This latest model is a "testing the water" operation. The "Plug and Play" GT kit has been modified to include all the improvements we have learnt in cast iron running systems & manufacture. Additionally, we have extended the CAD designs to include a 225cc version for 200 casings with a 30mm manifold that exits on the L/H side.

Previously, a big block version was not possible without a complete tooling redesign. This is still the case and the CAD designs represent two completely seperate tooling sets.

As always with Gran Turismo designs, the product flexibility and quality is paramount. The new design is completely reverse compatible with original but will offer additional options of manifold and dedicated cylinder head with both plug position options.

Peak power delivery is expected to be in line with the existing GT186 @ 5800-6200 with a JL3 expansion pipe with a wide spread of torque. The 225 version should give some appreciable increases in performance over the small block version. This is down to the larger stud PCD permitting larger ports and geometry.

I am interested to hear your input, so send me a mail if you have genuine questions or comments.

Specification:

• Material Grey Iron
• Wider boost port
• Fractionally higher exhaust port duration
• Simplified and generous external rads
• GT186: High quality RD350LC piston 9 over-sizes
• GT225: As above, re-engineered to 70mm bore with 6 over-sizes
• Dedicated cylinder head design
• L/H manifolds, 25 & 30mm
• R/H manifolds 30 & 35mm

Using the 3D CAD files

• Once the file has downloaded perform the following.
• Press the green "continuous play" symbol
• Wait for the model to start rotating
• Press the green "stop" symbol
• Select the "rotate" tool from the menu
• Click and drag on the model with the mouse to any position
• Use the zoom and pan tools to see greater detail
• Right click items on items in the list on the left to hide parts you do not want to see. Using this process you can select which manifold you want to see or how just the piston and barrel intersect...have fun, you'll love it!
• New features! Move parts around and cross section assemblies
  

Click here to download the NEW drawing (3 mb)

For more information click contact.