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Malossi 166 on a 2T: spark plug, oil, and fuel octane?

 
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johnk
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Joined: 03 Sep 2018
Posts: 94

2003 Stella 2T & 2012 Stella 4T

PostPosted: Sat Jun 08, 2019 4:46 pm    Post subject: Malossi 166 on a 2T: spark plug, oil, and fuel octane? Reply with quote

I have a few quick questions about proper maintenance of a Stella 2T with a Malossi 166 kit. I didn't install the kit—engine mods are way above my skill level—and I'm struggling to find consistent information online.

Is B7HS the correct NGK spark plug for it (as opposed to the B6ES recommended by the Stella manual)?

Should I be adding extra oil to the fuel tank? If so, exactly how much? (I gather the 2T adds oil at about 2%, but I've seen a few people say the Malossi needs more like 3% or 4%.)

Does the Malossi want 91 octane fuel or higher (as opposed to the 89 recommended by Genuine for the stock engine)?

Is there anything else I ought to be doing differently from stock? Thank you!
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milly
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Joined: 26 Nov 2017
Posts: 37
Location: U.K.
lml star deluxe 125

PostPosted: Sun Jun 09, 2019 2:17 pm    Post subject: Reply with quote

Hi John,
Might be worth looking on facebook if you use it. There are a couple of U.K. forums on there that might be able to help with your questions.
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youkiddin
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Joined: 12 Aug 2012
Posts: 61
Location: michigan
09 stella

PostPosted: Sun Jun 09, 2019 6:19 pm    Post subject: Reply with quote

this looks like the manual for the 166 kit https://www.scooter-center.com/media/pdf/a5/73/fb/einbauanleitung_instruction_manual_m3117181_.pdf check your part numbers it you have any
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2003stellaDave
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Joined: 30 May 2017
Posts: 10


PostPosted: Wed Jun 12, 2019 7:15 pm    Post subject: Reply with quote

My 2003 Stella has a Malossi 166 on it. I just use regular gas and I don’t add any extra 2 stroke oil. It runs fine.

I’m not sure what spark plug I have in it right now. It’s best to have a few different ones on hand. Hot summers usually mean a different plug.

Always carry a spare sparkplug and a small piece of sandpaper in the glovebox.
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2003stellaDave
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Joined: 30 May 2017
Posts: 10


PostPosted: Thu Jun 13, 2019 1:01 pm    Post subject: Reply with quote

I have a B8HS in mine.
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BuddyRaton
Scooter Dork


Joined: 09 Sep 2006
Posts: 3875
Location: Boca Raton, Florida
2 - many

PostPosted: Fri Jun 14, 2019 8:23 pm    Post subject: Reply with quote

I run 7 or 8 in mine

The Malossi 166 is a hot kit. Hook it up with a 24/24 carb and expansion chamber and it will haul! I also have a P200 tree in mine.

I run 93 octane or 91 non-ethanol in all my 2T bikes. That kit likes high revs so it can heat up quickly. Higher octane delays detonation from heat.

I run 3% full synthetic..and I hammer that motor. At wide open throttle even an autolube is at a little over 3%. YMMV and I really don't want to start any oil war! Just letting you know that that's what I do.

I would suggest a Cylinder head temperature gauge (CHT) at a minimum. I also run an exhaust gas temperature gauge (EGT) and tach. Even so I have hard seized that motor twice.

Make sure your carb jetting is correct and it should be a great kit for scooting around on!

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