Sirio engines thread
 

Discuss Sirio engines here. :cool:

you like beating other ppl to starting engine threads dont ya?:cool: :lol: :lol:

Yes,that way we don't have a hundred different threads opened which are all discussing different issues with a certain engine.It's maybe best to try to keep most of the info on a particular brand engine in one thread so it can also be used as a refernece and all the info grouped. :cool:

What's the best plug to use with a Sirio .18? Using 20% nitro

Thanks, Brad

.12 Sirio ABC (black head)
 

i heard a lot of good things about this engine, please can anyone tell me the bad things. i'm planning to buy this engine soon...:)

Re: .12 Sirio ABC (black head)
 

sirio carbs are bad so far. I took out the stock carb and sticked the engine with a novarossi carb and forget about the possible leaking problem.

Berwicknitro
if your engine has a std. plug (non-turbo) use Novarossi C7S or C8S, if your engine has turbo plug use Sirio S001720127. These engines love cold plugs.
AFM


Fuzzclub

If you are buying the Sirio .12 engine, get yourself the "new" Sirio Evo2, it is a rocket, I have one and it has an awesome high end.

Following is a report on the new SIRIO S12-TRP EVO 2, and it's comparison to the old. I only could get the text of my word document, because i don't know how to post an attachment with pictures, sorry.
AFM

"This new engine is in conformity with the 2004 regulations It is an evolution of the Sirio 12 TRP which was the first production Sirio . Having used the old 12TRP, I will benefit from it, to compare the 2 engines and to see thus what evolved. With the first glance, what one notices is the cylinder head which is larger, of blue color and the Sirio initials are engraved above with the name of the engine EVO 2. The carburetor is not any more with 2 adjustment needles as on the last TRP but with 3 adjustment needles.It is new and resembles much the one equipping the .21 Sirio Kanaï. Much more material around recovery screw (mid range needle), it is in this place that Sirio had problems with sealing in the past. Still a common point with the Kanaï, the casing evolves and integrates now an “O” ring to improve the sealing with the carburetor, moreover the mating plane is more significant. That should ensure a perfect sealing. The casing is equipped with new high speed bearings, which is too often neglected in this category of engine. The front bearing is a new more resistant model. As his big brother.21, the casing of the .12 is worked from origin with cuts at the bottom of the boost transfer and at the top of the exhaust transfer. The crankshaft has now more work in observance of the new regulations. The skirt is worked with beveled cuts on the side transfers .The exhaust transfer is modified at the top sides to match the cuts on the casing. The piston is machined and not molded.That ensures much better thermal and mechanical qualities.The rod is of the knife type with a central groove and 2 bronze rings equipped with holes for lubrication. The back plate is equipped with 2 "ears" in order to aid the side transfers. The S12 TRP EVO 2 is delivered from origin with a turbo insert. This insert is very thick and deeply fits in to the cylinder head in order to support heat exchange and to thus ensure an optimum cooling. The engine has 1.5 hp and 41,000 rpm, with a more progressive power band and a killer high end."

Manticore

Not to contradict you, but I have the "new" SIRIO S12 TRP EVO2
and the carburator works perfectly, it seems the problems are a thing of the past, I even tried the engine with a Nova carb just for performance comparison and didn't get any difference. The engine works fine with both. Ceck my previous post on a report on the new engine.
AFM

remeber i said "so far". I do sure sirio is improving their stuff and no doubt about it !!

Where's the best place to get the new SIRIO S12 TRP EVO2? ..

I got mine in Spain, at www.azormodelismo.com. Cost me 237.00 Euros.
Also i've seen it advertised at Kyosho-France, and in the USA Trinity is announcing it for 2004, but it isn't for sale yet.

Hope this info helps.
AFM

I'm awaiting the arrival of my Sirio .12 TRP (black head) and I was wondering what plug I should start with? I plan to run Trinity Platinum blend 30%.

If you can, offer up a plug and what temp it is, and if possible, comparible plugs in alternate brands.

Thanks

Plugs,plugs.OK:

For non-turbo head (std. plug):
Novarossi C6S mediumplug, for cool days
Novarossi C7S cold plug, sunny and hot conditions
Novarossi C8S verycold plug, for extremely hot days or high RPM running.

For Turbo head engines:
Novarossi C6TGF hot plug, for cool days
Novarossi C7TGF medium plug, best all round plug for most conditions
Novarossi C8TGF cold plug, for extremely hot days or high RPM running.

Don't have experience with other brands, sorry.
AFM

And does anyone have any specs?? ..

Thats cool, thanks for your answers...:cool:


Anyone else got any info on other brands of plugs they've used in their Sirio .12 TRP?

Does anyone know the web site for Sirio motors.

For the presentation of the new SIRIO S12TRP EVO2 go to the following web page http://www205.pair.com/kyosho1/kweb/ (it is Kyosho France) under Moteurs, it is a comparison with the old engine, it is in French but you can tarnslate the page with altavista transalator
The official Sirio site is not up to date.
In the Trinity web page they are announcing it for 2004 and has some specs on it.
I think it is being sold in europe only up to date, I got mine in Spain at www. azormodelismo.com.
IT IS AWESOME.
AFM

I have Murnan Modified Sirio EvoII's for sale. $230.00 + shipping. They come with the new carberetor and aluminum sleeve. 3 port turbo. They are extremely fast.

Sirio .15
 

I recently bought a Sirio .15 outlaw 5 port and I'm not impressed at all.I hope the .12 are better.My Mugen MT 12 will spank it.

I just got my Sirio! woohoo!:D

One quesiton....

I got the 12TRP with the blue heatsink head. What, if anything is different from the original black head 12TRP?

Did you get the new S12TRP EVO 2??? or is it just TRP, is it with 3 needle carb or 2?? does it have ABC or AAC sleeve???

Some TRP's came with blue or black head. The new EVO 2 comes with either blue or black but is larger in Diameter than teh old one. You should dissasemble the engine and check the interior parts and compare with the follwing:

For the presentation of the new SIRIO S12TRP EVO2 go to the following web page http://www205.pair.com/kyosho1/kweb/ (it is Kyosho France) under Moteurs, it is a comparison with the old engine, it is in French but you can tarnslate the page with altavista transalator

Hope it helps
AFM

Well what I ordered was just the TRP. It has a 3 needle carb and a the blue head seems quite large. It also has an o-ring to help with the carb sealing to the case. Thats about all that I can spot from the outside of the engine.

I have the S12-TUP Pro blue heatsink, 5Port AAC, 3 needle carb and also the O ring at the carb neck. Dunno whether this is from the newer batch. So far the engine is running very good, no tuning problems what so ever..:) and is one hell of an engine!!:nod: :D Is the new Evo2 better than this?

As i said before, go to the following link and compare.

For the presentation of the new SIRIO S12TRP EVO2 go to the following web page http://www205.pair.com/kyosho1/kweb/ (it is Kyosho France) under Moteurs, it is a comparison with the old engine, it is in French but you can tarnslate the page with altavista transalator.

AFM

I looked on the trinity site and compared them. One thing I noticed is that they say it comes with both the standard and turbo plug head buttons. Mine didn't come with both, so I'm not sure which engine I have. everything else was the same.

.12 AAC or .12 ABC
 

still choosing what to buy between these two 5 port engines.
please let me know which is better overall. i prefer high torque and top speed as well as easy to tune. from some drivers from our race track, i heard AAC is a bit hard to tune than the ABC.

Re: .12 AAC or .12 ABC
 

Then your engine is an OS instead. :D :D :D The ease of adjustment doesn't changes with the material of the sleeve, some engines are a bitch to tune and anothers are sweet to do, is a matter of luck. Anyway, choose whatever you want.

Seems that the AAC is more 'exotic' and here, at least, for the same timing wise, AAC P/S is more expensive than the 'ole' ABC... probably Grinder can shed more light about this, he makes magic daily with those engines.

Re: Re: .12 AAC or .12 ABC
 

\
hi Corse-R,
good to hear from you again, over here the AAC is more expensive than ABC, more popular too. probably because of the alloy p/s and its new.

Hey guys

The ABC is definatly easier to tune, there's not much difference in power between the ABC and AAC. When an AAC is tuned properly it has better top-end and is more fuel efficent than the ABC.

:cool:

COOL!!!

From my expirience ( 10 years with AAC, BRB and 17 years with ABC) can tell you-AAC is easier to make more torq ( for torq type aplication), BRB much easier to get top speed and last much lomger ( no need to buy new set, just keep replacing pistons) and ABC is just avarage power and life. AAC is more dificult to handle-small mistake and sleeve is bent.
In RC cars I found AAC much better works on tight tracks and BRB s more for high speed tracks. But in the mean time BRB can easy bring 8 minuts run time. There is a lot of thing behind material set ups and everything has logical explanation.
Defenetly price for BRB and AAC is higher in AAC case due to more dificult process to plate it by chrome and BRB is due to price of Berilium bronze. Bu t final price got to be no more then $10 difference between BRB, AAC and ABC.
I perconaly run only BRB and AAC sets and feel much more comfortable then with ABC-I can set engine for any track ( custom set ups ) within 10 minuts and will know -this is the best possible from particular engine.:nod:

Is the BRB an after market product only, if so who makes them and for which engines, I would like to try one.

Mid range to lean
 

I have a modified Siro 12 evo1, the mid range is to lean. I have compensated for it by running the bottom end rich, but I have lost some punch out of corners. I was thinking of shortening the low speed needle, has anyone had the same problem.

So I'll assume since I only got one reply(from afm), that everyone here uses the NovaRossi plugs in there Sirio???

Well, thats fine, as long as they're good plugs, work well, and have a reasonably good life span. The info on these plugs says that if I'm using over 25% nitro, to stick with the C7S or C8S. Since I'll be using 30%, I guess I'll be going with those.:cool:

I'm using OS turbo plugs...No 6 (hot ) fits like a T.:)

Re: Mid range to lean
 

Us a hot plug n match it with a pick up pipe to compensate the rich low end:)

PACMAN 25

Have you experimented with the lenght of the pressure line from the pipe to the tank??
This is what the late Ron Paris said about it......

"Did you know the longer the fuel line coming out from the tuned pipe the leaner you can make the midrange as the engine comes up to full power?
This is caused by the delay in time it takes the fuel tank and line to reach maximum pipe pressure.
Keep in mind that this tip should be used as a fine tuning adjustment on your motor at the track.
Experiment with different lenghts, between 10 to 17 inches is normal"

I have a SIRIO S12 EVO2, and as with all my previous engines I've used this tip with success. Every engine and carb is a whole new story.


Hope this helps.
AFM

Thanks I will give that a try, I don't usually run a long pressure line.;)

I am using a Sirio .12 ABC 3 port turbo with NR no7 plug and NR .12 inline pipe ... I found that it do not carry enough acceleration on my RR.
With TC body, the engine is around 115C ...

Centrax / 2speed setting is standard at the moment, what can I do to improve its power ?

PS : I do have an extra NR .15 inline pipe, with this help ?