my 1uz supercharging power gains

[supracharged1]

hi guys

i thought it was time i started posting on here, been a member for long enough !

since 2004 , seen alot of progress and interesting projects on these forums
big shout out to you all for making it the best 1uz forums in the world
and of course lex for keeping it going !

i want to share with you guys my experiences with 1uz mods that i have done on my supra
and the power figures i have got along my journey ( will not talk about cost )

a friend did post on here some time ago about my car ,
thought its time for a update

project : 1983 mk2 supra , re-power her with a 1uz and supercharged it

we finished the car in late 2005

stage 1 upgrades : ( first build )

engine : stock internals ( not opened )
modified manifold for the supercharger
Eaton m90 supercharger ( smaller pulley) 5.9 psi
water to air intercooler, using a subaru radiator and pump
standard throttle body
7mgteu injectors
ecu : linkplus
fuel : modified fuel rails, malpassi fuel reg , bosch 044 pump , upgraded fuel lines from the tank
exhaust: 1’ 5/8 headers , running two , 2 ‘1/2 pipes joining together for 10’ then exiting the side of the car
transmission : A340 , internally modified ( taken the smooth changing out ) , now a manual changer , with the help of mates standard alone circuit board made for the trans its good

power : 273 rwhp / 204 kws @ wheels , 5.9psi

stage 2 upgrade :

camshafts : kelford cams spec supercharged cams
heads : ported and flowed / decompressed
ecu : upgraded ignigter packs running separate coils ( ditched the factory dissy’s)
leads : upgraded the coil leads to 8 mm

re-tuned power : 328 rwhp / 245 kws @ wheels , 4.9psi

stage 3 upgrade ; ( current setup )

supercharger : install the eaton bad boy m112
intake : change the intake , bigger piping / 90mm throttle body

re-tuned power : 410 rwhp / 305 kws , torque 950 nm @ wheels , 10 - 11 psi


stage 4 : next planned mission ( next trip back to new zealand )

because of what we have done , driving it , it simply starts overheating under boost
we thought there may have been a blown head gasket or something
so last time the heads were removed and inspected , no problems that were visible
the thermostat was replaced as well as the org radiator taken apart and cleaned properly
from that we can only assume,
the main radiator can no longer handle it, need to upgrade to a nice big one
intake temps are far too high , 90 - 100 deg celsius / 194 - 212 fahrenheit
the water to air intercooler is no longer doing its job ,
will replace the water to air, subaru pump with a toyota GT4 water pump ( its a bit bigger )
we may have to install water/meth injection to solve the problems

if we can sort these small issues out , and get air intake temps down ,
we should produce some more numbers on the dyno
hopefully making it reliable and more fun to drive

I have been based in Nagoya , Japan for the last 4 years , the car is parked up in my garage in New Zealand , next time we go back to nz , hopefully we will sort these issues out

big thanks goes out to the lads at http://dynopower.co.nz/ for their help and tuning

kevin at kelford cams http://www.camshaftshop.com/home?vmcchk=1

all the boyz that have helped me and kept me focused on my ride over the years


pics of my supra and video of the dyno runs can be viewed on our gallery http://gallery.me.com/hayatonka#100065&view=grid&bgcolor=black&sel=34
( video takes a bit to load )

cheers
ewan paterson

[email protected]
http://www.hayatonka.com

 

[SC400TT]

very nice introduction, and what a badass ride Ewan. welcomed to Lextreme.
Ryan

 

[ruishy1]

very nice, i would upgrade to the m112 instead of using the m90, or at least have it ported.
but thats a very nice spec list

 

[JustenGT8]

Nice to know for sure the M112 can make 300rwkw as that's what i'm aiming for with the M122.....major WI instead of Ic and just stock cams....i'll run15psi though.

Tough looking supra

 

[cribbj]

Welcome to Lextreme and kudos on your build.

Looking forward to your Stage 4 buildup and hope you can get your cooling under control. It's certainly a common problem we all have, once we double or triple the stock output.

 

[supracharged1]

hi guys

thanks for the nice feedback
as you know these builds take time

stage 4 is underway soon
much to my disappointment, i will not be there with my hands on approach getting dirty as usual,

i have to leave it to the boyz at dyno power to sort out for me

hopefully on my next trip back to nz in a few months time , i will get to drive her and give her a good thrashing ,
rather than spending all my holiday working on her,
i will keep this updated so you guys can see how things went

as a side note , one of the guys working on my car is a 1uz owner himself,
i think i converted him a few years back ,
his ride is the earlier RX7 SA22, ( track car only )
his ride has been re-powered with the 1uz and turbo charged
the owner does not hold back when building things
he has just informed me of his new power, and of course how much fun the 7 is to drive
486kws @ wheels 11 psi ( 651hp ) !
if only i had this much power , needless to say i have booked a ride in this 1uz powered beast below

 

[cribbj]

Ewan, you need to explain what all those aluminum cores are doing in your pics Call me nuts, but it sorta looks like each turbo has its own intercooler?

But one is laying down, while the other is standing nearly vertical. I'll bet the efficiencies and post-intercooler temps are wildly different?

 

[supracharged1]

hi

sorry there is only one turbo, its a brazilan made "master power" turbo,
yes there are 2 big intercoolers , the owner wanted as much cooling as possible , apparently the system works really well ,
sorry i don't know the actual intake temps,
next time i talk to him i will see what the average is between track and dyno temps

 

[stevechumo]

This project is top notch. I always like Supra MKII. It was my high school dream. And now you have the combination of a boosted 1UZ in a MKII body. Very nice!

 

[XR8tt]

The inlet on the RX7 looks great.. If only I could copy and past it to my engine.. Lol...
Strange your car was bought up a few years ago on another forum in projects on my build...
Good ole Kiwi enginuity ...
Welcome to forums....

 

[supracharged1]

hi
the org build was finished about 5 years ago , every year i do a couple of upgrades , slowly getting there , good things take time .....
yeah it was on these forums awhile back and some celica/ supra forums
sorry not a regular poster on the forums

just a small update,
been talking to a few peeps , looks like its going to do the water/meth injection, it has to be done
looking at this kit at the moment http://www.coolingmist.com/detailmain.aspx?pid=cmgsfs
will get things in motion in the next few days to order a kit

hey was taking my mate with the 7 , intake temps are floating around 40deg c or 104 F

yeah i love the manifold too , its like a shinny piece of jewelery for us !

 

[XR8tt]

Yep those kits with alittle Methanol keeps temps at bay..
Another company..
http://www.snowperformance.net/

 

[supracharged1]

update stage 4

hi guys

update with stage 4

well the boyz at dynopower got in and done the much needed upgrades
very nice work guys !

1. radiator
they put the biggest radiator in there possible,
ended up fitting a nice big cross flow radiator
they had to move a few pipes around, so the thermo fans could still fit in
the filler cap got moved to engine.

2. water to air intercooler system
they installed a fan on the separate radiator for intercooling system,
soon as we turn the water pump on the fan kicks in, nice
they relocated the filler pipe/ cap for water air in cooler , made a nice little reservoir , that got stashed on the back on the intercooler , looks like it was made to go there

3. water / meth injection
very nice kit and simple
the guys installed it without to much hassle , very easy to tune

ok everything was done that was needed to be done
the car was re-dyno tuned, setting up the water/meth injection
they done a few runs , with the reservoir bottle for the water/meth lasting 10 really good runs ,
the engine was keeping cool , no overheating what so ever,
intake temps were floating around 40 deg ( 104 F )
overall power increased a little bit
305kws to 320kws @ wheels or (410hp to 430 hp )

everything was running good so i was really happy

test drive
all i can say is, F### yeah , that's F### awesome
that kind of power in 1200kg ( 2,645 pounds ) car was incredible
i have not driven it in a long time , about a year and half before with less power , kinda crazy after driving my little van in japan
it accelerated so hard it was scary, the blower noise was so dam cool
it was like i was driving the car from the mad max movies
seeing the blower working , hearing it whining away
that was priceless

i did not get to drive it very much as the weather in New Zealand
while i was there , was not the best , lots of rain !!!
i tried to drive it in the rain , waste of time , no traction
got busted by the police ( loss of traction ) and a $600 ticket
i did get a really good drive the last day before i flew back to japan
i managed to quench my thirst for speed !!!

the stage the car is at now, is really good, i am so happy
theirs not much more we can do , but drive it

i have uploaded pictures of the upgrades onto our gallery
for you all to see

http://gallery.me.com/hayatonka#100065&bgcolor=black&view=grid


i hope you all enjoy what we have created

cheers
ewan paterson
nagoya
japan

 

[cribbj]

That is one baaaad MKII!

 

[SuperRunner]

Subbed, VERY NICE.

Gotta find out why I don't get 10psi.

 

[SuperRunner]

What size was the smaller pulley on your M90? I had a 2.4" and got 6psi. Factory pulley i got ZERO boost.

 

[supracharged1]

hi

yes that is right, the standard pulley on paper worked out producing no boost , we could not have that
so we had another made up, from memory i think it was 73mm, or 70mm
at that stage we were hoping it was going to work , we had no idea, totally untested idea
there was no info on the net to help us when we did this,
it did work when we got it going and boost numbers seemed to support what we expected on paper
with that setup and nothing done to the inside of the engine we had 5.9 psi,
after we decompressed the heads and ported it , boost dropped to 4.9 psi
we wanted more boost, but with the RPM the blower was spinning ( on paper ) , comparing it to the factory graph for the m90 , the blower was simply at its limit at 14,500 rpm , there was no point in getting more boost , the only option was to upgrade to the m112 , which was totally worth the effort
Anybody trying to decide what blower to run , ( m90 or m112) i recommend fitting the m112 from the start , its simply alot better if you want more boost,
i wish we had done that from the start, good things take time
like most projects we all do in our mancaves , they must evolve

 

[SuperRunner]

Yes, M90 is a total waste of time.

I still want to know your current pulley size. Been boggling my mind why you get 10-11psi(3-4psi more than me) with longer duration cams, and ported head, just doesn't make sense.

You are probably running zero overlap on your valves, where I still have factory overlap, but at the same time, your engine flows better, unless your manifold isn't radiused.

 

[supracharged1]

hi

i will try and get one of the boyz to pop in my shed and get the pulley size for you
both blower and supercharger

we used kelford cams , supercharged spec camshafts, not really sure on the specs,
engine should flow better , enough alloy came out of the heads

i wonder if there are variations in crank pulley sizes ?

i do know there are variations in some of the idler pulleys on the engines
i had 3 engines here that had different idler pulley sizes ,
those engines are now gone so i can't check

it must be pulley sizes , either on the blower or the crank shaft
thats the only real way boost can be that much different ?

very interesting ,
maybe someone else out there can shed some light on this ?

ewan

 

[supracharged1]

sorry typo , " crank pulley and blower pulley"