I am new to 1\8 and have some qusetions,
I have a 21 PT, how hot do these normaly run?
I got two pipes, the 2015 and 2052 with 5 and 6 fin conical headers, what pipes works best on this engine and what combo normaly works best?

Good day I have a NOVAREX engine from the late 80’s for a RC500. Im looking for a replacement piston and sleeves or can someone help me for a suitable replacement in the current line of Novarossi engine
Any info will be greatly appreciated. Thanks.

NOVAREX 350 3port plus 1
here some spec.
Sleeves Piston
Inside Dia. --------- 16.63mm Outside Dia. ----- 16.63mm
Outside Dia. ------ 19.92mm Height ------------16.65mm
Head Outer Dia. --- 22.20mm
Height--------------- 13.06mm
Bottom to base of exhaust port ----10.05mm

Do not know, I am confused with your numbers.. The older Novarossi sleeves have a 19.2mm diameter and the later models 19.5mm. The RB WS7/S7C is such a square stroke P/S set (19.5mm) you can make to fit. And I think you do need a E-type rod (4.9mm)
But the price to fix this one is almost a new one. Get a Kangaroo or a Basic N21-5T or N21-7T and you will get a same performing engine.

Very much appreciated. I don't plan to run it but it feels a lot better if the car and the engine run together. Thank's a lot

Hi all,
I am new to the nitro on road scene. I have been racing offroad (nitro and electric) for a while now and recently got into on road electric but am leaning more towards going nitro. I am looking for an reasonably priced Nova that will let me be competetive. What do you guys recommend? Thank you!

You going to be racing in the FORGASS? Assuming you're going to be racing 1/10 sedan? The Nova Flash PT is very good. Most places have it for around $369 USD or so. I'm currently running a Flash PT and a Murnan Keep-On, and they're both really good motors.

Thanks for the help. If everything pans out my goal is to race in the FORGASS. I'm looking to race 1/10 sedan.

boca bearing
 

Ceramic Boca Bearing.

Is this bearing will do the job ? Somebody has ever use this bearing ?

I'm concern with the plastic retainers ( the ball cage ) might deform after 140Celcius.

Buttonhead (35+21 and PT)
 

Can the buttonhead of the PT (Part # 28022/1) be used on a 35+21 (part # 28011)?

Yes.

Be aware that the fresh fuel in the crankshaft and bearings is giving a lot of cooling. No problems, the temperature will not even come close to that.

Hi,

Sydwc kangaroo done four litres and has a notchy bearing that make its soun like a deisel! The engines lost power and dies after long bursts of power. Is it worth replacing the bearing or should I just dump it?

Hi,
Will the .21 FlashPT header silicon gasket (red), fit a the earlier novarossi .21 engines in place of the blue colored silicon gaskets?

Tried searching this forum, couldn't find info on this.
I read the the PT/PTS gaskets are a slightly different design, but was hoping they will still fit the likes of a 35plus.

Thankyou,
Brad

Help! Looking for a backup 21 onroad motor
 

So I originally had my eyes set on the Nova 35 plus 21, but the JP Eagle 21 R-9s also caught my eye. For those experts out there, which would I be better off with? Any personal experiences between the two? This will go on my MRX4X. Your help is greatly appreciated in making a sound decision. Thanks for looking.

Anyone?