DexGT's race car

[DexGT]

NAME : DexGT
MODEL :starlet GT
YEAR :1991
ENGINE : 5E-FTE

Driveline:
5E-FHE block
5E-FHE cams
ACIS inlet mani changing at 5300rpm
Ross forged pistons
PAR forged rods
AGZE injectors>>>>>>>>>>>>>>>> now replaced with Denso BLUE 600cc Injectors
Steampipe exhaust mani with a GT2560R turbo>>>>>>>>now has GTX2863R turbo fitted
3" dump pipe ,>>>>>>>>>>>>>>>> 3" exhaust
V5 LEM link ecu>>>>>>>>Now has G4 storm ecu fitted
TRD LSD>>>>>>>>4.3 diff ratio and C56 gear set in C52 case
VR4 front mounted intercooler >>>>>>>>>>>>>>>replaced with 300 x 450 x 75 intercooler (new)
TRD pressure plate modded for more clamping (now 2060 lbs)
>>>>>>>>>>>>>>>>5 puck custom clutch plate
>>>>>>>>>>>>>>>>>60mm subby throttle body
>>>>>>>>>>>>>>>>>Baffled sump and Accusump fitted


Suspension
>>>>>>>>>>>>>>>>>Whiteline heavy duty front swaybar (24mm)
Whiteline anti lift kit
Whiteline rear swaybar
All bushes replaced with polyurathane
Tein Flex coilovers with camber plates
205/580/15 Khumo C03 semi slicks in the dry
195/50/15 Khumo 712 tyres in the wet

Brakes
Brake master cylinder brace
Hawk Plus race pads all round
Celica calipers on slotted 22mm thick rotors at front>>>>>>>> replaced with wilwood 4pots on 25mm discs at front
>>>>>>>>>>>AE92 rear discs on custom hubs with wilwood 2 pot calipers
Braided lines
High temp brake fluid

Interior
Welded in roll cage
Racetech seats with 6 point harness's
autometer gauges
Stripped interior
TRD 280km speedo

Exterior
bonnet pins
White body , green panels (no money left to paint it )
Some stickers inc race number

ICE
the sound of the motor , prefrablly around 7500rpm

New turbo and G4 fitted

[DexGT]

here's a couple of pics of my new top mount setup , I have made the new manifold with external wastegate , 3" dump , 3" exhaust to rear muffler with oval section under rear engine mount/ inner CV , 3" inlet pipe to turbo , and today I have just finished fitting a turbosmart E-Boost so tuning time tomorrow night
I also fitted a 24mm front swaybar which I discovered at the street sprint I entered last weekend made my car handle like shit , still , if I'd got it going more than 11 hours before the event I could have played around with springs etc to get it handling how I want it .

I have more photos so I'll put them up when I get a chance

[DexGT]

here are some more pics of the upgrade , can't wait to get it retuned and see what it makes



engine bay with new setup


pic of external WG etc


top mount mani under construction


finished mani all wrapped up


most of the new bits , note dump held up by WG dump pipe


3" flexi tucked up , you can see oval section of exhaust , I can bolt a bar to the lower arm brace bolts and it goes under the exhaust

[DexGT]

I'm doing some more upgrades , due mainly to me doing something when I was tired ie drilling a hole in my radiator therefore having to fit this

nice new 60mm thick 3 core radiator


and that lead to fitting this

300x 450x 75 IC with 2.5" inlet/outlet ( I will get better pics )


I decided to do a brake upgrade too

old setup


new setup


new setup without wheel on , disc is 275mm x 25mm thick, 4 pot wilwood caliper


pic of my "high tech plywood brake pads " I may upgrade to real pads ,.......... almost certainly before actual driving is involved

[DexGT]

more pics of the upgrades , note the new "slam panel" , intercooler piping ,and cold air box

[DexGT]

I have been doing more work on the race car after partially running the big ends due to oil surge .
here is the baffled sump



and the lightened gear change , the holes in the plastic body saved bugger all weight


While the motors apart I got a shot of the clearance needed in the block to clear the forged rods


and this is whats going in the block (with the correct clearance this time ) , I love the warning on the box.



I will get some more pics as I rebuild the car .

[DexGT]

The short block is now assembled

with these rods

While it was striped down I cleaned up the oil return holes in the block

here is a better pic of the cold air box which is fed from the spotlight hole in the bumper

[DexGT]

here are some shots of the motor /box waiting to go back in today






The mods done include;
new forged pistons ( correct clearance)
new big end/main bearings
ported head
baffled sump
600cc injectors
60mm throttle body
Diff changed to a 4.3 ratio
lots of lightweight brackets etc throughout the car saving 22 kg so far

I have a couple of weeks to run it in before dyno tuning with the new injectors / TB fitted

[DexGT]

Got car back from dyno today , is now making 213KW atw at 21psi , 168KW at 13psi and 138KW at 8psi , now all I have to do is figure out how to get it to the ground without to much wheelspin . I am seriouslly looking forward to the hillclimb I have entered in 2 weeks time.

[DexGT]

Here is the dyno sheet , the lower reading is the old one . The torque is differerent due to the new diff ratio as well as the new setup making more

Here is the moded rear mount and the addaptor for the exit of the turbo compressor to the new 2 1/2" turbo to IC pipe

Here is the new pipe vs the old 2" pipe

And here it is in place with the now black IC

[irish lad]

on the dyno!

[DexGT]

here is what my starlet sounds like at 8000rpm and 20 psi boost on a rolling road
http://www.youtube.com/watch?v=7tqO8w8JRko
I am standing to the left of the video taker checking if my ACIS mani is changing over ..... and it WAS (finally)

[DexGT]

Heres the incar from the last 3 events I've done

Kaihinau rd
http://www.youtube.com/watch?v=i1Pc3ocCd0w

Te Onepu Rd
http://www.youtube.com/watch?v=W7gGXMPE0Qw

Pukeora Rd
http://www.youtube.com/watch?v=lrgkEEI6JXc

[DexGT]

After running a bearing the day before megameet I am doing another engine rebuild which has involved crack testing and checking for straightness of the crank , and when it was OK a full regrind . Then one rod had to be resized and the bores needed a lite hone . I also needed new bearings and a new oil pump .
Then I decided that I needed to make sure that oil surge wouldn't get another motor so I got a Accusump and some ARP head bolts while I was at it . I will also redesign the sump baffles before reassembling the motor.


While the motor was out I decided to tidy up the wiring and after 11 hours work I can barely see the difference

[DexGT]

I had an epic fail at manfield a while ago when my temporary attaching of the TB stopped being attached and this pic shows how I "repaired " it so I could drive home to wellington..... YAY cable ties and race tape

It turns out that 2 M4 cap screws are not enough to keep the adapter plate attached , they were only there while I machined the inlet hole to suit the 60mm TB and then I forgot to weld it on. It was quite exciting to get to the corner with the engine staying at 5000rpm .
After the cable ties were applied the idle dropped to 1800 odd which at least meant I could drive home.

I am in the process of changing the drive coupling in my BMW , you can see some small differences between the old and new one


You have to remove the exhaust to get to the drive shaft and this section almost crushed me when it came off , it weighs over 30 kg


The race motor gets reassembled this weekend hopefully , it was meant to be last weekend but the bearing clearances were up the shit , now after more money being spent, the clearances are now set at 2 thou which is much better .

[DexGT]

Motor is back together and back in the car , note the lack of oil lines and cooler ,the MR2 steering reservoir on the right hand side of the pic and the repainted cam cover



and the new 4 gauge mount and big low (20psi)oil pressure light are done , the gauges are like this so I can see them on the incar vid after the event cause I never look during



and the MR2 power steering pump is in and working .
Now just a few little things to sort and running in the motor and I can give drag racing a go this weekend

[DexGT]

I have done some more work on the car , I have now got 500ish km on the rebuilt motor , I didn't make it to the drags sadly but the car is looking good for a street sprint next weekend and a hillclimb the weekend after

Here is the finished center panel that has the on/off and assistance adjustment for the electric power steering , if you look closely you can see the Accusump open/close handle and the accusump itself behind the gear change , on the passengers side of the tunnel .


Here are the carbon-fiber mirrors I have fitted , each one saves 1kg and should be more aerodynamic .


Finally I made this plaque in memory of a mate who was killed in a car crash a few years ago , I sure hope the heat doesn't make it fall off


and

[DexGT]

Here's a better look at the Accusump installation , I have now done a sprint with it in place and it's awesome , the oil pressure stayed at 60-70 psi the whole time , this was at the same sprint that killed the motor previously .


I also got a pic of the battery install while the passenger seat is out

[DexGT]

Heres the incar from the Wallaceville rd hillclimb I did on sunday , I got 3rd overall , got beaten by a RX7 batmobile with a lexus v8 in it and a early 5 series BMW also with a lexus v8 in it , so toyota power 1st three places
http://www.youtube.com/watch?v=nJ4b5x7jn-4

And here is the Port Road street sprint the weekend before , using worn semi slicks made for no traction , I ended up turning to low boost(7 psi) half way though the run.
I got 2nd in class and 10th overall , was a 4WD day for sure
http://www.youtube.com/watch?v=OChBP44KCVA

[DexGT]

I have just competed in the motorsport new zealand clubsport nationals on the 5th and 6th .
I got 2nd overall in the hillclimb , I lead right up to the last round when a guy in a Evo powered 4WD mirage piped me by 0.29 of a second , still I made him use his high boost setting (450hp atw) to do it
I am doing 105km/hr at the 1st corner and at the braking point on the straight am just hitting 150km/hr , not bad for in the wet

This is my fastest run
http://www.youtube.com/watch?v=ZyrYSfOSQE0

I got 9th overall , that's down to the inability to turn tightly in the motokarna, really must finish the hydraulic hand brake