13LikesMurnan Modified Motors
01-28-2007, 05:41 AM
#1096
Originally Posted by WorldCup2004
what is the difference on the dyno vs the CRF original ?
The engine certainly feels stronger, and smoother.
01-28-2007, 05:53 AM
#1097
Originally Posted by Nitrogasm
hello ,
sorry for the novice question , i recently got a murnan +3-ct and skyline pipe .
i have 12 tanks of fuel through it and it is really breaking in nice and making tons of power .
but,
im having trouble getting the idle down .
i started with the standard 1mm slide setting but it is idling really high no matter what i do . if i close the slide down much below .5 mm opening to bring the idle down when i hit the gas there is a big stumble no matter how lean or rich the low speed jet is set .
when tuned to have good snap from idle into the main fuel circuit , it then idles too high .
could the main still be to rich ? the engine is running right about 240 degrees and still blowing good amount of smoke
can anyone offer some insight to where my tuning is wrong
btw i am running o'donnell 20% fuel if that matters
thanks a million
alan
sorry for the novice question , i recently got a murnan +3-ct and skyline pipe .
i have 12 tanks of fuel through it and it is really breaking in nice and making tons of power .
but,
im having trouble getting the idle down .
i started with the standard 1mm slide setting but it is idling really high no matter what i do . if i close the slide down much below .5 mm opening to bring the idle down when i hit the gas there is a big stumble no matter how lean or rich the low speed jet is set .
when tuned to have good snap from idle into the main fuel circuit , it then idles too high .
could the main still be to rich ? the engine is running right about 240 degrees and still blowing good amount of smoke
can anyone offer some insight to where my tuning is wrong
btw i am running o'donnell 20% fuel if that matters
thanks a million
alan
Hi. Just to make sure your needle settings are close. My low speed needle us between 2.5-3 turns out from bottom. My High Speed needle should be out 4.5 to 5.5 turns out. I am using Rocket Scienct fuel which you need to lean a little more than Odonnell. Myabe on the top you should be more out than me. Depends a lot on the fuel you use. Also you may want to add one .1mm head shim to the engine. Also after break in is complete. (Probably now)Change the glowplug from the #5 that is in it to a # 6 or 7. You will need to play with the low end needle and the idle set screw together to find the perfect idle to full throttle. Also clutch can effect this. If your clutch is hanging up, it causes the engine keep revving like you describe. Make sure your clutch disc is not touching the bell unless you hit the gas. I like my clutch engagement somewhere around 15,000k RPM. Hope this helps. Please ask if you have any more questions.
02-01-2007, 01:35 PM
#1098
Good luck to Murnan Team at the Winter Nats.
02-02-2007, 03:59 AM
#1100
Dear Ulriah, what is the average runtime of your Murnan Mod Sirio Evo3 STI? (say on a track with 16.3sec per laptime)...
02-02-2007, 04:07 AM
#1101
Originally Posted by B4
Grinder,
I placed an order with you two days ago, can you tell me when it will ship to OZ.
I placed an order with you two days ago, can you tell me when it will ship to OZ.
02-02-2007, 04:08 AM
#1102
Originally Posted by AlanLim
Good luck to Murnan Team at the Winter Nats.
02-02-2007, 04:15 AM
#1103
Originally Posted by doc56
Dear Ulriah, what is the average runtime of your Murnan Mod Sirio Evo3 STI? (say on a track with 16.3sec per laptime)...
02-02-2007, 04:24 AM
#1104
Originally Posted by Grinder
Hi. It is impossible to guess at the runtime. Even with lap times. If someone is doing 16.3 sec laps, and someone is doing 16.3 with another car with the same engine. Runtimes can be different. There are a lot of variables involved. How much wheelspin you have for instance. Someone can drive the same lap time as me with smoother throttle..they get better mileage. Myself who likes to burn the tires off of the car.. I will turn the same lap time, but run out of fuel early. Just because of my throttle finger. Many other factors are involved too. Air quality, clutch setting, gearing, tire diameter.... The list goes on. The mod Sirio should make runtime when tuned properly. Somewhere around 5:30.
We have an open and fast track and to solve the problem we go to 8 min qualies. The refuel times are really important. No engine can do 8 min at race speed but all can do just over 4.
Cheers
02-02-2007, 05:21 AM
#1105
Thanks Luck!
Check this out! 
02-02-2007, 06:10 AM
#1106
He does a great job! I had 6 shells done in the same design with 3 colours, 2 shells for each of the 3 team members. I love his work
02-02-2007, 06:51 AM
#1107
Tech Initiate
Hi Uriah this is Özant from Turkey how are you, ı hope everything is ok.You know ı bought evo3 Sti and nearly my break in completed and my car goes really fast but ı wonder if ı would buy Murnanmodified Evo3 Sti how is the difference? Is that worth to buy murnan 
For example what is top speed stock sti and murnan sti do you know that?
Sincerely
Özant Emil
For example what is top speed stock sti and murnan sti do you know that?Sincerely
Özant Emil
02-02-2007, 07:08 AM
#1108
Originally Posted by Grinder
Check this out!
02-02-2007, 08:50 AM
#1109
Originally Posted by Grinder
Check this out!
!!!!!!!!!WOW!!!!!!!!!!!!!
Very nice uriah...cya at the Nats... bring the ponies
02-02-2007, 10:02 AM
#1110
If you want to tune that motor.....check out this new software. You can get laptimes right to your computer, at the track or at home. Can create your own set-up sheets, do graphs, etc. Good way to tune your car at practice! You can even hear your laptimes on the drivers stand with a Bluetooth or wireless headset!
LapWatcher
You can download the evaluation version (client)
LapWatcher
You can download the evaluation version (client)