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Old 11-07-2003, 09:09 AM   #166
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Just want to let you know I picked up one of your motors from Lee at winners circle,Your motor kicks AZZ.Great work on it looking forword to running more of your motors
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Old 11-07-2003, 09:13 AM   #167
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Next dumb question,

What do you have to do to run a turbo plug in a non turbo engine?

serpentracer1, you won't be dissappointed, I had him do a rossi pixy black for me and the engine runs very well and is easy to tune when weather changes occur.
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Old 11-07-2003, 09:19 AM   #168
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Oh im not just got back into nitro after a 4yr layoff and getting used to tuning the motor myself I used to have a motor tuner before all I did was chassis setup so im getting used to it and the thing is flying
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Old 11-07-2003, 09:54 AM   #169
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Default Re: ROAR Rule Changes

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Originally posted by JJ187RC
Grinder,

Just found out that Turbo plugs are going to be allowed for all nitro classes in 2004. I think for .12 touring, the limit is still 3 ports. The question I have is do you see any advantage running a turbo plug versus a non turbo plug with the type of modding you do on the engines or any engine in general?
Because of turbo plug design ( will not go to details), turbo plugs are much better then regular on any type of engines. This advantage is easy visible if right tunning is done ( not modding-tunning). So you can use turbo plug every where and should have at list 5-8% of power gain easy ( in some cases was indicated +15 %).
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Old 11-07-2003, 10:04 AM   #170
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Quote:
Originally posted by JJ187RC
What do you have to do to run a turbo plug in a non turbo engine?
Change the non-turbo button head to a button head that fits a turbo plug?
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Old 11-07-2003, 10:05 AM   #171
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Quote:
Originally posted by JJ187RC
Next dumb question,

What do you have to do to run a turbo plug in a non turbo engine?

To use turbo plug on non turbo engine, you need first replace regular head botton to turbo head botton and then make sure to use advantage of turbo plug right-you will see difference right away.
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Old 11-07-2003, 10:40 AM   #172
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Just out of shear curiosity, do you do any mod work on OS motors, Grinder? I may pick up one of your Sirios, but I may keep my OS as a fun knockaround motor.
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Old 11-27-2003, 03:03 PM   #173
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Wink Murnan Modified Sirio Evo II

Modified Sirio Evo II Crank
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Old 11-27-2003, 03:05 PM   #174
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Wink Murnan Modified Sirio Evo II

Murnan Modified Sirio Evo II Aluminum Sleeve
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Old 11-27-2003, 04:10 PM   #175
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Uriah,

is that crank scoop supposed to be ROAR legal?
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Old 11-27-2003, 04:19 PM   #176
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Quote:
Originally posted by stefan
Uriah,

is that crank scoop supposed to be ROAR legal?
For sure not Efra. IFmar sould release the update rules about engines soon. Donīt know exactly the ROAR rules, i think that as long as the internal crack hole has the same diameter, is roar legal
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Old 11-27-2003, 04:21 PM   #177
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Default Re: Murnan Modified Sirio Evo II

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Originally posted by Grinder
Murnan Modified Sirio Evo II Aluminum Sleeve
Nice work Uriah
Did you try already to work in the exhaust port on the allu sleeves? Seems that the chrome in the allu sleeves is more sensitive to the diamond tool than the brass one
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Old 11-27-2003, 06:29 PM   #178
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what is the murnan mod. web site?
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Old 11-27-2003, 06:37 PM   #179
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i believe it is www.murnanmodified.5u.com

try it
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Old 11-27-2003, 06:40 PM   #180
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Hi Grinder
This a better forum to talk about Sirios. By the way my Sirio pipe should arrive this Monday, I'll test it and let you know my impressions.
Two questions:
Head shiming: The Sirio Evo 2 measured cylinder recess from piston at top PMS and got 2.45mm, measured head recess and got 2.00mm, so we have a difference of .45mm.
To use the engine with 20 - 25% nitro, what is the ideal total chamber one should have? I've read that it should be around .55mm, is this correct?, because the engine comes stock with two copper shims, one is .10mm and the other is .15mm, so i could just use the .15mm, am i right?
Glow plugs: What is the equivalent of O'Donnells 77 and 99 on Novarossi??, because that is what is available down here.
AFM
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