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Old 12-15-2009, 06:48 PM   #1
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Default anybody know the Sirio 21 BK EVO IV??

Hello, i'am looking for a good, fast and reliable engine for my truggy.
I've a price range of about $250.00.
I'am looking for a Jammin JPX 21, but for the same price, i can get a Sirio BK EVO4 STi.
I know the Jammin/Picco engine, i have 3 of them, but the Sirio seam to be a great engine too.
But spare parts seam to be harder to find.

Waiting what yout think guys!

Thanks
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Old 12-15-2009, 07:16 PM   #2
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Sirio evo 4 sti is a great motor. On my 4th gal never had a problem with it, Idles great.Great power all the way around, but in a truggy most people go with a cl7b sti for their truggy but for buggy its fast enough.If u go with a sirio evo 4 sti u need the 2013 pipe will give you the best low end and hardly lose any top end.My track has a 200ft straight and would not be pass by nobody with a 8 pound d8..Parts are very hard to come by since trinity took over.Smooth motor botttom to top and rev to the moon.My run time is about 8.30 to 8.45 with 8 mm insert am sure I can get much better a 7mm or 6.5 but never needed it good . If u need a connecting rod I think u can use a trinty extech rod or a werk b7 pro but dont hold me to it.
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Old 12-15-2009, 07:38 PM   #3
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The only reason why i prefered the JPX is for the parts availability. Nitro House and A Main have piston/sleeve/con rod, and in less than a week, i can have the parts at home.

Thanks for your help man
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Old 12-15-2009, 07:39 PM   #4
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Default some pic of evo4 sti

anybody know the Sirio 21 BK EVO IV??-rsz_1martinez_pics2009_452.jpg

anybody know the Sirio 21 BK EVO IV??-rsz_martinez_pics2009_449.jpg

anybody know the Sirio 21 BK EVO IV??-rsz_martinez_pics2009_454.jpg

anybody know the Sirio 21 BK EVO IV??-rsz_martinez_pics2009_458.jpg

anybody know the Sirio 21 BK EVO IV??-rsz_martinez_pics2009_459.jpg
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Old 12-15-2009, 07:41 PM   #5
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Default some more pics

anybody know the Sirio 21 BK EVO IV??-rsz_martinez_pics2009_464.jpg

anybody know the Sirio 21 BK EVO IV??-mid_rsz_1martinez_pics2009_470.jpg
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Old 12-15-2009, 07:59 PM   #6
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Very beautiful piece of art
I say that i want an engine for my truggy, but maybe i'll put it in my Kyosho inferno GT on-road car too.
And maybe this little mills should do the job with a 2 speed tranny

But, as i said before, the lake of parts support brake me to do the moove....
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Old 12-15-2009, 09:13 PM   #7
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The Evo 4 is an excellent choice. It's a short-stroke engine so it's got smoother bottom and higher top speed. A good substitute would be an Orion Alpha ABI .21 or .24 engine. They're similar in a lot of respects to the Sirio and they also have very smooth power delivery.
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