Originally Posted by
greg.dawn
i know nothing about engins but when i looked at picco i was told rods are sus i hate engins that nead matenice it i seem 2 get more hours out of $120 rossi than more $ engins have trouble with tuning or lack of ha ha
Yes, the rods in the Evo 3 ARE a complete nightmare to deal with!! I just hope that mine will last me the Vic Titles and not blow-out on me!! Otherwise Im left with no engine
But they have fixed that issue with the Evo 4.
Originally Posted by West03
You mention that when it hits 2nd gear the Picco then flies. Which is my point, no engine maker at this time can match a Nova for bottom and mid-range.
One other guy mention that it needs to be geared up and tune near its limit (on the lean side) and then it can match the Nova. Maybe, but how long will it last?
Not too lean, but that with the Picco's you definitely know when you are reaching the optimum tune, just like the Flash 12 or 353 - they like to run hot, somewhere like 230?
For Lilydale, Ill definitely go faster on the gears just so I know Im not over-revving it, just as a safetey/longevity precaution, and then Im just basically going to run it till it dies, which should be in the next 6 months, unless what I did by increasing the lube hole in the rod actually works and it lives for another 6 months on top of that!!
Originally Posted by Italboy
Are we speaking about the Picco Evo4 Edo Modified? Or an other tuned Picco engine?
Im talking about the Evo 3 as that is what I have, but it has rod issues which really let it down. The Evo 4 has addressed this issue as far as I know and they do not blow like they did in the Evo3. Mine is tuned by AB Mods and tweaked by me, and I am yet to see how differently it performs on a larger track - last time I ran that engine I hadn't touched the mods, but now I will see how much it can fly!!
I think the reason it has more torque is because it has a shorter stroke than today's engines (Picco Evo3=14mm stroke, 13.80mm bore) and that is the reason it doesn't quite make the revs like Nova's and others can (Nova Flash 12=14.25mm stroke, 13.70mm bore) With the longer stroke, the crank can be made smaller (rod end) which in turn reduces the harmonic resonance and also gives it the ability to rev higher because of less inertia at X RPM. Im not saying that the smaller the crank face is, the more RPM you will churn out, I thought the less stroke or the more 'square' the engine is the more RPM you will be able to make, but then I remembered why that isnt true.
But enough if my essay
BACK TO THE TOPIC!!!
You would do great with either an RB or a Novarossi - they are the best out there, it just comes down to how you drive.