mugen vertex 15

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.

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

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.

10X

hi grinder how can the sleeve be squeezed without ovaling the liner??? wouldnt this weaken the liner itself???

jeremy

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?

If taken care off you should get about the same life expectancy.

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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?

Yes, it will fit.

Grinder: Thanks, btw did you see my pm to you?

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

GRINDER HOW MUCH FOR A MOD MRS1.

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.