Hey guys
Ive got a couple Nova virtus .21 for the truck and plus.21-4bttwc/a for the buggy all being factory tuned. Anyone have any pointers or obvious blunders that i should know? Ive had REDS for years and managed to get quite a knowledge about them. I know with the newer carbs, its kind of like tuning an os, but in reverse.

Any input would be awesome, and of course greatly appreciated!

Thanks again guys
Zach

Hey guys
Ive got a couple Nova virtus .21 for the truck and plus.21-4bttwc/a for the buggy all being factory tuned. Anyone have any pointers or obvious blunders that i should know? Ive had REDS for years and managed to get quite a knowledge about them. I know with the newer carbs, its kind of like tuning an os, but in reverse.

Any input would be awesome, and of course greatly appreciated!

Thanks again guys
Zach

another pipe question, what is the performance difference between the nova 9886 and 9853 also nova 41021 and 41019.. top end ? low end ?fuel mileage? to be used on nova 21 5port 7mm carb restrictor thanks

this is crazy:

http://www.amazon.de/Novarossi-72301...ords=Novarossi

i already informed the german distri about that.

sold and shipped by amazon.de (germany) for a lot under "general street prices".

Considering a P5 xlt for Nitro Buggy, Can some one tell me what pipe and plug going to run 30%

either a Go 2072 (hard to get) a 9886 a werks 2058 on the P5

nova 2096/41001 is a very good combo for p5. 41001 for bottom end, 2096 for speed in the straight. Works a charm.

Thanks for the info guys, What plug? What kind of run times am I looking @?

Er8sr, in buggy I like the 9901/41021 combination. This setup has good bottom end but a little short on the straight. The 2096 is butter smooth, almost to smooth at times but gives the motor more top. I used a 41021 manifold with both combos. You should be able to get 10 minutes per tank in buggy pretty easy. That is with either pipe. As for plugs I like Odonnell 97t's. Good luck.

Pipes
 

For smaller tracks or tough to clear jumps I like the 9853ss 41001
For everything else 9886 41001 or werks 2058 with stock header.

Thanks great info..

And a Mugen MSR 1005 if you can find one.

Listed price is $20 cheaper than the price at AMain. $20 is not a lot.

Distributor give a retail price but hoppy shop can sell cheaper, hobby shop always have competition so up to buyer to decide

the day i made this post above, this engine was at 250€ !

i made a screenshot, a friend of me got it for that price.
30 min. after he bought it, they increased the price to 473!

and now its sold and mailed by a shop not amazon anymore...

Guys thanks for the info the P5xlt is a nice motor... Really Like it..

Need pipe suggestions for a P5XLT, Modded, Losi 8T 3.0 with semi aggressive clutch set up.

This is what is important to me ( in this order)

1. Run times. I want to make 10 minute pit stops without "
2. Smoothness. I want to be able to control the truck and not have it all over the place. Don't like the Electric On/Off feel.
3. More concerned in low to mid range. I know its a contradiction to have an efficient pipe that is a torque monster, but there are some out there ( that's why this is #3).

I am not brand loyal, and don't care if they "match" so frankenstiens ( pipe, header and motor all from diff manufacturers) are also of consideration. Just want it to work for me.

I have some pipes already, Werks 2013, 2057, Dyno 053, JP-1 and -3 and probably more somewhere in the garage....

2096/41021 done

+1

Rex engine question. ..

The Paloma compares to what nova engine?

The Rex r+5 compares to a p5 I assume, if so what version?

I broke in a Paloma limited edition for a buddy. 7 ports, timed more for top end, I would say closest to a Fusion X7. Great buggy engine.

Rex

Paloma used toro nero team spec p/s with silicone filled, if u got extra budget, change the bearing to ceramic bearing pair with 41021 + 9901.it will rip

Not a lot of talk on the REX line of engines.

Any feed back from the guys in the States running them?

Really interested in the Paloma and the R Plus 8.


Cheers.

They have 14.5mm rather than regular 14mm crankshafts so they should run like the regular novas but better ;) ..well, I'm just assuming, because usually bigger crank diameter means better performance.

R Plus 8 is probably based on the previous 421B, which is now being sold as Ultimate engines M-814 in Europe. (updated case, head)
I've seen a few of those Ultimate versions at races I go to and they perform well.

Plus 5 is obviously P5XLT with a saucier crank.

Paloma should again be like a Bonito with the old style head.

The orange head Rex Paloma limited edition is not the super long stroke like a Bonito. It is the same stroke as a P5, not sure on the other Paloma.

Rex

I have been testing them for a while now. They all run very good. Idle very steady, good mileage, and smooth power.

The R plus 8 is the smoothest. It would be suitable for buggy. It has very smooth acceleration.

The Paloma is the most powerful, it would be good for buggy, or truggy depending on setup.

The R plus 5 is a great all around engine. Good for buggy, or truggy depending on setup.

During testing, the stock engines are all capable of running 10+ minutes. My modified versions are also able to go over 10 minutes, but with more useable power. This is with both amateur, and pro drivers during testing. Loose, and high bite tracks.

These 3 engines all use the same shaped 14.5mm balanced crankshaft. Different stroke crankpin though on the Paloma.

The Paloma uses a Bonito piston/liner.

The 8 port uses an 8 intake port liner, with a flat top P5 style piston.

The 5 port uses a bonito type dome piston with a unique 5 port liner, that is different than a P5.

Overall, I'm happy with the Rex engines. They run very good.

Hey guys
Whats a good milestone fuel mileage where i can start leaning on the top and bottom end? Ive got a btt-wc and bonito, both factory tuned, and had about 1 tanks through each. 50% of that has been on a track, with an extremely rich tune on it. Temps hover around 100c normally.

Thaks for any input guys :)

Awesome.

Thanks for the feedback on the REX line up.

Exactly what I was after.

Cheers.

If you only got 1 tank thru each motor I would suggest another 4-5 before you start messing with the needles at least. Just my opinion.

You want to get about 1/3 to 1/2 gallon ( 1-2 qts for you metric guys) before you start leaning on it. I would do a fast idle for 2 or 3 tanks then drive easy with 2-3 second bursts with about 8-10 seconds in between, for the next 2-3. Then lean an hour or 2 and continue with the bursts. Always keeping an eye on the smoke trails and temps. 100-115C is a good place to be but not much higher than 120C.

Getting ready to start my break-in this weekend but the temps here are going to be dropping into the 40-50's. It will be hard to keep the heat in. Got my heater and tin foil ready....

Slightly rich break in will be good, just dont rev like racing. Ensure after 5th tank do some short burst s mention above

Is the paloma limited unit? There is a new order coming in so i probably buy 1 as the price is crazy include with pipe n manifold.

Does the keep off .21-4 use a different size rear bearing than the keep off ..21-xl?

yeah the 21-4 has a 14mm crankshaft and 21-7 has a 14.5mm crankshaft.
Also Novarossi have started messign with the bearing sizes again just so people can't buy 3rd party bearings on the cheap.. "patented".. ugggh...

Thank you. So does the the 21-4 use a 25.8 bearing? I was confused because when I searched 'keep off bearing' under amain a tko 14x28 comes up for 21-4

Yeah we need to separate our apples from our pears here, 21-4BTT uses a 25.8 but I think the Keep Off uses a 26mm bearing where Nova has it patented and it seems to be impossible to buy it anywhere unless you buy the Nova bearing which costs like one million dollars a piece.
As far as I know the only difference between the BTT and the Keep Off 4-ports is the bearing size and therefore slight difference in crank case. Other than that all the parts numbers appear to be the same.

I'm referring to only keep off 21-4. This link from absolute has a 25.8 for the keep off 21-4 i believe. At least that's whats written on the bearing in pic. Just confused why amain has a 14x28 listed for keep off 21-4.
http://www.absolutehobbyz.com/produc...ducts_id=16906

The keep off uses the same size bearing, in terms of diameter, its the internet race that's different in terms of width. The internal race is 4mm

that has to be a typo

What does?

http://www.amain.com/TKO-14x28x6mm-C...F-21-4/p384904

14x28 bearing size as written here