R/C Tech Forums - Novarossi engines thread

Help..I Have a JP engine that is being tempermental. the bottom end will run intermitantly rich during a qual or a main, so we then have to lean the top end down to get it to run good and the temps are way high. i just agrrevating:flaming: ill have it running real good pull in take a piss and then go back out and itll run fat on the bottom end

Make sure, that the orings are ok. If you can ALWAYS change ALL the ORING after tearing apart the engine.

Hope it helps

speedy2

08-08-2008 09:29 AM

I had have a jp B5t that was hard to set up like that
after 1 gallon or so, I mounted a non turbo head
and magic....
the engine was tuned immediately and
idled regularly too till now at 3 gallons

so perhaps it is not the carburator or o-rings
but a different turbo plug you need ..?

dameetz

08-15-2008 09:22 PM

I have Plus21-3 7ports on road engine that I like to rebuild. I have changed the bearings and would like to change the piston liner and conrod as well. I just want to know if 35plus21 9ports or 359 9 ports piston liner and conrod can fit to my crankcase? If it fits will it make more power?

Thanks

wingracer

08-16-2008 04:53 AM

The 359 rod will not fit your crank.

35 +21 is almost the same motor. All parts should fit.

PROVK

08-17-2008 05:22 AM

Hi Guys

I have done this a million times but first time with a Nova 21.
I am trying to install a mrx-4x clutch to a 35plus21 LC and seems like the clutch screw it too short and I cant get no end play with zero shims

Any help would be apprecaited

Wynnum_Racer

08-17-2008 06:06 AM

What pipe would be recomended to be used on a 359 plus 2? On a more Bottom to mid range sorta track

I have a 2052 and a 2015. But only used on the 35plus found the 2052 was better but was told that 2015 made more power on dyno :confused:

PROVK

08-17-2008 06:19 AM

Quote:

Originally Posted by Wynnum_Racer (Post 4747199)

I think is pretty simple dude.
You have both pipe right, then take them both to the track and test

Wynnum_Racer

08-17-2008 06:28 AM

Yeah i know i will with those 2. But they do make more then just those 2 pipes. Has anyone tried the others and had luck with them.

PROVK

08-17-2008 06:32 AM

Wynum Racer

Read 2 posts up, did u have any probs with clutch install on 359

Wynnum_Racer

08-17-2008 07:01 AM

Nope no issue. None with my 35plus either maybe wrong fly wheel nut

Bad Mika

08-17-2008 08:43 AM

...

:confused:

Quote:

Originally Posted by PROVK (Post 4747147)

hi, i had the same problem of not enough endplay with zero shims on my mtx4r clutch with my nova 353... had to put and add a small shim at the end of the crankshaft between the lock screw.

did not like it, but not much choice...:cry:. others i asked did not need to do this :confused:. don't know why like that... couldn't possibly be they have different length crank shaft ?? :confused:

GBagRacing

08-17-2008 10:52 AM

Quote:

Originally Posted by Bad Mika (Post 4747474)

:confused:

hi, i had the same problem of not enough endplay with zero shims on my mtx4r clutch with my nova 353... had to put and add a small shim at the end of the crankshaft between the lock screw.

did not like it, but not much choice...:cry:. others i asked did not need to do this :confused:. don't know why like that... couldn't possibly be they have different length crank shaft ?? :confused:

The difference is most likely in the flywheel collet. Some are thicker than others. A thick collet against a flywheel that needs a thin one would move the whole assembly 1-or 2 mm futher down the shaft, thus eating up the play that you would normally have.

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