How do you lose weight on the X?
^ ^^i did kinda this above
I have Artisan Exhaust
KW V3 coil overs
Gram light rims
Toro R888's tires
No crash beam's
Empty trunk
Small battery
With full tanks of gas my car is under 3300 LB.
But i have a GSR.
i hope i didnt forget something.
I have Artisan Exhaust
KW V3 coil overs
Gram light rims
Toro R888's tires
No crash beam's
Empty trunk
Small battery
With full tanks of gas my car is under 3300 LB.
But i have a GSR.
i hope i didnt forget something.
The EVO X isn't light, esp. the MR:
Initial weighing of our 2008 EVO X MR. This is with a completely full tank of fuel but the spare + jack removed. The Subwoofer can be removed for -16.4 pounds, and another ~75 pounds of fuel would be removed for autocross use, so that makes race weight ~3520 pounds.
Weight for EVO X GSR with full tank of fuel. Lose 75 pounds for race fuel load (autocross use) to get to around 3450 pounds
For race use, all of this needs to come out:
Stock wheels are heavy, even the "lighter" EVO X wheel.
Factory EVO MR 18x8.5" wheel and 245mm Advan tire, 46.8 pounds. Wheel alone is over 21 pounds.
Factory GSR wheel and tire = 48.2 pounds
Of course buy an aftermarket downpipe and such, but you can lose even more if you have a lightweight after-cat exhaust built (with thin wall 3" tubing):
This set-up went from 45.1 pounds to 23.8 pounds. We're making another iteration that will have a removable rear muffler section to lose 10 more pounds (it was way too quiet).
Bye bye fogs!
3 pound drop, but more importantly it unblocks coolers on both sides
A well made set of coilovers is always a weight savings, some of which is unsprung weight:
Cheers,
Initial weighing of our 2008 EVO X MR. This is with a completely full tank of fuel but the spare + jack removed. The Subwoofer can be removed for -16.4 pounds, and another ~75 pounds of fuel would be removed for autocross use, so that makes race weight ~3520 pounds.
Weight for EVO X GSR with full tank of fuel. Lose 75 pounds for race fuel load (autocross use) to get to around 3450 pounds
For race use, all of this needs to come out:
Stock wheels are heavy, even the "lighter" EVO X wheel.
Factory EVO MR 18x8.5" wheel and 245mm Advan tire, 46.8 pounds. Wheel alone is over 21 pounds.
Factory GSR wheel and tire = 48.2 pounds
Of course buy an aftermarket downpipe and such, but you can lose even more if you have a lightweight after-cat exhaust built (with thin wall 3" tubing):
This set-up went from 45.1 pounds to 23.8 pounds. We're making another iteration that will have a removable rear muffler section to lose 10 more pounds (it was way too quiet).
Bye bye fogs!
3 pound drop, but more importantly it unblocks coolers on both sides
A well made set of coilovers is always a weight savings, some of which is unsprung weight:
Cheers,
kinda wierd the BBS only 1.4 lb lighter then a Enkei. specially for the money it cost the BBS.
Former Sponsor
Joined: Aug 2008
Posts: 114
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From: Dallas, TX
But as I said before - going to good coilovers will net you a loss in weight. We just installed some AST EVO X struts the other day:
EVO X MR Bilstein strut and OEM spring + top mount = 19.4 lbs
EVO X AST 4200 front strut with Vorshlag camber-caster plate and Hyperco spring = 13.1 lbs
That's almost 13 pounds on the front end alone, for the pair.
mitsu made the MR to use new two-piece rotor construction to reduce weight. (The 2-piece disc is 2.9 pounds lighter per wheel 11.6 lbs in just different rotors why is it that the fancy automatic get the cool toys The MR model is also equipped exclusively with Bilstein shock absorbers and Eibach springs guess it is the only way to sell them sorry for the rant just tired of seeing the automatic in most of the test and comparsons seems like there are really pushing hard to get them moving but anyway my point 11.6 lbs lighter for better rotors
nobody mentioned this- If you are getting light weight rims pay attention to how much the tires weigh- total up the wheel+tire combo weight when selecting rims and tires, just to see what I mean... a lot of times the difference in tire weight can be as much or more than your stock wheels vs. aftermarket. Lower the rotational mass, it has more significant impact that simply removing weight in general from elsewhere on the car. lighter weight brake rotors were mentioned too, and same concept applies for those.
usually replacing items with expensive carbon fiber items is not as cost effective as adding power- remember, its all about good power to weight ratio that makes your car FAST. Take weight of car and divide it by horsepower. Adding 20 hp makes your car faster than removing 100 lbs for instance.
Former Sponsor
Joined: Aug 2008
Posts: 114
Likes: 0
From: Dallas, TX
nobody mentioned this- If you are getting light weight rims pay attention to how much the tires weigh- total up the wheel+tire combo weight when selecting rims and tires, just to see what I mean... a lot of times the difference in tire weight can be as much or more than your stock wheels vs. aftermarket. Lower the rotational mass, it has more significant impact that simply removing weight in general from elsewhere on the car. lighter weight brake rotors were mentioned too, and same concept applies for those.
L: Stock BBS 18x8.5" and 245mm Advan = 46.8 pounds. R: Enkei 18x10.5" and 265mm AD07 = 48.5 pounds
Wheel alone was 21.6 pounds.
In this case the extra 2 pounds of wheel/tire weight was mostly in the tires, but it still dropped lap times by over a second (peaks of 1.4g lateral grip - not bad for 180 treadwear street tires). If we could get lighter wheels in this size we'd have them.
the RPF1 is lighter... but the offset stinks (+15). Cheaper too 
I oh so scientifically (bathroom scale) weighed my 18x10.5 RPF1s to be around 19#.
19.7 according to the specs: http://www.enkei.com/spec_charts/RPF1.pdf
I oh so scientifically (bathroom scale) weighed my 18x10.5 RPF1s to be around 19#.
19.7 according to the specs: http://www.enkei.com/spec_charts/RPF1.pdf