Mungy's R31 Time Attack Build

[mungy]

Hey guys im still pretty new to all of the high performance stuff and I really dont have thousands of dollars to blow

on a shiny looking engine bay but im obsessed with turbo cars and to me if it aint turbo its just not a performace car.

Because I dont have a shit load of money to blow my build will be done as cheaply as possible, yet still having the correct gear in the car

to make her fly on the track.

I started with a goal in mind of doing 1:10 at mallala in SA, as i was told by a few people it wasnt possible unless i had like 50k to spend on a car

BS i told em ive had a 1:28 in a interga with a type R engine and mild suspention and brake work, so i only need to wipe off 18 seconds

and i believe it can be done with a budget of 10k. They also said the hardest car to do it in would be an aus del R31.....so thats exactly what i went out and bought lol

and so the journey begins, i needed a 31 with some work already done so i could spend more on the handling side than the engine side,

I looked for a WHOLE SOLID HOUR lol, before i saw this bucket for sale

[Roy]

Don't Carrera Cup GT3 Porsches only run 1:12s?

Be interesting to see what you have planned and how far you can get....

[Sir Lord Van Von Vader'ham]

hope it all goes well for you.

heres the top R31club lap times for lala for inspiration

MALLALA

kitto 1:21.89 (30ET Aus 4 door)

blue 1:24.88 (HR31 GTS-X)

DVSJET 1:25.66 (30ET Aus 4 door)

Murph 1:26.99 (Hr31 Drift Car)

Silo_31 1:27.11 (30ET Silo)

hall sales 1:28 (Pintara 20det)

Stevie 1:30 (HR31 GTS-X)

Gavin 1:31:44 (30ET Ti)

Adel_gts-x 1:34:29 (Hr31 Rb25 Neo)

Twink 1:37.31 (Hr31 GTS-X)

BIG NUGZY!!! 1:40:00 (30ET auto)

Wayne 1:44.84 (30e auto Silo)

[Jap_star]

lol, goodluck with that. Ill assume you dont drive Mallala too often then

[PurpleR32]

Don't Carrera Cup GT3 Porsches only run 1:12s?

Be interesting to see what you have planned and how far you can get....

Yep roy they do:

http://mallala.com/information-2/lap-records/

I dont know how up to date they are with their website though.

Please dont take this as criticism, more of an observation. You should possibly think about a different form of

motor sport (all out time attack might not be for this project) or a different platform in which to start.

I wish you all the best in your endeavours.

[mungy]

WOW! ok im abit confused as to y some of those times are over 1:30? ive done 1:30 in my brothers corolla with an NA 20valve in it, ill chase him up for the video!

ive also had 1:28 in an integra gsi with a NA Type R motor

so my thinking was i could shave off those extra seconds with a high horespowered turbo car? or maybe this is gonna be harder than i thought lol

well i will be going nuts with handling too so i hope i really can get there

few more photos of it im tossing up the idea of transplanting the engine into a S14 but i feel more determined to do this with the 31 now.

ok so to strart with I found a 31 with a load of goodies already in

they consist of

Rebuilt by Phil Collier himself, at Collier engines in Adelaide

Forged pistons, standard size (forgot brand ROSS i think?)

ACL race series bearings

450cc injectors

nisstune computer

adjustable fuel reg

front mount cooler

multi layered steel head gasket

decked block

full balance

bored out throttle body

turbo cam

3 inch mandrel bend turbo back exhaust with high flow cat, custom dump all 3 inch

lightened fly wheel

external waste gate

garret to4e top mount turbo

ported head, 3 angle valve job

clutch was slipping cause it wasnt the right pressure plate, and it needs a Z32 to run properly so a real project it is lol

So the first thing I did to anticipate abit longer lasting driveline was get a clutch made by Keith from KB Clutch Engineering, its a 5 puk ceramic clutch capable of taking 350KW ATW

Here it is!!!!

And here it is on the 31 now

saving up to get a 25 gearbox so i chucked a RB20 box just to get her moving around

ok so over the weekend i started to check for rust and striping the interior out

was a crap job to do but it needs to be done! and best of all NO RUST!!!! WTH a car older than me with no rust? i was so dam happy lol

Ive found an s13 5 stud front susp conversion i want put in the 31 but she has developed some kind of oil problem today so i might put that on hold for now and look into a better oil pump, crank collar ect ect before i start on the handling side of things

will update on the weekend

Edited June 20, 2011 by mungy

[mungy]

lol, goodluck with that. Ill assume you dont drive Mallala too often then

you of little faith, even if i dont get 1:10 it will be close, and ill personally put the egg on your face if i manage it lol

[mungy]

Don't Carrera Cup GT3 Porsches only run 1:12s?

Be interesting to see what you have planned and how far you can get....

im cash poor because i have a kid on the way so the complete build will take at least 1 year, but when its done i promise she will not dissapoint

the plans I have for the handling side are going to be the most important and im currently looking into IRS rear end with the help of a good mate building his own monster

IRS will require cutting and fab work but i think the results will be well worth the effort

[Beer Baron]

if you want IRS etc why not just start with a 32 or 33 GTST shell? if it's only a track car you could get a pretty decent 32 GTST or 33 GTST non-registerable shell for not much coin.

[mungy]

if you want IRS etc why not just start with a 32 or 33 GTST shell? if it's only a track car you could get a pretty decent 32 GTST or 33 GTST non-registerable shell for not much coin.

Very true and i have found a track only 32 shell, but the reason i chose the 31 is because people say it cant be done, well i say with the right mix of power and handling it can!

every car has the potential just have to find what works for each car.

Edited June 20, 2011 by mungy

[Ad's]

kitto 1:21.89 (30ET Aus 4 door)

I believe Kittos time was done with a 200kw RB20DET with semi slicks at skyline nationals. But i could be wrong.

Good luck i will be watching this thread. Deffs need abit of chassie strength so maybe a rollcage and extra bracing.

Edited June 20, 2011 by Ad's

[mungy]

kitto 1:21.89 (30ET Aus 4 door)

I believe Kittos time was done with a 200kw RB20DET with semi slicks at skyline nationals. But i could be wrong.

Good luck i will be watching this thread. Deffs need abit of chassie strength so maybe a rollcage and extra bracing.

aaaah good point i havnt even thought about the chassi

thats an awesome time, honestly with my budget if i come close to a time like that ill be really happy.

anyone know where to find a cage for a 31 lol?

[Sir Lord Van Von Vader'ham]

bonds (sydney) make cages for them for a reasonable price. theres also a member on here who does really good work.

[mungy]

Ive been looking into a custom built one, ive never seen the design before but it looks promising

it seems to go from the top left of the suspention tower on the front... into the cabin, then crosses over to the rear right side of the car and vise versa for the other side

then it looks like it braces the rear quite well too, ill try n draw a picture of it and post it up lol, but im crap at drawing so dont shoot me when its up.

[mungy]

so heres what it would look like....any thoughts on this?

[Snowman]

Love your ambitions - but this thing only does 1.13's. I know people who have spent over $10K to go 1s faster - so to try and go 18s faster is going to be a lot harder than I think you realize!

[J - Rad]

I'd be looking at a goal of 1'20 TBH. Like above, 500kw R32 GT-R running close enough to 1'13 and its only got a half cage and full interior so you've got a long journey ahead of you. But all the best.

P.s - Brad Trentworth just got the T.A Philcom Lap record last week with a 1'11 something in his RX-7. Just afew cars you'll be up against.

[Nightcrawler]

Nice ambition, but for $10k you will struggle to crack a 1:20. I am willing to bet serious coin that you never crack a 1:15 within your $10k budget, if at all. Hope this motivates you more, but you are dreaming

And by 'just shaving 18 seconds off your old lap' in the Honda is like the difference between doing a 13 second quarter mile and an 10 second quarter mile.

[Damo_R34]

Greg Murphy holds the lap record for V8 supercar around lala at 1:08. Martin Donnon has shot a fairly out of the box evo X to 1:15 and STi to 1:16. Keir has sent his 35 GTR with a mansion-load of development around for a 1:11. Good luck!

PS: Mallala is mostly about handling and braking, what have you got planned in the brake region?

[Madaz]

is it Lukes old 31 skyline_guy?

all the best dude