A one-take video overview presentation of the effort:
Per mention in the video, a cover replacement or modification will be forthcoming. But, for the time being, the modified original will suffice.You will surely want to fix that open cover ... You do not want water and snow in all
the belts like you have it there.
Also, ditch the lawn turf tires, and get yourself some nice XTrac snow tires.
Pull up the owner's manual *.pdf off the Harbor Freight web site and get the 420cc base dimensions from the back of the manual. Keep in mind, the diagram is not to scale so go by the listed dimensions and measure... The 301cc 8HP engine barely fits on the flat part of the engine deck and the 420cc motor is a bit larger base-wise. In stock configuration, the 8HP Predator does cause some belt slippage when hitting drifts and such. The 420cc would be worse. 8HP is kinda the limit without redesigning the impeller belt drivetrain.I'm patiently waiting for the predator 420cc engines to go on sale
at harbor freight and then I'm going to be putting one on my st824.
A billet flywheel because the OEM cast one may and has disintegrated under higher RPMs of modified engines.Im curious how a mod like a billet flywheel would have any effect
of a continuous load application like a snowblower?
The 8HP Predator modified ST824 suffers zero engine power issues. The engine hardly changes RPMs at all. But, there is a lot of belt slipping when large quantities of snow or wet/heavy stuff are tackled.I also want to hear more about the 8hp.predators. Im on the fence
between engines to replace my 8hp tec that's not strong enough for
my use. I can get a 10 hp tec but I'm concerned it's also not enough
and will still have the same annoyances of the 8hp tec (terrible carb etc ).
But, it is a drop in replacement.
From my experience, the Predator engine is far smoother, quieter, and just sounds so much more well put-together. In a little more than nine days I've put 7.9 hours of actual snow blowing on the machine. I'm very satisfied.To me the carb and governor on the hondas and clones seem much better
than the tec. Will the 8hp predator be that much stronger than an 8 hp tec
that's in good shape?
As mentioned above, the belt is the current limiting factor in getting all that engine power into thrown snow.The belts concerned me as well. Im also using an 824.