Riketsu

iTrader: (34)

Use this clutch setup:

0.7 mm bell clearance
10.2 mm spring adjust (from the top of the crankshaft)

This setups is using the very hard spring, lightweight flywheel, grey clutch show and lightweight clutch shoes.

Be sure to get a Palmaris Conrod for the Engine.

PS: Let me know if you need a backup engine, I got a NIB one here that its up for sale.

Dynamite

there not too bad, but you get what you pay for... i wouldnt bother putting another liner etc into another one.

M7H

How can you tell?
What's the thickness of the shim behind the flywheel?
Also the conical under the flywheel can differ in size.......

This 10.2mm is not the same for everybody.......

jag

Still working well?
What settings are you using on that NR carb? I just installed an RB carb on my new ZX12 for break-in and found that I needed to lean both screws quite a bit (especially the low speed) to get the engine up to temp. I know I will have to richen them up when I put the engine in the car but I am curious what you are using.

Thanks,
jag

Riketsu

iTrader: (34)

Conical behind the flywheel is the same for everybody. Mega Picco engines have a special one that no other engine can use. (Their shaft is smaller than NR based ones).

This is for Mugen MTX-3, Im pretty sure it changes for other car brands. This length is measured with a caliper from the top of the shaft (no screw) to the spring adjuster (the bottom part). If I aint mistaking, its about 1 to 1.2mm if you deduct the length of the crankshaft.

Riketsu

iTrader: (34)

Mega Picco carb works just fine. The engine just likes it rich on both needles. It should start very rich the first few laps, then lean itself. My engine is about 6 turns out on the low needle and about 5.5 on the high. This changes with every engine/fuel used. But maybe using a NR carb will work better for you.

jag

Yeah I know the Mega carb works fine but I wanted to try something different. I wanted to see if the Novarossi carb was better... so far, I would have to say yes. But I have only run the engine 20 minutes on the bench and 5 tanks in the car. It's too soon to really tell but I can say the car was very fast.

Edgar Millenium

JAG:

Mega Picco engines, doesn't need to have long breaking periods, after 5 tanks the engine is ready to the track. This engines doesn't have the pinch at TDC that Nova engines have. Remember to change the Conrod at least after 2 hours of used, if you doesn't punish it too much, if you like to run on the lean side, change at leat every hour.

quietstorm76

iTrader: (12)

I like the Mega 12 and looking into the 21 for my Mrx3. I was wondering how Picco get's by without the extreme pinch of the Nova's? They seem to last almost as long if you don't abuse them and change the rod on schedule.

Edgar Millenium

Quiet::

One of the main differences betwen mega and nova is the thickness of the sleeve. MegaPicco have thicker sleeve what cause less expansion. The pinch on the Novas compesate de expansion of the sleeve.

quietstorm76

iTrader: (12)

Edgar,
Thanks for that info. One more question, do you know if it's true that this engine(ZX21) is no loger in production?

M7H

Let me give you some insite information comming from Holland...

Yes, they stopped the production, for the winter season.
MS and RB (who?) went to Picco Italy, to discuss updates (mostly on the reliability side) of the engines, in spring next year, there will be a ZX21 "evo2"

But don't tell this to anybody else. it's confidential.......

HELLOkitty

will there be a new MEGAMAX motor?or is this a rumor?

SalvadoriRacing

where did you hear about that?

Riketsu

iTrader: (34)

Well guys... Im selling a NIB engine and a once used pipe. Here are the links for those interested

NIB Engine:
http://cgi.ebay.com/Mega-Picco-ZX12-...QQcmdZViewItem

Once Used Pipe:
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=6019122093

[Fixed links]