New on forum and need help

[sunsetpolo]

Hello guys im new on forum and i need help sorry for my bad english im tried to put 27mm carb on my bike but i cant find welder never mind. Now im gonna buy reed valve and 21mm carb (im gonna make windowed piston) i found this items

https://tr.aliexpress.com/item/1005005553738018.html?businessType=ProductDetail&shareId=21827957522&srcSns=sns_Copy&spreadType=socialShare&bizType=ProductDetail&social_params=21827957522&aff_fcid=a6f2d379a92049c39a250f60533aae00-1748203879044-08782-_mNXl0mP&tt=CPS_NORMAL&aff_fsk=_mNXl0mP&aff_platform=shareComponent-detail&sk=_mNXl0mP&aff_trace_key=a6f2d379a92049c39a250f60533aae00-1748203879044-08782-_mNXl0mP&shareId=21827957522&businessType=ProductDetail&platform=AE&terminal_id=e480fa89a23d43a5b5d0998f0245f929&gatewayAdapt=glo2tur

https://tr.aliexpress.com/item/1005003395160330.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.3.1b5cIiGxIiGxmY&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40196.439370.0&scm_id=1007.40196.439370.0&scm-url=1007.40196.439370.0&pvid=753b0a30-37e4-456d-87fd-40211a8fc3a8&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40196.439370.0,pvid:753b0a30-37e4-456d-87fd-40211a8fc3a8,tpp_buckets:668%232846%238109%231935&pdp_ext_f=%7B%22order%22%3A%2234%22%2C%22eval%22%3A%221%22%2C%22sceneId%22%3A%2230050%22%7D&pdp_npi=4%40dis%21EUR%2121.99%2111.79%21%21%2124.30%2113.03%21%40210156fc17482050095287230eaedf%2112000025587563131%21rec%21DE%216244007410%21ABX&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A

Do you recommend these, what are your suggestions? I will order them from Germany. My cousin will deliver them to me. I have limited time. The last day is June 20. My budget is 60 euros. pls help guys

 

[Johnny_]

Hello guys im new on forum and i need help sorry for my bad english im tried to put 27mm carb on my bike but i cant find welder never mind. Now im gonna buy reed valve and 21mm carb (im gonna make windowed piston) i found this items

https://tr.aliexpress.com/item/1005005553738018.html?businessType=ProductDetail&shareId=21827957522&srcSns=sns_Copy&spreadType=socialShare&bizType=ProductDetail&social_params=21827957522&aff_fcid=a6f2d379a92049c39a250f60533aae00-1748203879044-08782-_mNXl0mP&tt=CPS_NORMAL&aff_fsk=_mNXl0mP&aff_platform=shareComponent-detail&sk=_mNXl0mP&aff_trace_key=a6f2d379a92049c39a250f60533aae00-1748203879044-08782-_mNXl0mP&shareId=21827957522&businessType=ProductDetail&platform=AE&terminal_id=e480fa89a23d43a5b5d0998f0245f929&gatewayAdapt=glo2tur

https://tr.aliexpress.com/item/1005003395160330.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.3.1b5cIiGxIiGxmY&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40196.439370.0&scm_id=1007.40196.439370.0&scm-url=1007.40196.439370.0&pvid=753b0a30-37e4-456d-87fd-40211a8fc3a8&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40196.439370.0,pvid:753b0a30-37e4-456d-87fd-40211a8fc3a8,tpp_buckets:668%232846%238109%231935&pdp_ext_f=%7B%22order%22%3A%2234%22%2C%22eval%22%3A%221%22%2C%22sceneId%22%3A%2230050%22%7D&pdp_npi=4%40dis%21EUR%2121.99%2111.79%21%21%2124.30%2113.03%21%40210156fc17482050095287230eaedf%2112000025587563131%21rec%21DE%216244007410%21ABX&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A

Do you recommend these, what are your suggestions? I will order them from Germany. My cousin will deliver them to me. I have limited time. The last day is June 20. My budget is 60 euros. pls help guys

Hello, and welcome to the forum!

We really need to know, what engine do you have?

The reed valve looks alright, people do have trouble with them sealing and the hardware breaking. If you have rubber gasket maker in a tube and a way to upgrade the hardware, they can be alright.

The 21mm carb is probably too big. A 19mm carb is plenty for the true 85cc engines, which are the biggest ones in production. Also take note the engine side of the carb, where the rubber pipe coming off the reed valve will clamp to, is 35mm on the carb you're looking at, but the reed valve tube is 25mm max.

Here's a 19mm carb, notice the mounting tube is 25mm. Same as the reed valve.

https://www.aliexpress.us/item/3256808389763964.html?spm=a2g0o.productlist.main.37.baed2e85s5qiTC&algo_pvid=92700bdd-d5af-43b6-aa0e-79f0ee8f43e0&algo_exp_id=92700bdd-d5af-43b6-aa0e-79f0ee8f43e0-36&pdp_ext_f=%7B%22order%22%3A%2222%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21USD%2122.78%2122.58%21%21%21163.06%21161.63%21%402103247017482193262507128e0406%2112000045793824516%21sea%21US%210%21ABX&curPageLogUid=lBnWlVI7vEPG&utparam-url=scene%3Asearch%7Cquery_from%3A

 

[sunsetpolo]

Hello, and welcome to the forum!

We really need to know, what engine do you have?

The reed valve looks alright, people do have trouble with them sealing and the hardware breaking. If you have rubber gasket maker in a tube and a way to upgrade the hardware, they can be alright.

The 21mm carb is probably too big. A 19mm carb is plenty for the true 85cc engines, which are the biggest ones in production. Also take note the engine side of the carb, where the rubber pipe coming off the reed valve will clamp to, is 35mm on the carb you're looking at, but the reed valve tube is 25mm max.

Here's a 19mm carb, notice the mounting tube is 25mm. Same as the reed valve.

https://www.aliexpress.us/item/3256808389763964.html?spm=a2g0o.productlist.main.37.baed2e85s5qiTC&algo_pvid=92700bdd-d5af-43b6-aa0e-79f0ee8f43e0&algo_exp_id=92700bdd-d5af-43b6-aa0e-79f0ee8f43e0-36&pdp_ext_f=%7B%22order%22%3A%2222%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21USD%2122.78%2122.58%21%21%21163.06%21161.63%21%402103247017482193262507128e0406%2112000045793824516%21sea%21US%210%21ABX&curPageLogUid=lBnWlVI7vEPG&utparam-url=scene%3Asearch%7Cquery_from%3A

1)-I have been following the forum for a long time like when i was bougt my bike i learned something im scammed from chinese local seller on aliexpress i just bought 100cc but tehere is no 100 on the market. But i have some infos my piston is 49.5 mm and cylinder is one piece, meaning there is no cylinder head.

2-) yes i have , is it good its name sg277.

3-) You posted the link carburetor and my posted what is the difference between
And how can i found plastic manifold connector pipe.

4-)Do I need to change the jets?.

Thanks for helping me Jhonny <3

 

[Gordy]

1)-I have been following the forum for a long time like when i was bougt my bike i learned something im scammed from chinese local seller on aliexpress i just bought 100cc but tehere is no 100 on the market. But i have some infos my piston is 49.5 mm and cylinder is one piece, meaning there is no cylinder head.

2-) yes i have , is it good its name sg277.

3-) You posted the link carburetor and my posted what is the difference between
And how can i found plastic manifold connector pipe.

4-)Do I need to change the jets?.

Thanks for helping me Jhonny <3

That engine is gonna be around 75cc. Never heard of the engine, but it's probably as good as any. The carb Johnny posted is smaller. Big carbs are too much for these engines. You'll probably have to make a manifold or find a booted carb. Amd yes, a rejet is necessary with almost any carb swap.

 

[sunsetpolo]

That engine is gonna be around 75cc. Never heard of the engine, but it's probably as good as any. The carb Johnny posted is smaller. Big carbs are too much for these engines. You'll probably have to make a manifold or find a booted carb. Amd yes, a rejet is necessary with almost any carb swap.

Crank arm length was 190mm if I remember correctly I cant make manifold there is no aluminum welding. What is booted carb

 

[Gordy]

Crank arm length was 190mm if I remember correctly I cant make manifold there is no aluminum welding. What is booted carb

A booted carb connects with a rubber hose. And you can make an intake manifold out of steel. Do you happen to know the stroke?

 

[sunsetpolo]

Çizmeli bir karbüratör kauçuk bir hortumla bağlanır. Ve çelikten bir emme manifoldu yapabilirsiniz. Stroku biliyor musunuz?

A booted carb connects with a rubber hose. And you can make an intake manifold out of steel. Do you happen to know the stroke?

I mixed the crank and stroke, my stroke is 190mm yes i can make steel good idea

 

[Gordy]

Çizmeli bir karbüratör kauçuk bir hortumla bağlanır. Ve çelikten bir emme manifoldu yapabilirsiniz. Stroku biliyor musunuz?

I mixed the crank and stroke, my stroke is 190mm yes i can make steel good idea

Stroke should be 38 to 40mm

 

[sunsetpolo]

Stroke should be 38 to 40mm

İ dont know

 

[Johnny_]

3-) You posted the link carburetor and my posted what is the difference between

The one I posted is smaller, and the tube where it connects is the same size as the reed valve.

And how can i found plastic manifold connector pipe.

I'm honestly not sure.