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Old 08-01-2002, 09:24 PM   #16
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The stock carb is OK; don't get that wrong; it's just that the Nova carbs are very good and everyone knows about how to set them to get a good starting point. Oh and my xs12 carb only mic'd out at 5.3 mm on the bore, rumor has it that Collari spec'd there's this way to get higher air velocity for the mixture.
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Old 08-02-2002, 09:36 PM   #17
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Old 08-05-2002, 09:29 PM   #18
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Collari Xs12 is very fast and power. I put it on the serpent impulse with RB X12 tune pipe. It has the fastest straight but maybe tuning is important or it will break the conrod.
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Old 08-05-2002, 09:42 PM   #19
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Maybe it's the difference in the atmosphere, but we haven't had any problems getting our Collari's to run. We tried them off road and found they had way too much bottom end. The had to much bottom end for rubber tire on road as well. Top end they seem about the same as a MT12. They don't have quite the top end as an RB, but they make power where you can use them.
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Old 08-05-2002, 10:08 PM   #20
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I don't know, maybe that nova carb does make a difference, mine will pull very hard on the top end, and I can very confidently say it will pull an RB all over the track(and I have both). The power band seems peaky though. It's almost as if it is coming down in revs too much when off throttle.
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Old 08-06-2002, 05:43 PM   #21
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hey, im new to this forum, and i just bought a xxx-nt drake edition, rpm long shank rod ends, mip shiny cvd kit, mip shock o-rings, and a dynamite pullstart header for se engines, and i am about to buy a collari xs12pullstart for it, im the kind of person that has to have the best stuff, so thats why i want this engine and kit just for playing around on my street and yard and when i go to classic car shows with my dad(gets kinda boring after youve seen all the cars, and it it funny at how many people are more fascinated by a little 1/10 electric tc than the real 500hp hemi's), it looks awesome, i was just wondering if, with the stock carb, i can learn to tune it, it is my first nitro, ive heard piccos are picky about their settings, would an os carb fit? or would i be better off with the nova/mugen carb, the xxx-nt will accept slide or rotary, i dont really care which one, just so it easy to tune, more time playing/less time messing around with the engine. could you give me some prices, i would prefer to buy it from towerhobbies or stormerhobbies, so could you guys help me find a carb that would fit and make tuning easier from those 2 places, or i could just keep the stock one if itsnot that bad/hard to tune. also, what glow plugs are good for winter, and what ones would work best for 75-90degrees, and what temp device is good, is the mip temp gauge2 a good one to use, its a great price.
thanks for all the help,
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Old 08-06-2002, 07:41 PM   #22
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There is nothing really wrong with the stock carb. however there are no instructions for settings, zilch. What I meant by my nova carb statement is that the starting points and end points are well known(what break in is; what's too lean, etc.) The stock carb will work, it may be tough on the inexperienced though. I would snag a used Nova off ebay or the trading forums and use the carb it comes with after tearing it down to clean it.
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Old 08-08-2002, 12:58 PM   #23
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hey, thanks for the reply, what about the hpi .12 c12 evoII pullstart, its only like 10 bucks more, its a nova engine, does it have that carb that you guys are talking about? is it an easier engine to tune? more/less power than the collari/picco? will i like them both the same? is one more durable than the other? they both have two piece heads too.
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Old 08-08-2002, 09:51 PM   #24
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Judging from your question: Flip a coin it won't make a difference. There is actually little difference on the track until you get to the highest levels. Get yourself an OS TR or MT12. I found out that the evo2 is the same as the evo1 Same engine, I thought it was supposed to be a short rod Nova. Nope. Same old long rod Nova as the original c12. I guess it must be the heatsink head that makes the extra .25 HP.

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Old 08-09-2002, 09:33 AM   #25
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i want a pullstart, so i guess its between collari xs12 and hpi evoII, thats a hard decision. even though evoII the same as the old nova, is it still overkill for a 2wd truck? if so, sweeeeet, wheelie time
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Old 08-09-2002, 10:54 AM   #26
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2wd truck? CVR pullstart. The Evo2 is a waste of money IMHO.
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Old 08-09-2002, 01:52 PM   #27
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why is it a waste of money, just for that truck, or the overall engine? and are hpi .12R evoII, RB C12 and novas engines all exactly the same/ just different heads? do they all have the exact same sleeves, porting, carbs(slide and rotary) and everything?
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Old 08-09-2002, 04:37 PM   #28
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Yes the c12s should all be the same. I just think HPI stuff tends to be overpriced. But then again so will a CVR because you'll have to get it from Tower. The RB c12 may be your best bet then. You could probably get one of those for cheap at...www.ultimatehobbies.com; you'll have to call though.
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