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This is a batch of heads part way through the
machining process. They've all been semi hemi cut, mostly for 1776cc engines
and all feature a three angle valve job. |
| We attended the
Volksworld Show in March and took along the chassis of what will be the new JMR
street car. It features Porsche 944 S2 IRS rear suspension, complete with
Brembo 4 pot aluminium calipers and vented discs on all four corners. The
engine is based on an Autocraft case, 2387cc, turbocharged, intercooled and
fuel injected via full DTA engine management. Here are some pics from the
show... |
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At the Volksworld Show. L-R: John, Paul and Dave
Turner, Chris Beard. |
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This is the partially assembled 2387cc engine that
will power the new JMR street car. |
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Another view of the same engine. Note positioning of
the turbocharger; situated outside of the engine bay in order to keep air
temperature entering the cooling fan as low as posible. |
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Adjustable spring plates, aluminium trailing arms and
vented dics. |
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Same again - different view. Note
this was originally a swing axle floorpan. IRS brackets have been
added. |
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In some cases, the Type 1 ring and pinion has to
be considered a consumable item when drag racing. This 3.88 R&P was fitted
to a Modified turbocharged low 10 second car. It lasted for approx 35 passes.
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This Type 1, 2074cc engine was brought in to be
fitted with the full JMR Engine Management System. Previously equipped with
carbs, the engine made 116bhp on the dyno. The only other mod in addition to
the engine management was a 3 angle valve job. Power increased to 132bhp with a
nice flat torque curve. |
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Part way through the mapping process. The control
box (right hand), allows me to adjust the fuel mixture and ignition advance to
obtain maximum torque for any given rpm, any throttle position. |
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A customer imported this 2.7 litre Type 4 engine from
Sweden and brought it in to be dyno tested. He'd been told it made 180bhp. On
the first pull, it peaked at 181 bhp. This is the first time I've seen another
suppliers engine live up to it's claimed output. With a minor tweak to the carb
jetting I got a max figure of 185bhp.We're fitting it to a 1958 Karmann
Ghia. |
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My old race engine. Freshened up and ready to go into
the back of another race car. It will be mated to the close ratio trans
below. |
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Here, I've modified the pinion shaft to take a
tapered needle roller bearing. When set up correctly, this helps eliminate
pinion shaft movement, thereby prolonging ring and pinion life. This
particular gearbox is a close ratio four speed, for drag race use
only. |
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Berg 5 speed. I've strengthened the trans case by
welding on two magnesium plates to the underside. This is going into a
1951 split! |
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This Autocraft case is the foundation for a 2387cc
turbocharged, fuel injected street engine. There'll be more updates on
this one. |
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Kate Arthur's 1776cc engine; back for its
first service and some Autometer gauges |
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2165cc Type 4, with full JMR engine management. We
fitted an Eberspacher petrol heater and fabricated a new (quieter) exhaust
system |
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Rob Tomlinsons 2276cc Oval was in for some
Autometer gauges and a Berg breather box. Stock 1300 gearbox is on its
last legs! |
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Here you can see the sway-a-way
rear anti roll bar (IRS), Berg front trans mount, Berg traction bar and Koni
shocks. Upfront, it has an uprated anti-roll bar and CB Performance dropped
spindles. Car handles well! |
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We had this Type 1 2276cc engine brought in for
dyno testing. The crank pulley came off at 6000rpm! Dont use chrome
pulley nuts and washers! |
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A Dick Landy supercharger and a 650cfm Holley four
barrel carb. I'm using these on a Type 1 2387cc engine for a road going
1303. |
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The same engine again. Scat 86mm crank and 5.600"
Pauter chromoly rods. Crank and cam both needed clearancing. |