I'm not rushing things. It will be race ready for the 2nd race in November. Good thing Christmas and New Years don't mess up our race weekends in December.

I just broke in this engine by running it at full throttle and fully opened up high needle. I dont know what u guys call this method.....i usually use this method for all my nitro engines and they work quite fine.

Whats the best recommended run in procedure for this small engine is it the same.... i have not yet driven the car around so i still have a chance to correct it if i have gone wrong.

Cheers...

Full-throttle break-in is generally known as the Josh Cyrul Method:

http://www.cefx.net/tips/nitro/break-in/index.php

There are variations on this of course...

No, it is generally know as WOT, Wide Open Throttle...

i would highly recommend everyone to heat the engine up 1st with a hair dryer or heat gun, then idle for 1 tank, let it completely cool, then idle for another tank. then hit the track, run slowly for each tank leaning 1/8 per tank. on the 7th tank, u are ready for race. then tune it properly. i found this method works the best for us coz we have just broke-in 2 engines last week, piston & linear were perfect, m breaking in mine today. haha.

as for the WOT, i only tried it once, but the outcome is rather bad. maybe i didn't heat it up 1st. and by heating it up, u dun have to force the flywheel with a testpen anymore.

You are most welcome Jim, Don't hesitate to let me know if you need anything else.

Sam

Letting a new engine idle is the worse you can do....
Heating up a new engine before the first time you start it, is a must.

WOT is a perfect methode, probably the best there is, but there are very different opinions about this issue.
Just pick what you think is the best for you.......

Has anyone ever tried grinding off those little ears on the crankcase to better accomodate conventional header springs? I did that with my newest Sirio and I hope to see an improvement in header spring life.

guys, has anybody used this vantage pipe in their sirio engine???

http://www.vantageracing.com/site/v2.../SE120L-17.jpg

any feedback on this pipe??? is this suitable for a 5 port engine???

am thinking of upgrading my pipe and i have a sirio evo3 T5 engine... would i be better off with this skyline inline pipe??? any feedback on this pipe when used on a 5 port engine???

http://www.skylinercracing.com/store/P_24.htm

thanks in advance...

You don't need that prop starter. Just take the shield off and use your finger to spin the prop. If you don't like that idea, use a chicken stick. I use my finger and I don't have any problem starting the engine. Just prime the engine by blowing into the pressure line until you see fuel in the carb and then just start spinning the prop. It's easy.

Follow this link. This has some great info on breaking in your engines.

http://www.cefx.net/tips/nitro/break-in/index.php

Skyline pipe is better with the Sirio engine, you'll have broader power band and better runtime

no it the josh Cyrul method LMGDAO

guys... could anybody give me a good setup for the clutch clearance and the spring adj. nut position for my sirio engine... am about to install it on my mtx4 ... thanks in advance...

It depends on your driving style ,track, gearing etc, start off with the factory settings in the mugen instruction manual

Chad