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Obviously you have little or no experience with OS engines. They are by the easiest to tune, and are extremely reliable. Not everyone has 300US to burn on a sirio
 

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Well despite the fact that OS produce the most reliable, easy to tune
engines on the market....

Can I pay for someone to get a Vspec and .23 Sirio in a controlled
dyno?
 

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Trader said:
Well despite the fact that OS produce the most reliable, easy to tune
engines on the market....

Can I pay for someone to get a Vspec and .23 Sirio in a controlled
dyno?

Not likely. instead just look at who is winning the races?.


Look no offence about the OS engine you got. I use to be a big OS fan, Im just letting you know what happens at our track (and what some Tom drivers have told me always happens), the OS engines are a 2-3 racemeet engine AT BEST. but often loose comp after one heavy racemeet. YES they are very easy to tune, but when you are racing, that is the least thing you think about.


As for sirio, for being a young company (3 years old), they are the first engine manufacturer to get 8 out of 10 in the Ifmar championship (Including the top 5). No other manufacturer has done this, let alone done this in 3 years.


OS do not make race engines, Even their Vspec is jsut a 3 port (The reason why its so easy to tune). If you look after yours and run it fat (and use lots of oil), it should last you ages but once you push it to its limits it will fail in a tick. So be easy on it -thats my suggestion from experience and from other peoples experience.





Wow thats a long email, anyone for hotdogs?Edited by: Sirio_racer
 

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I second Sirio_racer's opinion as Sirio now do have the winning numbers to prove their quality & value for money.


Again it comes down to personal prefference and opinion which we are all intitled too.


If you want a goodall round engine for cheaper then go for an OS or if you want RAW POWER AND REVS with Race Proven Performance andReliability for a bit more then go the Sirio for sure.. i know i will cause i want to race and win also.
 

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As you said Sirio_Racer - Sirio has changed there quality over the years.
Considering I haven't had the chance to play with any of there newer
models - I hold judgment on there performance.

Alas, I have been in the pits in Moorebank for a few race meets - and
your above comment on the engines that run there is pretty correct.
Depending on who you talk to. I've seen the fast guys up there run the
VZ-B and newer Vspec. They had nothing but praise for it. Milage, ease
of tune - great power that was keeping up with the rest of the $600 +
mills.
Maybe times have a changed up at moorebank and people don't bag out
anything but Novarossis and RB's but I somehow think its still the
same... I would hate for AUSRC to have any of the crap that happens
at Liverpool rub off on it.

During the states and the dei rossi cup I ran the OS.12TR against the
rest of them (aswell as a few big meets at maitland). Having it keep up
with the rest of the pack down the straight talks for itself. Despite the
fact I had the ease of tuning and really awesome fuel milage.

Personally running a 2x .12CV's, OS-CVR'x and the newer OS.12TR
on the track - I can flat out tell you OS engines last a tad more than 3
race meets.
Putting myself up against drivers with everything from JP blacks, Nova
Rossi MT.12's to modified RB engines I can flat out say that OS holds it
own and keeps up VERY well with the expensive competing engines out
there.

In no way, shape or form to I claim to be Arai B. in my abilities - but
when the world cries Sirio because its winning in the worlds - it brings a
tear to my eye.
I chose to race the underdog - the ageing RC10 series with an OS
motor. Well funny enough one of the fastest 1/10th gas racers in the
country races the exact same setup.

<a href="http://www.frck.org/html/VM-2004/results/results_final_all.xls" target="_blank">Just
remember top drivers get paid to make anything look good</a>. All I
can smell around AUSRC these days is the burning of anything that's
not a sirio.

Edited by: Trader
 

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For the record it might be nice if *those* people who had some benefit from recommending Siro engines could publicly declare that benefit.


This would allow us to determine who has a conflict of interest in their recommendations.
 

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Discussion Starter · #32 ·
Well, well, well



Things have certainly heated up in here since i have been gone.



Just moved house and don't have the internet connected yet, thus am typing this from a friends house.



The OS has arrived and i must say it looks really good. Using the
new era models engine mount it fits perfectly without having to grind
off the bottom cooling fins. Very happy.



As i said before my reasons for this engine were ease of installation, COST!!!, reliability and fuel efficiency.



I don't really race, just bash, so my priorities are different than
others who are at it each weekend. however i would have thought
that fuel consumption would have been a big thing at races? I
heard the sirio likes to suck down the juice.



Anyways when i get reconnected to some fast internet plan (8mb a sec
) i will upload some pics and some vids. I just take them with
my camera and will endeavour to compress them.



Ozblue i think we will have to catch up and have a little race
somewhere to give a real world comparison of the sirio and os at it




An ausrc first?
 

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They are all good in their own rights i'm sure.


The OS has a well know reputation for power, reliability and quality.
Sirio is a younger company but is quickly getting a fantastic reputation for building awesome engines.
I can buy and sell Sirio engines and have some coming this week so maybe i might be a bit bias in that regard but as i said, honestly they all have their own purpose and suitability for each individual.
I am not sponsored by anyone (yet) and i have spent a small fortune on setting up my Revo with lots of spares and tools so i can keep going on a race day.
I haven't even lightened the truck much yet either.


Remember the Revo was designed by Traxxas after 2 years of intense engineering and testing to WIN RACES in stock format so putting add-ons like bigger engines and lightening the truck are just a bonus if you can afford it.


I think we have all got away from what this post is all about and that is "NEW ENGINE FOR THE REVO".
Please all if you have put another engine into your Revo let us all know so we can all learn from the goodpoints and bad points so we can avoid wasting money.
We are not talking about what engine is really better than any other engine but what works better or best in the Revo so lets get back to the topic and enjoy it please.


If anyone has done any transplants then post some pics for us to see and links to videos to watch if possible too.


Thanks Guys
 

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No problems. Being a bit of a Revo fan myself - I understand.

BUT - I have a duty to stick up for something when its needed.
 

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Thanks Trader but that will just keep the argument going and change the subject of this topic again so please put up a post about that topic if you want to argue about this stuff.
We all know OS is a good manufacturer as they have been making Nitro Engines since Adam was a boy.
Just like Mike Tyson was the World Heavy Weight Champ... until someone better came along and opened up a big can of whoop-ass onhis butt...



The only real thing for sure is CHANGE.


So lets get back to a New Engine For Your Revo...


Who else has done a transplant and has pics, vids or helpful hints???Edited by: OzBlueRevo
 

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I've seen a wasp.26 and anOS.21RG but thats about it for bigblocks. Someone was thinking about a mach some time ago. All killer engines, don't know about the drivetrain issues
 

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Discussion Starter · #40 ·
WOW! WOW! WOW!



I have run seven tanks through it so far and i am blown away. At
tank number seven i decided to let rip with full throttle and hit
second speed. i could barely keep it straight!!




I must say that i was frustrated one day then i figured out they had
the low speed needle wound all the way in from the factory. No
wonder it wouldn't suck juice.



With a 16 tooth clutch bell and a 36T spur (15/40T standard) the speeds
are phenomenal and i haven't even tuned it that much for
performance. I have just been slowly winding the HS needle in as
per the manual.



Pics and vids to come when i next go out. No where to host them atm
 
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