That's interesting, if i can make 10 minutes constant, i will have 1 less pitstop.

I run the same clutch (JVD-RC), 2 .9 sprins, 2 1.0 springs and it will be with a Werks 2013/2058, 33% Merlin Fuel

just be aware as stated in the novarossi manual they recommend 25% you can get away with 30% but any more is not needed and would more than likely reduce the life span of your engine. the bonito is awesome and yes powerful, I run a toro modded but keep on going back to the plus4-t only reason being is I can get 13min run times in my truggy. my pit guy has said a number of times that everyone talks in the fueling lane about how long my truggy has been out with out a fuel stop just that alone can win races not so much speed.
cheers

I have run a Plus4 in my truggy and i have thrown it out just as quick, it's too soft for me on bottom, even with a aggresive clutch..(I had borrowed that engine for a race).
I'm quit used to a snappy bottom end, i like that the most. When i get a very smooth engine i tend to push the throttle hard wich ruins my runtimes..

We have 20 min B finals and 30 min A finals, so 10 min. pitstops are enough..

How is a P5 compared to a Bonito ? Or even compared to a Werks B5?

I ran a P5 in my RC8T against a few D8T's with B5's in them. I never felt they had anything for me. It always seemed like i had more grunt, but still had very smooth power and plenty of top end for long straightaways. My brother has one in his buggy and it's flat out STUPID in that

Is that with a stock P5 or a modded one? Because outrunning a stock B5 with another stock engine is quit impressive, never seen that before.. Atleast never noticed i got outrunned..

Thanks for the info man.

quick question I just picked up a second hand plus4 T I stripped it down put in new nova steel bearings change the carb throat oring and backplate using a nova 5 plug I have .8mm shims I went back to factory needle setting and wanted a rough tune I heated engine up to about 80c, I adjusted the needles in the rough position to my identical +4 and found that when giving half throttle and went back to idle the engine still was revving high at the idle setting what causes that?
I did go to a odonnell 97t and richened the low set and problem went away.
just curious
cheers

it seems the idle gap was too big maybee.

i was told lean the low end till it holds a high idle then lower the idle to were you need it then rev it see if it raises the idle then lower as needed if that makes sence

[QUOTE=megasaxon;10589154]I ran a P5 in my RC8T against a few D8T's with B5's in them. I never felt they had anything for me. It always seemed like i had more grunt, but still had very smooth power and plenty of top end for long straightaways. My brother has one in his buggy and it's flat out STUPID in that[

yes after I reduced the idle gap a small bit that seemed to solve it will see how it goes on the track
cheers

Looking at owning a nova for my buggy and hoping for some info. I am looking at the 21-4T tuned, 21-4btta or the 21-4C team. What are the differences between these and also the performance differences?
Thanks in advance.

Not to sure about the 21-4t, the Btta has steel bearings instead of ceramics. the 21-4c has a rear ceramic bearings. They do share alot of the same parts with the Btta having a 2011 year p/s set and the C having a 2010 year p/s set (not sure of the differences) Apparently the 4C has a little stronger low end, while the Btta is a little smoother and slightly more top end, but don't quote me on that. If Monty doesn't post up on this thread, you can ask the question over on his thread, Houston's engine service. He works exclusivly on Novarossi products and knows these motors inside and out.

21-4t has steel bearings with old sleeve and micro-cast piston. The "T" stands for turbo head button.
21-4c team has rear ceramic and front steel bearings with old style sleeve and CNC milled team piston
21-4btta has steel bearings with the updated sleeve( different shaped exhaust port for more top end than the previous sleeve design) , CNC milled team piston, and the new updated super super low cooling head which is friggin sweet.

Thanks for that.

i got 1 ROMA unspoken for , will ship it today and you could be the first in the racing public to have one

Hi! I have a BTTA with a RE10 and a RE11 but I have the chance to buy a 9901 SS with short manifold brand new for $90 should I buy it? Will I notice a difference in power or runtime and the reason I ask is money kind of tight but I will get it if it's worth the investment. I haven't had any real issues with BTTA and RE10 runs great and no DNF or flames in a long time so I am unable to decide to buy 9901 or not. Thanks!