Bonneville America Forums Forums Technical Forums General Tech what should 1 do?

tuned had the AI removed + tappets set this week
Woohoo goes like the clappers now
my promblem is it still has a rattle in the top end which sounds like tappet's+1 over the vertical fin beside the plugs where the AI was is broken off
i'll be calling on monday about the tappets,what i'm after is your thoughts as to the broken fin in the head mind you it is hard to notice wounce you see it tho its not hard to miss
Benny

I shouldn't think one broken fin would be a problem, still lots of mass available for cooling. I wonder, though, if your chain tensioner might need to be reset?

G'day ED
i realize its wont effect the cooling of the enigine looks ugly thats all
as for the rattle it sounds a lot like loose tappets i'll run your suggestion past the mechanic and see what he reckons
BTW befor tune dyno at 50hp after dyno at 54hp a 8% increase bu lifting the needles, 45 to 48 pilot's i allready had 125 mains

If you still have the fin it's likely you could reattach it with a judicious application of JB Weld (a two part metal filled hi temp epoxy glue). It's not like it's under any stress when its in use.

ED
rang the mechanic asked him about the topend rattle in my engine,he told me its the exhaust on the left side he checked and rechecked and apparently rechecked it again checked the timing,checked the cam's+cam chain tension and it still rattled,shame he didnt tell me this on saturday when i picked it up,back down their tomorrow week so he can pull it apart and have another look,thinking their is something wrong with the bucket it self,failing that start looking at the offending valve

back to the mechanic tomorrow (tuesday) any of you guys enlighten me as to what the problem might be?

promblem solved some one read the micro thingy wrong and fitted 1 wrong shim ended up with .63 gap
right shim fitted good as gold 2 runs on the dyno started at 50 hp ended with 55hp 10% increase woohoo

Good for you! Just in time for spring riding season to commence as well; have fun

Hi Ed
with the climate here in Brisbane we ride all year round mind you its a little chilli after dark we do get to 0% in winter no ice tho which is a blessing

wouldn't worry about the broken fin at all. Have seen many bikes over the years with a missing fin or 2 with no ill effects.