losi lst motor swap
 

does anyone have any ideas what other motors will fit in the lst that have more power?

when i get mine i want to swap out the motor before I run it.

RE: losi lst motor swap
 

Anything with a .21 size mounting block. So you could safely put an RB .28, or a TOP .28, or any of the .26's, 24.7 pro, etc.

Matt

RE: losi lst motor swap
 

Doesnt need it, if you dont think 2.75 hp is enough than i cant help ya bud.

RE: losi lst motor swap
 

i thought there might be a better motor for it than the stocker, and i could swap it out and sell the mach never run.

what is the best motor in that size for all around use?

RE: losi lst motor swap
 

I just replaced the s25 in my savage with the mach 26 and it screams. Why in the world would you want to replace it?

RE: losi lst motor swap
 

I would definitely swap my Dynamite engine out for even that OFNA Hyper 8 port engine! Better yet, the Wasp .26, or the Picco .27, or even the Fantom .27 engine!

RE: losi lst motor swap
 

so which one is the best?

RE: losi lst motor swap
 

None there is no best IMO. They are all very close and setup is more important then engine when comparing the above mentioned. I have experience with all three above the fantom being so new still getting time on that one. But the picco .26 and 8p are on the same level.

RE: losi lst motor swap
 

Even though I don't have one, I feel safe in saying the RB TM-28 engine is gonna be the best big-block MT engine you can get....PERIOD.

http://www.unlimitedengineering.com/...00-000105.html

RB is KING of high-end motors, on and off-road (buggies). This is their first MT-specific engine, and although RB doesn't release HP figures, it's definitely near or at the top. The Sirio .27s (reg. & 'Pro" models) are probably close behind, but at $350, the RB is strangely LESS costly, I believe, than the Sirios, even though their modified racing engines often get to the $600+ range!

BTW, what is the TOP 28 ThermalD refers to? I've never heard of it.

Dean

RE: losi lst motor swap
 

Im referring to the upcoming Novarossi TOP .28 engine. Very high end company. It will have the black head, instead of the Orange RB head.

http://www.fusionmotorsports.com/Fus...-Sports-ad.gif

RE: losi lst motor swap
 

You sure about that? The RB that is. From what I'm reading it's not even the race version. I think time will tell. Don't get me wrong I love RB's but I have beaten them with less expensive motors time and time again. It really is all about setup and gearing. The engine thermal is refering to looks like the ticket. Can we get a price and some specs? Thats should be the race version. Correct me if Im wrong thermal but Novarossi and Rb are pretty much the same right. And if so the standard .28 say's 3 ports but the RB say's 5 one transfer. What's the deal?

RE: losi lst motor swap
 

Im not sure on the price. I'll do some searching around, and see what i can come up with. As far as im concerned, nothing beats the quality found in the OS, RB, and Novarossi motors. Yes, the RB, and Novarossi motors are pretty much the same. As far as the porting, i really cant say. Im sure that the TOP and the RB are both excellent motors. You just have to ask yourself if its worth the 350 dollars. I wont decide on another motor until i see the new OS engine.

Matt

RE: losi lst motor swap
 

Lots of good info on the RB forum.....Most of the guys are saying the TM is not as strong as the WS's.

RE: losi lst motor swap
 

But how do they compare to the common MT motor? Like the picco .26, wasp .26, fantom .27, and the XTM 24.7 pro. Not many people are gonna buy a WS7 motor and have a pullstart modded to fit these monsters. I loved myRB WS7, but honestly, i cant see paying 350 for a motor. That motor would have to last me 13 gallons or more to be worth it. The power really isnt the issue with me, i find the picco .26 provides plenty enough grunt for any MT in my collection.

Matt

RE: losi lst motor swap
 

Fantom 27 going in my savage, will wait for other motors to get reviewed more, by the time I kill the fantom they'll be something bigger and better. with more reviews :D

Twedy

RE: losi lst motor swap
 

RB and Novarossi are not pretty much the same. You could say that Novarossi, Rex, and Top are pretty much the same. RB engines are not designed by Novarossi and do not share engine internals (such as crank and sleeve design).

RE: losi lst motor swap
 

I must also advise that RB Concepts never really publish engine specs. It is not their practice. For them to do so is quite unorthodox. However, I must agree that RB engines are really great engines. But again, I would not pay my life savings for one. A Fantom, OS, or any other low cost motor can perform just as well with proper gearings and tuning.

RE: losi lst motor swap
 

Thanks tweety for clearing that up. So safe to say that's why the Rossi is 5 port and the rb is 3. I think the 8p rossi must be a monster. As far as spending goes on these mills the money is always well spent. You can try and compare a picco .26 to a C5 but if you have had both you know the deal. I have found that it is all relative if you know what your doing then you can make a 150 8p race keep up easily with a 250 RB S72 but for a newbie that would all but be impossiable. Either way I'm way off topic I say the picco is more then enough for the LST even the Mach might be enough. In my MT I like my accelaration to be the best it can be.

RE: losi lst motor swap
 

There are 3 versions of the Sirio .27, 2 of which are MORE $$ than the RB .28

http://www2.towerhobbies.com/cgi-bin...io&FVPROFIL=++

Again, I don't have a big block, nore plan to need one soon, but at $350, isn't the RB .28 kinda a BARGAIN for RB? And is or isn't it 'better' for MTs than the Sirios, Novas & even the Fantom, which I thought were primarily buggy engines?

What would make an engine be deemed more buggy or MT-specific??

RE: losi lst motor swap
 

Before all the monster truck madness the term "buggy" engine was just used to differentiate an OFF road motor from the on road motors. The internal difference is usually a more durable con rod, and the on road sometimes has the Turbo plug. Which was said at one time to be too delicate for off road. However, things seem to change over the years. The new TOP .28 is an off road motor, but has a turbo plug head. Kinda like the new WOT break in procedures. 4 years ago you wouldnt find many people even utter the words of a procedure like that. Now they recommend it. Honestly, the as long as you are looking at OFF road motors i dont see how one would be a buggy, or a MONSTER truck specific engine. Sure the larger .24-.28 size engines produce more torque, but much less RPM. So a good .21 geared right will still have plenty of low end punch, and an excellent top end. Either way, these new BIG motors are becoming very common, and more HIGH end companies are making them.

RE: losi lst motor swap
 

so what would be the best motor? the rb? and would i notice a big difference over the stock one?

RE: losi lst motor swap
 

?

RE: losi lst motor swap
 

Yes, im sure you will see a HUGE difference with that RB .28.

Matt

RE: losi lst motor swap
 

i found that novarossi .28 for 345.00. should i buy that instead of the RB. I found a thread about someone having the RB apart and it has none of the porting work that the novarossi has. I am wondering if the porting would make it worse for a monster truck because it must sacrifice low end.

RE: losi lst motor swap
 

Were did you find the Novarossi?