OP
UTC

Member
2001 Vespa ET2
Joined: UTC
Posts: 16
Location: Phoenix, AZ
 
Member
2001 Vespa ET2
Joined: UTC
Posts: 16
Location: Phoenix, AZ
UTC quote
I went through the Fabio thread and ended up with this:

7.7g rollers (average)
98 main jet
70cc kit
17.5 carb
Leo Vince touring exhaust
tighter clutch springs
Malossi variator

It seems a bit sluggish to me and it takes me a bit to hit 40mph. Almost feels that I'm at WOT when I'm only around 3/4 throttle. I don't really hear any difference in the rev's after 3/4. Any suggestions?
need more mirrors :)
need more mirrors :)
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Hooked
Joined: UTC
Posts: 434
 
Hooked
@oscarsass avatar
Joined: UTC
Posts: 434
UTC quote
Japatito wrote:
I went through the Fabio thread and ended up with this:

7.7g rollers (average)
98 main jet
70cc kit
17.5 carb
Leo Vince touring exhaust
tighter clutch springs
Malossi variator

It seems a bit sluggish to me and it takes me a bit to hit 40mph. Almost feels that I'm at WOT when I'm only around 3/4 throttle. I don't really hear any difference in the rev's after 3/4. Any suggestions?
Roller weights will depend on the year of your bike. Later ones used lighter rollers from the outset AFAIK... but you have a Malossi variator, so that throws my knowledge off a bit - not sure what their 'factory equivalent' weight would be.

I went from 6.4g factory, to 5.7g (in a standard variator). 2001 bike.

If you have a cast iron 70cc kit (and standard airbox), I'd say that a 98 main jet is way too high for use with a 17.5 carb and leo vince touring exhaust. Try working your way down to 78 instead.

Mine runs fine with a mid-70s jet, combined with the 70cc cast iron kit and single layer malossi filter (in a standard airbox), and a Tecnigas Silent Pro exhaust (which isn't too dissimilar to the Leo V Touring exhaust?).

Also check your torque driver moves smoothly, and that your belt is within spec.

👍
OP
UTC

Member
2001 Vespa ET2
Joined: UTC
Posts: 16
Location: Phoenix, AZ
 
Member
2001 Vespa ET2
Joined: UTC
Posts: 16
Location: Phoenix, AZ
UTC quote
Thank you so much. Gonna try these adjustments and see where it takes me
@outsider avatar
UTC

Hooked
ET 50 GTI250ie Sprint 150
Joined: UTC
Posts: 334
Location: Royal Oak MI
 
Hooked
@outsider avatar
ET 50 GTI250ie Sprint 150
Joined: UTC
Posts: 334
Location: Royal Oak MI
UTC quote
You should have just left it alone I have stock ET2 with exhaust that will hit 48MPH.

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