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Old 11-20-2009, 12:35 AM   #16
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Also take a look to the OS plugs, they are working very good!

If the Max plug is the same as the GRP is not to tell, the body is indeed the same but thet does not tell about the wire. But there must be a reason Max is shifting to another glowplug.....
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Old 11-20-2009, 12:38 AM   #17
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Guys, I have a standard rossi plug, #7, its for my JP FX-21 B5N. What McCoy could I substitute it with? An MC-8 work ok? Or I should stay away from those for this engine?

Last edited by spawn_x; 11-20-2009 at 12:57 AM.
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Old 11-20-2009, 01:06 AM   #18
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Originally Posted by spawn_x View Post
Guys, I have a standard rossi plug, #7, its for my JP FX-21 B5N. What McCoy could I substitute it with? An MC-8 work ok? Or I should stay away from those for this engine?
For standard plug motors, MC8 and MC9 are great.
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Old 11-20-2009, 01:07 AM   #19
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Originally Posted by Roelof View Post
Also take a look to the OS plugs, they are working very good!
I've always been leery of that because the opposite, a Nova plug in an OS, leaks like crazy. But for whatever reason it seems to work OK.
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Old 11-20-2009, 02:58 AM   #20
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Quote:
Originally Posted by fulcrum2 View Post
+1 on wingracers post. At the time being Novarossi plugs dont work. They just dont glow any more after a short time despite the fact that the filament will still look like new...
I do notice this after a while - rather strange but from using RP6 on my OS .12 engine these plugs just kept on going and going and going!

So can someone answer the question will the OS RP7 glow plug work on the Nova? Will there be plenty of clearance etc - anything i need to look out for?


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Old 11-25-2009, 06:57 AM   #21
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someone posted you can use sirio pllugs on a nova base motor but you shouldn't because the sirio is picco base motor same as Idm motors and has a different tappered angle,
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Old 11-25-2009, 07:01 AM   #22
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Sirio is Picco based?????????
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Old 11-25-2009, 08:36 AM   #23
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Yes, from model year 2010 onwards, haven't you heard about it, Roelof?
Both will be made by Novarossi. A cousin of my neighbors uncle who has a colleague that spoke to someone in Italy told me so...

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Old 11-25-2009, 05:47 PM   #24
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I was a long time Novarossi plug user, until I tried an o'donnel plug, and have never looked back.

Cheaper, glow better, last longer, more consistent, and in my opinion a better quality plug.

Just compare the glow of a new Nova plug against the glow of a new O'donnell plug.
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Old 11-25-2009, 09:58 PM   #25
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last race meet i changed a nova plug, it went well for 5 minutes (i heat) then died. The plug still "works" ie the engien still cranks over but you don't have power, and the engine acts as if it's rich.

Also, the engine sounds louder when the plug is in this state for some reason.

I've used nova plugs all the time without an issue, maybe this was just a faulty one? who knows. But no harm in trying other plugs if they fit.
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Old 11-26-2009, 01:32 AM   #26
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Unless something has changed in the last few weeks, Sirio motors are not Picco based, they are made by Star. I have heard that IDM plugs are Sirio's instead of Picco plugs but I do not know if that is true.

What I DO know is, Sirio plugs work GREAT in Nova motors.
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Old 11-26-2009, 07:07 AM   #27
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Quote:
Originally Posted by Roelof View Post
Sirio is Picco based?????????

Just the plug taper is the same and also the IDM plugswere made by Sirio at one point in time. There is no relationship of the engine from Picco to Sirio. The taper is different between the Sirio and the Novarossi. This is the difference. The thread pitch is the same this is why they will thread into the head. But the taper itself is what is different. Where it seals into the head.
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Old 12-01-2009, 05:34 AM   #28
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Quote:
Originally Posted by wingracer View Post
Unless something has changed in the last few weeks, Sirio motors are not Picco based, they are made by Star. I have heard that IDM plugs are Sirio's instead of Picco plugs but I do not know if that is true.

What I DO know is, Sirio plugs work GREAT in Nova motors.
I use IDM plugs in my red dot, or should i say used!
I believe that the sirio plugs are compatible to idm jlr picco
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Old 12-01-2009, 03:56 PM   #29
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I use IDM plugs in my red dot, or should i say used!
I believe that the sirio plugs are compatible to idm jlr picco

Yes they are
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