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Murnan Modified Motors

Old 07-06-2009, 08:14 AM
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Originally Posted by Grinder
The stock 35+21 has more top end, and less bottom end than the Cordoba engine. Modified they perform the same.

The Flash has more midrange, and more peak HP than the 35+21, and Cordoba. The Flash has slightly less torque than the 35+21, but more peak HP.

The best bang for the $ is the Picco P9R, and the 35+21. The Picco is cheaper, but it will not last like the Novarossi. The Novarossi is also easier to tune when near the performance limit.
Thanks Uriah for your honesty, I placed a new engine order last
thursday.

Thanks again.

Dale
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Old 07-07-2009, 12:40 AM
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Originally Posted by grub
thank you uriah on another profisional and fast service
very impressed with the look at the new rb now time to break it in
Hey Grub which way is the cooling head on yours??? Just got mine and its got the concave out towards the exhaust??? All the T9's are the other way round , thought the concave was to allow for a INS Box
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Old 07-07-2009, 12:55 AM
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Originally Posted by Green Machine
Hey Grub which way is the cooling head on yours??? Just got mine and its got the concave out towards the exhaust??? All the T9's are the other way round , thought the concave was to allow for a INS Box
gidday mate
the 2 i have here have the concave to the exhaust as well
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Old 07-07-2009, 04:00 AM
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Originally Posted by grub
gidday mate
the 2 i have here have the concave to the exhaust as well
Either way is fine. You will need to switch 180 degrees for ins box. The way I am required to run them in here requires me to switch the cooling head 180 degrees.
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Old 07-07-2009, 04:07 AM
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Originally Posted by Grinder
Either way is fine. You will need to switch 180 degrees for ins box. The way I am required to run them in here requires me to switch the cooling head 180 degrees.
cheers for clearing that up uriah
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Old 07-08-2009, 05:12 AM
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Hey grinder i plan on ordering a .12 Wasp from you guys in like the next week with the break in service and was wondering when you guys send me the engine already broken in what do i have to do before it reaches its full potential?
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Old 07-08-2009, 10:29 PM
  #2287  
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you have a pm, ty
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Old 07-14-2009, 08:01 AM
  #2288  
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Default Region 1 july11-12 in Cahaplin, CT

I would like to thank Murnan Mods for providing the awsome power plant for the Region 1 race. Murnan's RBR3 powered my sedan to a 5th place qualification in the A-main and a 2nd palce finish after a long 45 minute A-main. Very consistant and smooth powerband with a temp of 245 degrees at the end of the race. Not once did I have any motor issues during the race.
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Old 07-14-2009, 11:46 AM
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Grinder,
Hey, after rumaging through some older stuff, I found an original P5 p/s. I was wondering if these could be used and/or modified to fit any current Novarossi platforms. I do have a JP Ro3 that I was hoping it might fit. Anyways, any help would be appreciated.
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Old 07-14-2009, 03:43 PM
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Default ConRod Question

Grinder,
I have a NR RX21 Kangaroo and a Murnan Modified NR 35+21. Both take the R7 conrod according to the NR spec sheets. My question is, are there any modifications to the MM NR 35+21 R7 conrod or are they still interchangeable?
Thanks in advance for your feedback,
Roger
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Old 07-20-2009, 05:00 AM
  #2291  
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Default Murnan Nova Rossi S21WCS09 motor

I received my new S21 from Uriah last week. I carefully broke it in on friday.
went to the track on Sunday ( the newly resurfaced Gulf Coast Raceway, WOW!!!).

This engine is amazing! Gobs of bottom end! even more bottom than my Murnan Flash 21. Does'nt have the top end the Flash does, but at this track
bottom and mid-range are more important. Good motor for $500.00!

Dale
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Old 08-02-2009, 09:33 AM
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Default 2009 GReat Lakes Challende

Congrats Uriah & the Murnan Team the MM RB is the big talk out there really fast
Congrat's on making the show Qualifying 6th Good Luck @ the mains
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Old 08-02-2009, 07:37 PM
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Just wanted to thank Uriah for the crazy HP this weekend at the GLC. This was my first race with the Murnan RB and it worked great all weekend. No problems with runtime on the Toledo track which always needs good mileage. Unfortunately the main didnt go as well as qualifying but we learned a lot this weekend and are looking forward to the nats at the end of the month.
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Old 08-02-2009, 07:46 PM
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Originally Posted by Bobby Flack
Just wanted to thank Uriah for the crazy HP this weekend at the GLC. This was my first race with the Murnan RB and it worked great all weekend. No problems with runtime on the Toledo track which always needs good mileage. Unfortunately the main didnt go as well as qualifying but we learned a lot this weekend and are looking forward to the nats at the end of the month.
Bobby I heard you were flying @ Toledo See ya @ the Nats
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Old 08-03-2009, 03:36 PM
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Default GLC

I would like to thank Murnan Mods for providing the awsome power plant for the GLC. Very powerful and smooth powerband with a temp of 270 degrees at the end of the race. Not once did I have any motor issues during the race.
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