Hi everyone im a new user from england, i driver a rover 216 which uses a honda D16A6 engine, now i know from looking round that the throttle body on this is 55mm.
The throttle body used on the rover 620 is apparently a 62mm one, and the engine is an F20??

its 1997cc 2.0 sohc nasp with around 129bhp

i dont think that engine would have a throttle body that large could anyone point me as to which engine this is and how big the throttle body is.

thankyou