You will need to retune the engine,

thats it, I have changed fuels plently of times, I dont even idle the engine, I just retune and run it hard like I did with the old fuel.

Go with Byrons 30% or Mugen Seiki. (same as byrons)

That engine will wake up with Byrons, Byrons is the best fuel imo.

You might feel a slight difference in performance going from 35 to 30%. Maybe you need to retune your engine a little bit. Lesser nitro will make your engine running cooler and slightly longer life.

quick question : what is the best .12 novarossi engine overall?

N12LL5 M.Speed www.dogboneind.com

The LL is not the best engine on all tracks.

It's good on small to medium tracks, the engine is mostly torque.

L5 yes but the LL5 we tried has a lot of rpm.

still havent get the answer yet..

LS12.....

the new engines are the best that novarossi offers, extremely consistent and a little bit faster than the previous NS series....

hey guys, i'm thinking to get a new engine. Currently I have an OS 12 TZ p 3port and it's dying! I am thinking to get a NSR5 what do you guys think? will this be a big improvement over my OS? I use 25% btw.

definitely yes.. nsr5 port has more horse power compared to os tz3. this is base on technical data

how's the reliability?
i have the TZ P 3port turbo

I am currently using a TZ 3 port. I want to "upgrade" to a N12LL3. Can anyone with this engine share some of his/her experience? How easy is it to tune this engine? speed/power? Thx.

[QUOTE=Sandra]Whats up maryland crew, its craig from the vorra club

there was alot of discussion about break in here recently. early in the year we started using break in stands (because we started carrying them)after of years of figuring it could not make any difference.(for years I could not justify the cost of serpents model) boy was I wrong. every engine we have used the break in stand on has been nothing of a rediculous missle and outlasts all our previous race motors by a large margin. The biggest thing we noticed was when it comes off the stand it is super smooth and free feeling. it also keeps the rod from getting beat to death while the piston and sleeve are getting broke in. I also started using a tired mule engine to break in the piston and sleeve and then installing it into the race motor giving 2 more tanks of break in. no sence wearing out the crank and rod breaking in the piston and sleeve. (life improved on the 12's from 6 to 10 gallons for us, I think our record is about 12)
If you haven't tried a stand its definatly worth it. we buzz a quart to a half gallon through them on the stand before they go in the cars.

Which brand break in bench is it the one that you are talking about?