Murnan Modified Motors
#2806
Tech Adept
who is the australian importer of theses motors
#2808
#2809
IDM EVO4 Engines in stock now
We have just received the new IDM EVO4 .21 On Road engines. We have the stock, and factory tuned versions.
#2811
just got some lineer shims the ones go under the sleeve used a .1mm motor felt alittle more perky felt like i got some more mid-top out of it. now my ? is when u raise the sleeve i know it changes the timing, but does it also give alittle less compression cause the button head is alittle further away from the piston? also can i take out a .1mm head shim what will that do? thanks
#2812
Tech Master
iTrader: (2)
just got some lineer shims the ones go under the sleeve used a .1mm motor felt alittle more perky felt like i got some more mid-top out of it. now my ? is when u raise the sleeve i know it changes the timing, but does it also give alittle less compression cause the button head is alittle further away from the piston? also can i take out a .1mm head shim what will that do? thanks
#2813
Tech Champion
iTrader: (8)
just got some lineer shims the ones go under the sleeve used a .1mm motor felt alittle more perky felt like i got some more mid-top out of it. now my ? is when u raise the sleeve i know it changes the timing, but does it also give alittle less compression cause the button head is alittle further away from the piston? also can i take out a .1mm head shim what will that do? thanks
#2814
Tech Master
iTrader: (2)
The head clearance does change. As you said you are raising the sleeve plus head button but the piston stays in the same spot, TDC height remains the same. Therefore you will have more room between the top of the piston and the headbutton. This will change the compression ratio.
#2815
Tech Champion
iTrader: (8)
The head clearance does change. As you said you are raising the sleeve plus head button but the piston stays in the same spot, TDC height remains the same. Therefore you will have more room between the top of the piston and the headbutton. This will change the compression ratio.
#2816
Tech Addict
Grinder I race the 1/8 GT class and need a new motor for the Nats in October. I have a RB that you modified in the GT right now that is just awsome but I don't know wish one is it since I bought it used. All I know is that it was an offroad motor. Wish motor do you recommend for this particular class? I talked to you last year about it in a race here in PR but couldn't get in touch with you then.
#2817
I will dyno the engines when I return from the race. I should have some results of the testing by the end of April. I have been doing lots of on track testing, and they are fast. Good on fuel too.
#2818
#2819
Grinder I race the 1/8 GT class and need a new motor for the Nats in October. I have a RB that you modified in the GT right now that is just awsome but I don't know wish one is it since I bought it used. All I know is that it was an offroad motor. Wish motor do you recommend for this particular class? I talked to you last year about it in a race here in PR but couldn't get in touch with you then.
#2820
Tech Addict
I will then try the Kangaroo. I preffer a .21 since they have more than enough power for the rubber tires we use. Plus fuel milage is another consideration. The RB engine that I have from you is an offroad engine and it does really good on power and milage departments. BTW I have won all three races this season and I think one major reason is your motor reliability and power.
Last edited by jneg; 03-30-2011 at 06:25 PM.