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Id imagine that spec makes 150bhp depending on how lairy the cam is?
For a twink to be competitive it needs to make over 190bhp and there are only a few folk in Europe who are trusted to reliably build that sort of thing and because some of the race cars that need them are worth £££,£££ then they can get away with charging ££,£££.
If I were doing it again I'd do a 1500 pre xflow fo sho.
Or a G12 with a BRM V8. If someone will lend me a bazillion pounds.
Hefty
@lynx
So no comment on the Lotus twink... have just (in the past two weeks) finished rebuilding a crossflow block, ex unused racing block so everything is clean. Bored out with crossflow/precross flow pistons and special (ish as they are quite easy to get hold of) with a big valve pre cross flow head fitted with twin webers, a lotus elan air box and air filter, and makes more bhp than a lotus, and only 175cc more.