Hey is a 440 Big Bore Kit worth the money? And about how much more seed will it add?
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t ( ' _ ' t)
Hey is a 440 Big Bore Kit worth the money? And about how much more seed will it add?
400ex(2001)
E White Pipe
Nerf Bars
t( ' _ ' t)
Run what you brung
it wont add more speed... you will just get there quicker...
unless you change your gearing or tire size.
from reading around here ive heard that 426 or 416 would even be a better choice.
02' Silver 440ex
Full P&P, Edelbrock Doug Eichner 440 carb, Motoworks SR4, Hotcams, Wiseco 11:1, Hotrods...
R.I.P
next winter i want to do a bore on mine but i realy want to be safe and get 416 but how much more of problems is the 426
Honda 400ex
Herrmann, Galfer, LRD, Moose, PRM, Houser, Durablue, Emgo, Nacs, Dyno Jet, K&N, Spider, Holeshot, EBC, DG.....
98% of the teenage population does, will try or has tried smoking pot. If you're one of the 98% who has tried it, copy & paste this into your signature.
450ER with a kicker
Both 426 and 416 are more reliable than 440 if done right. I hear 440 have lots of problems
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2004 400ex:
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Senior Member
426 ( .120 over bore, I think ) is just one more bore than 416 ( .80 over bore, I think), only problem if you wear out the 426 is that is the last bore on your stock sleeve
Junior Member
is borin it out real hard on the engine, i heard it was, but i see most everyone has theres bored out, what would u recommend most 426??
Senior Member
I bought my EX and it was already a 426, I have ran it for 2 years now ( GNCC racing and Mid-South hare scrambles ) and not had any problems yet and am very pleased with the performance. As long as you maintain your quad regurlarly I would go for the 426 !
Registered User
I would do a 440 over a 426 or 416. But thats just me.
Just the big bore alone is not going to do a whole lot.
Senior Member
I will put any 426 with a cam, port and polish, and pipe, airfilter, rev box beside a 440 with exact same setup and win 99% of the time.
Registered User
You might win all the long drag races, but the 440 will pull harder out of every corner. And over the coarse of the race it adds up.
My tc426 pulls a little harder on top then my 440's did but the 440 had a lot more bottom with less compression.
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