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2.0L
Duratec Cylinder Head & Components
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We
decided to develop the 2.0L Duratec a bit further in 2007. Simon,
our cylinder head designer had done extensive work on the Duratec,
the original standard valve head worked extremely well but since
then he carried out further development & with the new high
port head that we have found, this has allowed him to significantly
improve the airflow of the cylinder head. We also used a slightly
bigger valve on both inlet & exhaust, this gained a 15% increase
in airflow over our current cylinder head that had been developed
for our original 270 kit, but more importantly the airflow that
we gained had not compromised airflow at lower valve lifts.
In
order to get an exact result as possible, we took our existing engine
which had been used all season in the SBD Westfield, replaced the
cylinder head retaining all the original components used from the
firstbuild, then took the car back to TracknRoad, where
the car had originally been mapped & with the help of the 2
Steves made adjustments to the original programme on our MBE management
system. The engine was initially run on 4 injectors, this showed
294bhp/189lbft, & then on 8 injectors which should 304bhp/195lbft.
This showed a significant increase of approximately 20 bhp over
the original tests. We are now developing the head further by running
a bigger valve & have found that the 36.8mm valve is the largest
size suitable to gain an increase in air flow. We have currently
seen a 5% increase in flow over the 36mm valve head. Combined with
other improvements in port shape, we expect to acheive up to 315bhp.
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are based on cylinder heads being supplied by customer, however we can supply
new cylinder head, please contact us for details. All the Duratec head performance
figures are based on the 2008-on Focus head. Earlier heads are likely to
produce 10-15bhp less. The maximum performance figures shown are based on
using our components; we cannot confirm what your gains would be with non-SBD
components. The results should be similar for the 2.0L & 2.3L Duratec,
just produced at different rpm. Please refer to our kits for more information. |
| HEAD-M-DURA-02-SV-CNC |
CNC
port work on brand new head potential up to 275bhp |
| HEAD-M-DURA-01-SV-CNC |
CNC
port work on used head, which requires seat cutting & therefore
re-shimming potential up to 275bhp. |
| HEAD-M-DURA-01-BV-CNC |
CNC
port work with +1mm valves (36/31mm), STD guides performance up to
305bhp |
| HEAD-M-DURA-02-BV-CNC |
CNC
port work with Valve sizes 36.8 /31mm with new seats & Bronze
Guides still in development expected to be up to 315bhp |
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BLT-STUD-DUR-2.0L
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BLT-MK-STUD-DUR-2.0L
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| Head
stud kit for 2.0L Duratec. We have found on high output duratec engines
that small amounts of movement occurs between the head & block,
which causes damage over time to the faces & gasket. This will
eventually cause failure, so by replacing the head bolts with a head
stud kit, this clamps the head & block assembly more securely. |
Main
stud kit for 2.0L Duratec. With the higher rpm/load which comes from
a tuned duratec engine, we have seen movement between the block &
main cap cradle, which would be catastropic, so we have replaced the
bolts with a stud kit, which clamps the block & cradle together
securely. |
| BLT-STUD-DUR-2.0L
Instruction Sheet |
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INL-MAN-DUR-01
Duratec
Inlet Manifold 2.0/2.3L including o-rings
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GSK10-DURA-01
Standard
Head Gasket for 2.0L Duratec
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GSK3-DURA-C
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High
Specification Metal Cometic Exhaust manifold gasket for 2.0L
Duratec with no cut-out for EGR thus improved for competition
use
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SBD
Motorsport Ltd, Unit 15, Red Lion Business Park, Red Lion Road, Surbiton,
Surrey. KT6 7QD. Tel: 0208 391 0121.
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