Originally Posted by
Sp Racer
I used a standard, out of the box .21 VZR at the recent Vic. state titles , the best lap I did in the semi final was only .3 slower than the winner of the A main.
Every heat the engine just got faster and faster, 5 minutes was easy ( I used a Novarossi 2015 pipe ) - added 0.1mm head shim and used a P7 plug.
I loved the linear power band , and to be honest, I didn't feel as though I was lacking power anywhere against all the more fancied names (GRP, RB, Novarossi)
I reckon stick a ceramic rear bearing in one of these, a little tickle with the dremel and in my opinion you'll be rapt ! ( have not done this yet )
These engines would have to be the best bang for the $ out there
Did you completed the final ?
From my personal experience, this engine is not suitable for circuit with long straight ( not okay for flowing high speed circuit ). The engine become sucks after 23 minutes..... It become lame and sometimes die ( DNF ).
Becareful with rear bearings.... if it feels gritty, quickly replace it. A while ago before I know this, I keep using it and the engine eats lots of glow plugs.