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Prewar Bentley 4 1/2 litre repair and rolling road

Prewar Bentley carburettor repair service and rolling road tuning

A beautiful prewar Bentley 4 1/2 litre came in for repair this week. Although it was recently restored it now refused to start. The owner also wanted to get the car on the rolling road. We checked the usual suspects, fuel and spark. Both of which were present. However, the spark plugs were pretty black so we put a new set in. Further investigation revealed that the needle valve in the float bowl of the rear carburettor wasn’t seating. This meant that fuel was pumping straight through the carburettors jet and into the engine. We removed the float bowl to strip, clean and reassemble it. Problem solved. Additionally, we found a fuel leak from the bottom of the SU carburettors jets. A new set of seals was required and once fitted, the leak ceased.

Lastly, we strapped the big prewar Bentley onto the rolling road for tuning of the SU carburettors. The tune was not bad but after come fettling of the needles it was spot on. The engine is still pretty new so we limited the RPM. Now that the Bentley starts and drives the owner can get back to running it in with the knowledge that the fuel mixture is correct.

  • Prewar Bentley carburettor repair service and rolling road tuning
  • Prewar Bentley carburettor repair service and rolling road tuning
  • Prewar Bentley 4 1/2 litre rolling road tuning
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Fresh Race Preparation for a Fiat 1100 Historic Racer

We’ve been asked to carry out a fresh race preparation on this Fiat 1100. The car is already a race car and was purchased recently from an auction. The car is unknown to the new owner so they wanted to get it checked out before hitting the track. Additionally, it’s good to set a baseline on the rolling road so we can monitor the health and performance of the engine.

We started with a thorough front to rear checkover and spanner check. Then, we made a report of areas we thought needed attention. Overall, the Fiat was in pretty good shape. We had to source a handbrake cable and fabricate some 1-piece wheel spacers for the rear. Next, we attended to the electrics and got all the lights working. Following that, we got the engine running and and set the car up on the rolling road. Now the fresh race preparation on this Fiat is complete we are satisfied it works and that it meets safety standards. Next we head to Brands Hatch so the new owners can start enjoying it.

  • Race preparation of Fiat 1100
  • Race preparation of Fiat 1100
  • Rolling road tuning of Fiat 1100 race car
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Custom Cages roll cage and seam welding for FIA ’65 Mustang race car.

FIA Mustang race preparation seam welding

We just finished working on this FIA 65 Mustang body shell. To build a great race car you have to start with the body shell. A lot of work goes in to the body before the engine or suspension are considered. The body shell wants to be light and stiff. For an FIA Mustang race preparation we remove anything deemed superfluous to save a little weight. Additionally we look for any area that would benefit from stiffening. On a big muscle car like this we concentrate on the front. First, we seam weld around the front suspension towers. Next, around the inner wings. Then we join the inner wings up to the front bulkhead and a-panels. Finally, we seem weld the door and window apertures.

The roll cage goes a long way to stiffen the rear of the body. Especially this T45 historic roll cage from Custom Cages. The Mustang Notchback roll cage features double crosses at the back as well as a pair of bars between the bottom of the main hoop and the rear stays. We feel the Custom Cages T45 historic roll cages are the best by a long shot. They are light, strong and beautifully designed. Also, they are a very snug fit meaning there is less to encroach on the driver.

If you are interested in race preparation for a Mustang or any other car or roll cage installation feel free to get in touch. Click here for our contact details.

  • Custom Cages T45 Mustang Historic roll cage installation
  • Custom Cages T45 Historic FIA Mustang roll cage Official supplier and fitment centre
  • FIA Mustang race preparation and roll cage fitment
  • FIA Mustang race preparation seam welding