Originally Posted by
houston
really?
that is not true man , novarossi is all about bringing the best they possibly can , the only real challenge they have right now is competing price wise with all the low cost and some lower quality engines .
that 17011 is the baddest front bearing on the planet , if you think you need to plug "the vacuum port" do it but i guarantee it is not necessary , its a total non issue . btw , many other manufacturers have the exact same "vacuum port" , why is it only exclusively being talked about for novarossi engines?
flavor of the week to some
plug explanation
in two different novas i did plug "the vacum port"after inspection,in both cases it seems to idle better.This is done while the bearings are stil new,not leaking.
Maybe it is the tuning,maybe it is the vacum i dont know.
When that is said i did already have 3 novas.
The first one 21-4 was never pluged and lasted around 40 liter,didnt change or do anything to it.
Second one 21-4 did only last around 30-35liter then the clips holding the piston pin did came of making scratches.
The first one i then did change the bearings,and only the bearings just to try.
It was almoust impossible to tune right,but i did get pretty close.
Then i did see the video about this hole needded to be plugged.
So i did.Then it was more easy to tune and it did idle better.The bearings was not enough to make it good after 40 liter,i did expect this,but anyway...
I also have a 21-4btt and i did have a runaway with it ruining the bearings.
This one had around 12 liter.When i changed to avid back and front bearings i also pluged the vacum port.
And it idles better and is more easy to tune.I hardly need to adjust the needles anymore.
So as i can see it it is not so importent to do it and maybe i loose a few second on a tank or something i dont know.But it also dosent hurt to plug the vacum hole