I will bet money a JP modded Nova 28 will not hold top end nearly as strong as people are claiming.... I dont think its possible for the long stroke Nova 28 to really carry great top end....... Novarossi's in general do not hold top end nearly as well as NInja motors do...

Now before anyone jumps all over me, i have to tell ya my very good buddy owns a true X-dyno.... He has dynoed both stock and modded Novarossi's, and now both stock and modded Ninja 28's.. No contest on top end so far, the Ninja 28 will make an easy meal of any 528 on top end..... the Novarossi 28's bore/stroke/rod length are all wrong for high RPM useage......... FYI the AB modded Ninja 28 is still making 1.6 HP at 39 000 RPM..a Novarossi 28 has gone to bed by 35000 RPM...

Anyways if anyone cares to disprove this, i can have your JP mod 528 tested on a X-dyno any time you wish..... Lets see if the JP Modded 528 really is as wild as people think..... IMHO its going to get its ass handed to it by the modded NInja 28 on top end....But that just my specualtion after doing work to several JP modded mills.... the JP Mills i seen had no timing alterations over stock, and unless you do extewnsive timing work a Noiva 528 is not going to have good top end, and even with extensive port work the long stroke works against high RPM useage.....I tell ya guys no other motor has top end like a Ninja 28, and its proving itsef on the X-dyno

But umm a ninja is a nova rossi..(Mario rossi) why are you so defensive about the ninja, no were in this thread has any one doubted what you said BUT you doubt what others say.

Out of curiosity what JP motors have you timed? Ive run a JP v-spec compared to a regular v-spec, very very different motor.

I am not defensive about NInja.. and I am truly not meaning to come across that way... There is nothing to defend, put the motors in question on a dyno and look at the power curves, the Ninja speaks for itself on this one......

As for a JP V-Spec it may run different then stock, but its port timings are 100% stock.. I never said anything about the way it runs, other then when we measured the port timing we found JP had done zero timing alterations over stock..

I am not joking either, my good buddy has a X-Dyno, and i can very easily arrange to have any engine tested. Adam from AB mods is an excelent guy who is also very interested to see what all these diffeerent motors put out.... I have seen dyno graphs from both modded 528's and modded Ninja 28's, and I know it would take a massive amount of work to get a 528 to rev to the level a Ninja 28 does...and unless JP does extensive port alterations the 528 is not going to run anywhere close to the modded Ninja 28..... I am not trying to defend the Ninja or bash the 528 here, I am just telling the truth based off engine port timing and actual dyno readings..... The Nova 528 needs extensive alterations to timing to even have a hope of running with the Ninja..the Nova has only 170 degrees exhaust timing, the Ninja has 180..the Nova has 122 transfer timing the Ninja has 132 degrees...the Ninja has a 16.8 mm stroke the 528 has 17.6 mm........ So unless JP Mods completely rebuilds the engine it isnt going to match the modded Ninja... But if anyone is willing we can arrange to have the motors in question dyno tested and the graphs overlayed.... I beleive people refering the modded 528's for Truggy application is wrong, I truly feel the Ninja is a much superior platform, and I also dont beleive the JP motor will be anywhere near as strong as people are expecting...... My bet is the motor is dead flat after 30K.......... But I sure would hate to be offering people false information, and would love to see the JP modded 528 on the dyno to see the real truth of the motor... If it dynoes as good as the hype it would be a motor i'd have get for myself...... I highly doupt its anywhere near the hype, as i say without extensive the port timing changes its not going to carry top end like the Ninja, and based off the JP V-Spec JP Mods does not alter port timing on their sleeves...... So limited 170 degress exhaust the 528 will run out of breath well before the NInja.

Anyways hopefully we can see a JP Modded 528 on the dyno.. I may be wrong about it, as i am only human... But my bet is after 30 000 RPM the modded Ninja completely decimates the modded 528....also my bet is the Ninja 28 also gets much better run time then the 528.

If you guys ever buy a JP and put it on the dyno im sure alot of people would want to see that! But as far as some one sending you a engine thats asking ALOT of a person...
keep us informed if/when you guys do get both motors and dyno them.

If the 528 has crazy bottom not alot of rev just put taller gears on it then she wont be such a handle to drive with light switch power but on a dyno the Ninja will probly rev a lot more but in a Truggy MT u gear it right it should be just as good if not better than the POS buget Ninja

I doupt it...gear up the Nova and be prepared to blow thru clutheslike kleenex......The 528 just isnt a truggy mill no matter how you look at it...... same sprikey peaky powerband as any Nova..... Ninja's at least have long broad smooth powerbands.... Nova's are peaky

Why do you call a Ninja 28 a POS budget mill ?

i just dont like Ninja's all to gether not just the .28 i reckon Mugen made a very bad move droping JP to producess these paper weights but thats just me every one to there own really

I love the powerband the Ninja's have, .. I alos like my EVO 2

heres a graph of a EVO 2 vs a Nova 21-7

http://i3.photobucket.com/albums/y55...217BTstock.jpg

I think that the Axial 28RR is a pretty good engine.

You should also consider LRP .28, pretty cool engine. Best bang for the bucks.

Check here -> http://www.myrcbox.com/review_lrp28_truggy.htm

only problem with it is really crappy run times, and it doest last as long....

You cant go past the MRT Ninja Haven't seen a faster motor yet..

I have 45 to 60 seconds more run time than other ,28 italian engines.

For the longivity, few guys bash with this engine in thei MGT still running after 4-5 gallon.

my vote goes to the novarossi 528!!! but it sucks up fuel like a caddi!!!!

second vote ninja 28 then picco 28

Picco 28 is an awesome engine. I have it in my Monster GT. I have 3 gallons in it and not 1 problem with it.