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J888PRB
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Joined: 16/08/2022
420r engine

Can you buy a crate 420r spec engine from caterham - nothing listed on site.

if not what's a good replacement engine?

look forward to hearing different views on this.

simon_h
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I take it that yours is broken? The only parts changed internally from the standard duratec are the cams, valve springs, dependent on year the rod bolts and the oil pump if dry sumped. The rest is just external dress parts.

Drakman
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I read some where that all Duratech engines fitted to Caterhams have a lighter flywheel fitted is that correct.  I assume the race type   Caterhams have a much lighter version though.  Does anyone know the actual weights of flywheels fitted for comparison?