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Mighty K
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mods welcome to another episode of
Mighty K mods proudly supported by just
car insurance now a lot of car
manufacturers bring out their cars with
really small turbos to make them feel
really Punchy when you take them for
that first test drive that's right
they're nice and Punchy down low but if
they're super small you don't get that
top end power and if you really really
really really really want to release the
full potential of Your Banana then you
need big balls that's right big ball
bearings in your turbo that's right so
today we're going to be upgrading the
turbo on the Forester which is
notoriously small it notoriously has no
top end and we're going to be replacing
it with a ball bearing turbo of an SDI
it's going to be
mad upgrading your turbo requires
removing parts of your cooling oil
intake and exhaust system so it's
important that you understand exactly
how all of these systems work but before
we can put the new turbo in we need to
get rid of the old one and that means
removing the engine cover intercooler
blow off valve and intake Parts which
all need to come
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off the intercooler is bolted to the top
of the turbo with two
bolts love that sound look at that just
a little mad tray to put all your things
you put your kind of bike chain your
pram
Wheels your baby seat Clips all the
other stuff that Forester owners need
access to regularly have you had stuff
fall out of your engine bay before when
you've been driving around oh just an
engine but that was in my
GTI I love that look at that Martin
they're T of everything they're like the
Germans but from a different part of the
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world so when you're working on your car
if there's any pipes or cavities that
are facing upwards then there is a
chance that stuff's going to fall in
there so you should plug them up with
some kind of rag or something uh these
are proper turbo Rags that we got from
Japan when we were shooting turbos and
temples these are literally made to go
in your car and fill up uh fill up holes
so things don't fall in them you can
also use headbands or JDM undies and
stuff like that but make sure it's JDM
so it's extra mad you're just going to
put that inside the turbo
there and leave the bit that says turbo
rag hanging out and there it is it's all
done uh next up we're going to take off
the heat shield and then we're going to
get under the car and take off the dump
it's a good idea to spray the bolts
around the turbo and heat shield with
some penetrating fluid like WD40 this is
particularly important if you're working
on an older
car cuz td4 is like the soccer mom turbo
and you're going to like a proper hey
I've got real boost type turbo yeah I
like sucker moms though they're mad can
be really I don't know you gone there no
man yeah you have no dude what about
that woman Cheryl she was in her 40s
dude their kids played football oh
football mom call it what you want um
all right heat shields coming off you
may remember this was already modified
to um fit the dump pipe on before so
that's just um normally it kind of hangs
out here so that's just been grinded off
a bit and um there it is man there's the
little turbo look how small it is it's
so small isn't it it's all mini and
stuff look at so small
but so accessible it's just right
there it's great let's take it
off inst better poor Cheryl she was nice
man the dump pipe connects the turbo to
the rest of the exhaust system it needs
to be removed so we've got to Jack the
car up to get to it and don't forget
your axle
stands so to get the dump pipe off we've
got to detach it from the actual car it
attaches to the gearbox here and then to
the gearbox cross member back here and
and then it joins the rest of the pipe
so those bolts are all going to come off
and then finally we take them off from
the back of the turbo and it slides off
and then we can pull the turbo
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out so a lot of time with jobs like this
with stuff that done up really tight
dump bulbs suspension stuff like that
you can have a lot of trouble if you
don't have tools with enough leverage so
keep that in mind when you're buying
stuff get tools that are long and you
can get heaps more torque onto
them ratcheting Spinners are very cool
and can save you lots of time
remember to disconnect any sensors from
your exhaust before you pull it
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out next the bolts on the back of the
turbo can be removed some of them are
easier to access from above and some are
easier to access from underneath so the
easiest way of doing this is to get a
friend to help
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the oil feed line is removed from the
top of the turbo then the water lines
are removed and some old bolts inserted
to the hoses to stop the coant running
out and making a
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mess then the turbo can be lifted up and
pulled out of the
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car this model of Turbo called a td4 has
come standard on wrx's and Foresters for
years they spool really quickly but when
pushed they can become inefficient and
they just don't deliver the top end
Turbo Power that a lot of people are
looking for when they're modifying their
cars okay so this is the td4 this is the
turbo that comes on Factory delivered
ny9 wrx's and Foresters now the thing is
this is a great turbo for some kind of
low-end pickup but it doesn't have a lot
of top end and because it's a physically
small turbo it runs out of puff so
anybody that's planning to tune their
car you can't really squeeze that much
power out of it so you got to put on
something bigger now what I'm putting on
is
this this is a turbo that I bought
secondhand from eBay this is a vf34 so
this originally came out on the JDM STi
it's physically much figure it's capable
of making a lot more power now
originally I wanted to put on a vf52
which is the turbo that comes on the new
S edition Foresters because I knew that
it was just going to be able to bolt on
and would work straight away this here
is actually off an ny9 Forester it does
have some slight modifications and
custom stuff done to it to make it work
um but the reason that I bought this is
this when it's new would probably cost
you up to a couple of, I got this off
eBay for only $400 which is literally
like a third or a quarter of what I was
planning to spend now interestingly the
guy who bought this originally the shop
that he got it from uh they kind of call
it a custom turbo and they've ground off
all of the information here so they
don't actually claim that they know what
the turbo is or they certainly don't
publicize they know what it is but it is
a vf34 it is a ball bearing turbo it's
from Japanese STI it's going to bolt on
there and it's going to give us a lot of
extra top end power which is what we're
missing with the td4 Okay so
turbochargers not everybody's got one
everybody wants one but not everyone
understands exactly how it works it's
basically a giant air pump uh exhaust
gas goes in through there it goes out
through there spins that wheel which is
connected via a shaft to the front which
is the compressor side of it it sucks
there in through the front and spits it
out pressurized through there um that's
all controlled by this thing which is
the wastegate uh that's set to a certain
pressure so when it sees a certain
pressure in that unit there it pulls the
waste gate and opens it that flap there
like that and that uh regulates amount
of exhaust flowing through it and that's
what controls boost pressure so if
you're using a boost controller you're
actually just controlling the way that
this thing works and that is not that a
turbo the vf34 core contains ball
bearings allowing it to spool up quickly
and tolerate large amounts of boost now
our turbo requires the water and oil
lines to be swapped from the td04 this
meant we had to do some minor
customization to attach the waterline
brackets
okay so we're using some brand new
genuine Subaru gaskets Mar was pretty
upset that we had to use some new Subaru
parts um but that's is what we're doing
he's almost calmed down so we're going
to put that down there on the up pipe
now getting the turbo to line up with
everything is probably the hardest bit
so this is the new 34 we got to get the
up pipe lined up here we got to get the
intake lined up here and then the oil
return there so it's kind of like a
three stage Rubik's Cube and getting all
of those things to meet up is probably
the hardest bit so that's what we're
doing
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now okay so next up we're going to bolt
the turbo down onto the up pipe there
we're going to return all of the oil
feeds and the water lines on there and
then we're just going to bolt on the
dump pipe uh put it all back together
and then we're ready for some mad
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boost a talk wrench is a really good
idea on all the turbo bolts and you also
need to make sure you a m washes on the
water and oil banjo
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bolts this time we are going to get it
so the gaskets on and then up a bit more
that's it got it yeah it's
on hand tighten everything and check the
dump pipes in position then tighten the
dump nuts and
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bolts this looks kind of creepy
actually only move at the smallest
amount each time that's fine man it's
working this is why ratchet span is the
freaking best
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we need to modify the heat shield to
clear the wastegate actuator
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rod we're all good so the heat shield
can get bolted back
on next up the intake intercooler and
blowoff valve can be rein
installed the last thing to do is start
up the car make sure everything's
working and then bleed the cooling
system and make sure there's no air
locks expect a bit of steam if you've
spilled any water or coolant on your
engine while doing the turbo
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swap now it's not just about slapping on
a big turbo and hoping for big Power
depending on what kind of car you got
and depending what kind of existing mods
you already have you may need to look at
doing more things to support it and make
it work properly and we've got a full
episode on this Mighty Car Mods turbo
supporting mods so make sure you check
that out now the other important thing
is that we need to do a full tune on the
Forester to make sure that we're getting
the most out of the turbo and also
making sure that everything's running
safe so in the next episode of Mighty
Car Mods we're going to be doing a full
custom tune on the dyno to make sure
that everything is running mad and
everything is running safe and mad and
awesomely soccer M Forest like it should
now we got a couple of cool things
happening on the mighty kod shop as well
including the new officially endorsed
rake loves this sticker these are
available with free shipping anywhere in
the world you can get them at shop.my
mods.com hello Martin see you mate see
you later mate I'm going to go eat a
gecko scr and apparently it tastes fishy
eat it with a chopstick okay
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C
welcome to another
oh you got me twice dude touch the tip
you good