G37 Coupe

Sandbag's were the cure, 50/50 weight distribution

Thread Tools
 
Search this Thread
 
Old Nov 1, 2021 | 02:37 PM
  #1  
SilverSurfer117's Avatar
SilverSurfer117
Thread Starter
Registered Member
 
Joined: May 2021
Posts: 15
Likes: 0
Sandbag's were the cure, 50/50 weight distribution

So recently I've wanted to do a 50/50 weight distribution on our car with the idea that it'll handle more like a mid-engine car rather than a car that needs to brake prior to entering the corner.
Someone here mentioned I should put sandbags in the back to see how it would handle, and I gotta tell ya it's night and day. wasn't sure at first but when I got to the canyons it was noticeably different.
When I took a turn before, if I made a left at speed, the weight of the engine would want to keep going straight and created resistance in the left turn, and vice versa for the right.
I got the car because it was front-mid engine and I wanted a car that handled like my old Mr2 but with some extra seats and usability. When I got the G I was pretty disappointed, but with the extra weight in the back it handles a lot more like a mid-engine car where when you accelerate into the corner the track opens up and becomes a lot easier to control and steer through.

I've only added about 200lbs to the back, but with my tank at half full it was closer to adding 150lbs or so. New weight distribution was roughly F52.6/R47.4

Was thinking about using this as a daily after getting it and getting something more capable for track but after this I feel comfortable using it as both.
I'm basically on a mission to take as much weight off the front and add some to the back.

What I plan to do so far:
Battery Relocation
Remove window washing fluid (-8lbs)
Add sound deadening to the rear (+25lbs, hopefully more)
LSD (+63lbs over stock diff)
Lightweight 2-piece front brakes (-20lbs)
Lightweight Headers (-17lbs)

This will put me at roughly F51.5/R48.5

Few other ideas im mulling over:

Cruise control delete- Was hoping that I can lose cruise control but since I don't have the radar brain box I'd just be losing maybe a pound of wiring at most so that's out.

Lightweight mirrors- Ours only weigh about 4lbs each, but wanted more aero mirrors anyways, so if they weigh a pound that's 6 lbs saved off the front

Electric water pump- might be a good idea but may only lose 10lbs but it all adds up

Removing sound deadening up front - I'd like to do this but im not sure how much I'd lose and I'm trying to keep it as steerable as possible, of course with how much im gaining in the rear I wouldn't mind a quiet cabin with a loud engine.

Electric power steering - Not too big on this and I think it'll only lose about 10 or 14lbs, starting to get a bit expensive for small gains which I'm not big on. I'd just make it fully manual if the car didn't weigh about 3700lbs after all is said and done.


Anyways I'm open to suggestions if anyone found some weight to take out of the front, I have no idea where 300lbs on the front could be hiding,
Reply
Old Nov 2, 2021 | 05:38 AM
  #2  
The Pope's Avatar
The Pope
Registered Member
iTrader: (2)
 
Joined: Dec 2016
Posts: 477
Likes: 80
From: Garner, N.C.
Glad that the Sand Bag suggestion worked out for you.

https://www.myg37.com/forums/g37-cou...tion-help.html
Reply
Old Nov 4, 2021 | 02:02 PM
  #3  
spoolin03's Avatar
spoolin03
Registered Member
 
Joined: Dec 2020
Posts: 380
Likes: 39
I wanted to post in here because I came to a similar conclusion.

Mind you mine is the qx50 which is roughly 4 inches longer than the sedan.

I got the car because of the 'hype' that it is a good handling chassis. I didn't expect much because mine is a wagon/mini suv, but I still felt like the handling was doo-doo so I was let down by the 'hype' being false.

When my car is full (4 people in the car) I notice that it is MUCH more fun to drive and handles like an actual exciting-to-drive car.

So I've concluded that adding weight to the back helps bring out that 'superior FM chassis' feel.

Instead of adding weight, would it help to soften the suspension in the back somehow?

Reply
Old Nov 4, 2021 | 04:30 PM
  #4  
spoolin03's Avatar
spoolin03
Registered Member
 
Joined: Dec 2020
Posts: 380
Likes: 39
i'll bet the sedan has the best weight distribution from the get go
Reply
Old Nov 5, 2021 | 11:43 AM
  #5  
BULL's Avatar
BULL
Moderador
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2019
Posts: 2,626
Likes: 765
From: South Florida
You could start with 2 piece light weight rotors, battery to the back. Aluminum 10mm bolts for fenders and engine hardware
As for the battery, take into consideration power cable size and length as 10 ft 2ga wire can be heavy.

For more extremes stuff you can start shaving some of the subframe edges and casting marks on the aluminum suspension - could yield up 10lbs but it would be a ton of work.
Brake lines could help, a set of properly measure brake lines could replace ALL of the many hard lines, willing to bet you can loose up to .5 -1lb per line.
Windshield washer bottle, up to you.

Crash bar shaving - the front crash bar is a heavy ****, some trypophobia treatment to that bar should yield some good weight savings.

Unsure if long tube intakes are heavier than stock.

Test pipes will be lighter than catalytic converters

Lastly you can experiment with removing both front seats and find out how much more it changes the car, each seat is 60+lbs, you can find comfier seats that are 1/4 of that weight.

Outside of this your options are limited
Reply
Old Nov 5, 2021 | 04:08 PM
  #6  
spoolin03's Avatar
spoolin03
Registered Member
 
Joined: Dec 2020
Posts: 380
Likes: 39
Originally Posted by BULL
Crash bar shaving - the front crash bar is a heavy ****, some trypophobia treatment to that bar should yield some good weight savings.
Would it be dangerous to just take that bar out and replace with a titanium bar?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SilverSurfer117
G37 Coupe
3
Sep 30, 2021 07:13 PM
pal51961
G37 Coupe
8
Sep 26, 2015 10:36 AM
override00
Brakes & Suspension
16
Jan 29, 2008 02:38 AM




All times are GMT -4. The time now is 02:53 AM.