As promised in our Casing Wars article, here’s the first delve into the latest offerings.
The GT Intercontinental casing comes from Brummie kit creator Richard Taylor of Gran Turismo; which is not a coach company for taking old ladies to the seaside, despite the name.
The GT casing is 100% designed and constructed in the UK using the sand casting method.
It includes the following features:
1. Reverse compatible to standard 200 casings and all internals including crank
2. Original look with finning and jack points
3. Utilises original mag flange
4. Utilises original side case
5. Crank on original centre line to utilise all current exhaust systems
6. Utilises any currently available ignition system
7. Thicker sections for strength and increased gasket face area
8. Properly positioned rear brake shoe pins
9. Enlarged rear axle bearing boss to accommodate bigger bearings
10. Pads for case mounted reed and boosts
11. Large gasket area for big capacity cylinders
12. Large crankcase housing can be bored to accomodate CR250 72mm stroke crank
13. Big-capacity, low-cost, water cooled 300cc cylinder conversion planned
14. Big capacity iron lined Inter-Continental air-cooled cylinder 330cc
15. 100% Made in England
GT Intercontinental sand tooling
What is interesting about this casing is its adaptability. It has been designed so that it can be machined to act as a replacement for the standard crankcase and accept all the original Lambretta components, or it can be used as the basis for building two large capacity conversions.
The water-cooled option uses a cylinder from a common watercraft engine which should in theory offer a very torquey motor at a relatively low cost, although water-cooling a Lambretta is not a simple job to achieve tidily and will require additional pumps and plumbing. This conversion uses a 64-stroke Lambretta crank based on oversized crankwebs.
The other option, using a 72mm-stroke motocross crankshaft is a large-finned air-cooled, iron-lined touring kit designed to be run with cowlings. It includes some very clever features to deal with issues like exhaust clearance. This kit will be 330cc and will also carry the Intercontinental name.
The targeted retail price for the crankcase is £500 and the anticipated arrival date is June. More details will be available on SLUK as we get them.