Squish Clearence on 120cc

Does your Spree/Elite already run great, and you're trying to make it quicker/faster? Need a monster motor swap? Discuss your ideas here.

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Peteyparado
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Squish Clearence on 120cc

Post by Peteyparado »

Do u run the same squish Clearence on a 120cc as a 70cc? I've been told .8-.9mm is good
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
1man8scoots
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Re: Squish Clearence on 120cc

Post by 1man8scoots »

.9 isn't good but it's acceptable. .8 is better. .7 is optimal. Lately I've seen .55 and. 6 for some mina race kits which is insane.
Peteyparado
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Re: Squish Clearence on 120cc

Post by Peteyparado »

1man8scoots wrote:.9 isn't good but it's acceptable. .8 is better. .7 is optimal. Lately I've seen .55 and. 6 for some mina race kits which is insane.
Ok iman.the cylinder I'll be sending u in a couple days for port work. I'm running a 52.6 crank an the 54mm taida LC with a .1mm space gasket I was at .87 squish could I have just spray copper spray on block to get it to .8 ish? But when I get back from u it will be different again right because I will be going with a mild race port job.. ?
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
1man8scoots
CB900F
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Posts: 1485
Joined: Wed Mar 18, 2015 11:49 am
Location: usa

Re: Squish Clearence on 120cc

Post by 1man8scoots »

Your squish will remain the same. I would deck the cylinder a tiny bit. Taking off .1mm from the top
Peteyparado
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Re: Squish Clearence on 120cc

Post by Peteyparado »

Sounds good iman!! What about compression it was at 145psi with about 3good kicks as I kick more it gos up... What is an average kicks to get a good reading??? Because 145-150 is at the limit for these motor.. I think the high comp an me running the motor 2 sizes down on the main jet 132 to 130 cause the hole in my piston lol.... That's y I haven't sent the cylinder yet cause I'm waiting on the new one pose to be today praying...
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
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Wheelman-111
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Re: Squish Clearence on 120cc

Post by Wheelman-111 »

Greetings:

Compression is accurate when further kicking fails to cause the reading to rise. If it keeps going up, kick until it doesn't.
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"ISO": '03 Vespa ET4 Malossi187 74MPH
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Peteyparado
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Re: Squish Clearence on 120cc

Post by Peteyparado »

Wheelman-111 wrote:Greetings:

Compression is accurate when further kicking fails to cause the reading to rise. If it keeps going up, kick until it doesn't.
Ok when I did that it got to 155-160psi that's to high right? So I have to make my squish a little bigger or can I run safe at the comp?
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
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