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-   -   Murnan Modified Motors (https://www.rctech.net/forum/onroad-nitro-engine-zone/16008-murnan-modified-motors.html)

Grinder 04-07-2003 07:30 PM

Murnan Modified Motors
If anyone is interested in my modified 3 port engines that conforms to ROAR and EFRA rules you can email me at [email protected] for details. My motors are extremely fast and reliable.

cybertoolzz 04-07-2003 08:46 PM

didn't i c a murnan mod for sale on ebay recently? y not post some infos here...

Grinder 04-07-2003 09:09 PM


kevink2 04-07-2003 09:12 PM

MT-12 is sweet, thanks Uriah. Got some of my best lap times ever last weekend. :D :tire:

Grinder 04-07-2003 09:20 PM

Murnan MR-12 Crank

cybertoolzz 04-07-2003 09:43 PM

excellent work - i'm impressed. can u show the BEFORE pics?

u widened and polished the carb opening? u didn't open the carb inlet right - that's still 5.5mm - correct?
i'm no expert but what does a wider throat do other than allow more AIR?
and even if u open the throat by 1-2mm that is only a VERY SLIGHT increase in the air volumn entering the cab. i fail to see any SIGNIFICANT improvement here... (but again i'm not very l33t)

now the crank - again excellent stuff - very sharp and polished work- u shaped the scoop up into the bore and it looks like u beveled the scoop back INTO the bore opening slightly.
how far can u push this technique - can u take it back FURTHER into the bore opening?
what about the INLET PORT of the crank? did u do any work back there? widen the port - flare the sides, etc? can u post a pic?

what about sleeve work - that seems to be where most ppl get creative....

(i wanna be l33t 2!)

theRED5 04-08-2003 01:02 AM

These things are great! I have a Murnan modded NovaMega MT12 and it has more power all the way through the rev range, and increased top end. I didn't know how much better it was till I got a really good exhaust system (NTC3), now that I have, this baby will scream...I've been running it hard since Feb. and its still gets stronger as it gets more wear.

Drive one or chase one, Uriah's got the HEAT!:nod: :D :lol:

stefan 04-08-2003 04:53 AM

My Murnan RB X12 should be in my mailbox today:blush:

This man knows what he's doing, I felt it on the back straight of our track:cool:

Supernitro17 04-08-2003 05:44 AM

does anyone mind sharing a price ? im looking for a new fast engine... how is the durability , i know they damm sure look cool .

cybertoolzz 04-08-2003 07:29 AM

grinder/murnan - chk out the discussion on the RB X12 Rody - how much would it cost to modify a STS RS5 like the mods used on the RB Rody? would it be worth it?

Grinder 04-08-2003 07:58 AM


bgotori 04-08-2003 09:47 AM

Hey Grinder

Do you do MT 12 Turbo's. I'm looking for an all out 12 Turbo to run in my GT4R. I'm going to be running against 835's(Serpent) with all out 15's.

If you do what's the price for Modding with motor. I'm looking at Carlsen's, but there harder to get here.


Bradley J. Gotori
[email protected]

ice-wolf 04-08-2003 10:30 AM

Grinder you got pm.

stefan 04-09-2003 05:08 PM

I got my Murnan Modified RB X12 today.

WOW! What a piece of work.

Thanks Uriah!!!

Grinder 04-09-2003 05:56 PM

Thanks Stefan. I now have a limited number of modified 5 port MT12's available with standard buttons.

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