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robhume

Building my Eleven

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+1 on using a cross flow. Either that or a huyabusa, not much else will fit without a bulge... I had to use a period engine for class regs , so put a 1600 xflow in mine. Using the World Cup engine mounts (I got from burtons) makes fitting the cross flow really easy. (And easy to do Engine swaps too)Really the only clearance issues is the rocker cover filler which you must move to the rear - but remember to baffle it really well..Trust me... bad things happen otherwise. I actually sealed mine  with a cap and ran a separate breather, after a spectacular oil leak at high G right hand cornering...(see pic of the cap I made which slides into the relocated filler)

With twin webers, the manifold likely will need to be remachined to change the angle of the carbs a tad. The front fuel banjo and carb cap is still very close to the hood in any event. You’ll then need the side entry dizzy cap too. Speaking of bad things happening, and poor location of distributors..talk to your Weber expert about sealing the choke vents if you’re racing ... both elevens here have spontaneously combusted due to racing conditions and the inherent  dcoe design where high g causes fuel to exit the carbs... and guess where that goes...

As for sumps, the beauty with no cross member, you can make a shallow full length  winged baffled wet sump, with flappers etc and still hold 5 litres.  On 13” rims  and Avon  acb10’s I  had 50mm ground  clearance at full droop, for racetracks this was fine ... but I still had a bash plate under it just in case of excursions .  I race my car and have had no surge issues at all with the wet sump I made.  Dry sump will gain you another 40mm  and the ring gear will likely then be the impact point. All lessons hard learned... EBEB46C0-3967-48B3-B16F-6B090D3FB547.jpeg.498d7bde78fcf2941ded00e34a420148.jpeg

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