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The J.ZED Head
Package Includes:
•
J.ZED cast alloy head
•
J.ZED cast alloy rocker cover
•
J.ZED cast alloy 3 x Weber Manifolds
•
J.ZED 1.9" inlet valves x 6
• J.ZED
1.5" exhaust valves x 6
• 12 x
1.5-1.55" valve springs to suit either flat
tappet or roller cam
• 12 x
chromoly valve spring retainers and 10deg
collets
•
Exhaust flanges (not shown)
• O-rings
to suit inlet ports and rocker cover plus rocker
cover retaining bolts
•
Manganese bronze valve guides fitted and honed
to suit the valves
• Tool
steel tungsten carbide valve seats, with
additives to impart high temperature lubricant
properties. Suitable for both unleaded and LPG |
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| We can supply
all parts of the J.ZED package
individually, so please let us know what
you require. |
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| These are
our all out throttle bodies for extreme
motors.
These
manifolds have, until now, been produced
to suit mechanical injectors and have
extra large 2 ¼” approx. 57mm
butterflies.
We are
now working on modifying these manifolds
to suit EFI and also reducing the
butterflies to 50mm which should suit a
wider variety of street or competition
uses. |
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| The
valves are custom made to fit the J.ZED
head.
The
inlets measure 1.9” and the exhausts are
1.5”.
The
valve stems are longer to suit the
1.5”-1.55” dual valve springs, thus
enabling valve lifts of .700 thou or
more.
Spring
retainers are chromoly and have 10deg
keepers.
Both
inlet and exhaust valves are
manufactured from 21-4N material and
have undercut stems to enhance flow |
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| The J.ZED
Weber manifolds will accept 45-50mm
carburetors.
We
have used them for 55mm units, but
things are getting a bit tight. EFI
units with Weber bolt pattern are
available from other sources and work
extremely well on the J.ZED head |
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| We
settled on items specifically designed
to suit our application and they come in
1:7 to 1 ratio.
These
platinum dual shaft rockers are designed
for high rpm stability.
Guide
plates are not required. |
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| When we
commissioned Kit Cullen to create the
casting patterns for these side plates
our instructions were to incorporate
“J.ZED HOLDEN” on them but Kit felt we
should commorate our 7.7 second runs
with our J.ZED HOLDEN 6 DRAGSTER, so
that’s what we got.
I
guess we will have to create some new
ones when someone runs a 6 second run
with the J.ZED HEAD!! |
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Long rods,
Short rods, H beam rods, I beam rods,
Aluminium rods, just let us know what
you need and we will
let you know if it's available.
Like wise for
the pistons, we can do thick crown,
lightweight versions, gas ported, etc. |
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