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amsoil should be good

I have a question how does it run now? we need to now your compression if its down you could be losing 10hp

small pin is a bad motor the reason why they broke cranks and pistons and power is only 58 hp If there west coast carbs and you mill the head and seams to run right you might be lucky and there tuned if its running correctly now? I bet your down to 130psi or so which is mega from 180psi its a...

You got a good pipe! that pipe runs good probably close to factory pipe I have that same one you need to get your psi up to 175-180 and a bigger prop the stock aluminum is a horrible post up a compression test numbers and you want a lightened flywheel can you post a pic of the back side of...

If it was me I would go 1.50mm over with the wiseco's with the 2 lubrication port holes (like pin holes) on each side. A milled head and a dales total loss cdi it uses half the power of a msd, so it can run upto a weekend wereas msd is like a day if your lucky. if its not fast enough then do...

herers a cc chart for the 650, you can find dirtcheap pistons on ebay and pwctoday http://www.wiseco.com/ProductSearch.aspx wisecos you dont want to lean out it is I belieave, they make more power over a standard piston

advantage of a big pin and factory pipe , you wouldnt need to mill which is alot less wear on the crank the motor wont be highstrung ,more dependable like a 650 motor would be ported. really 632cc you can go 2mm over like 667cc but thats last bore but cylinders are very cheap 650 has a very...

eitherway the 650 will excellerate just as fast, 55mph is pretty much hull speed on these maybe a few more you will be at 46-48mph with the 650sx and the factory pipe the mill and prop, and it will pull, you will have to hang on! a whole new ski

big pins a good motor it has raised ports so its basiclly mild ported i would say @75hp stock compared to 52 of the 650sx but if you dont run a factory limiteded pipe or the nynja c4 its a waste if you ran a 650 pipe on that big pin you would drop to 64hp roughly you need all that room were the...

i havnt seen any different bumpers but i have seen some nose braces made like the 550 stuff

I'd use the 40mm and l belieave the 750 40mm intake bolts up l Might be wrong though on the manifold

Were they reusable on the 650sx?

Must be the line cuz the bowl keeps filling up and cuting out. I should delete it

I'm not sure lve never delt with one before?

Im wondering why my seperator keeps filling up with water

your pump and prop. Get a pump and .5" more pitch stainless steel prop. Also if your compression is below 140 its really gonna start to hurt performance

How much psi drop .010? If l went to .020

You want a o.p winged channled plate

Why am l repetatly getting full seperators of of water about 4 now?

Whats stock headgaskette thickness 87 kawi 650sx