Webber dual carburetors = bigger pistons???


Asked by May 21, 2014 at 09:58 PM about the 1978 Toyota Corolla DX

Question type: Car Customization

Hi, I have a 78 corolla 2tc, I just
purchased some webers dual
carburetors that I want to install,
would I "HAVE" to get bigger pistons,
crankshaft, ect.... Or would it be ok
to just run the car how it is??

1 Answer


First, may we ask what Webers were you able to buy? 40 mm or 45 mm? Did they come with the manifold and throttle linkages? Bolting on larger dual carbs is just one aspect of engine modification. You might see better top end performance but if your driving is confined mostly to city travel as opposed to interstates, you might just see increased fuel consumption. To fully maximize the contribution of large side draft carbs, you have to go in deeper such as ported heads, larger valves, high compression pistons etc.

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