Can anyone tell me the number on the crank of the Roma. I have two motors pulled apart and think I have mixed up the cranks.

Numbers I have are both nova's
20/12
25/11

Any idea ppl

Have you tried the exploded view of the engine on the novarossi website?

they list all part numbers for each individual engine part

what is the other engine? i would guess the 20/12 is the Roma crank, assuming the 12 represents 2012 manufacture year

Hi,...
What is a good nova engine for me to start with (it is my 1st buggy)???
Plus 21-4C team???

Depends on how much you want to spend. Some will say the P5 is a truck engine, but it's hard to beat for the price (~$215) stock. Plus 4 has many different versions and will be a little smoother down low, with a bit more top than the P5 stock.

Excellent buggy engine w/41021 header and 9901 tuned pipe.

As the others said, the 21-4 in any version is a great engine for a buggy, very drive-able powerband, especially when paired with a 9901/41021 pipe combo. Price wise tho, the P5XLT is a little easier on the wallet, has a bit more low-end grunt and doesnt rev quite as high, but is killer in a buggy too, just might not be as smooth for a new driver

The P5 HES is pretty damn good too. Seen one walk a stock plus 4 Team on a front straight. But on the other hand, the plus 4 btt motors are very smooth, almost electric like. A tuned plus 4 is the best of both worlds

its an amazing engine. I would highly recommend it. When I started I purchased a taiwanese engine because I was concerned about killing a good engine with limited knowledge. it just gave me hassles the whole time I had it.

I went and purchased a plus21-4 with steel bearings and it lasted me almost 2 years and just over 40L.

Best decision I ever made and it held a tune the whole time.

You can get some great bargains on the plus21-4, around the $200 mark. I would go for this engine hands down.

Plus its got amazing milage and smooth power. You just need to be slow with the breaking. Its painful but worth it in the long run.

Heat cycle and get a full gallon through it before you race it

Takes so loong! With the mileage this engine has the i'm on my third day and only 3/4 gallon, taking my time

I have a 4BTTS and RE12 has a pipe in my buggy. I have trouble focusing was done with a tank over 8 min in the race. what to do with run for 10 + min?

Thanks Martin

yep its a dreaded procedure. Usually takes me 2 days. And it defines boredom....

what I can say is its totally worth it. I have 3 engines in my rotation which have all been broken in correctly and they are all performing perfectly. and unlike other engines which only last 10L you get 4X that from a nova

RE: The vacuum port on the 4btt crankcase. I was wondering if its a must to fill the "hole" like Neil demonstrated in his video? Thanks in advance.

I have a quick question. I have been reading through this thread and am a little confused on the bearing issues. I am considering buying a nova engine. (never have owned one) I am looking at the 21 4c or possibly a btt. Do these front bearing issues still exist on the current production nova engines? Thats pretty much it. Just confused about the bearing issues. Thanks in advance. Tim

The engines that are supposed to come with 17011 should all have that bearing now

Interesting thing i noticed another bearing change on the p5xlt , not a 17011 but not bad , decent seal