Bryan,
I was going over the SBT installation instructions in anticpation of the arrival of my SBT engine.
Since I have already removed the engine and stripped the parts off the core for return to SBT I would like to know the best way to adjust the pick-up coil timing plate on this engine during re-assembly.
The 1996 720 Sea-Doo engine DOES NOT use an "MPEM" module or Sea-Doo hand held programmer for ignition timing.
The OEM manual talks about adjusting the plate using a timing light but recommends 6000 r.p.m. as the engine speed when doing so.
Since the engine wont be broken in at first, wont this r.p.m. compromise reliability ? Is there a "non-desructive" method to assure proper ignition timing in this scenario ?
Also, what seems to be very important is the timing mark on the PTO flywheel, and its' proper alignment with the crankshaft. Since this end of the crankshaft is threaded and the PTO//Coupler on the HX is torqued onto the crankshart, wont the position of that PTO timing mark vary in final position from engine to engine in relation to the TDC of the front piston and front charging flywheel and subsequent orientation of the timing plate ?
This is all a bit confusing to me and the instructions dont address this at all.
I know the proper advance//retard timing is critical to the engine and dont want to cause a problem through ignorance.
Also, after I reinstall/time a new Rotary Valve and re-assemble the RV side on the intake assembly and OEM oil system, I plan on taking the engine to a dealer to have it pressure tested, then, when it passes, have them re-install the PTO Coupler and front Charging Flywheel.
What is the proper test pressure and duration that the engine pressure test must pass ? I want to be very sure I have NO PROBLEMS before re-installing this engine !
Please advise.
Dave
I was going over the SBT installation instructions in anticpation of the arrival of my SBT engine.
Since I have already removed the engine and stripped the parts off the core for return to SBT I would like to know the best way to adjust the pick-up coil timing plate on this engine during re-assembly.
The 1996 720 Sea-Doo engine DOES NOT use an "MPEM" module or Sea-Doo hand held programmer for ignition timing.
The OEM manual talks about adjusting the plate using a timing light but recommends 6000 r.p.m. as the engine speed when doing so.
Since the engine wont be broken in at first, wont this r.p.m. compromise reliability ? Is there a "non-desructive" method to assure proper ignition timing in this scenario ?
Also, what seems to be very important is the timing mark on the PTO flywheel, and its' proper alignment with the crankshaft. Since this end of the crankshaft is threaded and the PTO//Coupler on the HX is torqued onto the crankshart, wont the position of that PTO timing mark vary in final position from engine to engine in relation to the TDC of the front piston and front charging flywheel and subsequent orientation of the timing plate ?
This is all a bit confusing to me and the instructions dont address this at all.
I know the proper advance//retard timing is critical to the engine and dont want to cause a problem through ignorance.
Also, after I reinstall/time a new Rotary Valve and re-assemble the RV side on the intake assembly and OEM oil system, I plan on taking the engine to a dealer to have it pressure tested, then, when it passes, have them re-install the PTO Coupler and front Charging Flywheel.
What is the proper test pressure and duration that the engine pressure test must pass ? I want to be very sure I have NO PROBLEMS before re-installing this engine !
Please advise.
Dave
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