how much more power do you get if you stroke it?

 

this is very true and ecspecially when it comes to 2 strokes. a 2 strokes tuning window is much smaller than a 4 strokes and they can be very picky so opinions on setups usually arent valued.

 

If your thinking about a 440 that requires a new sleeve, why not go to a 465?

 

Hey Ive got a question for you big bore owners. Since there are other models out there that make close to 40 horse stock is it really worth it spend all that time and money on a 400ex to try and get that kind of power out of it. How much does it actually cost for everything (carb ,valves,cams, pistons,sleeves,exhaust,spring kits,port work,timing mods,) Are there any dyno numbers and hows the reliability. My brother just picked up a 400ex and is questioning if it will be worth it spend money on it or to buy something else. Back in the 90s I spent many thousands on a 300ex to get it to perform like a 250r and did it with a 406 stroker engine but it is slow compared to the 2000 and newer quads like raptors cannondales ,and the yz450. What do you think Yay or nay.

 

Beacuse i don't what to run race gas.

 

This is a good question. My answer is no. The Baja has way more potential than the EX. If I were to spend the money as I did on the EX I could have had a 70+ hp Bom or a 90hp Banshee. The question is as it was for me at the time I decided to do the big bore EX (which is paid off) was could I afford a new Raptor or DS and then throw hp $$$$'s at it. My answer is no.....thus the 465 was born. If your dead set on getting hp out of a EX, my opinion is do a 465 over a 440. The price is not that much more and the hp potential is higher with the larger displacement.

I've always kinda liked being the underdog when it came to dragging.....my HPD Pol smoked many of cocky Banshee's and it's just as much fun whipping up on a fair share of Raptors, Predators, Z's, Cannons and DS's with the stock looking EX.

JMiller

 

see who ever's quote that was.

I thought about buying a different quad, but the thing is i like to make people think that they are going to smoke me, and then waste them, plus i don't want to get rid of it because it is a nice ride.

 

air- how much does porting make?

 

Porting will make much more of a difference than 16cc's more displacement.

 

so do you guys know the bore of the 465? the 415-16 stroked is a 440, so if i wasn't asleep in math class that makes for a difference of what 25? so do you see anything that looks the same here? 440 stroked- 25 for the stroke does that add up to 465? it would be better to buy a newer quad engine combo but hey if the rider fits the quad , it might be worth the price.