EK9 Honda Civic Type R Weight Reduction advice


No powersteering isn't THAT bad.........

I'm running R888 tyres, very very stiff setup with lots of camber (some extra castor too and increased front track width) and my arms didn't get any more tired driving it round knockhill than when I had powersteering

As mentioned, weight reduction is nothing without balance, corner weighting/accurate suspension adjustments are key

Think my car is down to circa 950kg now, thats 150kg less than standard :nerv:
 
what a brilliant thread,

I found lightweight seats made a massive difference on my old clio track car, they were 30kg each!!!
 
ADDITIONAL WEIGHT REDUCTIONS
MISCELLANEOUS ENGINE COMPONENTS WEIGHT


Braille Battery 11.5 lb

Stock battery 28 lb

OEM Civic Header + Catalytic converter 23 lb

Skunk2 Prototype Mild Steel 15.28lb

OEM stock header w/o catalytic 8 lb

OEM rear exhaust 15 lb

Skunk2 Megapower exhaust 8lb

OEM intake manifold + throttle body 14.25 lb

Axles + midshaft 37.06 lb

Starter 7.34 lb

OEM flywheel 14.18 lb

Fidanza aluminum flywheel 8.04 lb

OEM clutch disk 2.72 lb

OEM Pressure plate 8.66 lb

OEM flywheel bolts 8.64 oz

OEM clutch bolts 2.56 oz

Fidanza clutch bolts 2.56 oz

OEM crank pulley 5.10 lb

Unorthodox Crank Pulley 12 oz

Valve cover 6.84 lb

Timing chain cover 3.22 lb

K24 Timing chain guides 11.2 oz

L20 Timing chain guides 10.56 oz

OEM coil packs (4) 1.72 lb

OEM fuel rail + OEM injectors (4) 1.75 lb

RC Engineering injectors (4) 14.4 oz

Aluminum Oil Pan 7.66 lb

Steel Oil pan 4.60 lb

Wire harness 6.30 lb

Race motor mounts brackets 4.32 lb

OEM rods, cast pistons, rings, bearings 2.06 lb

Custom K24 Castillo Crank 96.5mm stroke

(micro polished, balanced) 36.44 lb

Oil Pump (K24/TSX) w/balance shaft assembly 11.3 lb

Oil baffle plates (K24/TSX) 0.38 lb

OEM head studs 2.64 lb

VTEC Solenoid 1.24 lb

OEM fuel pump 5.58 lb

OEM fuel pressure regulator 1.50 lb

OEM Battery Tray 1 lb



BODY PANELS / EXTERIOR WEIGHT



OEM 15x 6-in alloy wheels

w/ 195/60 R15 88v all season tires 41 lb

Forged Monoblock Volk TE37 18x 8.5-in wheels

w/ 215/40 ZR18 BF Goodrich G-Force 40 lb

OEM Hood 28 lb

Braille carbon fiber hood 14 lb



INTERIOR WEIGHT



Dash support 17.44 lb

Roof webbing support 5.68 lb

Rear Speaker/side panel metal support 2.26 lb

Door beams/Side impact 19.38 lb

OEM Front Seat w/o Brackets 27 lb

OEM Front seat Brackets 5.64 lb

Rear Seat (top and bottom) 17lb

Recaro/Braille Carbon/Kevlar Stage 3 Bucket

w/o brackets 9 lb

Rear Seat Belt Brackets 11.08 lb

SRS control unit 74 lb

Misc. Brackets

(ECU bracket, fuse box bracket, etc.) 3.06 - 12.2lb

Parking Brake Cable Cover 1.04 lb

Firewall Layers (3 layer OEM equipped)

two removed

1st layer 9.34 lb

2nd layer 5.80 lb

Sound deadening material

(rear hatch, floors, firewall) 19.02 lb



FLUID WEIGHT

Gallons & quarts



Oil:

1 Gallon 7 lb

1 Quart 1.75 lb

Water:

1 Gallon 8.4 lb

1 Quart 2.10 lb

Gas:

1 Gallon (depending on grade) 6.2 lb

1 Quart(depending on grade) 1.55 lb



Honda Civic:

13.2-gallon topped off gas tank 81.84 lb
 
anyway, noticed the k20 spoon ek9 was 950kg in the BM vid, anyone know what they did to get that?
 
Lee s said:
anyway, noticed the k20 spoon ek9 was 950kg in the BM vid, anyone know what they did to get that?
Click to expand...

Lie... ??

nah no idea mate..at a guess i reckon they made the bonnet, doors, tailgate, wings, mirrors out of carbon fibre and painted it so lookked OEM and also plastic windows maybe..
 
ah the panels might have been carbon?
well ive got 100 odd kg out so far, just need to weigh it!
 
Would have thought 950 is achievable without any carbon parts (apart from bonnet perhaps) standard base-model EK9 is like 1060.
 
might give it a go!

950kg and 225 bhp through a locking LSD..........
 
Has yours got a big front bumper bar? You can chop that off and weld-in a race-base bumper bar which is super-thin, that'd save you like 10 KG's I'd imagine.
 
f*** lee your car is gonna be mega if you can get it down to a feather weight..

i saved a good 80 kilos from rear seats/rear interior and sound deadening.. as you said you got 100 kilos out so 10 more ( the bar thingy ) and you shouldn't be too far off...
...225hp and 950kilos.. bloody hell i want !!! i want !!! I WANT !!!!!!!!
 
Championship White said:
Has yours got a big front bumper bar? You can chop that off and weld-in a race-base bumper bar which is super-thin, that'd save you like 10 KG's I'd imagine.
Click to expand...


no welding needed, its bolt on item :nice:


weight reduction can get crazy but gets very very expensive past a certain point, 800-850 kg is achievable on an ek9 but expensive and at that weight only suited for track/weekend use
 
Championship White said:
Has yours got a big front bumper bar? You can chop that off and weld-in a race-base bumper bar which is super-thin, that'd save you like 10 KG's I'd imagine.
Click to expand...
Im sure racebase bars are hard to find, would removing the bar altogether allow the front to flex too much?,
 
ive got couple of the lightweight front bars if anyone needs one, what i replaced my oem heavier bar with
 
Scales weighing Racing garage ohsumis race EK9 , 869kg's with 20l of petrol !

RG-Oweight.jpg
 
Topher-EK4 said:
f*** lee your car is gonna be mega if you can get it down to a feather weight..

i saved a good 80 kilos from rear seats/rear interior and sound deadening.. as you said you got 100 kilos out so 10 more ( the bar thingy ) and you shouldn't be too far off...
...225hp and 950kilos.. bloody hell i want !!! i want !!! I WANT !!!!!!!!
Click to expand...

We will have to meet up at a track at some point and you can have a cabbie.
 
Lee s said:
Good god!

Any more info?
Click to expand...

I think they say its as far as you can go without cutting the body , full strip
No sound deadening , paired back wiring , titanium exhaust , single layer bonnet , fuel cell , no electrics , etc etc

Heres pics from their blog

img_1269256_38644495_1.jpg

img_1269256_38644495_0.jpg

img_1269256_37970780_0.jpg

img_1269256_38247362_0.jpg
 
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