I am not sure how I would be saving money or getting a better motor? Your 5mm stroker is roughly the same as my ski at 1mm bored stock stroke...796 vs 809. I can buy a 4mil stroker crank for mine and be well over 809.
Plus if I went yamaha I would have to buy all new electrics, new motor that would have to be a good stroker motor to compare to what mine is now. Do motor mount work, make driveshaft couplers....and do all kinds of little stuff. I just don't see where losing power and spending a bunch of money would help.
I rode a 6mill lamey non pv superjet a few years ago, the ski was probably 60lbs lighter than mine and motor wise my ski would tow it around all day. Granted it would jump better because of the weight, but it still had nowhere near the power.
Until I ride a yami based motor that actually wows me, I am sticking with my kawi. I have ridden alot of modded superjets and they hit ok on bottom then just get really flat in the mid
..I think half of the people just hopped on that superjet bandwagon and never gave the kawi motor a shot, with a slight port job and selected bolt I bet my tired old kawi will hang with the best of the 850cc and below yami motors. It is hard to get a fair test because the superterds are so light haha. You can't compare a 250lb ski to a 330 pound ski....
I guess I had a built sxr motor in my lightweight hull sxr hull before i had my 5mil in the same hull....
The SXR motor was 805cc (I think?) with..
advent ignition
jetnetics lightweight flywheel
ADA head for pump gas
Wetpipe
TDR waterbox
Vforce reeds
Reed spacers
Freestyle porting by zforce racing
yamaha motor was a 828 stroker with
MSD ignition
ADA head for pump gas (but running 120 and 150psi needing a rebuild)
Bpipe
TDR waterbox
kawi reeds with boysen pedals
reed spacers
xscream porting
dual 44's
Night and day difference between the motors and plus I get over a half hour longer in gas which saves ALOT of money every season. The motors were a wash once I sold my kawi stuff...the only thing I really spent money on was the adaptor plates and couplers that cost me about $250 which I say the gas life paid for hands down.
Kawi motors are just not made for freestyle, the port timing isn't made for it. Your doing what you want which is what you should do, I'm just letting you know what worked best for me in my kawi hull. SXR handling with the yamaha power...it was the best of both worlds.
Oh and...GET THE DAMN HULL DONE BEFORE WINTER!!! Brap.