120cc port timing questions
Moderator: Moderator
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- BMX
- Posts: 27
- Joined: Sun Sep 27, 2015 2:48 pm
- Location: Dearborn Michigan
120cc port timing questions
Hi i have a 120cc stroker af16 elite im putting togeatjer and have a question about port timing it has a 56.6 stroke crank and a 54mm bore from autotech on ebay...i was wondering at b0ttom dead center i got all the ports to clear the piston but the boost port its still slightly below the crown of the piston would this be ok? My pip and head gasket should be here in a few days so i can donthe solder test for thr squash but right now im trying to figure out the port timing thank you.
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- CB900F
- Posts: 1485
- Joined: Wed Mar 18, 2015 11:49 am
- Location: usa
Re: 120cc port timing questions
Send me a pic of how far it's sitting on the fb messenger terd machine
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- Spree
- Posts: 280
- Joined: Fri Feb 26, 2016 4:02 am
- Location: Hawaii
Re: 120cc port timing questions
I use to run that same bore with same size crank Just different brand.. But I raised the cylinder 1.80mm fully ported that motor ran 94mph.. That POP/prodigy bores are killer an last forever had mines just about 7 years on same crank an seals..
86 aero af16 swap. 121cc water cool.
Polini 30mm carb
Naraku mani
Scorpion stroker pipe
Stage6 CDI
5gram rollers
Keli high speed Variator
6.1 gears
94mph
Polini 30mm carb
Naraku mani
Scorpion stroker pipe
Stage6 CDI
5gram rollers
Keli high speed Variator
6.1 gears
94mph
Re: 120cc port timing questions
94mph?! Dude i'm surprised your seat is big enough for both you and your balls!!
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- Spree
- Posts: 280
- Joined: Fri Feb 26, 2016 4:02 am
- Location: Hawaii
Re: 120cc port timing questions
Was not me on scoot a friend.I'm * bricks at 87mph my max speed on my scoot
86 aero af16 swap. 121cc water cool.
Polini 30mm carb
Naraku mani
Scorpion stroker pipe
Stage6 CDI
5gram rollers
Keli high speed Variator
6.1 gears
94mph
Polini 30mm carb
Naraku mani
Scorpion stroker pipe
Stage6 CDI
5gram rollers
Keli high speed Variator
6.1 gears
94mph
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- BMX
- Posts: 27
- Joined: Sun Sep 27, 2015 2:48 pm
- Location: Dearborn Michigan
Re: 120cc port timing questions
So i got my pipe i got it spaced out and i still blow headgaskets its like ripping it when it blows