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Old 06-03-2003, 12:21 PM   #1
Farfrumwork
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'85 EJ25 Syncro Westy

Question Whats up with light weight Bumper Beams

Does anyone have a definitive answer about a change in structural integrity of a car that uses LW bumper beams??

Are these sold as race-only items (i.e. they are "safe", but your bumper may suffer much more damage in a low speed collision than with the stockers)?
If they are used on rally cars, I can't see how they would be more dangerous than the heavy ones... a rally car is much more likely to hit something than mine!

Also, who sells them? and how much weight do they save (~80lbs rings a bell)? and, I guess this is important, do they fit a '98 Legacy?

Thanks,
Chad (trying to put his 3090# legacy on a diet )
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Old 06-03-2003, 01:44 PM   #2
GTBGUY
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Farfrumwork - IIRC there aren't any LW bumper beams for the Legacy. You could try building a new F&R LW bumper beam though.

Seriously, it's worth keeping the stockers if you're driving it on the street mostly.

Some insurance Co's may void your insurance if you have some safety equipment removed.

If you really want to take some weight off the car, perhaps you should consider getting a light weight battery, CF Hood & trunk etc.
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Old 06-03-2003, 05:05 PM   #3
nySulli
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the battery would be a good option, their are 15 lb batteries out there for 90 bucks that are higher cca then stock, stock battery is 32 lb
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Old 06-03-2003, 05:31 PM   #4
joefocker20
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Heres some stuff you can do

Pulley - 4lbs
flywheel - 15lbs
battery - 19
Spare 26.5
Jack 4.5
Tools 1.5
Spare Nut 0.5
Trunk Lining 3
Fire Mat 0.5
Pulley Cover 0.5
DRL Module 0.5
Interior Trunk Handle 0.5
Passenger Side Weight 1.5
Tow Hook 5
Rear Mats 2
Trunk Side Liners 2.5

How much weight do you want to save?
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Old 06-03-2003, 06:14 PM   #5
Farfrumwork
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Smile

Thanks for the advice all....

GTB-GUY - I thought they might NOT make LW beams for the 'ol Legy, and yes, Insurance might bend me over if the right circumstances arose... On to other things.

****** - well, I'm not real set on a specific amount. Don't want to make it unliveable just a bit more responsive to inputs.

so far I have done the following (estimations only):

smaller battery.....-7
Brullen catback.....+5(?) that thing is STOUT
MRT header..........-6
snorkus................-5
pulley cover..........-0.5
LW pulleys............-6
Kuhmo MX's..........-12 (from what I hear)
(and NO extra crap floating around car)
total so far...........~32lbs

but, I am thinking of doing these freebies soon:
front subframe weight......-5
toe hooks (if removeable).-5
misc gaurds......................-5

I'd like to pull the spare/jack/etc - lots 'o weight - but don't want to be stranded somehwere (especially with the family). And more rattles would kill me so no removing sound proofing...

future purchases:
Rota subzero 16x7".....-24 (wow)
exedy flywheel.............-13

-both of these are rotational as well to give more effect than static weight...

So after I can get the high dollar items... next winter maybe..
total........................-84lbs

That would be cool, and put me right at 3000lbs. oh yeah, I'm a hefty 155lbs myself - so no weight savings there...

-Chad
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Old 06-03-2003, 09:10 PM   #6
joefocker20
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Wow, I need to get some Rotas.. The only thing is with a 16 I'll still have an unbelieveable amount of wheelgap I think I'll pick up rims in the spring so I can kill the Kuhmos I have now and put winter tires on the stock rims in the fall. I plan on completely making my car unliveable, so as soon as I get a garage, it will be on.
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Old 06-03-2003, 10:47 PM   #7
GTBGUY
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Farfrumwork - don't worry about taking our the spare tire & jack etc... there's a little something called "Prestone Tire Jack" works well (other then a full tire blow-out or sidewall puncture).

Also, the front lower A-arms can be replaced w/ forged aluminum pieces

You could also go with the iON/AP BBK which will save you another ~14lbs/corner.
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Old 06-04-2003, 02:37 AM   #8
Kostamojen
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Stock seats weigh quite a bit, lighter seats can save ~50lbs supposedly.
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Old 06-05-2003, 04:48 PM   #9
Subie Gal
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re: lw beams...
not only would your ins co have a field day with you...
(deny claim, drop you like a bad habit)

but if you were to injure someone?
you could be sued for using a 'race only/off road only'
product on a street car...

these things will crumple at 5mph, let alone 50.
is the few lbs you'd save really worth it?

any subaru dealer can get them.
i typically refuse to sell them.
just not safe...
jamie www.subiegalracing.com
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Old 06-05-2003, 10:26 PM   #10
mattjb
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Quote:
Originally posted by Subie Gal
re: lw beams...
not only would your ins co have a field day with you...
(deny claim, drop you like a bad habit)

but if you were to injure someone?
you could be sued for using a 'race only/off road only'
product on a street car...

these things will crumple at 5mph, let alone 50.
is the few lbs you'd save really worth it?

any subaru dealer can get them.
i typically refuse to sell them.
just not safe...
jamie www.subiegalracing.com
_____________________________________
So is that the same deal with the 'lightweight' bumper beam i'd need to put a RS bumper on my L?

-MB
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Old 06-06-2003, 12:14 PM   #11
Subie Gal
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Quote:
Originally posted by mattjb


So is that the same deal with the 'lightweight' bumper beam i'd need to put a RS bumper on my L?

-MB
right.
but you dont NEED a lw bumper beam...
for about $100 more you can get the true RS heavyweight OEM beam...

is $100 worth someone's life? or your own?
just something to think about...
extreme... i know.... but if something were to happen?? i'd feel more than awful if i was responsible for selling the part that caused someone life to change dramatically...

cheers Jamie www.subiegalracing.com
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Old 06-06-2003, 03:35 PM   #12
CosmoTheCat
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What you guys are calling "weights" are there for a reason. Do you really think Subaru would throw a 5 pound piece of steel in if it didn't help to make the vehicle safer? Keep in mind that they're trying to make a somewhat sporty car as well as excede CAFE requirements.

That "passenger weight" is (if it's the one I'm thinking of) supposed to help protect the passenger from becoming 1 with the dashboard. There's a similar piece under the driver's side of the dash.

While you're at it, take the air bags and SRS computer/sensors out. That'll save a few pounds.
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Old 06-06-2003, 04:55 PM   #13
Opie
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Lightbulb

Quick counter point on the lightweight bumper beams...the reason U.S. vehicles are required to have 2.5mph bumpers is to help insurance companies keep their repair costs down, it has more to do with economics than it does safety.

The crash integrity of your vehicle is not determined by the bumpers, it is determined by the integrity and design of the vehicles safety cage and it's ability to absorb the forces of an impact. An Impreza subjected to a crash test, such as the 45mph offset head on test, would fair the same with or without the bumper installed, as it is the cage that provides the protection to the occupants. The bumper protects the lights and hood/trunk (ie: More expensive for the insurance company to replace) parts from the daily assortment of minor incidents ever so present in the US.

Are they legal to use on the roads, probably not. Can your insurance company give you a hard time if you have them installed, probably so. Are they unsafe, pretty doubtful.
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Old 06-06-2003, 05:08 PM   #14
BOY
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Opie, you make an excellent point but I'd like to add a pseudo-counter... I just got in a small "fender bender" (quotes added b/c the fender was wrinkled, bumper cover cracked,headlight, foglight and cover, grill gone...) and honestly, I think the damage may have been localized to the existing body panels due to the OE bumpers. The LW beams are freaking foil... if you've never felt one imagine this, your computer's keyboard and mouse weigh almost as much as the lw bumper beam. I would betmy deductable that the lw beams would've resulted in damage to the a/c condensor, radiator, and perhaps to the engine itself (if the rad fans had been pushed back). I'd love to drop weight but there is no way I'd use the beams on the street, dedicated track car, trailer queen, sure go for it.
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Old 06-06-2003, 05:16 PM   #15
TheDonPerignon
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Old 06-07-2003, 01:51 AM   #16
mattjb
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Quote:
Originally posted by Subie Gal


right.
but you dont NEED a lw bumper beam...
for about $100 more you can get the true RS heavyweight OEM beam...

Excellent! Just what I wanted to know.
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