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Discussion Starter · #1 ·
how are they? I like to ride mx/racing and some mess around stuff. is this good for that stuff or should i get a nonpv. and the powervalve i heard there more like a 4-stroke longer gear type of setup. well do they still have good powerband. does anybody have a video running a 310 pv. help? haha thanks everyone
 

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how are they? I like to ride mx/racing and some mess around stuff. is this good for that stuff or should i get a nonpv. and the powervalve i heard there more like a 4-stroke longer gear type of setup. well do they still have good powerband. does anybody have a video running a 310 pv. help? haha thanks everyone
I've personally never ridden one, but I'm pretty sure that is going to be my next upgrade. The PV is primarily for the type of riding that you do. The idea behind the PV is that it broadens the power band, and smoothens out the classic 2 stroke hit. This allows for less wheel spin, which means greater traction and more power to the ground, especially at lower RPM's.

Also, with a 310 kit you haven't gotten completely into big bore territory. What I mean by that is, you won't have to machine your cases, use a high flow/volume big bore exhaust, upgrade your tranny gears, upgrade your clutch, etc, etc. It is always a good idea to do those types of things when deciding to run a big bore of any kind, but with the 310 you can get away with the stock components, at least for a while.
 

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I have had minei for about 4 years ...love it !..
why do you want a video ?....I have a few &
my avator has me riding mine .. :)
 

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Discussion Starter · #5 ·
i wanted a video so i could hear how it sounds powerband wise. so i can see how much of a dif. it is
 

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ok well this was before it was ported .. & the quality is rough ,& its from a few years ago .. ..lets see if it works OK

View My Video
 

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Discussion Starter · #11 ·
im just gonna go with the 310 pv. b/c i like the more 4 strokey feel over 2 stroke. just has the power when u need it
 

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...... In what application is more torque not good?
when the aftermarket crank breaks !!! :p
 

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I would rather have a 4 mil stroke 69 mm bore stock jug 285 cc. Set up right will take a 310 everytime and are cheaper to build. These are a fun little motor.

that will be a good runnin engine for sure but i'd only do it using a big bre sleeve thats used for the 295/310.
 

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no I dont ..
I love my quick revving OEM short rod crank ;)
 

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You should associate stroker with torque. In what application is more torque not good?
i agree about the torque... just read alot of other posts on other sites and had builders say the same thing about working better for drag machines.. But i could've miss interepreted them reffering to reliability???
 

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Can anyone with a 310 PV speak up on how much vibration you get with this setup? That was one issue I ran into once I started to build up my 4-stroke, it vibrated pretty bad.
 

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hmmm vibration is an open subject in some ways ..
vibrations can come many different things ..related ..
poorly installed motor motor mounts (or lack of :rolleyes: ) & torque settings /looseness)
bad counterbalancer, sloppy internal parts /bad bearings/worn moving parts
just to name a few ....
my motor was rebuilt from every aspect including brand new OEM crank & many new peices throughout ,...so mine was smooth & tight feeling & didnt vibrate :) anymore than any other well built & properly installed motor in a good frame ;)
 
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