I run my 3300A on 98,after modding the ducts it ran at a too cool 245F as i realized after 30 hours plugs were always black even after repeated
cleaning,did some carb tuning ended up dropping the needle and changing out the main jet temps have risen to 255F,after 2 oil changes using
Camgaurd am going to W100+ as recommended here,
the thing i don't get is why did Jab changed out all those cylinder heads seems like a lot of expense,when i could simply redo my ducts and end up
with a motor that ran "too" cool? Ducts,cut horizontally,lifted 15 at front,30mm at rear,extended at rear i can squeeze fingers into rear gap,aids
airflow to the rear,yes i have read all the stories on closing these gaps ,i disagreed then and still do.
Gaps between cylinders,i tried alu strips,yes they soon cracked,replaced those with extended fibeglass strips that were angled in and when set
hold in place by pressure.
Seems to me the ducting should have been better investigated.More volume and allow more cool air flow through too the rearmost cylinders.
Other issues i have with this motor,rocker bearing shafts appear very small diameter,rockers as far as i can tell have no spring to control side movement,
i can move the rocker sideways and easily hear clicking,i have 2 hours till next oil change,valve clearance check so i will investigate this more
thoroughly, but do these engines have any reputation for higher than normal rocker wear.I will back the adjusters right
off and check for bearing to shaft wear.Is it all the same in the Gen 4?,or have they gone to a hollow and bigger bearing area.
cheers
colin