Confirm understanding of lightweight mods

[Joesurf79]

Originally Posted by why?

there is no damper on the car, that is a myth. Any vibration issues are going to be tuned for rpm's that the engine cannot possibly hit. That is what internally balanced means.

Any car that is as heavily modified as you mentioned could have issues that have absolutely nothing to do with vibrations.

WRONG.
READ:
https://www.enginelabs.com/news/gues...rzwrx-dampers/

[mrg666]

Originally Posted by Joesurf79

WRONG.
READ:
https://www.enginelabs.com/news/gues...rzwrx-dampers/

You are right! Here is a picture showing the stock crank pulley with the "damper" layer between inner core and outer shell.

The picture is a screenshot from the following video.

Hope this case is closed and nothing left to argue. At least for me. I am ordering the Fluidampr today. I will start another thread to post my experience with it.

[86TOYO2k17]

Originally Posted by mrg666

You are right! Here is a picture showing the stock crank pulley with the "damper" layer between inner core and outer

Hope this case is closed and nothing left to argue. At least for me. I am ordering the Fluidampr today. I will start another thread to post my experience with it.

It never made sense to me ppl saying it’s not a dampener. Seems like a heavy overbuilt expensive pulley if it’s only purpose was to spin the belt. Feel like it would have came with a lighter cheaper one from factory. Seeing as how cost and weight dictate a lot of manufacturering/engineering decision.

Hope you write up a good review. Are you planning on doing any specific testing?

I have a fluidampr waiting to go in once my fensport pulleys show up and I get some free time hopefully in next few weeks. Probably do the the lightweight shorai battery at same time, got to stack those little gains together to make the butt dyno happier.

[mrg666]

Originally Posted by 86TOYO2k17

It never made sense to me ppl saying it’s not a dampener. Seems like a heavy overbuilt expensive pulley if it’s only purpose was to spin the belt. Feel like it would have came with a lighter cheaper one from factory. Seeing as how cost and weight dictate a lot of manufacturering/engineering decision.

Hope you write up a good review. Are you planning on doing any specific testing?

I have a fluidampr waiting to go in once my fensport pulleys show up and I get some free time hopefully in next few weeks. Probably do the the lightweight shorai battery at same time, got to stack those little gains together to make the butt dyno happier.

I wasn't planning to do a dyno. My main concern is reducing vibrations and I was only planning to use my butt-dyno for that I could do a couple 0-60 pulls or do a before-after virtual dyno while at it. I will be most happy if I see a smoother running engine. If I haven't made clear yet, my engine is sc'd with JRSC.

Edit: and I agree, stock crank pulley clearly has a dampener. It is not a single-piece metal design.

[86TOYO2k17]

Originally Posted by mrg666

I wasn't planning to do a dyno. My main concern is reducing vibrations and I was only planning to use my butt-dyno for that I could do a couple 0-60 pulls or do a before-after virtual dyno while at it. I will be most happy if I see a smoother running engine. If I haven't made clear yet, my engine is sc'd with JRSC.

Ah yeah, I didn’t know U SCed. Should at the very least add a little bit of reassurance. A lot of ppl note a much smoother idle and a better sounding engine in higher RPMs.

If u did do testing should do a 2nd or 3rd gear roll starting/stopping at same speed/rpm on before/after testing. To take out any traction and shift speed variables.

[why?]

Originally Posted by Joesurf79

WRONG.
READ:
https://www.enginelabs.com/news/gues...rzwrx-dampers/

Wow. You do realize you're sucking the genitals of someone trying to sell you something, right?

Everything in that article is total garbage and not worth the writer's time to write it.

That is literally a paid ad. Sad you suck in up without questions.

[churchx]

So, physic laws apply only when engine has turbo? And in 4 cycle ICE engine, unless it has turbo, firing doesn't twist/bend slightly crankshaft? And subaru, which adds up dampened crank pulley in all their unicorn-magic boxer engines, does wrong still supplying their engines with such making them more expensive with no real need? And FA engine, most distinctive feature of which is shaving down material to absolute minimum from wherever they could to lessen inertia of moving parts/reduce frictional and alike losses, is much stronger NA then mildly turboed EJ?
What i WAS arguing about, is to not learn from own mistakes but learn from experience/knowledge of pros at the field, and be reasonable/not go overboard with mods IF reliability still matters. If they say that it's ok with just LWFW or just LWCP but not both, as they seen them fail soon otherwise with both of them installed, why i need to kill my own engine to prove on internet that physic laws don't apply and thus they are lying?

[Joesurf79]

Originally Posted by why?

Wow. You do realize you're sucking the genitals of someone trying to sell you something, right?

Everything in that article is total garbage and not worth the writer's time to write it.

That is literally a paid ad. Sad you suck in up without questions.

You stated repeatedly and incorrectly the factory part wasnt a damper. Believe it or don't totally up you. But you're still wrong if you think its not a damper.

I enjoyed your physics based counter argument btw...wait no, you had **** gargling jokes. I don't blame you, it's about all you have left as the objective data you've been handed the other way is pretty insurmountable.

Lots of manufacturers sponsor articles touting their products virtues -That doesn't make the law according to newton any less valid

Thats not just for car parts either - when you grow up and get a real job (doubtful it'll be in engineering as math seemingly escapes you) you'll see. By that time perhaps you'll have grown a pair large enough to admit when you're wrong haha!

[86TOYO2k17]

Originally Posted by SuperTom

I'm on your side. My car definitely revs and responds quicker especially in the first 2 gears

Did you ever get stock fan shroud weight?

I just got my girl to buy the mishimoto for my bday maybe in next
month I’ll get that with my pulleys installed. And I’ll weigh stock.

Idk if it was listed at wrong price..
But 224.12$ shipped for the black one! Not even bad save some weight, free up space, and gain 400cfm.

[SuperTom]

Originally Posted by 86TOYO2k17

Did you ever get stock fan shroud weight?

I just got my girl to buy the mishimoto for my bday maybe in next
month I’ll get that with my pulleys installed. And I’ll weigh stock.

Idk if it was listed at wrong price..
But 224.12$ shipped for the black one! Not even bad save some weight, free up space, and gain 400cfm.

No that person got caught up moving or something. Id appreciate it greatly.

I'm not sure how much lighter the mishimoto could be since it still has a full size aluminum shroud vs. stock plastic.

If the mishimoto is lighter I may consider running it only with the passenger side fan also. Don't need the driver fan with NO AC plus it would take weight off the driver front (the heaviest corner of our cars)

[SuperTom]

Switched from Invidia Catted FP and HKS Legamax Catback. To Hooker Headers Blackheart Catted Resonated FP and Borla Catback. Gained 3mm more in flow and got lighter with no increase in volume and deeper tone.

Lost -2.25lbs on the FP
and -10lbs on the Catback
over stock

Actually 29.25lbs after tare of plate



NEW Vehicle WEIGHT ~2526.5 LBS

I still have seats to do soon!

[86TOYO2k17]

Originally Posted by SuperTom

No that person got caught up moving or something. Id appreciate it greatly.

I'm not sure how much lighter the mishimoto could be since it still has a full size aluminum shroud vs. stock plastic.

If the mishimoto is lighter I may consider running it only with the passenger side fan also. Don't need the driver fan with NO AC plus it would take weight off the driver front (the heaviest corner of our cars)

Fanshroud was on back order for weeks... finally coming this week. Busy for last few weekends of summer then the installs will begin. Still have my fluidampr and fensport underdrive pulleys to install, fanshroud, and my shorai battery comes
Today.
I read your diy Mount thread. It looks like you modified it again after?
Trying to make a solid mount that doesn’t require cutting the metal brackets idk if I have the tools for that.
Would you recommend the heat wrap? I think it makes sense for protecting the battery.

[SuperTom]

@86TOYO2k17


Im glad you bumped this I just got some Amazon bucks to use and was going to order the Mishimoto slim fan setup. I think I ll wait to see what kind of weights you come up with. Amazon lists 12lbs shipped so packaging will be part of that weight.


Realistically I would hope for maybe 3lbs for the total setup swap. Maybe another 3 lbs for losing the driver fan. But hey $250 for 6lbs loss off the nose is much cheaper than a carbon fiber hood.


I trimmed down the side legs of the Battery mount to only have a 1/2" lip. With the stock tie bar pushing down on it still not moving anywhere. A $20 Harbor Frieght cutoff wheel is all you need.


The heat wrap I just had extra after doing my oil pan with headers. But good insurance in my book.


I don't know if you follow my build thread but did a lot more weight reduction last week off from work.
Removed all the airbags since I was losing them with the new Seats and Steering wheel. (remove at your own risk)
Lost:
-2lbs Aftermarket steering wheel
-5lbs Passenger Airbag
-6lbs side curtain airbags
-36.5lbs NRG carbon Fiber seats & mounts
DOWN TO 2475lbs!! Without a gutted interior

[86TOYO2k17]

@SuperTom

Ok I’ll check that cutter out. Any tender from harbor freight work? Can just keep oem battery or shorai battery plugged in 24/7 until ready to use with no issue?

Nice! weight loss is getting crazy. Def not going as extreme as you, but should be at about -85lbs after battery. Maybe -90lbs with fan havnt officially calculated it yet.

After I install mods I have now, prob get the jdm under panels and transmission tunnel cover might add 5lbs but make the underside look real clean and add some good aero. Then I think I can justify a CF DSS to push me over -100lbs weight loss.

You gotten dynoed yet? Or done any 0-60 1/4mile or any other tests? Would
Be interested to see what your running with that much weight loss. -300lbs should be roughly 20whp equivalent.