Confirm understanding of lightweight mods

[SuperTom]

Originally Posted by firekat

I am going the FI direction. I also was considering weight reduction, mostly to keep the original balance of the car. My first thoughts were of course the battery, either going lightweight and/or relocating. I didn't get a chance to check weights but thought about the hood - carbon vs stock. I would want the carbon painted to match as I am not a ricer.

I was thinking of the Fluidampr but quite honestly did not see in the testing documentation a marked change, mostly it was different, with no gross changes in vibration from stock. My manner of thinking is changing rotational weight is potential vibration nightmare - and changes to drivability for a DD. Commentary by those with direct experience to a Fluidampr would be welcomed

A couple of other options could be lightweight starter/alternator? Do they even exist for this car?

In any case I don't think that I could reduce the weight enough to balance out the installation of FI.

I'll just see how much the installation changes the character, if at all, before I do anything.

Spare tire removal? After having lived with run-flat tires on a Mini, no way would I ever do that again. Sure you could Slime it, but take this into consideration; the current state of roads here in the States are getting so bad that when you do get tire damage, a can of Slime isn't going to fix it. Remember also that with the low profile tires you run on this car your more apt to get catastrophic tire failure than just a nail.

I have one other weight reduction program that I have always been working on. Eat less, exercise more.

In your case to take weight off the front to compensate for the gain of the FI you have
Lightweight battery
AC delete
Empty windshield washer delete
Front bumper beam removal or replace with lighter ones are out there
Chase Bays brake boost elimnator

[new2subaru]

Originally Posted by SuperTom

In your case to take weight off the front to compensate for the gain of the FI you have
Lightweight battery
AC delete
Empty windshield washer delete
Front bumper beam removal or replace with lighter ones are out there
Chase Bays brake boost elimnator

Tom, maybe on a track car but not a street car.

I'm all for lightweight mods but not at the price of safety.

[SuperTom]

Originally Posted by new2subaru

Tom, maybe on a track car but not a street car.

I'm all for lightweight mods but not at the price of safety.

Just giving him more options.


I don't have that mod but according to Chase Bays up to 80% of braking is stock like. Its that final 20% slam on the brakes that requires more effort.


https://www.chasebays.com/collection...minator-subaru

[new2subaru]

Originally Posted by SuperTom

Just giving him more options.


I don't have that mod but according to Chase Bays up to 80% of braking is stock like. Its that final 20% slam on the brakes that requires more effort.


https://www.chasebays.com/collection...minator-subaru

I was under the impression you lose ABS? I'd be curious to drive a car with this mod. I've driven plenty of car with manual brakes, and let's be honest, they suck lol

OP The stock hood is lighter than a carbon hood.

I'd love to do a rewire on this car. There's a shit ton of harness there...

[86TOYO2k17]

Originally Posted by SuperTom

Im all about tweaking every ounce of power out of these things but It still seems like a lot of work for 1.6 hp

in terms of bang for buck its def pretty low on the list, but i'm swapping out my stock pulley for the fluidampr one of these days, and probably going to do the alt/water pulley at same time. so it wont be that much extra work.

I'm at the point in my build where i cant expect to get much in return for my $$ unless i go FI. Which is something i want to do eventually down the road but not atm.

Right now i'm just having fun and learning more about my car, how to mod/work on it while making it as quick as possible NA.

Then if/when i go FI it'll make it that much better. NA car running 15.5sec puts on SC and drops to 14sec, NA build running 14.5sec puts on SC prob running lower 13s. So i don't view anything as a waste really.

[Spuds]

Originally Posted by new2subaru

I was under the impression you lose ABS? I'd be curious to drive a car with this mod. I've driven plenty of car with manual brakes, and let's be honest, they suck lol

OP The stock hood is lighter than a carbon hood.

I'd love to do a rewire on this car. There's a shit ton of harness there...

You know, if you don't need the dome and trunk lights, that might be .5 lb of wiring and fixtures right there...

Reminds me of some very expensive equipment that was made too heavy for the intended application because when it was designed the CAD model didn't include any of the wiring...

[Dr. BRZ]

I have a 2013 limited brz and it weighs 2485lbs. I am able to beat cars 100whp more than me easily. I also can beat cars with more hp than that and also turbo twins. I make 205whp. It's great! ��

[new2subaru]

Originally Posted by Spuds

You know, if you don't need the dome and trunk lights, that might be .5 lb of wiring and fixtures right there...

Reminds me of some very expensive equipment that was made too heavy for the intended application because when it was designed the CAD model didn't include any of the wiring...

The engine harness is probably 25lbs overweight. One day... *SNIP*

[SuperTom]

Originally Posted by 86TOYO2k17

in terms of bang for buck its def pretty low on the list, but i'm swapping out my stock pulley for the fluidampr one of these days, and probably going to do the alt/water pulley at same time. so it wont be that much extra work.

I'm at the point in my build where i cant expect to get much in return for my $$ unless i go FI. Which is something i want to do eventually down the road but not atm.

Right now i'm just having fun and learning more about my car, how to mod/work on it while making it as quick as possible NA.

Then if/when i go FI it'll make it that much better. NA car running 15.5sec puts on SC and drops to 14sec, NA build running 14.5sec puts on SC prob running lower 13s. So i don't view anything as a waste really.

I get it eventually I will be running out of NA mods hence the weight reduction route

[SuperTom]

Originally Posted by Dr. BRZ

I have a 2013 limited brz and it weighs 2485lbs. I am able to beat cars 100whp more than me easily. I also can beat cars with more hp than that and also turbo twins. I make 205whp. It's great! ��

That's fkin awesome I am so close to where you are.

I just ordered Ace350 delicious tune should get me right around 200whp on 93 octane.

Putting in my seats w/buddy club sliders will get me to 2500 even. The ACe headers are 5lbs lighter than my UEL then I will be at 2495!

Still looking at lighter fan setup, Hollow sway bars. and lighter catback than my HKS legamax.

[Dr. BRZ]

Originally Posted by SuperTom

That's fkin awesome I am so close to where you are.

I just ordered Ace350 delicious tune should get me right around 200whp on 93 octane.

Putting in my seats w/buddy club sliders will get me to 2500 even. The ACe headers are 5lbs lighter than my UEL then I will be at 2495!

Still looking at lighter fan setup, Hollow sway bars. and lighter catback than my HKS legamax.

Hell yeah man!
I have an additional 30lbs to take off.
My final set weight will be at 2455lbs.
After i reach that goal, I'll be adding nitrous to the set up. I'll still be under 2500lbs 😁

[86TOYO2k17]

Originally Posted by SuperTom

That's fkin awesome I am so close to where you are.

I just ordered Ace350 delicious tune should get me right around 200whp on 93 octane.

Putting in my seats w/buddy club sliders will get me to 2500 even. The ACe headers are 5lbs lighter than my UEL then I will be at 2495!

Still looking at lighter fan setup, Hollow sway bars. and lighter catback than my HKS legamax.

Do you know what the stock fan shroud weighs? and what the stock fan shroud CFM is?
Been thinking about getting the mishimoto fan shroud says 7.5lbs at 2300CFM. Figure if i do underdrive water pump pulley maybe upgrading fan shroud would balance out the cooling a little bit, and bonus weight reduction?

[churchx]

86TOYO2k17: IIRC fan working is governed by ecu tune and fans can be tuned to switch on more often/for longer periods of time there, even without any hardware upgrades.
EDIT
click

[86TOYO2k17]

Originally Posted by churchx

86TOYO2k17: IIRC fan working is governed by ecu tune and fans can be tuned to switch on more often/for longer periods of time there, even without any hardware upgrades.
EDIT
click

Yeah, but depending on CFM a new fan would just be more efficient as well as i could see the stock fan being something like 12-15lbs, as the mishimoto is a bit thinner and weighs 7.5lbs.

Which is why i am interested if anyone knows stock fan CFM + weight?

I think i read something about stock fan being about 1850 CFM but cant find it again. and have no idea the weight. but 400+CFM and 5+lbs weight reduction could be a good investment after other easier mods have already been done.