that the frame can't be welded if damaged. i also read alot on other sites also and theres alot who say that foaming increase the rigidity 45%-even 300% stiffen then a stock chassis. and if the frame does get damaged to the point of needing to re-weld it the car is basically gone (for a street use car). its structural integrity will be questioned. and besides for a 10+ yr old car it will be considered totalled by those who we pay each month or every 6 months.

why I'm thinking about this is i want my car to be as good a street car as possible. a stiffer chassis will improve all aspects of the car especially the handling and stiffness of springs. also i've considered a cage but really don't think it will be safe riding with a cage for daily use.

anyone happy with the results of feel very strongly against it.

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TomsMR2

· #2 · Feb 1, 2006

it adds alot of weight..

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rdyzz

Discussion Starter · #3 · Feb 1, 2006

does it add that much weight. i was under the impression of it just adding 40-60lbs.

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mr2by4

· #4 · Feb 1, 2006

A properly installed cage is not a liability in a street car from safety stand point. You can use paddsing if you are concerned. The cage will also add weight.

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TomsMR2

· #5 · Feb 1, 2006

a full cage is DEFINATELY a safety issue in a street car. ive bonked my head on my cage just working on it in the garage.. reeling in pain. i cant imagine hitting it in an actual crash.. padding or not.

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DavidV

· #6 · Feb 1, 2006

rdyzz said:
i've read alot on the board about this subject, it seems to almost be a blacksheep subject as everyone doubts it or worries that the frame can't be welded if damaged. i also read alot on other sites also and theres alot who say that foaming increase the rigidity 45%-even 300% stiffen then a stock chassis. and if the frame does get damaged to the point of needing to re-weld it the car is basically gone (for a street use car). its structural integrity will be questioned. and besides for a 10+ yr old car it will be considered totalled by those who we pay each month or every 6 months.

why I'm thinking about this is i want my car to be as good a street car as possible. a stiffer chassis will improve all aspects of the car especially the handling and stiffness of springs. also i've considered a cage but really don't think it will be safe riding with a cage for daily use.

anyone happy with the results of feel very strongly against it.

Done it. Very happy with the results (foam and cage both).

-- DavidV

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DavidV

· #7 · Feb 1, 2006

TomsMR2 said:
it adds alot of weight..

Nah. 10 pounds if that... and that was the highest density foam (Bellco).

Info here: http://pagebank.sun-inet.or.jp/~bellco/essh.htm

-- DavidV

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rdyzz

Discussion Starter · #8 · Feb 1, 2006

thanks david. also david seeing as you have experiance with foaming the mr2 what are the parts that you would recommend to foam. the only ones i can think of right right of the back of my head are. by the doors. and where the seat belt mounts.

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DavidV

· #9 · Feb 1, 2006

rdyzz said:
thanks david. also david seeing as you have experiance with foaming the mr2 what are the parts that you would recommend to foam. the only ones i can think of right right of the back of my head are. by the doors. and where the seat belt mounts.

Side sills only. You could try the A-Pillars, but I doubt it would be worth it as there is not enough open space in there. Not sure about the rest, since you need a sealed cavity to do it.

-- DavidV

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rdyzz

Discussion Starter · #10 · Feb 1, 2006

thanks again. david i'll contiune to look more on the car but hopeully this benifits the tein flex, H&T bushing and trd sways. oh can't wait for autocross and road race season.

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TomsMR2

· #11 · Feb 1, 2006

DavidV said:
Nah. 10 pounds if that... and that was the highest density foam (Bellco).

Info here: http://pagebank.sun-inet.or.jp/~bellco/essh.htm

-- DavidV

.. oh wow, i thought the weight was ALOT more than that.. its been a while since anyones had a foaming conversation

thanks for clearing that up..

damn at that weight i think ill look into it as well..

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