DanST Engineering are pleased to be able to offer this complete bolt on kit for the Volkswagen 1.8 'KR' engine. This kit will also fit the 2.0 ABF engine. The package consists of the following:
1x TIG welded danST Engineering Aluminium inlet Manifold
1x Set of GSXR600 SRAD 37mm Mikuni Carburettors
1x danST Engineering Carb Fitting Kit (4x Fluoro lined silicone hoses and 8x stainless mikalor clamps) in red, blue or black
NOTE: In some cases with this particular engine type (depending on engine/model and year) the coolant connection in the middle of the head may need to be modified or replaced to prevent it fouling on the carburettors (as with any individual carb or throttle body kit on these engines). We can supply a replacement connection if required for an additional cost of £50.
This kit is ideal for anyone wanting to carry out the popular bike carb modification as an alternative to the old weber twin 40 style conversions. Bike carbs offer excellent performance, reliability and fuel economy when compared to the weber alternatives. These conversions are very popular in both modified and kit car circles and provide a low cost, simple power upgrade not to mention a fantastic soundtrack!
The manifold is manufactured from high quality aluminium with a precision Water Jet cut 10mm thick flange and TIG welded 45mm (Outside Dia) runners with a 3mm thick wall. All internal joints are fully ported/ground to ensure a smooth flow.
All danST supplied carburettors undergo a comprehensive inspection, strip, ultrasonic clean and rebuild process as required. Every set of carburettors are run on our dedicated test rig to ensure smooth idle and transition to higher RPM (see our youtube channel for running examples). We provide the carbs with base settings (and necessary jets) to allow you to get your engine up and running/driving. However these settings are only approximate and it is therefore essential that the carb jetting is set up by a competent engineer/mechanic using the necessary wide band AFR equipment (ideally on a rolling road) to avoid engine damage.
FAQ’s:
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What Else
Will I need?
1.
Ignition.
The carburettors in this kit will take care of
the fueling of the engine, however you will need a means of running the ignition
system and this will likely fall into one of the following categories:
1.1)
Distributor Based Engine. If your engine is equipped with a
distributor as standard, this will work fine alongside the carbs to run the
spark. Some distributor based systems have a vacuum line from the original
inlet manifold. This vacuum reference gives additional advance at light
throttle openings to aid light throttle response and economy, however many
customers making performance upgrades including twin carbs simply opt to leave
this line disconnected to simplify the install. If you do wish to retain this
advance then our vacuum balance bar product must be fitted to our manifold to
provide a stable signal (see our shop). One single tapping into our manifold is
not sufficient and will result in a pulsed signal.
1.2)
OE Fuel Injection Engine. Depending on the standard
management your engine is equipped with it may be possible to retain the
standard ECU to run the ignition system. All original sensors and connections
should be retained (with the exception of the original fuel injectors) to
ensure the ECU has all the necessary inputs. If the ECU has a vacuum feed from
the original manifold our balance bar product (see our shop) can be fitted to
the new manifold to ensure the ECU retains this load reference. One single tapping into our manifold is not
sufficient and will result in a pulsed signal. If the vacuum line is not
retained it is likely that the ECU will revert to a basic 2D ignition map
similar to running a distributor.
1.3)
Standalone Ignition Controller. The ultimate ignition control is of
course a standalone 3d mappable ignition controller such as the NODIZ Pro (see
our shop for further details). This system replaces the distributor or OE
management system entirely and enables full control of the ignition map,
allowing maximum power and torque to be achieved at every point in the RPM
range. This ECU takes inputs from a crank sensor (this will need to be retro
fitted if the engine is not equipped with one as standard) and either a
throttle position sensor or manifold pressure (MAP) sensor. See our shop for
further details of the NODIZ Pro Ignition Controller.
2) Fuel
Supply
Motorcycle
carburettors require a fuel supply pressure of 2-3psi. This can be achieved
with one of the following:
2.1) Motorcycle Fuel Pump. Our bike fuel pumps are designed
specifically to work with the carbs in our kits. They do not require a fuel
pressure regulator and are an extremely simple inline install (in and out fuel
connections and a 12v supply). Bike pumps should be mounted low down, close to
the tank and horizontal. See our shop items for further details on our bike
pump kits.
2.2) Aftermarket electric fuel pump
and fuel pressure regulator.
If you are upgrading from another aftermarket carb setup is is likely that this
type of fuel system will already be in place. This can be re-used as long as a
2-3psi supply pressure can be achieved.
2.3) OE EFI Fuel pump and fuel
pressure regulator.
If the car is equipped with a fuel injection pump as standard the pressure will
be considerably greater (typically 45psi+) than the required 2-3psi for the
carbs. However there are regulators available that are capable of reducing this
pressure sufficiently from EFI to carb requirements.
3) Throttle Linkage. The bike carb cable connection is
relatively simple in comparison to other aftermarket carburettors with no
complicated linkages required. In most cases it is simply a case of adapting
the end of the existing throttle cable (inner and outer) to interface with the
carbs. We can supply a universal cable kit that contains all of the parts to
adapt an existing cable or make a cable assembly up (see our shop items).
4) Air Filters. It is important to protect your
engine from airborn dust and debris and danST Engineering therefore always
recommend running with an air filter fitted over our carburettor kits. We can
supply a range of Pipercross PX500 and PX600 filters custom made to fit any
carburettors used.
5) Rolling Road Tune. Our carburettors are all tested on
our test bed and a base set-up carried out. This will ensure that with the
carburettors installed your engine will start and drive. However final jetting
and set-up must be carried out using the necessary AFR equipment and under real
world load conditions (usually on a rolling road). This will ensure the maximum
performance is achieved and will avoid engine damage that can be associated
with running excessively lean or rich.
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What power
increase will I see?
Power gains
are highly dependent on other work carried out to the engine. As with any
induction modifications the carbs will better compliment an engine that has had
an exhaust manifold and system upgrade as a minimum. Camshafts and headwork
will of course further benefit the power and torque curves. As a rule of thumb
expect 10-20bhp gains with our kits on a healthy engine with a good ignition
set-up, depending on other modifications.
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Please see
our shop for accessories that will aid with the above as well as further parts
to further compliment your install. Additionally you may wish to consider our
range of ‘Deluxe’ carburettor kits as these contain a host of useful
accessories – these kits can also be tailored to your requirements. Further
advice and technical information is available on the danST Engineering
homepage.