87 Spree w Af18e swap

[onlyschassis]

Whats up,



Some background on me and scoots: in highschool i worked for a small independent moped repair and sales shop in oahu called Mister Scooter/ Moped Doctors circa 2014-17ish learned a ton about 2t and 4t bikes there. First moped I completely put together was a ghost vin Yamaha razz, started from just bare frame and put it together with spare parts from around our shop for about 100$ and then bought a 60cc BBK kit i believe from EBay. I think the seller is an OG of the forum. Sold that then moved on to a SYM DD50, bought it all stock for 700$ i think with a stock style YMS pipe. Put a Polini corsa on and did some light tuning and was hitting 65-70 very easily on flats. Ended up selling the sym for around 900$ to move to the mainland



I've been itching to ride for a while so I picked up an 87 spree a month or so ago with the plans of restoring it and doing a dio swap. Originally I wanted to do an AF16e, I'm from Oahu hawaii so I'm used to having an abundance of parts, frames, motors etc. being available locally... Now Im in the suburbs of Chandler AZ with basically 0 parts available.

I didnt know how long it'd take for me to find an af16 out here so I decided to just fix up the af05e and get the spree running for now.

Cleaned the carb, got new lines, cleaned the petcock, gas tank had light surface rust ( the gas cap was off the tank for who knows how long till i got it), and put fresh gas. When I picked up the spree I originally thought it was completely empty in fluids so I threw it in the back seat of my gf's camry lol. Come to find out the oil tank was full to the brim.... thank god it didnt spill 
Anywho I got the spree running and getting to 30mph pretty easily but the carb started to leak after a good pull from overflow so I put it on the side so I could look for a new bowl gasket. Ordered a filter and plug from Noiseguy on ebay and was gonna put it in until i realized my front wheel is completely bent so I put the spree on the side for now while i get a new wheel and some new rubber to replace these dry rotted ones.



I got impatient...Bought an af18e from an AF28 bike, arrived in 3 days. So now Im going to be working on stripping the spree down and getting everything ready for the swap. My af18s missing an exhaust flange ear, the kicker gears are all messed up, and I need a carb and air box setup...



Goals for this build is easy 60mph and being able to ride a decent distance. Gonna use oil tank as second gas tank.

Think im gonna run a YMS pipe or something similar with a Contessa bore and a 21mm carb so I wont drink all the gas riding WOT.



Any suggestions on parts or etc? This is my first dio swap and first time building a motor from the bottom up. It's too hot to be out riding now so Im gonna build in the summer to enjoy after.



Dont know how to post pics yet, gonna try at home when Im not at work lol

[repherence2]

welcome from the forum. i am from oahu and i am familiar with Mister Scooter / Moped Doctors and salesman Robert. did you work at a moped shop in Pearl City, the one run by the Japanese woman?

you could just do the same modifications that you did on your DD50 to your af18e. i know the gearing is different for sure between the af18 and the DD50 engines. add to that, the DD50 has the same size pulley as the ZX transmission.

you could follow the tried and true formula from honda forum, stock honda crank and bearings (or you can go with the Malossi full circle crank), Polini Corsa, and a Scorpion style pipe. you can be part of the fad and get an Arrow pipe, but if you do research you will find that a lot of people's silencers on the Arrow comes apart over time. i am sure this can be remedied if people take the time to look over the assembly and fitment of the Arrow silencer. however, if you just slap that exhaust together right out of box, pretty much guaranty the silencer will rattle apart and fall off. the fitment has to do with the internal perforated tube in the silencer as well as how it sockets on to the pipe. both ends of the perforated tube are threaded and out of the box, they are not evenly threaded into both of the end caps of the silencer. the Arrow pipe comes with a large o-ring as well. nothing tells you what to do with the o-ring and the pictures of what i seen in regards to the silencer clamp, i am sure that most people install the clamp incorrectly. the clamp as internal grooves on each end of it. i am pretty sure that the aft groove is supposed to clamp around the outlet end cap of the silencer and the large o-ring is supposed to go on the silencer body and it should be positioned in way of the forward groove of the silencer clamp. but if you set it up that way, the clamp screw is that comes with the pipe is not long enough to be able to close the clamp. simple fix, go to the hardware store and get a longer screw/bolt and it will work.

you could also go with the Yasuni C16 exhaust. there are a couple of people that have fitted the exhaust. Corsa + Yasuni C16. or you can do the Oahu combo of Corsa + Scorpion.

[808ministroke]

I worked for a moped rental place and we actually bought our scooters from Mr. Scooter back when the shop was on king and Eisenberg Matter of fact my very 1st stock forestroke scooter That was new anyways.... Pretty sure I paid 700 for me Actually he gave me a 100 bucks off because we worked together anyways I have my very 1st DD50 block sitting in front of me right now never mess with that engine style before so I can't say what I know for sure to be the best set up but but if everyone else is right then it seems to be Course a Mini stroke or not PG short is short or pg long.... Short is for higher RP m's I'm pretty sure the long is much easier to tuneasier to tune good luck with that and Aloha