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Old 09-28-2007, 10:59 AM   #1
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Default SIRIO S21-CL7 R STI

Hi,
Been thinking this engine for my 1/8th on road (currently running a nova rossi 35 plus 21). try looking in sirio thread but couldn`t find anyone running one, hence feedback on this engine would be grateful. Woz thinking of a RB xenon R, but heard they have critical rear bearing failure problem.

Thanks
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Old 09-28-2007, 01:07 PM   #2
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Looked at the Novarossi 35+21 LC? Plus 2 359? Picco P7 .21R Evo 2(aka P9R)?
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Old 10-09-2007, 07:10 AM   #3
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It's a very nice engine. Great mid and top end power with HIGH rpm.
A friend of mine used one in out last race and it was still breaking in so it was rich but it was FAST.
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Old 10-23-2007, 07:14 PM   #4
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Quote:
Originally Posted by xtreme888 View Post
Hi,
Been thinking this engine for my 1/8th on road (currently running a nova rossi 35 plus 21). try looking in sirio thread but couldn`t find anyone running one, hence feedback on this engine would be grateful. Woz thinking of a RB xenon R, but heard they have critical rear bearing failure problem.

Thanks
Tosolini ran the motor @ the worlds & before that he ran it @ 301 raceway motor is ballastic fast
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Old 10-23-2007, 09:18 PM   #5
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Tosolini ran the motor @ the worlds & before that he ran it @ 301 raceway motor is ballastic fast
what was the significant difference between toso's engine and collari's engine...what makes him (collari) bilistering fast?
i believe that toso is as good as collari, so what actually happen in argentina beside a very optimistic tire strategy...
why the sirio runners were having such a tough time to qualify in the top-10 list? a little light here would help...TQVM
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Old 10-24-2007, 04:24 PM   #6
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I think that the NR lineup was stronger than the Sirio, and that the tire issue on the final was the key (I think Tosso was little short on pinion (gear relation)) I was on Argentina and can say that the Sirios were fast, Tosso was 4th. there was a driver from portugal he was going with SIRIO and was very fast I think that the Sirio engine were good on Argentina

Have fun and I think you will like the engine
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Old 10-24-2007, 07:39 PM   #7
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why the engine runs on AAC sleeve and not ABC...can anyone shed a lite for me on this one...
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Old 10-24-2007, 11:49 PM   #8
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Andy, you can not compare the engines of the worlds finalists with the engines you can get in the shops. For sure not in performance and a event like that does not say about the lifespan.

Regarding the AAC, it is all about cooling but also expansion of the materials.
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Old 10-25-2007, 08:47 AM   #9
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Andy, you can not compare the engines of the worlds finalists with the engines you can get in the shops. For sure not in performance and a event like that does not say about the lifespan.

Regarding the AAC, it is all about cooling but also expansion of the materials.
THAT is TRUE you cant compare the "OFFICIAL ENGINES"!!! but on my heat there was a car with that engine and it was fast. I was using a NR 359 tune.
I like the lifespand of the NR, personaly is a GREAT engine

Hope it helps
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