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My Hr31 Buildup


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Hey guys’n’girls

I’ve been fooling around with 31s for the last decade (now i feel old :) ). Around 2-3 years ago I had started to think of myself as a fairly ok drifter and not wanting to take my chances with cops in the industrial areas of Canberra, i decided to build a track only car for DA. Only thing is, as most 31 enthusiasts, I’m cheap. Enter Budget Drift car super fun build!!!

Now, 2 years later, DA dies in the ass. So the plan now is to change a few bits(better quality as well) and turn it into a relatively cheap grip car. I plan on entering Supersprints , maybe some MRA days and just kick about trackdays with friends/SAU etc.

Anyway, here is my HR31 2 door GTS that i bought early '08 down in Adelaide, got it for 3k.

Still got a few thing i want to do to it. I'm in the middle of doing the cage atm but after stuff like r32/33 rear subframe setup, splitters etc. here’s where I’m up to...

Engine/Driveline

25/30 (slapper)

ViPEC (44 i think)

JJR coilpacks

Garrett GT35r, 0.82 rear

hi-mount mani

38mm external wastegate

3in exhaust

FMIC mounted where condenser used to be

Greddy copy plenum.

adj exhaust cam gear

Walbro pump

HKS 550cc injetors

Jaz fuel cell

R33 alloy radiator

GTR thermostat, twin thermos

23 row oil cooler

Power steering cooler

31 and 32 box’s

exedy 5-puk with up rated pressure plate and Carbonic pads

single piece tailshaft

KAZZ 2-way

Suspension/Brakes

S14 HSD HRs up front

S13 G4s in the rear

JJR Adj LCAs

JJR tierod ends

Adjustable castor rods

R32 calipers all ‘round with 32 front and rear rotors

G4 hydro

wildwood brake bias adj

Earls braided brake and clutch lines

Hicas gone and Z31 sub frame bushes

Interior

Stripped of course

Nardi wheel

Some old school rally seat

4 point harness

Alloy door/quarter/rear fire wall panels

Alloy dash with speco gauges

Exterior

CSS lip and skirts

HR side and passenger vents

Reverse bonnet vent

$15 crappy mirrors (but like 200g each)

Clear front/side indicators

Alloy Ducting for intercooler and oil cooler

Lexan rear and quarter windows

C-west t-wing

Manaray 17s

pictars

new car!

DSC00107.jpg

Cleaned up for NSW SAU wakie day 08 (ppl may remember the Redtop eating itself)

Garage1.jpg

Ebay racing

ABCD0011-1.jpg

On the turps and deciding to spaypaint it with Bullet32 (Hence Grumblebee)

GrumbleBee_0016.jpg

as it sits now (mostly)

P1015591.jpg

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neat setup with the fuel cell :)

cheers, i just recently changed it as it was on the left and side with the pick ups facing in. at the last wakie day it would get fuel serge with over half a tank!

since taken it to a motorkana - no surge at all :rofl2:

what intake is that? (I's assuming Rb25 as well.)

do you mean the plenum? its just a greddy copy for a 25.

if you get one of these, make sure you get it pressure tested and have the face machined before you put it on.

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im after some suggestions on spring rates as the car is set up for drift and is very stiff

I know the fronts are 8kg/cm but have no idea about the rear, I also i think its just rears that’s the problem as im bouncing around when putting the power down.

the car weighs 1150kg with out the cage, driver and fuel so say 1330-1350kg all up, and most of the weight came from behind the A-pillar

im also running stock swaybars atm, but adjustable ones are on the cards.

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Just thought I'd add a few points to this thread for you James :D

Even thuough this car has been a "budget build" I have been amazed at just how well it goes, with consistent 1.10's at Wakefield (including fuel surge, slipping clutch, too much front camber and Federal 595RS-R tyres) after the work that has been done recently getting the power to a reasonable level (tuned by Glenn at ESP Racing), getting the power to the ground with some suspension tweaks, sorting out the fuel system and putting in plenty of cooling ducts for the engine and brakes, we should be able to get it into the 1.09's or lower with some stickier 'R-spec' rubber.

Here are a few more piccies of the build (hope you don't mind me adding these James) :)

Taking the old (blown) RB20 NICS out...

Copyof2408200810101.jpg

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And putting in the new RB25/30...

R31Drifter08.jpg

R31Drifter04.jpg

Custom air guide for intercooler (oil cooler installed as well)...

R31Drifter02.jpg

Interior begins to take shape...

240820081020.jpg

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R31Drifter01.jpg

IMG_0070.jpg

After about 14 or 15 beers we decide that it would be a great idea to paint the two tone bright yellow...

GrumbleBee_0025.jpg

GrumbleBee_0009.jpg

GrumbleBee_0016.jpg

GrumbleBee_0010.jpg

GrumbleBee_0006.jpg

GrumbleBee_0023.jpg

Not bad for a spray can job :)

GrumbleBee_0004.jpg

GrumbleBee_0003.jpg

The brakes looked a bit dull...

GrumbleBee_0020.jpg

GrumbleBee_0022.jpg

Wakefield Park (the shakedown day)...

Picture005.jpg

Picture003.jpg

Picture002.jpg

Picture015.jpg

More photos to come...

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cheers man

cage is nearly done and im thinking of respraying the cabin.

been thinking either all white, all black or maybe black with the cage yellow.

i thought that white might be a bit too reflective but there seems to be a lot of race cars with interiors...

Any suggestions?

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  • 4 months later...

ohh yeah i have a thread in here :P

not much to update really. i got the cage in, it and the interior are now black.

took it to a SOTS at wakie for some fun (round 1:10s hand timed) i think the coils are sparking out as it would start to miss something bad around 5k.

also ive order some new smaller front spacers in the effort of trying to dial out some camber. after a full day, a hole inch on the out side of the fronts were still clean! spose thats what you get for have the alignment setup for sliding pinch.gif

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  • 2 months later...

been doing a little bit lately. trying to get the car ready for the SAU V REACT day on the 28th. im excited :)

shortened the LCAs 20mm to curb some of the ridiculous camber, also splurged and got a wheel alignment too J now running -3.5deg camber all round, 5deg castor, 2mm tow out at the front and 2mm in at the rear

Installed some cool mirrors (cheapies, but i don't care :P )

P5150067.jpg

mounted my new seat to the floor without rail as my head was being push to one side by the cage padding. Also put the fifth point in for the harness.

P5150073.jpg

P5150072.jpg

Got in some splitfires to replace the f**ked JJR coils. Hopefully these will hast more than a half dozen runs...

P5150069.jpg

neato airbox thing

PA080091.jpg

with guide

PA080084.jpg

bullet32 drew me up a pic that i got made up as a sticker for the wing

P5150074.jpg

hmmm thats all for now i think. cant wait for the 28th :banana:

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Been following this on the 31 club. A mate of mine test drove this car with the old 20 in it, he ended up walking away as it was too much of a pig. But you have turned it into something alot better than it was.

Good work champ!

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