I decided to start a new thread real quick so as not to hijack Foureasy's thread on Hybrid Moped/Chinagirl engines any more than necessary. On reading about Foureasy's experimentation with Moped parts, I decided to try installing a Puch moped cylinder head on my bike to see what it would do. I asked a buddy of mine who has a few Puch's if I could borrow a head to try out. If this works out I will buy one of his spare heads from him and try to run it moving forward.
Well, I got the cylinder head, but I decided to slap it on last night without a head gasket bc I thought it would be awesome to run high compression, ('Cause I'm just so hardcore, LOL) and it turns out that the Puch head has SO much more comp stock than our heads, that I literally couldn't kick the bike over to start it! WOW. I actually had to pop it back off for the night and go back to my stock head so my friend and I could go out to meet our wives for dinner. I am going to try again today with a head gasket in there and see if it lowers the compression just enough that I can still start my bike, LOL. If it does work with one single head gasket, then I have a feeling the head is going to be a huge improvement over stock. The size of it alone is incredible compared to a chinagirl. There's no doubt in my mind that the cooling alone will be a boon to the bike's performance, especially on big days on the bike running wide open.
Side note: Yesterday I cleaned my carb and intake, and re sealed my intake on the jug with some red RTV stuff, and while I had my air filter off for cleaning, I decided to see how the bike ran without it. Now mind you i already had a high flow air filter, but I realized I hadn't cleaned it once since I built the bike up two summers ago. Well, when I put it all back together sans filter and ran the bike, it ran really good, and I decided to leave it off for the day. Upon having to revert my head back to stock after failing to be manly enough to start it with the moped head, I was toying with the idea of trying to run it anyway last night and had found a head gasket, and almost put it right back on, but decided better safe than sorry, and slapped the stocker back on there. NOW- I've mentioned elsewhere that my bike really didn't like the Head gasket with the new SCSW pipe, and was a little boggy like that. Where I'm going with this is, I forgot to pull the head gasket again and ended up running around town all night with the head gasket ON, and my near stock head, and NO AIR FILTER. The bike was singing. It was smooth, and it was operating at full power. I'm convinced that the air filter was a lot dirtier than I realized and that it was in fact restricting airflow significantly enough that now that it's off there, the bike is getting a heck of a lot more air than it was. I find this fascinating, though in no way surprising.
The moral of the story boys and girls, is that small changes make a BIG difference in these little machines! What an exciting and engaging hobby we have!
I'll get that Puch head back on there today and see if I can't get it to work. Sometimes I wish I could roll start my bike, but that's impossible with the shift kit.. Oh well, small price to pay!
Well, I got the cylinder head, but I decided to slap it on last night without a head gasket bc I thought it would be awesome to run high compression, ('Cause I'm just so hardcore, LOL) and it turns out that the Puch head has SO much more comp stock than our heads, that I literally couldn't kick the bike over to start it! WOW. I actually had to pop it back off for the night and go back to my stock head so my friend and I could go out to meet our wives for dinner. I am going to try again today with a head gasket in there and see if it lowers the compression just enough that I can still start my bike, LOL. If it does work with one single head gasket, then I have a feeling the head is going to be a huge improvement over stock. The size of it alone is incredible compared to a chinagirl. There's no doubt in my mind that the cooling alone will be a boon to the bike's performance, especially on big days on the bike running wide open.
Side note: Yesterday I cleaned my carb and intake, and re sealed my intake on the jug with some red RTV stuff, and while I had my air filter off for cleaning, I decided to see how the bike ran without it. Now mind you i already had a high flow air filter, but I realized I hadn't cleaned it once since I built the bike up two summers ago. Well, when I put it all back together sans filter and ran the bike, it ran really good, and I decided to leave it off for the day. Upon having to revert my head back to stock after failing to be manly enough to start it with the moped head, I was toying with the idea of trying to run it anyway last night and had found a head gasket, and almost put it right back on, but decided better safe than sorry, and slapped the stocker back on there. NOW- I've mentioned elsewhere that my bike really didn't like the Head gasket with the new SCSW pipe, and was a little boggy like that. Where I'm going with this is, I forgot to pull the head gasket again and ended up running around town all night with the head gasket ON, and my near stock head, and NO AIR FILTER. The bike was singing. It was smooth, and it was operating at full power. I'm convinced that the air filter was a lot dirtier than I realized and that it was in fact restricting airflow significantly enough that now that it's off there, the bike is getting a heck of a lot more air than it was. I find this fascinating, though in no way surprising.
The moral of the story boys and girls, is that small changes make a BIG difference in these little machines! What an exciting and engaging hobby we have!
I'll get that Puch head back on there today and see if I can't get it to work. Sometimes I wish I could roll start my bike, but that's impossible with the shift kit.. Oh well, small price to pay!
