timing advance/flywheel

[yankeeboy]

I just got a milled head and flywheel for my '96 sxi, and am wondering if i should get a timing advance since ill be working in that area anyway. ive heard about pre detonation and am wondering is the timing advance could be good or bad.

Also i know there have been threads about flywheel removal, but i could not find anything real specific. I need to know how to get it off, can some one tell me how? anyone know torque specs for head bolts?

Im also looking for more to do to my ski for bottom end for around $250
mods so far ( wet pipe, ww cone, 8/16 prop, soon milled head/flywheel, rd scoop grate, umi ride plate, 0 degree bar, finger throttle, polished intake manifold, footholds )

thanks, nate

 

[SUPERTUNE]

Advanced timing does help a stock motor, even with a milled head, just be careful with extended wide open runs, but for playing around and freestyling more timing is a must. I think you can use a 3 bolt puller on a kaw flywheel if it has the threaded holes on the backside. If not, use the threaded rotor type puller for removal. Headbolt/stud nut will be fine at 20 ft-lbs...

 

[adet16v]

Advanced timing does help a stock motor, even with a milled head, just be careful with extended wide open runs, but for playing around and freestyling more timing is a must. I think you can use a 3 bolt puller on a kaw flywheel if it has the threaded holes on the backside. If not, use the threaded rotor type puller for removal. Headbolt/stud nut will be fine at 20 ft-lbs...

yeah you can definitely use the a 3 bolt puller on kawi flywheels, available at advance auto, pep boys.... for about $15

 

[Mouthfulloflake]

My old kaw750 used a large threaded bolt in the center of the flywheel, the thread pitch and dimensions have been posted on this board and the other one before.

it screws into the center and pushes the flywheel off.

 

[Mouthfulloflake]

a quick search gives this.

18 x 1.5

 

[steve802cc]

My old kaw750 used a large threaded bolt in the center of the flywheel, the thread pitch and dimensions have been posted on this board and the other one before.

it screws into the center and pushes the flywheel off.

Yup that's how the 750 flywheels come off.
When you remove the flywheel bolt you will see that the inside of the flywheel before the taper is threaded.
Thread the large bolt into these threads and when it butts up against the end of the crank it pushed the flywheel off.

Steve

 

[Waste Land]

And for good measures. Impact wrenches are your friend when taking flywheels off...sometimes small torches are your friend too.....and even a hammer to tap on the flywheel bolt after every try.

I've had them come off easy and then really hard to pull...but then again i was trying this with only like a 50lbs tank, lol

 

[meatball]

I bent my last cheap flywheel puller doing the hammer trick with a breaker bar. I now use a harmonic balancer puller, much more heavy duty :biggthumpup:

 

[yankeeboy]

thanks everyone. As for the timing, i have a msd system lined up, and that should definately help my bottom end. Ill probably be taking my flywheel off soon, so thanks for the help! i looked over a bunch of threads and only found one or two that helped, but i now i know.

do i need a gasket for my flywheel cover, i cant find them anywhere, and i also need to know how tight should i torque the flywheel along with my head il be changing.

 

[Mouthfulloflake]

the timing cover has a large O ring.

the head is 22 ft lbs, start at 11, and and work your way up ( a few lbs per step in order of the bolt numbers)

Not sure on the flywheel torque value, Im thinking about 75 ft lbs.

thanks everyone. As for the timing, i have a msd system lined up, and that should definately help my bottom end. Ill probably be taking my flywheel off soon, so thanks for the help! i looked over a bunch of threads and only found one or two that helped, but i now i know.

do i need a gasket for my flywheel cover, i cant find them anywhere, and i also need to know how tight should i torque the flywheel along with my head il be changing.

 

[yamaslut]

be very careful on how far you thread the bolts into the flywheel. I know I destroyed a stator on a 650 kawi threading them in too far.

 

[steve802cc]

Nick it doesn't work that way with the 750 flywheels.

yankeeboy here's a couple of pics for you of a kaw 750 flywheel and the bolt used to pull it.
When pulling the flywheel I'd put a washer in before the bolt so there no chance of damaging the end of the crank.

Later
Steve

 

[Scorn800]

Damn Steve
did you use that flywheel as a bouy weight?

 

[steve802cc]

Naw it's just been sitting around since I haven't run a 750 in years. Mostly lite surface rust.

 

[douglee25]

Just be careful because I believe the SXI motors already come advanced. The SX motors do not.

Doug

 

[yamaslut]

Nick it doesn't work that way with the 750 flywheels.

yankeeboy here's a couple of pics for you of a kaw 750 flywheel and the bolt used to pull it.
When pulling the flywheel I'd put a washer in before the bolt so there no chance of damaging the end of the crank.

Later
Steve

yeah.... I see that now... :bigeyes:

 

[GDFL]

be very careful on how far you thread the bolts into the flywheel. I know I destroyed a stator on a 650 kawi threading them in too far.

X2

 

[steve802cc]

Just be careful because I believe the SXI motors already come advanced. The SX motors do not.

Doug

I think the sxi is 4 degrees more than sx
Steve

 

[Mouthfulloflake]

msd used to sell a retard module for use with the timing advance, plate, and an enhancer, to retard the timing up top on the sxi engines.

I used to run an enhancer on a 750sx with the advance plate, and had no problems.

the idle was slightly rougher though.

 

[SUPERJET-113]

Dont run the advance plate with a MSD Enhancer on a 750 kaw motor. One or the other or your asking for a melt down. This is a known fact on the 750 engine.