I ran the 12-3ST for most of last year and it's a great engine.
In the beginning I tried to run it with the 2630 as recommended by NR and the engine was a dud. Very high temps and no power.
Somebody recommended the Max 2602 pipe then and all of a sudden the engine became a monster.
It doesn't rev as much as the older short stroke models, but you can compensate with gearing.
I modified the crank timing on mine slightly and now it also revs....
In the mean time we've found out that the 2630 pipes are not performing very consistantly. One is good, the next is crap. Also, they are very sensitive to damage. A small dent can make them useless.
Originally Posted by
CraigM
Hi Guys, I have a few quick questions
How are the plus 12-3SCT (or 12-3ST, etc) engines? I read a post saying they are more torquey than the 353, but how do they compared to other brands for top end? Other engines I'm considering are the OS TZ Speed Spec 2 and Sirio Evo 4 (I hear sirio bearings give up quickly). I'm also interested in how the novas compare for longevity, and ease of tuning (and how they hold their tune)
Also what is the best all around pipe for the engine? I've used a 2630 before and really liked it
Thanks