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Old 12-29-2010, 05:24 AM   #1
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Default Questions about the Sirio XXX.

Hello.
Well i was considering this engine http://www.rcmodelstore.com/catalog/...oducts_id=5151 based on the XXX looks nice and i can get Sirio parts nationally so there is something i should know about these?Little problems and such,oh and about a suitable tuned pipe wich one?
TIA!
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Old 12-29-2010, 07:26 PM   #2
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Sorry to bust your bubble, but that isn't a Sirio XXX - it's a Siim S12T engine that is based off the Sirio XXX lineup.
Siim is a Spanish company that gets their engines made by Star Motor Engineering in Italy which also make Sirio engines, but this is NOT a Sirio engine.

The Sirio XXX lineup have blue coloured heads, but I wont say don't get it.
If it is the same as the S-XXX, then a good pipe for it would be the Sirio 2653 combo.
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Old 12-30-2010, 04:16 AM   #3
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Thanks for your reply.I noticed that is based off the XXX but I'm still considering other options like this one GRP promokit GS01K-12TC and what happened to Ninja ?
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Old 12-30-2010, 06:52 AM   #4
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Default +1 GRP 12

Quote:
Originally Posted by 30Tooth View Post
Thanks for your reply.I noticed that is based off the XXX but I'm still considering other options like this one GRP promokit GS01K-12TC and what happened to Ninja ?
We use them, have two running reliably over two years, older one even happier with a used RB rod and piston, the engine is not on winning pace with modern .12ci, also have Sirio XXX and it's much faster but less reliable.

Smooth power band, well manufactured, good metallurgy, great value. They run quite cool, push them too hard and they'll break fins and it ends up a bad engine story, don't say I didn't tell you so.
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Old 12-30-2010, 07:36 AM   #5
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Thank you very much Blis!That's good to know.
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Old 12-30-2010, 02:52 PM   #6
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Yes, the GRP engines are fantastic engines, but are not all that powerful, but in return you get great fuel economy. My friend has the GRP Tuned version, and that is fantastic where I run, gets a few laps to warm it up and tune if needed, no refuel and finishes the race with 1/2-1/4 tank left in it!
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