Surfriding ITS REALLY TIME TO MOD broke 2 mounts and nearly lost the ski a few hours ago

550surf

550surf

can i be given a list of parts to order from ebay for this engine. i dont mind spending a few hundred to obtain a HIGH COMPRESSION motor.

This is what im already thinking, please add to this or suggest extions :

- full top end rebuild ( ill get the entire kit this time)
-bore and hone. hone if it doesnt need a bore...
-new carby with that fuel pump or whatever that thing bolted on the wall of the 650 hull is, pre sure its the carbs fuel pump right?

anyways,
how else cam I get compression.

all suggestions welcomed
 
TMali

TMali

Location
MN
If you want more performance ditch that stock 28mm carb.

Look for a later model 38mm 650 carb or upgrade to 44 mikuni.

You will notice way more then just bumping up the compression, but both together will work very well.

If you get the compression bumped i would go with 180psi and run 91-93 octane. Any more compression than that and you will be flirting with race 110 octane gas.
 
TMali

TMali

Location
MN
mxcrazy012 said:
ditch that 650 and just buy a 750 if you are willing to spend several hundos on that. it will bolt right in with no mods other than a pipe.
Click to expand...

Plus electronics, carb and getting creative sometimes

Whats the point of putting in a bigger motor with the same restrictive pipe

To do a 750 swap and notice a big difference if will cost you abit
 
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