.21 On Road Engine Thread
 

Hi

I am just starting out with 1/8th and want to know what engines guys use. I am wondering why there is so much price difference between the OS and the JP (3 times!!)

Is it really worth it?

Cheers

kinda like ford and ferrari..... :lol:

Novarrossi. Instead
 

If you're really starting on the 1/8, what you really dont need is the ultimate slingshot ready for destruct your car at the concrete wall of the backstraight.

Hence, my best bet goes for a Novarrosi RX221 or similar. RX321PS and others may give you excessive speed that you really don't need (for now....). For the price of a JP, you may get a pair of 221's and have one for practice and other for race (keep the practice as backup of the race).

I have some old but really pretty and quick RX21-R1's (Planning to get a 321 for my MRX-3).

i run the 321p and Max21 MF abc, the only difference is the Max MF will give more punch in the bottomm, the 321p is more smooth in the powerband and i found the top end of both are pretty the same. I think a 321p with a better pipe will be more than enough, the cluth set up is also very important.

I run the OS VZR and find it to be extremly reliable and fast. For club-level racing it has plenty of power. You can find them on ebay for $250, and rebuild parts (piston/sleeve) can be purchased from Tower Hobbies for a little over $100. If you are just getting started, you won't need more power.

Just my .02

What pipe should I run with the 35PLUS21? and what pipe for the OS?

Cheers

.21
 

If you are trying to keep costs reasonable, you can use pipes made by RD Logics or Skyline as they are less than $60 for the one-piece style. One of the magazines had a pipe comparison a month or two ago, and if you can find it.... you will see all the pipes offer comparable performance.

You will find the pipe can get dented racing with others and realize the cost to replace is high regardless of your choice. I have used the Skyline, RD Logics, RB Concept & Novarossi one piece systems. All the pipes work well, so its up you and how much $$$ you want to spend.

35PLUS21...??????

Didn't you listen to this hint?
So, go for the OS.......

Choose between Novarossi 21Plus 3-C and 35Plus21.

Don't, to expensive and to powerfull if you are a beginner....
For the money for those 2 engine you can buy 5 Mega engines.......

Also with a engine with that amount of power you will never learn to drive really fast.

I would go for a 5 ports engine.......

No way for a newbie... too much powerful too much expensive, too much (insert whatever). I still insist on a RX221 or a RX332 as more suited for a newbie (a properly tuned 332 could be quite as fast as other more expensive engines). Not counting that for the price of a 35 Plus 21, you can get almost two RX332 engines.

To much power yes but expensive? How mush is the RX332?

450Eur vs. 660Eur the 221 (who was my first choice, look on my previous posts) goes for 320Eur (check on the-border.com for prices).

With a pair of 221's you can stirr up yourself, drive lots of hours, get accustomed to the reactions of the car, put yourself into problems if you're newbie.

I insist, giving the advice for a total newbie into 1/8 scale to bolt a 332, a 35 Plus 21, JP's or somewhat modified is a total nonsense, he needs a less powerful engine, less critical, less expensive to run, then, time after he may get the opportunity of bolting one of those highly modified engines into their car.

If you wait by the time he need powerful engine. He need to sell his old engine very cheap and then buy expensive engine so at the end he spend more money.

By the time he needs a more powerfull engine, his old engine is worn out, so no need to sell it then anymore... :sneaky:

I got the OS as well!! :)

OS for club and learn how to drive the 1/8th then Nova for national races in case i need more power.

I will get plenty of track time with the OS before I install the Nova

Why not try to buy powerful engine and tune it in the rich side so the engine run very slow and by the time he need power then lean the engine:)

hi Ziggy12345,

It is me Philip, we met at aldershot last year 1/10th national......Welcome abroad to the world of 1/8th....From your driving skill i would suggust a megapicco, they are very good value for money and power ( i used one but never actually own it !!!!).....i have a jp R 01., it is very powerful, but the crankshaft snapped near the top end.....the RB are good engine if you can tune them, i am still running a Rody RB after a year with the same p/s and con rod ( only changed the bearings) ...it is excellent for flowing track,and even guys with jp have problem keeping up at the straight...with good driving skills and setup....POWER is wot u need in 1/8th !!!

C U

Hi Ziggy12345,

Forgot to mention that the faster these car go the more stable they are !!!!!

Easy for many reasons:

1. A fat carburation limits power, but skyrockets the fuel consuption. Great, he doesn't has high output, but a tank could last barely 4 minutes or 4:30 (or... less). I don't know if you have seen that the main problem is facing people now is not critical carburations, or other problems (engines have evolved a lot in those terms), the main problem is the burning rate of the fuel, and the tank remains the same... 125cc.
2. A more powerful car and a newbie overhelmed by the output of those powerful engines could chicken and not open full throttle on the backstraights, so the mixture starts to self lean due to partial throttle, so the car leans and continues accelerating (side effect) alas, the leaner the mixture, the hotter the engine gets, so saw some pretty meltdowns of really expensive engines by 'part-throttle chickening at the backstraights'.
3. A more powerful, because their higher output, their life expectancy is lesser, so doesn't matter if you drove it in 'balls out' mode or 'chicken' mode, he has a life expectancy.
4. Because when that driver wants a more powerful engine, probably the market made some engines cheaper and he will save some bucks on their brand new engine.

Made the test. A friend got a MRX-3 and the shop sold it a JP engine. That engine was a beast and he was unable of driving and pulling the trigger to the max, so engine suffered. One day, exchanged their 'black beast' for one of mine 'old and trusty' RX21 engines and he improved a lot, because the engine had a lower power output and was easier to drive, so he was using more throttle more time. He improved on fuel time and lap time, so more power and fatter carburation at the same time on a newbie is a big NO-NO.

Is the Mega .21 Power Pak worth it? How is the durability?

ziggy, you will like the OS. It is very easy to tune, has excellent power.... and the parts are cheap compared to the RB's, JP's and Novarossi's. Replacement rods are about $33.00, not $70 like the REX, Rossi RB. Piston/Sleeve is $110, not $230. +++.

The money saved will allow you to purchase more tires, which is probably the most expensive part of racing 1/8. Your O.S. motor will last a few years if you take care of it. Tires last a few runs (depending in the surface) and cost $35 to $50 per set.

At some point later, if you are handy with a dremel you can make small mods that will give excellent results.

Well to make the story short we have different kind of teaching method. So far our method works with our new players and now they are cosinder good driver. If you set up the car properly no matter what engine you put it will run the same. I'm a hobbyshop owner here and so far your engine price are really expensive.:(

suntok, why do you mention cost (expense) when you dont even list prices on your site?

When you post in your message that the prices in this thread are "really expensive", what exactly are you commenting on? Do you have an O.S. VZ-R for sale less than $250.00?

I have always thought this, a good setup car is worth more than a fast engine.

Cheers

I only promote Novarossi engine. Sample price Plus 21-3C 420$

Yes I agree but if you have both power and set up it is very easy to win races.

so we don't need any driving skills anymore?

yes we need

Just received the 35 PLUS 21 engine!! Now all I need is a dry day to test it out

Cheers

Wow thats good:)

Good Luck with your new engine. Take care with the boards.

Is a the 35plus21 strong enough to run in a 9.5 pound car? Several racers are saying that the 35plus21 is the motor to get for cars like the MRX-4 or 960, but Im interested in a Rally car like the Ofna GTP or Kyosho GT, heavier cars than the 1/8 4wd open class cars.