Confirm understanding of lightweight mods

[tomm.brz]

Expect you didnt posted 2+2 logs with same conditions to compare things in a good way
You posted an acceleration from a random speed to another random speed (which 90% of the people can t reach with a single geae because you are basically the only. One in this forum to have a longer FD rather than a shorter, FD that objectivelt sucks more torque compared to a shorter one)
And asked us to make the same log saying that your car feels like a 280hp car
Or am i wrong

[SuperTom]

Originally Posted by Lantanafrs2

I would love to see acceleration numbers once you put the header on it. Weight loss you're talking about is worth 20 or so hp by itself.

I'm not a drag racer as I generally don't like to put hard launches on a clutch. Don't have a real accurate way of testing 0-60 but I suppose I could use some sort of GPS app just to get an idea.

Yeah old school rule of thumb was 100lb = 10hp. I have 234lbs lost so ~23hp gain along with the headers/tune over stock. In theory of course!

[86TOYO2k17]

Originally Posted by SuperTom

I'm not a drag racer as I generally don't like to put hard launches on a clutch. Don't have a real accurate way of testing 0-60 but I suppose I could use some sort of GPS app just to get an idea.

Yeah old school rule of thumb was 100lb = 10hp. I have 234lbs lost so ~23hp gain along with the headers/tune over stock. In theory of course!

GPS apps are pretty inaccurate/inconsistent unless you buy some type of external gps device specifically for testing. Personally, I think the best way to get the most accurate/consistent testing would be to film your speedometer and do a 40roll or 3500rpm in 3rd to whatever the top of third is to negate the traction and shift speed variables. Or at least a 5roll to 60+ to eliminate the traction variable.

[86TOYO2k17]

Also doing some quick math. If a car is 2800lbs with 200hp = 14-1 ratio. Losing 100lbs makes it a 13.5-1 ratio or 1.037 better ratio. 200 x 1.037 = 207.4hp this is at the crank.

You’d have to do the equation yourself based on your base to current weight, as well as your baseline whp to new whp or baseline crank to new crank to get the exact hp equivalent ratios for weight reduction.

[Dr. BRZ]

My weight to power ratio is 12.1 compared to stock at 16.8.
I am measuring whp not crank hp. Its a very much different car when i drive both mine and my gf's stock brz.
Crank hp, weight to power ratio is 10.3 (mine) and stock is 13.8

[SuperTom]

Originally Posted by Dr. BRZ

My weight to power ratio is 12.1 compared to stock at 16.8.
I am measuring whp not crank hp. Its a very much different car when i drive both mine and my gf's stock brz.
Crank hp, weight to power ratio is 10.3 (mine) and stock is 13.8

I know you said you've done a lot of weight reduction as well do you have a list of things you've. Just curious in case I missed something that could be beneficial to my build.

That's what its all about weight to power. If you cant get anymore power go lighter

[Turbo]

Originally Posted by SuperTom

I removed front and rear bumper beam and same time

I'm curious if you considered making your own light weight replacement?


I want to open up the lower grille to increase airflow through the rad and oil cooler, but when I pulled the grill out I found it's actually the bottom of the bumper beam is in the way blocking the airflow. Put it back together and figured I'd either TIG something up or FAB it out of carbon/fiberglass composite.

[SuperTom]

Originally Posted by Turbo

I'm curious if you considered making your own light weight replacement?


I want to open up the lower grille to increase airflow through the rad and oil cooler, but when I pulled the grill out I found it's actually the bottom of the bumper beam is in the way blocking the airflow. Put it back together and figured I'd either TIG something up or FAB it out of carbon/fiberglass composite.

No I'm fine without them. Japan version of the car doesn't have them its a US 5mph thing

Originally Posted by Kostamojen

Low speed collisions will probably cost more to repair, but bumper beams don't change how effective crumple zones are on a chassis in high speed accidents. Cars in Japan and other countries have had little to no bumper beams for quite a long time, the primary purpose for bumper beams in the US is to reduce insurance costs in those pesky 5mph tests.

[nikitopo]

Originally Posted by tomm.brz

Expect you didnt posted 2+2 logs with same conditions to compare things in a good way
You posted an acceleration from a random speed to another random speed (which 90% of the people can t reach with a single geae because you are basically the only. One in this forum to have a longer FD rather than a shorter, FD that objectivelt sucks more torque compared to a shorter one)
And asked us to make the same log saying that your car feels like a 280hp car
Or am i wrong

Lol again the same arguments from the same people. I provided at that time a complete log file and anyone could compare whatever range of speeds he liked even with a shorter FD. Of course, you ignore that a file was posted and make again an argue for the sake of the argument. And the same discussion continued at that time even when I converted the data with a road dyno application to whp (which takes in account the FD, car weight etc.) just to make everyone's life easier, when I provided logs on 3rd gear instead of 2nd gear and so on ...

So, do you still want to be one of the fools over here and insist that weight reduction on non-rotation and most importantly rotational parts is useless, that it doesn't give the difference that some people think etc? It is your choice! At least let the others to share their experience.

[tomm.brz]

Originally Posted by nikitopo

Lol again the same arguments from the same people. I provided at that time a complete log file and anyone could compare whatever range of speeds he liked even with a shorter FD. Of course, you ignore that a file was posted and make again an argue for the sake of the argument. And the same discussion continued at that time even when I converted the data with a road dyno application to whp (which takes in account the FD, car weight etc.) just to make everyone's life easier, when I provided logs on 3rd gear instead of 2nd gear and so on ...

So, do you still want to be one of the fools over here and insist that weight reduction on non-rotation and most importantly rotational parts is useless, that it doesn't give the difference that some people think etc? It is your choice! At least let the others to share their experience.

I dont think anybody said weight reduction is useless. But everybody just said you are exagerating a lot with your statements, specifically about the pulleys, your expensive header, and your final drive and your out of sense opinion on how many hp your car has
Can you please link again the logs you are Talking about? This forum is highly dispersive at times and can t find them anymore, thanks

[Tcoat]

Originally Posted by nikitopo

Lol again the same arguments from the same people. I provided at that time a complete log file and anyone could compare whatever range of speeds he liked even with a shorter FD. Of course, you ignore that a file was posted and make again an argue for the sake of the argument. And the same discussion continued at that time even when I converted the data with a road dyno application to whp (which takes in account the FD, car weight etc.) just to make everyone's life easier, when I provided logs on 3rd gear instead of 2nd gear and so on ...

So, do you still want to be one of the fools over here and insist that weight reduction on non-rotation and most importantly rotational parts is useless, that it doesn't give the difference that some people think etc? It is your choice! At least let the others to share their experience.

https://careers.workopolis.com/advic...roblem-is-you/

[humfrz]

Originally Posted by Tcoat

https://careers.workopolis.com/advic...roblem-is-you/

Oh, I just had to bookmark that one …


humfrz

[nikitopo]

Originally Posted by tomm.brz

I dont think anybody said weight reduction is useless. But everybody just said you are exagerating a lot with your statements, specifically about the pulleys, your expensive header, and your final drive and your out of sense opinion on how many hp your car has
Can you please link again the logs you are Talking about? This forum is highly dispersive at times and can t find them anymore, thanks

You know how to find them and I won't waste any more the particular topic with this silly discussion. If your issue is my car or my mods, then you have a real problem with yourself.

Originally Posted by Tcoat

https://careers.workopolis.com/advic...roblem-is-you/

Who said I am complaining about my job? Are you serious?

[Spuds]

Originally Posted by tomm.brz

I dont think anybody said weight reduction is useless. But everybody just said you are exagerating a lot with your statements, specifically about the pulleys, your expensive header, and your final drive and your out of sense opinion on how many hp your car has
Can you please link again the logs you are Talking about? This forum is highly dispersive at times and can t find them anymore, thanks

http://www.ft86club.com/forums/showthread.php?t=127548

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