Re: Re: .12 sirio aac piston and sleeve
 

someone also told me that its ok, thanks for your reply:)

Where do I start?
 

I got a used Sirio .12 Std (black head) that has about 10 races on it. I dont have a manual and I went to the site but im still unclear about something. When I get ready to attempt to tune the engine, what intial settings do i start with? This would be helpful especially since getting the engine I already played with the needles to see if they moved smooth.

hey when i recieved my engine all needles were flush
low, medium and high so give that a try.

Re: Where do I start?
 

High Speed Needle - 5.5 turns out
Low speed Needle - flush with the end of the slide
Mid Range - Flush then one turn out

AFM

Sirio pipes ?
 

Does anyone know if this pipe will suit the EVO II. This is the only sirio pipe i can find for sale in the UK.

Sirio Tuned Pipe & Manifold Ref: S12200006

Do you guys know what sirio pipe is suitable for this motor. I just wonder what pipes they where running at the worlds and where i can get one from ?
:D

That's a good question Roki... I can't find a Sirio pipe here in the states either... I now some are using the Trinity .12 pipe... I'm using the STS tuned pipe with a picco build header... I'll post the parts numbers for you when I find them.. The STS on road .12 pipe has great low end and mid-range... The picco header fits the STS pipe and helps to give more top end... One thing of note... I raised the exhaust port on my EVO II sleeve a tad bit the help increase the top end as well... The power was everywhere... But that's for another posts... As for the Sirio pipe, anyone who has info where we can buy one.. Please post. I tried the Border RC online shop, RC-Mart and RC-Model.. No luck... I wanted to try the Siro pipe to compare it against the STS pipe with the Picco header designed for the Nova's a Sirio motors... Hope the info helps...

RC_Alan

Re: Sirio pipes ?
 

Yes Roki. That is the Sirio pipe suitable for any Sirio engine, in fact they only have two sets, the one above for most cars, and the
S12200007, for Serpent cars, which gives more clearance at the header end for the side pulley.
And yes it was the pipe used at the worlds.

Alan, you are right, Sirio pipes are not sold in the states. What i've found is that apart from the Sirio pipe, the best second choice is the M.Mielke pipe if you wan't to enhance top end.
Now, according to RC Car Nitro Magazine in the Dyno test made to the Sirio Collari engine in the January issue, they got the highest power ever on a small block engine, with the Novarrosi
51602 pipe, and a standard 90º header.

AFM

Re: Re: Sirio pipes ?
 

AFM, is there an online shop that sells the S12200007?

Re: Re: Re: Sirio pipes ?
 

Sow, you my wan't to try and ask here http://www.hobbyredaelli.com/

AFM

Thanks for the info.

I am awaiting a responce from local Sirio dealer to see if they can supply S12200007 .

I will let you know the outcome.:nod:

Thanks AFM... I tried the Yokomo Milkie pipe as well as the RD Logics turbo II, RB x12, and the OFNA Mega pipe... The best power I found from top to bottom was with the STS #22604 pipe, now being sold through RD Logics along with the Picco Manifold/header.. Part#51904... I pick up the header from Nitro house and the pipe from STS direct... The Picco header is much stronger then the stock STS header and a tad bit shorter for more top end... The power was everywhere!!! Top and mid and low!!! I've read that the LC Sirio is a short stroke motor... What is the EVO II??? Short stroke motors like that Yokomo Milkie pipe and Nova Mugen pipes... My EVO II didn't... It was much faster at take off and miderange by far with the STS/Picco combo and after I raised the exhaust port on the sleeve a tad... and massaged the crank alittle... My motors top end was ballistic!!! That being said... Gearing and fuel does make a difference as well.. 35% O'Donnel's before testing and after... I'm running my EVO II in my G4/Mongoose... Question, I was thinking of picking up the LC-Sirio AAC sleeve and conrod as a back up/replacement for my stock ABC EVO II sleeve. Will the LC-AAC sleeve and conrod work in my EVO II??? Oh, cost of the STS pipe was $50.00 and the Picco header was $39.00.

RC_Alan

Well Alan, I don't know if the Yokomo/Mielke pipe has the same dimensions as the one made for Werks Racing, who distributes the Collari Sirio, but when I contacted Andrea Rossi (Sirio), because I couldn't get a Sirio pipe, and asked him what would a second choice be, he told me the M.Mielke....so I guess maybe Werks has order a special Sirio model....you might wan't to check it out.
My personal experience....after trying almost every pipe available,
I finished with the Sirio original pipe, but moded to have silicone coupler, instead of fixed in-line, so I get the perfect tune for my track and racing conditions.
So actually I agree with you that gearing, fuel, traction, and I might add weather conditions, can offset a pipe very easily, so tuning flexibilty is a must (I hate fixed in-line pipes).

Going to Sirio and Collari engines.
Every part between them is interchangable, except the cranckcase, and the cooling head, which is were L. Collari made it's low center gravity mod, and in the Mauro Collari hand moded engine there is a lot of work on timing, porting and etc.etc.
So your last question's answer is YES.

BTW technically all Nova, Picco, and Sirio based .12 engines are long stroke engines, but differ in conrod lenght, which is another issue, so going back to Sirio and Collari they would classify as
mid-lenght conrod engines, versus short conrod engines like Nova based engines (except the RRL3). Also Picco based engines would fall into the mid-lenght conrod class.
Having told you that....try experimenting your Sirio with Picco pipes....????

AFM

No.. the only place that carries picco pipes in my area are selling them for about $100.00... I have a bunch of pipes just laying around... I know that Andrea Rossi said to try the Mielke and I'm sure he knows alot more about his motor then I do... I did and when using the Yokomo Mielke and the STS #22604 along with the Picco header, it was like night and day.. The Mielke is tuned for top end and what I found with the EVO II, it caused it to lack a little on the takeoff/low end... The STS pipe gives it great low to midrange and the shorter Picco header helps to give it more on the top... Hey... I'll be happy when someone starts importing the Sirio tuned pipes here in the States... I can't even find in on the Border RC... WoW... And Trinity is selling there pipe even though they sell the EVO II motor... I might give the Werks picco pipe a shot after I pick up my Speckrum reciever for my M8 radio later this month... :nod: No more crystals and no more Channel sharing...

RC_Alan

has anyone tried the sirio 12 wcr

thanks

Evo II TRP I approval
 

Tested my Evo II TRP I with S12200006 Sirio pipe a few days ago in my G4.Wow what can i say i was well impressed with this engine.Managed to get about 8 mins from a tank it ran at about 250f/260f which is slightly hotter than i thought but any richer and it was noticeably slower.

The only disapointment was the pipe doesnt have an EFRA stamp on it and for £63 GBP i thought that was a bit of a cheek.
:D

I just ordered my Sirio S12 WCR edition it should be here next week. :D

Where did you get it?

rcmart.com, here is the link to the engine:

Sirio S12 WCR

the sirio wcr have 3 ports only ??? or 5 ports coming out:confused:

If it is a World Cup Replica (WCR) 3port engine, don't expect to see a 5 port engine coming out, because it would be a replica of nothing.

If you wan't a 5 port Sirio you'll have to buy the S12 TUP model.

AFM

Would the crankcase and crankshaft timings of the TUP and WCR be different then?

Would it be the better combo if a person would theoretically get a WCR engine and replace it with a TUP piston sleeve if he wants to get the baddest 5 port Sirio engine?

Don't think it would work, because the crankcase of the WCR and the regular EVOII have a special cut on top of the exhaust port area to match the wide cut on top of the sleeve exhaust port.
The 5 port TUP has different exhaust port arrangement.
If I'm not mistaken TUP and old Sirios have Cranckcase Part Nº
S12 111100, and EvoII and WCR have Part Nº S12 111101.
Also TUP and IFMAR EVOII's share same crankshaft. WCR has different and better timing.

If you wan't a mean a.. kicking 5 port Sirio based engine...get the
L.Collari 5 port AAC engine.....free advice...jajajaja

AFM

AFM

Thanks for the info... But if the WCR is not even in AAC, I will not venture into it.

Hi
Im thinking to get this engine S12 TRPI Evo2, but a have question about the heatsink. In teamtrinity has photo of this engine and the heatsink has a different draw like the old sirio black heatsink, i visit the sirio site and the engine heatsink is different and the photo is of a engine with Threaded Shaft but in specification say SG Shaft, im bit confuse. I want this engine for a v1rr with centax
Thanks

Evo 2 S12 TUP 5 port
 

Hi Guys,

Can I race tune now my engine? I plan to race the engine in 4 days time....I broke it in 2 days ago..i followed sirio's break in procedure from their website....i was able to burn 13 tanks already...I already leaned out the HSN a bit on the 10th tank....Im planning to run again tomorrow and will try to lean the LSN coz it is still rich(factory's default).

Im not yet satisfied with the power, will leaning the LSN increase its power considerably?

Thanks!!

The Sirio S12 TRPI Evo2 is the Ifmar Roar legal engine.
It does come with the big blue heatsink, slide carb, and SG crank.

In Sirio engines, whenever you see the letters AF at the end of description, it means it has threaded crank, and are now found on Sirios site under off-road engines. S12 TRP AF would be the Evo2 on threaded crank.

The on-road .12 engines are under Touring engines, and all of them have SG cranks.
Picture and description is correct for the TRPI. The only incorrect picture is the one for the TUP engine that shows a threaded crank, and should be SG.

Hope it helps

AFM

Re: Evo 2 S12 TUP 5 port
 

NO!! Your LSN should be flush with slide body. Keep leaning your HSN for power increase. Set it so your Temp gets to aroud 250ºF.
after a hard run over one tank. When you come to pits, your idle should be stable for about 30 seconds, and when you try to accelerate again it should bog a little but not enough to die. If it doesn't adjust LSN accordingly.

AFM

evo 2
 

Ok, when and what will I still have to do so I can already race tune it? And Can I already subject the engine to the stress of racing a 1hour or less finals? One thing that tells me my LSN is rich is that coz after throttling, my idle doesnt return to its normal level unless I blip the throttle.......

Re: evo 2
 

You said you allready have 13 tanks on it, so i'ts allready Broken-in. You can safely tune it for racing.
If your idle doesn't return to normal, does it mean it stays high and you have to blip it so it drops to normal??? If that is the case It means it is lean on the LSN, so you have to open it a bit. It has to be flush with slide body.

AFM

Alright....so its the other way around.....thanks a lot!!

In Trinity site say:

S12TRPI 'EVO 2'
.12 Standard Racing Engine
'EVO 2' SG style crank, 3 ports, 'EVO 2' ABC piston/sleeve, rear exhaust, slide carb

and have a photo of the engine, it has threaded shaft and a differentl heatsink like old .12 sirio engine black heatsink, but its blue, without atom draw

Look at trinity site www.teamtrinity.com > Nitro Stuff > Sirio Engines

Thanks

Don't worry, it's just an old wrong picture. Go by the description.

You can buy this engine cheap at www.speedtechrc.com
They have the right picture if that's what worries you.

AFM

s12 trp i evo 2 is the same engine used at the IFMAR worlds by Adrein ? ?

No the engine used by Adrien and all of Kyosho Team is the one beeing sold now as the S12 WCR (World Cup Replica).

www.rcmart.com out of Hong Kong has them.

AFM

Go straight to here:

http://www.rcmart.com/catalog/produc...ducts_id=11291

AFM

I cheched this engine out last night on rcmart aswell. and also on the sirio site...... But on the sirio site..... i noticed something.

S12 TUP has the same identical specs except the 5 port on this one and the 3 port on the wcr.... .

I believe that would give more power to the TUP eng ?

what do you think ?

and i already bought a RD logics inline turbo II pipe so i dont need it with a pipe if they would sell without the pipe i would take it.

Cheers
ZiiZo

Not neccesarily, the 5 port Sirio has not been updated, and more ports doesn't mean automatically more power. A well tuned 3 port can be faster.
On the other side, the WCR has all the latest updates, plus the mods used in obtaining the World Cup.
With respect to the pipe, in my experience Sirio's work best with their own pipe..and i've tried them all...but i'ts a question of trying what suits best for your track.

AFM

The new S12 WCR is a Evo II TRPI modified to run better in Sao Paulo track? Or Sirio made this version thinking about leading this modifications to the normal S12 TRPI?
I am with fear not to have parts for it (piston etc), or Sirio manufacture new parts?
Sorry for many question
Thanks!

If the Sirio WCR is an evolved S12 TRPI, then you could buy the internals of the WCR and make your TRPI the same as WCR.
Just ask your dealer for part numbers of WCR, and Bingo. I'm sure Sirio has made parts to maintain WCR's

AFM

Efra legal crank
 

Hi Guys,

I need to try and find some where that sells the TRP"E" crank.
I currently have EVO II TRP"I" which isnt efra legal. I cant seem to find this part,any help would be appreshiated.

Roki :D