Medial Pro M2k

[cbreaker]

Hey guys, just wanted to give you a heads up on the new Medial Pro M2k engine.

The M2k has been around for awhile, but this year (actually, this week) there is a new M2k available called the M2k Evolution.

The original M2k is an 8-port engine, JP Black modified. It has been rated at over 2.8HP. From what I understand from a guy that's been running one for a while, it screams.

The new M2k is a 5-port engine. It is still JP Black modified and supposedly rates at the same HP, with just as much high end power, with a lot more low end torque. It has a blue head, instead of the green one on the original M2k, and is made of a better material to help cool the engine better.

I should hopefully be getting mine soon, so I'll let you all know how it runs. At about $370 retail, if the price is the same as the original M2k, it could be a great engine for the price.

----
ps. How many ports is the RB C5 buggy engine? I think it's the C5. I heard it was a 9 port engine?

 

[Çh®i§tiªñ]

The Circuit verion is 7+2 while the off road version is 5+2

Check it out here:

http://www.rbproducts.com/indexEn.php?part=Products&AR_Stat04=RB CONCEPT&Series=C5

That M2k sounds awesome. Good price too for a JP modded mill! Let us know how it turns out for you!

 

[niggle]

Oops! Must refresh my browser more often - admins please delete this post.

 

[cbreaker]

I finally got the engine today.

The carb is on backwards. Well, the throttle is on the wrong side. I'm going to simply pull it off and switch it, but is this normal? Do most other R/C models pull from the other side?

Anyways, can't wait to get off work so I can start this bad boy up.

 

[Ryhton]

yea my ws7 11 had the carb on the wrong way also, just losen the carb bolt pull it out and spin it around. Good luck with the new mill and let us know how she performs.

 

[cbreaker]

Started the break-in today. I got about a tank and a half through the engine. I'm using a method of break-in that a friend of mine used on his M2k. His is the 8-port M2k and mine is the 5-port, but otherwise same engine. Anyways, I'm running the engine at a high idle (wheels almost turning) until the temp reads 200 - 210, then I shut it off. Rinse and repeat. I couldn't get the starter box to turn the engine over at first, I kept having to set the flywheel for the downward stroke in order to give the box enough "runway" to actually get the engine turned over. Once the thing started for the first time and ran a few minutes, this wasn't a problem anymore.

The factory settings on the carb from Novarossi says "Richen the needle a half a turn for break-in." I did this, and it DID start as soon as I put on the glow plug igniter, but it was WAY rich. I couldn't get the engine above 110. Three turn-ins later, the engine temp would move pretty quickly to around 170, then slow down and gradually land at about 205 - 210. Once the break-in is complete, the carb will definately need some tuning =)

I was almost able to completely assemble the clutch and bell without even holding the flywheel. It would take nearly all my strength to turn the flywheel by hand, so I guess they have some pretty tight tolerances on the piston and sleeve!

I can't wait to get done with break-in and get this thing on the track. They should start selling these things pre-broken in =)

 

[cbreaker]

Okay, this engine RIPS. It was easily the fastest car on the track. It had more torque and more high end then all the WS7-II's, all the C5's and all the rest. It's got more low end power then a P5, hands down, according to a P5 owner.

I let a few of the senior drivers drive the car and they said "I've never driven a faster engine then this one."

And this is with the carb restricter still in place. I was able to get 7 minutes out of a tank after hard running - the temps never went over 250. I think I'm going to richen the engine a little bit and bring the temp down to around 225 or so, and at the same time hopefully calm the thing down a little bit.

The carb is very easy to tune. It's a brand new engine and I've only had to touch the needles twice; once to get lean it out from factory settings, and another time to fine tune. I do plan on raising the idle a little bit before the next race day.

I didn't do that well in the races; after all it was only the second day I owned the engine and it's my first high performance engine. The powerband is good - but a lot of the power is front loaded so you have to get used to it. At the track here, I never opened the throttle more then 3/4.

I am extremely happy with this engine and I highly recommend it. If you like crazy power, this is the engine for you. Although I cannot vouch for the reliability of the engine since I've only put about 10 tanks through it so far, if it's like the other JP Mod engines the reliability should be top notch. The engine idles well and it runs very consistently throughout the tank of fuel.

I am curious how much more power I'd get if I took out the restricter.. =) Not needed *at all* on this engine, and I'll get less run time out of the tank, but at some point I'm going to do it just to see!

ps. I'm running a Storm Pro with a coupled Novarossi 9886 pipe (which is a high end pipe) and Crimefighters for tires.

 

[WA2FAST]

Damn, sounds like you've got a beast on your hands. I'm very interested in reading up on this motor... especially since you and others claim that it's even faster than WS7II's and C5's... that's quite a claim. Keep us posted on the wear of the engine as well. That's good to hear that it's that good. Where did you get it from and how much did you end up paying for it? I'm in the market for a new engine here in the next couple of weeks and have been 100% on the WS7II which I KNOW for a fact you can't go wrong with, but this engine sounds to be a beast too and I am always willing to do my homework and research new things. You have my attention, that's for sure.

 

[cbreaker]

Here's the link to the new M2k on the GS web site:

http://www.gsracing.com/gsracing/page.asp?pg=products&catid=20&fatherid=2&rootid=0&id=315

I am not 100% sure, but you may be able to buy the engine directly from GS. They distribute Medial Pro. I've called them in the past at the California office and they were very nice, and gave me a list of local GS authorized hobby shops in my area that could order direct from GS for GS Racing parts.

I managed to get my M2k for a bit less then list, but not that much less. I would have happily paid the $369 for it.

I think that the WS7II is a fine motor. It's a proven motor and I'm sure you'd be plenty happy with it. This M2k is a new engine. It's just a Novarossi JP Mod engine, which have been around for awhile, but it's a new cut.

Apparently, some Factory team drivers for Medial Pro have been using the engine all season under a different name, with great results. I know a guy that has the older M2k and he's had it for a year, and you still can't turn the thing over by hand. This engine is the same engine, with different porting and a new cooling head.

I've been trying to find more information about the engine, but I haven't had much luck. Three guys used the M2k at last year's IFMAR. They didn't win though, but one guy got first in his heat =)

I am pretty sure that the engine is almost identical to the JP Racing FX 21 B-5N, which you can find here: http://www.jpracing.com/ang/catalogue/index.php. It's probably ported different, and it's got a different cooling head.

I haven't been able to find out what size the carb is, either 9 or 10mm. But I am pretty sure it's a 10mm because the carb restrictor in mine says "8" on it and it looks to be about 2mm thick.

 

[WA2FAST]

Very interesting. Keep us updated as to how it goes, I am very curious to find out. I know I would be plenty happy with the WS7II... I will still probibly end up with it, but I am always curious to what is close to it in performance... I just like keeping my options open.

 

[cbreaker]

RC-Nation has the M2k Evolution for $365 right now.

http://www.rc-nation.com/proddetail.php?prod=N60046JP

They also have parts for it like conrods and crankshafts.

 

[WA2FAST]

Good find.

 

[flash]

the M2K is just a slightly modded nova rossi P5. yes they scream and they should last a long time. the older of my two p5's just undertook its 8th gallon of fuel and still runs great. i never started it unless i was at the track and 99% of its life was spent winning races. i recently watched a fellow racer toast his m2k by running it near (maybe higher than) 500deg F. dont do this to yours and it will indeed last a long time.

i love the P5's but if any of you are looking for a motor right now i would have to suggest the newer nova rossi 421b. i just finished breaking one of these in and it has more low and top end than the p5's and is the price very competive. i paid $315 for mine.

 

[WA2FAST]

Thank you for the information. 500 degrees! Holy crap man, he was asking for it!

 

[cbreaker]

Just the fact that the engine was able to achieve 500 degrees says a lot to me =)

The Novarossi 421b isn't JP Black modified, so it won't have the turbo crankshaft (lightened and hardened) and the exterior won't be hard-black treated (which in itself helps lower the temps a couple degrees.) The timing won't be adjusted by JP Black.

I'm sure the 421b is an excellent motor as all Novarossi engines are, but I'd rather pay the extra $50 for the full JP workout with the M2k I think. And the M2k Evolution is indeed a much more powerful motor then the P5; I've never seen the 432b so I can't really call a comparison there. The M2k Evolution is also a new motor, just released weeks ago.

The M2k doesn't look exactly like a P5 that's just black either - the exterior of the engine is a different style. That tells me that the the engines came from different molds. Not to say one is better then the other.. they are just different.

Did your fellow racers' motor have the green head? The new M2k is a 5-port engine with a blue head, similar to the old m2k but improved for low end torque, while still attempting to achieve the top end performance of the 8-port. It comes incredibly close - the word is that the new M2k Evolution is only about 5MPH slower on the top end then the really fast 8-port m2k. It's performance overall is much more impressive then any of the RB's, OS's, P5's, or whatever else they got on the track in my neck of the woods.

Either way, I don't think you can go wrong with any Novarossi engine, really. The carb on my M2k is excellent - it's a simple two needle design (no mid range adjustment) and it so far has held a tune exceptionally well. This is likely the same carb as on many other Novarossi engines, perhaps the 421b as well (looks like it from the photo.)

Hopefully someone will get the 421b at some point over here so I can see how she runs.

 

[flash]

cbreaker- no. his has the blue head. i heard today that it was closer to 600 deg F but you know how rumors go sometimes.

well i got my 421b tuned in today. the top end is insane but the low end isnt much better than the p5 i was running. the acceleration is a lot smoother than my p5 and its fairly easy to hang on to for an expert driver, but if you dont pay close attention the car will be gone before you know it. it does come with 3 extra carb restrictors so i may slip a smaller one in and see if i can get that low end to really wake up. just one and a half more gallons and it will be fully broken in! i can't wait.

 

[cbreaker]

Really? So his m2k was new then, sheesh. I wonder how he let that happen to his engine - I mean, it must have sounded strange when the temps got above 300 or so. I got my m2k about three weeks ago and from what I understand it was the first shipment of the new Evolution, but I could have been misinformed.

My carb has a restrictor on it. It says "8" on top. Since I don't have a point of reference here, I'm guessing that it means 8mm restrictor? So the carb must be like a 10mm carb, since the thing seems to be about 2mm thick I guess.

You mention that slapping on a smaller restrictor could give you more low-end power? I was under the impression that a restrictor would, well, restrict all of the engine power down a notch. This is not true? I don't really know how the restrictor affects engine power. If removing my 8mm would allow for a little less low end power, it might be something to do. I mean, there's so much low end balls on this thing that it can be difficult to control at times. At the track down here there's a small tripple right after a corner - apparently I have the only car that is able to clear all three humps (not to mention the fact that I only need 2ft of runway to do it.) This is good, but if I could tame it a bit, it might not hurt =)

I was thinking of also slapping on a 14t clutch bell; I have a 13t on there now. I've already removed one of the springs on my turbo clutch, and that helped a bit.

 

[flash]

the motor he had was sitting in the case at the lhs for almost a month before he bought it two weeks ago and i was there when they were ordered. nobody really knows how all this happened but when you're running the "A" main and feel like you could possibly win and you never have before... i will quote here..."i knew it was hot but didnt want to back off. i stopped caring at that point". lol if ya got the cash for a new motor then i guess it makes sense to do what you can.

if you go to an eight and a half or nine restrictor your fuel consumption will rise as will your top end. i haven't seen anyone do this because of the decrease in run time. by removing the restrictor you may encounter tuning issues. my advice would be to just learn the power curve and get used to it. i have never had a motor with too much low-end power, but thats just me and we all drive in a different manner. you removed a spring?! damn. didnt think id ever hear that. try raising the idle speed and richening the lsn just a bit. this will help you get a smoother power curve. another thing you can try is adjusting the throttle curve on the radio. some like to slow their servo down and others like to speed them up. on mine i adjusted the throttle to be at wot when the trigger is barely touched- you will probably want the opposite.

 

[cbreaker]

At this point, I think I'd rather lose the race then the motor =) Especially the pricey ones.

It's pretty cool that your LHS carries performance engines; the ones I got around here tend to have a lot of airplane stuff, some monster truck stuff, and a little buggy stuff. The engines you find on the shelf are usually OS engines, or the hyper engine, and occationally a couple RB's (not to say RB isn't performance! It's rare to find an RB on the shelf.) It doesn't make much sense to have my LHS order them for me either, since the prices are kinda marked up too much and you can often order these big ticket items online for a lot less.

Right now I can get about 7 minutes on a tank running it as hard as I can. I like this number. Most of the guys have to fuel up at 5 minutes, so it makes a big difference. If all the restrictor is going to do is give me more top end, then I'll leave it the way it is. I rarely go WOT with this thing anyways, so it wouldn't make much sense. As far as the radio, I do plan on using the exponential/logarithmic function to ease in on the throttle a little bit. However, if I threw on a 7.5 or 7 restrictor, I'd get more low end power and even better run times? Hmm.. something to think about. I'm not worried about tuning the engine really; I've gotten pretty good at it I think.

This is how the power curve seems to perform on the m2k:

It's probably not that drastic (My l33t photoshop skillz at 3am limit my abilities here) but you get a ton of power up front, and then the rest of the power is eased in after that.