Hello, I just installed a Polini kit on a ZA50. I just started it up for the first time, and I noticed a "ping" sound. It is a metally sound, like if you hit a screwdriver on the cylinder head. It follows the revs of the engine. Yes I didn't forget the head gasket. Whats the deal?
Setup:
Polini kit
Simonini Exhaust
15mm Bing with 102 jet (too big probably)
Matched ports
Stock Head, stock timing.
base gasket?
Although we are talking about ZA50 here....many possibilities for clunking sounds :]
Nope I didn't forget any gaskets. It is a ping sound. It corresponds with every revolution and follows the engine speed. ping ping ping pingpingpingping
I should note it is not overly loud, but I noticed it right away.
well ,it might not be pinging, sometimes you will get ring slap with thones engines...and thats pretty normal.
you could also be hearing the reedvalve, since your bike didnt have one before
but if its actully "pinging" as in detonation..you just need to use a higher octane fuel , midgrade should do the trick, or just get some FRESH gas..not 2 week old gas fresh gas.
Nah -
That's the Polini 'sound' mine made the same exact sound when I dropped it on there. 1200+ miles later and it's still a champ.
It's just a new deal for you, man. Welcome to the world of Polini.
What plug are you running?
its the polini "tin" sound i bet they don;t sound solid at all when they r new
Yeah, but just to be sure, what plug are you running? I had two guys come into the shop this week, both were running BP6hs plugs and the piston was hitting the electrode...GROSS.
what you mean you cant just use any old plug from home depot lol
I'm running a Bosch plug... but I don't see a marking on it. I'll pull the head and check it out...
Oh yea, what plug should I be running? I'm looking at buying some new spares. Bosch W5AC?
NGK, either B6HS, B7HS or B8HS. 6 is hottest, 8 is colder.
With my setup, should I run a hotter or colder rated plug?
B8HS
the puch polini is a noisy kit. It's nothing to be alarmed by.
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