Many racers have different opinions, some leave fuel in their engines as the oil content coats the internals arguably protecting from rust. Personally I run the fuel out of my engines, however I use the GMK Supply after life oil and inject it through the fuel nipple on the carb to coat entire engine internals.

Nonetheless, you should disassemble and try to clean off the rust from the crank. Steel wool by hand or dremel with polishing tip works pretty well just stay clear of crank pin. If the crank is silicone filled, do not use any chemicals to clean. Also, at 4-5 gals I'd inspect/change the bearings if the engine still has strong compression. Normally if the crank has rust, the bearing races will likely be corroded too.

To remove sleeve...Install your collet, flywheel, & clutchnut. Then take a med size zip tie (size used for fuel tank pull), bend in half (crimp with pliers to flatten) and push into exhaust port. Grab the flywheel with protective pliers or flywheel wrench & gently rotate. This will push the sleeve up just enough top remove the zip tie and get under the flange to pull upward or gently pry. Obviously you don't want to use anything metal to force the sleeve up from inside the engine.

Hope this helps.

No...the factory shims are fine for 25 or 30%.

Thanks for the reply will try just to see will me mated with a bonito man that motor is sweet

Normally you can run 25% nitro with the stock shims (0,8mm), when the engine are new (a few gallons or so). After that Novarossi suggests 0,7 mm when running 25% nitro.

I just received my two clocked bonitos OMG quality is up there super surprised and excited these mills LOOK AWESOME very impressed. the craftsmanship and quality is HIGH first NOVA motor figured go big on the first time out

Hi,

I don't want to make a new thread just for that one question

Which NOVAROSSI engine would You recomend for a Losi 8ight 2.0.

I know that You've probably answered for that 1000 times but I have to say that the "search" option on this forum is a little inaccurate

I was thinking of the new BONITO.21-7XLBS.

What do You think about that with 9901 pipe and 021 mainfold?

best regards,


Greg

Ummm more like any version of the plus 4 with 9901ss/41021

Hi,

Thank You for Your answer!

Why the plus 4? Is it any better the the Bonito or the Bonito is too powerfull for Buggy?

What version of plus 4 should I choose?

I'm more into petrol 1/5 scale (Baja ) but nitro took my soul too

Greg

Monty I though you liked the 2096 pipe over the 9901

Thanks for the good info! I thought I was taking good care of my motor because I always run fuel out of motor and oil it but I guess I need to clean it out more often. At the Fall Brawl the temps dropped and everything got wet with condensation at night thats probably when I got the moisture in the motor because I didn't run my Ninja that race weekend and it's clean and even has more fuel thru it. I reassembled the motor without removing crank and now after your advice I am considering trying the zip tie trick and cleaning up the internals correctly. Thanks again!

bonito could work for buggy but is just not necessary as it has crazy amounts of torque. if you are looking for a buggy motor, look at the plus 4c team edition, or any of the new btt, btta, btts line (difference in those 3 is just the bearings it comes with). any of those 4 motors paired up with the 9901/021 is a killer combination for buggy

lets just say the bonito is a bit much for the buggy but if you are into stupid amounts of power , then you just might like the bonito in buggy

oh i do , different engines like different pipes Dan

im confused these are two products description from amain hobbies. in the first it says use 41021 for bottom end delivery and then in the second it says the 41021 is for top end performance. I have two bonitos one for buggy one for truggy and my current setup is buggy 41020 and 9901 and truggy 2084 and 41021 thanks guys

This is the Novarossi "Super Strong" EFRA 2084 One Piece Tuned Pipe. This pipe is essentially an EFRA Legal 3-Chamber version of the Novarossi 9853 pipe. This is an excellent pipe for 1/8 truck, as it produces power similar to the 9853, while offering the smooth power delivery, exceptional top end and efficiency of the 9901. The 41005 header is recommended for smooth power delivery, while the 41021 is the header of choice for bottom end power delivery.


This is the Novarossi 41021 short, smooth flow, off-road racing manifold. This is the one piece variety manifold, which attaches to the tuned pipe using three small springs (small springs not included). This manifold is the smooth flow design from Novarossi, and is the short version of manifold for improved top end performance. Included is the manifold, manifold spring and one manifold gasket.

As JQ suggested some moth ago: Put a piece of cloth in top of the piston and press it down to BDC. When you turn the flywheel the liniar comes up.

hi,

Thanks again.

But which of the plus 4 is the best one? With best bearings etc. etc.

I have to buy it from U.S. so it will take a bit time for it to come to Poland.

I wanted to place an order today

best regards,

Greg