I was just guessing, ok maybe I'm wrong.

But I don't think they will remove it anyway.

How do you guy oil/setup your air filters? I want to know what products you use and procedures you use.

it all depends on the level of dust the given track has Theo

lil-no dust - lightly oiled inner outer
heavy dust - medium oiled inner light outer and vet wrap

many levels in between

this is the novarossi thread though , lets all talk novarossi !!!

awesomest engines on the planet

So what we do know is that there are differences in plugs, and over tightening can ruin a Nova button head.

So now we use an OS plug in a Nova without "over tightening." What torque value is that?

Not exactly using a torques wrench when replacing my plugs. And when I'm racing and all I have is a glow plug wrench and a quick glow plug change is required, I'm not exactly hoping my mechanic is thinking about how much to torque the plug.

Rather not take the chance.

I always thought that hole was for lubrictaion of the front bearing. If a crankcase and cranck is perfectly matched, you could will never have a problem with a front bearing leaking or sucking air to mess up your tune. In a perfect engine, the front bearing would only get luberication from that whole.

Well, maybe i was wrong.

Well I'm trying to remove the head of my engine, but he screws are stuck very hard. Do you think heating the engine up with a heat gun will loosen it up?

Thanks

Wise choice

Besides I prefer my glowplugs tight and fresh

amongst other things... LOL

Over tightening means gorilla tightening it.

Snug it and tighten it to where you feel is enough that it won't come out but not gorilla'd

Exactly my main point. Thank you.

yes heat it up to about 200* and you should get it loose then.

I contact Nova they sent me to their engine designer / engineer. I explained the debate and details and asked if he could determine if a OS plug is usable in a Nova Turbo button.. I'm waiting for a response once received I will post. I personally won't run OS plugs in my Novas cause of my experiences.

yes,heat it up,and use a wery big screwdriver.
If i dont remember wrong i did use a 4mm first.I could lurk it around in the screwhead and it did ruin the screws a little.
Then i find a bigger and thicker 5mm that fits just exactly in the screwhead.
I had to hammer it a little to fit.And with the bigger handle of this screwdriver it was a piece of cake to get it loose.

Get a 5.8 flathead screwdriver, thats all you need to remove it.

http://clockworkracingengines.com/co...-pcs-am-130992

Bigger handle=more torque, so it will remove em. I have those drivers, they're awesome.

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