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Skyline GTR Tuning Part 2
Nissan
Skyline GTR Tuning Part 2
Engine
Tuning Stage 2
Stage 2 of tuning is where things
start to get expensive as we need to upgrade many of the standard systems.
Nissan Skyline RB engines are known for the strength and the RB26DETT
is the strongest animal with regular maintenance and a safe tune 330+
awkw is possible.
Turbo
Selection
Many good turbo options are available for the Nissan Skyline GTR I recommend
turbo’s that will bolt onto standard manifolds, this will save time and
money in the long run. Popular models include;
HKS 2510 response close to stock with slight power increase
HKS GTSS responsive turbo with max power output of around 300 awkw
Nissan N1, Garrett 2560r, HKS2530 are similar to each other, a good compromise
between lag and max power, and 350+ awkw is possible.
Fuel system
The GTR fuel pump and injectors are good for levels up 265rwkw, any
more than this and you are starting to push safe limits. Popular upgrades
include pumps from bosch, walbro, and tomei. Nengun.com has many injector
and fuel pump upgrades available for the Nissan Skyline GTR just remember
to choose items which will support your power target and allow some
room for future upgrades if need be.
Intercooler Upgrade
The GTR Nissan Skyline intercooler runs out of its efficiency range
at power levels above 300rwkw and needs to be upgraded. Many aftermarket
bolt on kits are available for the GTR starting at around AU$1000 but
as with most things you get what you pay for. Be aware a small decrease
in throttle response may be noticeable due to the extra piping and larger
core size.
Airflow
Meter's
To improve the tunability of the engine its a good idea to upgrade your
airflow meter's this allows for finer tuning which will result in smoother
power delivery and make it easier for the tuner to produce a higher
peak power output . Popular upgrade choices include the Z32 and the
Q45. The Z32 is cheaper of the 2 but the Q45 will allow more airflow.
click for more information
ECU
If
you have not done so already the ECU will need to be upgraded as stated
before the Power FC is a popular option due to its price, ease of installation,
and use. There are plenty of other options that are superior to the
Power FC and allow many other tuning functions like launch control,
and the ability to use a map sensor instead of the airflow meter. But
the FC is still a popular and is proven to perform.
Head Gasket
Running boost levels above 1.2 may require a new metal head gasket to
lower compression and improve reliability. Opinions differ on this subject
so I think its best to ask you tuner.
Clutch and flywheel
The stock clutch will certainly fail quickly at this power level the
hardest part is finding a clutch that will handle the power yet not
make your car a pig to drive. Exeedy seem to be popular and reliable
choice and while you are upgrading your clutch a lightened flywheel
is well worth considering. This will help the car rev quicker but the
trade off is your car will loose momentum quicker to.
Cams
At this stage the Nissan skyline will benefit from a set new cams. The
outright power will be increased but the main reason for installing
cams is for a fatter torque and power curve. Upgraded cams can help
reduce lag, improve mid and top end power. Popular choice is tomei pon
cams as they fit without modification and are proven to give good results.
Please
use this as a guide only I recommend consulting a professonal before
carrying out any of these modifications. Nissanskyline.6te.net takes
no responsiblity for any problems you may encounter from following this
guide.
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