Originally Posted by
speedy G
was just wondering if there is much noticeable difference between the 3ports, N21r and N21bf. I take it they are not making the bf anymore?
There is a little performance difference between the two , not much but a little
Novarossi was using the extra blocks and casting leftover from the discontinued s821b 8 port engine . Now they have exhausted those they are using the standard 5 port block . The n21r is a pretty dam good budget engine IMO and with a little work
Hope this helps speedy
Viva la novarossi !!!