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in the works
A look at some of the projects that have taken place in the JMR workshop

semi hemi heads 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...
Volksworld Show At the Volksworld Show.
L-R: John, Paul and Dave Turner, Chris Beard.
JMR engine This is the partially assembled 2387cc engine that will power the new JMR street car.
engine1 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.
rear suspension Adjustable spring plates, aluminium trailing arms and vented dics.
rear suspension 1 Same again - different view. Note this was originally a swing axle floorpan. IRS brackets have been added.

 
broken ring and pinion 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.
Type 1, 2074cc 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.
mapping on the dyno 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.
Type 4, 2.7litre 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.
2165c race engine 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.
pinion mod 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.
5 speed 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!
autocraft This Autocraft case is the foundation for a 2387cc turbocharged, fuel injected street engine.

There'll be more updates on this one.
white beetle Kate Arthur's 1776cc engine; back for it’s first service and some Autometer gauges
DTA equipped Type 4 2165cc Type 4, with full JMR engine management. We fitted an Eberspacher petrol heater and fabricated a new (quieter) exhaust system
2276cc Type 1 Rob Tomlinson’s 2276cc Oval was in for some Autometer gauges and a Berg breather box. Stock 1300 gearbox is on it’s last legs!
traction bar, sway bar etc 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!
engine on dyno We had this Type 1 2276cc engine brought in for dyno testing. The crank pulley came off at 6000rpm! Don’t use chrome pulley nuts and washers!
blower parts 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.
engine internals The same engine again. Scat 86mm crank and 5.600" Pauter chromoly rods. Crank and cam both needed clearancing.

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