Honda CT70H Flywheel

[oldct70]

Purchased a 1972 green CT70H 4 speed manual clutch. Does anyone know the differences between flywheels, 4 speed manual vs. 3 speed automatic? My take is that the 4 speed had a timing advance mechanism inside the flywheel as the 3 speed did not? Any help would be appreciated.

 

[grumpyed]

You have it right.You can use the 3 spd. unit but be sure to time it to the 3 spd. specs. Power will be down a bit though without the advance.

 

[minibikedude]

There two different brands of ignition systems on the Trail 70's, 4 speeds are different than 3 speeds. If I remember correctly the shaft size is different between the two brands.
Try finding a SL70 or XL70 flywheel, There the same and sometimes easier to find on eBay since they made those for 6 year all together.

 

[minibikedude]

I just checked eBay, Becarefull there is a couple of seller saying there flywheels are for SL70,Xl70, CT70's If there Hitachi there not the correct one for a 4 speed engine. The 4 speed flywheel has the timing advance weights on the inside of the flywheel that advance the points. I think they were made by Mitsubishi I have 2 of them and can remember the brand for sure with out opening the flywheel covers and looking, But they are not flat on the front side of the flywheel like the 3 speeds. There domed shape on the front and made of steel.

 

[1stlegendtx]

I just checked eBay, Becarefull there is a couple of seller saying there flywheels are for SL70,Xl70, CT70's If there Hitachi there not the correct one for a 4 speed engine. The 4 speed flywheel has the timing advance weights on the inside of the flywheel that advance the points. I think they were made by Mitsubishi I have 2 of them and can remember the brand for sure with out opening the flywheel covers and looking, But the are not flat on the front side of the flywheel like the 3 speeds. There domed shape on the front and made of steel.

This is correct!:thumbsup::thumbsup:

 

[oldct70]

Thanks guys for the info. Just so I understand correctly, the sl70 and xl70 used the same flywheel?

 

[minibikedude]

Yes they do!
FYI.The Sl70 and Xl70 have a better Cam, Intake and Carburetor over the 4 speed CT70.

 

[Mini Motors]

This site has microfiche for all Honda's. Use it to compare part numbers of the 2 different models.

MrCycles Honda Kawasaki Polaris Suzuki Yamaha Motorcycles ATVS Scooters Utility Vehicles

I'm so jealous. I've been craving an H model for years.