440 kits...

[motox92]

Im thinking about buying one for my 400ex, I am just wondering does that decrease reliablity? http://cgi.ebay.com/ebaymotors/Honda-400EX-12-5-1-440-Big-Bore-kit-w-stage-2-hotcam_W0QQcmdZViewItemQQ_trkparmsZ66Q3a2Q7c65Q3a1 0Q7c39Q3a1Q7c240Q3a1318QQ_trksidZp3286Q2ec0Q2em14Q QhashZitem300290025475QQitemZ300290025475QQptZMoto rsQ5fATVQ5fPartsQ5fAccessories

Does this ad more power? will you be able to tell..

[86 Quad R]

Originally posted by motox92
Im thinking about buying one for my 400ex, I am just wondering does that decrease reliablity? http://cgi.ebay.com/ebaymotors/Honda-400EX-12-5-1-440-Big-Bore-kit-w-stage-2-hotcam_W0QQcmdZViewItemQQ_trkparmsZ66Q3a2Q7c65Q3a1 0Q7c39Q3a1Q7c240Q3a1318QQ_trksidZp3286Q2ec0Q2em14Q QhashZitem300290025475QQitemZ300290025475QQptZMoto rsQ5fATVQ5fPartsQ5fAccessories

Does this ad more power? will you be able to tell..

to really get full benefit of a big bore you'll want to add an exhaust, switch to a 450r carb, add a piston with a bit more compression and most importantly get the head ported and depending on your type riding you'll want to add air scoops.

[motox92]

How much is that going to run me? I really need to keep stock exhaust where I ride in Mass its a must. I wouldnt mind doing that other stuff though

[86 Quad R]

it adds up. no doubt about that. kinda redundant not to add the exhaust. i mean it'll run ok but will build up heat faster due to it being too restrictive for the larger bore ect ect.

if your simply wanting to get a bit more power from a stocker you could do lil minor stuff now like an axhaust, open lid box, maybe a lil cam and even a 450R carb until later but in all honesty...... i'd do a 416. its much less of a headache. imo

[rob_990]

yea do the 416.that way when its time for a rebuild again you can go to a 426 then eventually a 440.id also recommend a crf 450 timimng chain and a hot cam stage 2 and an exhaust. that will make a huge difference.it would be sorta pointless to do these mods if the exhaust is going to be restricted. i recommend getting a quite core so its not too loud or the new lexx slip on.


also with a 440 it wont be as reliable and youll have to get new studs/vales to make it kind of reliable.