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Murnan Modified Motors

Old 04-29-2003, 08:55 AM
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mugen vertex 15
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Old 04-29-2003, 11:08 AM
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I am still waiting on the S3's, hopefully soon. Cybertools, yes I can modify that motor. When I say resize the sleeve that means I can have the sleeve squeezed to restore the compression.
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Old 04-29-2003, 11:49 AM
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I think that this Question was asked before but I didn't think there was an answer. Can you please answer if widening the carb opening will improve the engines performance in some way
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Old 04-29-2003, 03:10 PM
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Yes, the carberetor has been opened up to improve the amount of fuel/air going into the engine, it mainly helps the engine achieve higher top end speed.
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Old 04-29-2003, 04:02 PM
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10X
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Old 05-06-2003, 04:14 AM
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Originally posted by Grinder
I am still waiting on the S3's, hopefully soon. Cybertools, yes I can modify that motor. When I say resize the sleeve that means I can have the sleeve squeezed to restore the compression.
hi grinder how can the sleeve be squeezed without ovaling the liner??? wouldnt this weaken the liner itself???

jeremy
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Old 05-06-2003, 08:29 AM
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Default Ran me Novamega/ Murnan Modified sx12...

All I can say is ballistic.And I don't mean just in the straight.This thing hauls all over the track and screams @ 230 degrees.I am more then pleased.My rb x12 was fast but this thing is hands down faster everywhere.Thanks Grinder! Now to see how long before I blow it up. Whats the life expectancy for a motor that been modified compared to a stock if its taken good care of?
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Old 05-06-2003, 10:14 AM
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If taken care off you should get about the same life expectancy.
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Old 05-06-2003, 04:37 PM
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.

Last edited by Grinder; 02-05-2008 at 04:48 AM.
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Old 05-06-2003, 08:29 PM
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Sorry, I know this is the wrong thread, but I am wondering will a RB 5 port P&S fits into a Nova RS12s1?
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Old 05-07-2003, 06:48 AM
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Yes, it will fit.
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Old 05-07-2003, 09:19 AM
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Grinder: Thanks, btw did you see my pm to you?
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Old 05-07-2003, 10:10 AM
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hi Grinder . Im the one who sent u the engine with a bad crankshaft. And I got ur email. Until now I still can't decide coz theres this guy selling me his mt12 crank for $25 + shipping and waiting for its pic. If the crank is still ok I'll let u know. thnx
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Old 05-07-2003, 11:09 PM
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GRINDER HOW MUCH FOR A MOD MRS1.
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Old 05-19-2003, 08:17 AM
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I finally had a chance to break in my Murnan modified RB X12 last weekend.

WOW, that thing is haulin' some serious a$$.

Temperature was stable at 235-240 and I was able to run for 6 minutes easily.

Great engine, I love it.

Thank Uriah.
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