310PV or 330PV?

[Oldrrider]

ESR called today trying to sell me on the idea of a 330PV rathe than the 310 I have on order. They are waiting to get more 310 cylinders in. Should I wait for the 310 or go with the 330. I am looking for durability as well as more power. I will ride mainly dunes and like the low end and mid range power.

What do you experts think?

[250rpilot]

when i bought mine, it was either get the 330pv right away, or wait about a month for the 310pv. i went with the 330, and do not regret it one bit. if i were to do it again, it would be another 330.

[Eddiesanders250]

Definately go with the 330 pv. more power more fun.

[outlaw#9]

do it right the first time ...go with a 350 pv ! :eek2:

[Oldrrider]

350PV!!!!!! I never thought of that. I guess that is something to consider. Do you need a longer swingarm to keep the front end down?

Later

[pismoracer]

Id go with the 350! I have run 310s and they dont compaire with the power out of a 350 ! if your duning why do you need the low end power? your always on the gas in the sand anyways! id say go with a non powervalve 350, and spend the money on a LR crank and make it a 370!

[deathman53]

they still don't have 310 pv's. I called a month ago about them. Call Lrd, I got a 310pv from them a few days ago, and the guy said they had a bunch ready to be ported. They had a two week wait on 265 pv's. don't get a 330, it is hell on your counterbalancer.

[zedicus00]

actually esr doesnt like doing 310 anything. he said for the price performance ratio there is no reason to not get a 330. if not bigger.

[ESR350r]

Hey deathman,

will you elaborate more on the hell that a counterbalencer takes from a 330, I have an ESR 330 big bore that is stroked so it is at 350cc and if it is that bad on the counterbalancer what can you do to the counterbalancer to make it take the power? Thanks

[beerock]

Im actually building a 330 right now(its sitting right in back of me)
the 330 is right about where the reliability tends to fall off. after that, maintenence is higher(350and up). and the counter balancer gets beat up and needs the bearing changed on both sides more often.

[deathman53]

exactly beerock, I'm sure a 310 is hard on it too, but mine didn't last long after I got the 330 kit. I bought a new counterbalncer and put that in,it was near the point of busting. the 330 and 310 piston are about 20 grams difference and I'm told a 310(really a 295) revs alot faster than a 330, the other reason I got rid of the 330. The third reason why I got a 310 is because of the heat issue, my bike was running hot with the 330. A 295 (what they call a 310 kit), should run cooler.

[beerock]

Originally posted by deathman53
exactly beerock, I'm sure a 310 is hard on it too, but mine didn't last long after I got the 330 kit. I bought a new counterbalncer and put that in,it was near the point of busting. the 330 and 310 piston are about 20 grams difference and I'm told a 310(really a 295) revs alot faster than a 330, the other reason I got rid of the 330. The third reason why I got a 310 is because of the heat issue, my bike was running hot with the 330. A 295 (what they call a 310 kit), should run cooler.

well the way to colve the heat problem is to buy a cfm cooler, for starters, and when you get enough dough buy a aftermarket radiator, i like the afco, thats what i have and the motor rins much cooler and the aircraft fittings on it are trick.

[deathman53]

they don't sell aftermarket radaitors for a atc 250r do they???? Its funny with the stock ported top end it runs about 180, the 330 was running at 240.

[deathman53]

come to think about it, I forgot that when I tore the bike apart the carb-cylinder boot had a crack in it, that probably why it ran real hot.

[beerock]

i think the rads are the same nt sure on this

get a cfm cooler to start off

[deathman53]

I already took it off, and i had a pro-design cooler and a 20 fin cooler mounted behind the radiator. I think it was the intake boot that was the problem. The stock top end has no overheating problems.

[beerock]

Originally posted by deathman53
I already took it off, and i had a pro-design cooler and a 20 fin cooler mounted behind the radiator. I think it was the intake boot that was the problem. The stock top end has no overheating problems.

why would you take it off? keep it on, they make the motor run cooler, the cfm does at least by 10 degrees

[deathman53]

I'm talking about the 330 kit

[ESR350r]

so did you take the inline cooler off? if so do you still have it i may be interested in it. If not where is the best place to get one and what do they cost. my 330 right now has heat problems and i am looking for some ways to bring it down, i am gonna get the ESR trx 11 center mount pipe they said that will drop teh heat the same as an over sized radiator.

[deathman53]

no, I didn't take the inline cooler off,its staying on my bike. The guy I got mine from doesn't make them anymore, I was told that cfm makes 20 fin cooler, not sure though.

[ESR350r]

I heve heard that they are not worth putting on, do you have a temp gauge on yours that you can tell a difference between having one vs not having one?

[deathman53]

yeh, I have a tempurature guage too. I mounted it in a way that I can glance and see it while I'm rding. I don't really know if the cooler works or not. It a real tight fit between the radiators, short track relocation brackets(they move the radiator back), tanbk brackets, etc. So, I'm not gonna take it off to see how well it works. The tiny pro-design ones aren't worth putting on(you can see it in the pic I included along with how the temp. guage is mounted). I have the 20 fin cooler on the other side behind the radiator.

http://www.pictureposter.allbrand.nu/pictures/deathman53/250r+12-012.JPG.html

[beerock]

cfm still makes them and THEY DO make a difference, as previously stated AT least 10 degrees

most of your problems stem from the stock radiators

[joe1l]

most of your problems stem from the stock radiators
A stock radiator is fine to run with a big bore!!! I've been running my 350 for 2 years with a stock radiator....granted I don't run out in glamis, but I do use a good mix of water/water wetter and coolant. I have a temp gauge on mine to monitor the temp and never go above 200 unless its been idling for 10minutes!! A larger radiator doesn't hurt, but isn't completely necessary. A big bore pipe will also help keep the engine temps down as well. The larger size stinger helps keep the temps down. ;)

[beerock]

Originally posted by joe1l
A stock radiator is fine to run with a big bore!!! I've been running my 350 for 2 years with a stock radiator....granted I don't run out in glamis, but I do use a good mix of water/water wetter and coolant. I have a temp gauge on mine to monitor the temp and never go above 200 unless its been idling for 10minutes!! A larger radiator doesn't hurt, but isn't completely necessary. A big bore pipe will also help keep the engine temps down as well. The larger size stinger helps keep the temps down. ;)

dont take this the wrong way joe, but you dont really ride that thing hard enough to heat it up. if you did the stock rad would be the stem of your problems

[joe1l]

dont take this the wrong way joe, but you dont really ride that thing hard enough to heat it up. if you did the stock rad would be the stem of your problems

Macdizzy stated that the stock radiator is sufficient enough to cool a big bore. So i guess you know more than him now!
Bee, don't take this the wrong way, I ride it hard enough, and she don't overheat! Don't tell me what I do and don't do!

[beerock]

Originally posted by joe1l
Macdizzy stated that the stock radiator is sufficient enough to cool a big bore. So i guess you know more than him now!
Bee, don't take this the wrong way, I ride it hard enough, and she don't overheat! Don't tell me what I do and don't do!

ok:rolleyes: