352LikesNOVAROSSI Engine thread....
09-21-2012 | 07:32 AM
#4006
Sure, I don't doubt that it does, but for the people reading this thread all they can see is you quoting somebody saying "4 port motors are better than 3 port motors" and then people losing their mind over it.
If there's a personal issue it should be handled in private. Airing it out in public just makes you all look bad.
If there's a personal issue it should be handled in private. Airing it out in public just makes you all look bad.
09-21-2012 | 07:54 AM
#4009
09-21-2012 | 07:56 AM
#4010
09-21-2012 | 08:21 PM
#4012
Guys, this is just a discussion. I too want to get to the bottom of it. The problem is the variables that we can not always control or predict. I am hear to learn like many other and to offer good advice if I feel 100% confident in what I'm saying.
Soo, I have two buttons I am showing below. Freshly removed OS p3 plug from #1 and freshly removed a nova c6 plug from #2 here are some pics and measurements:
Glow plug measurements-width of tip
Nova c6~4.65mm
OS p3~4.80mm
Glow plug measurements-length of taper
Nova c6~2.00mm
OS p3~1.50mm
Button measurements-width of plug hole in combustion chamber
Button #1(OS p3)-4.79mm-started off with nova plugs then went to OS plugs.
Button #2(nova c6)-4.88mm-100% nova plugs from new
Both buttons were cleaned with Laquer thinner before photo.
Button #1
Button #2
Both plugs
Sorry if pics are bad, best I could do.
Soo, I have two buttons I am showing below. Freshly removed OS p3 plug from #1 and freshly removed a nova c6 plug from #2 here are some pics and measurements:
Glow plug measurements-width of tip
Nova c6~4.65mm
OS p3~4.80mm
Glow plug measurements-length of taper
Nova c6~2.00mm
OS p3~1.50mm
Button measurements-width of plug hole in combustion chamber
Button #1(OS p3)-4.79mm-started off with nova plugs then went to OS plugs.
Button #2(nova c6)-4.88mm-100% nova plugs from new
Both buttons were cleaned with Laquer thinner before photo.
Button #1
Button #2
Both plugs
Sorry if pics are bad, best I could do.
I measured Nova vs. Os plugs around 5 years ago. The taper on the Nova is longer but as I remember the angle and bottom diameter were very close. (measuring with an optical comparator) What I concluded was that Os does not tap the head button as deep and they relieve the plugs to compensate. So if you try to put a Nova plug in a Os button it bottoms out on the threads before the taper seals. I actually relieved a Nova plug so it looked similar to the Os and it worked fine. Now I can see if someone is having trouble with Os plugs ruining a Nova button it may be because there is less surface area and if you overtighten the plug it opens up the hole slightly. I will measure some plugs next week and report my findings.
Rex
09-22-2012 | 12:11 AM
#4013
Short video
Here is a short video of practice. HT P5 9853ss..Mugen buggy.
http://www.youtube.com/watch?v=ZWnXvjOdI-Q&feature=plcp
http://www.youtube.com/watch?v=ZWnXvjOdI-Q&feature=plcp
09-22-2012 | 07:24 AM
#4015
Tech Addict
Joined: Dec 2007
Posts: 543
From: Brandon, MS
Now I can see if someone is having trouble with Os plugs ruining a Nova button it may be because there is less surface area and if you overtighten the plug it opens up the hole slightly.
09-22-2012 | 07:29 AM
#4016
I measured Nova vs. Os plugs around 5 years ago. The taper on the Nova is longer but as I remember the angle and bottom diameter were very close. (measuring with an optical comparator) What I concluded was that Os does not tap the head button as deep and they relieve the plugs to compensate. So if you try to put a Nova plug in a Os button it bottoms out on the threads before the taper seals. I actually relieved a Nova plug so it looked similar to the Os and it worked fine. Now I can see if someone is having trouble with Os plugs ruining a Nova button it may be because there is less surface area and if you overtighten the plug it opens up the hole slightly. I will measure some plugs next week and report my findings.
Rex
Rex
thanks Rex...that is exactly what I thought....... Same taper angle, same thread pitch... same bottom diameter.... plug seats perfectly with no issues....
.....Issues only from over tightening ......... For those who don't know Rex is a tool and Die maker with access to the most precise measuring tools and techniques.........An Optical comparator is not a joke.......
09-22-2012 | 09:12 AM
#4017
Suspended
iTrader: (7)
Joined: Nov 2000
Posts: 1,012
I measured Nova vs. Os plugs around 5 years ago. The taper on the Nova is longer but as I remember the angle and bottom diameter were very close. (measuring with an optical comparator) What I concluded was that Os does not tap the head button as deep and they relieve the plugs to compensate. So if you try to put a Nova plug in a Os button it bottoms out on the threads before the taper seals. I actually relieved a Nova plug so it looked similar to the Os and it worked fine. Now I can see if someone is having trouble with Os plugs ruining a Nova button it may be because there is less surface area and if you overtighten the plug it opens up the hole slightly. I will measure some plugs next week and report my findings.
Rex
Rex
thanks Rex...that is exactly what I thought....... Same taper angle, same thread pitch... same bottom diameter.... plug seats perfectly with no issues.........Issues only from over tightening ......... For those who don't know Rex is a tool and Die maker with access to the most precise measuring tools and techniques.........An Optical comparator is not a joke.......
.....Issues only from over tightening ......... For those who don't know Rex is a tool and Die maker with access to the most precise measuring tools and techniques.........An Optical comparator is not a joke.......Now people, feel free to try an OS P3/P4 plug and see if you can notice a difference, just don't over tighten it
09-22-2012 | 09:12 AM
#4018
I measured Nova vs. Os plugs around 5 years ago. The taper on the Nova is longer but as I remember the angle and bottom diameter were very close. (measuring with an optical comparator) What I concluded was that Os does not tap the head button as deep and they relieve the plugs to compensate. So if you try to put a Nova plug in a Os button it bottoms out on the threads before the taper seals. I actually relieved a Nova plug so it looked similar to the Os and it worked fine. Now I can see if someone is having trouble with Os plugs ruining a Nova button it may be because there is less surface area and if you overtighten the plug it opens up the hole slightly. I will measure some plugs next week and report my findings.
Rex
Rex
thanks for confirming Rex
09-22-2012 | 09:19 AM
#4019
Suspended
iTrader: (7)
Joined: Nov 2000
Posts: 1,012
09-22-2012 | 09:26 AM
#4020
I don't think they will make it smaller or remove it from their crankcases. They want to sell as many 17011's/17012's as possible and if they find vacuum return ports make the bearing lifetime shorter, and make a leaky front bearing more obvious, they wouldn't remove it...I don't think
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