Honda Spree and Elite 50 Forums

OK, I realize this isn't quite a scooter, but it is a Honda; it is a two-stroke; and most everyone here has probably had one at one time. I have three bikes I am restoring and none of them have spark. So, rather than waste time decomposing the myriard of issues related to the MR175 ignition system, ...

Runs like a charm. So far, most of the things I needed for the 83-84 Aero I have gotten from Yamaha. I have an 84 myself that I have been looking for a piston and rings and if you can get them oversize and what not. I havent seen anything new at all. I dont understand how Yamah parts work on a Hond...

If you look in the 83 Aero 50 won't start post, you will see where the wristpin clip got into the cylinder and ate it up. As usual, a replacement piston and rings are not available for this model. So, just like the gasket before, I went to Yamaha. Below are the piston etc. I believe it was a base 40...

Runs like a charm. So far, most of the things I needed for the 83-84 Aero I have gotten from Yamaha.

OK I took Bear's advice to heart. I went to the yamaha shop and we ordered an over bore piston (40 bore base - I believe used for the razz) bored the cylinder .20 over. We need to put it together, then we'll post the results.

I took the jug to the local Yamaha shop (they do all the borings for all other motorcycle shops in the area) and they think that a .20 over boring will fix the jug. The question is whether I can get an oversize piston, or will it be more economical to buy a used piston and jug, or replace with an al...

martynkim wrote:I have a good oem carb for that bike.

Do you have or know where I can get a replacement piston and/or jug?

I took off the jug. The carb wasn't the problem -- it was the reused wristpin clip. closeup damage.jpg , zoom out damage.jpg , cylinder damage.jpg So, now I have to decide whether to junk and get something else, or rebuild. Any suggestions? Anybody have a good jug and piston for an 83 Aero 50? Any s...

Compression is 30 - 45 psi. I think we found the problem. Since I wasn't riding it when it failed, can anyone give me a likely scenario? I saw a post earlier mentioning a soft seizure, could that have been the cause? If it is, what is the effect and what can be done about it? When we rebult, the ri...

martynkim wrote:I have a good oem carb for that bike.

Thanks, I think the carb is OK. I wish I would have been in contact with you 9 months ago, before I cut down the throttle cable to accept the Chinese carb.

Compression is 30 - 45 psi. I think we found the problem. Since I wasn't riding it when it failed, can anyone give me a likely scenario? I saw a post earlier mentioning a soft seizure, could that have been the cause? If it is, what is the effect and what can be done about it? When we rebult, the rin...

My son was riding his 1983 Aero 50 that we restored. We have about 300 miles on it since the restore. Yesterday it died on him. The way he describes it, it sounds like it ran out of gas. He said it started revving without any power the bogged down and died. The problem is it had 1/2 tank. The bike h...

I am looking at picking up three Expresses. Two are 1983 Urban Expresses and the other is an orange express or unknown year. My questions are thus: How valuable are either of these models? (One urban run but needs muffler cleaned out, carb cleaned, new headlight and a general check over; the second ...

Sorry I didn't keep up with the thread too well. I ended up buying air cleaner housing on Ebay and using it with the aftermarket carb. I had to cut off more of the cable than was stated to get it to work and had to move the needle to the lowest clip setting. The Yamaha shop said the head and piston ...

Finally finished with the rebuild after almost a year. Still having trouble with it bogging and wanting to die when using 1/4 or so throttle, even though it idles fine. Using after market carb.