Honda Spree and Elite 50 Forums

I have an 83 Aero 50 scooter with a bad engine. Instead of repairing the engine, I've decided I would like to do a little experimenting on this super-rad looking platform, and by that I mean attempting an engine swap. I understand this will involve a lot of challenging fabrication and money, but that's half the fun right?.. Right?...
I am fairly new to the scooter scene, So Im wondering what are some popular engines to swap into an aero 50? in particular has anyone ever swapped a gy6 into and aero 50? I did a search and wasn't able to find really any information on the topic, but I just cant shake the idea of a lightly tuned gy6 in this frame!

I've seen a couple spree gy6s not that difficult really especially if you find a bottom mount gy6 then it would be a piece of cake. The hard part is building a mount for a top mount gy6. Why gy6?

Mostly because of the aftermarket support, and Ill admit I do like the look of the monster gy6 fat tire kit. I am open to suggestions though!
And thanks, Ill keep my eyes peeled for one with bottom mounts.

Welcome Alaska to the board.
You will find plenty of opinions about the Aero 50, but the GY6 is not especially a favorite son.
More members will speak in favor of the Honda engines.

Thanks for the welcome motormike!
After a bit of searching I kinda came to that conclusion as well, the Gy6 just seems like a lot more work than it would be worth. Im thinking of sticking with the two stroke now too, as I have much more experience working with them. Unfortunately, the engine in the 83 (NH50, I think?) Aero doesn't seem to have any BBK available, or really anything bolt on or otherwise. Can anyone suggest a Honda engine with bottom mounts that has decent aftermarket support?
Im not (too) scared to make my own engine mounts.

The AF16 or "Dio" motor is the favorite here on the forum. It has a great aftermarket scene has some awesome 72cc bores and can be built up to 125cc.

Buy this motor
viewtopic.php?f=2&t=31195

curtis966 wrote:The AF16 or "Dio" motor is the favorite here on the forum. It has a great aftermarket scene has some awesome 72cc bores and can be built up to 125cc.

Thanks! Ill keep looking for one!

If I wanted to build a 72cc or 125cc, is there a place I could find all the separate parts I would need, instead of having to buy and take apart a stock AF16 in order to upgrade it? Or would that be too easy?

Greetings:


Assembling a reliable and fast 72cc is bolt-on. Mounting the bigger crank and cylinder needed to reach 120cc or more involves stripping the crankcases completely to machine them for clearance. This leads to encroachment into the bolt holes that keep the cases together, seal issues and then careful setup of port timing and intake for the larger carbs needed. Plus the Strokers not all that much faster, and almost certainly less reliable, and not easy for a beginner to get right the first time.

RedEftPerformance or Graphite9 can supply the quality Italian parts for a reliable bolt-on 72cc experience at affordable prices. Both are knowledgeable, fair, and trustworthy.