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crazyatvn
11-18-2004, 08:13 PM
What is the differance between a 416-426 (not just cc)? Is a 426 still a stock cylinder? Is a 426 worth the extra 10cc? Finally can you bore a 426 again or is it your last bore? Thanks in advance for the help I am trying to decide what to do.
Steve-o 400EX
11-18-2004, 08:20 PM
The 426 is the max you can bore your stock sleeve. It will have a little more bottom end than the 426 but will run much hotter. I recommend the 416 because if it ever goes you can bore it again without changing the sleeve.
skippy
11-19-2004, 09:39 AM
yea i leavened the hard way bored my fromstock to 426 5 races sleeve shattered
torqen2k1
11-19-2004, 10:39 AM
Originally posted by skippy
yea i leavened the hard way bored my fromstock to 426 5 races sleeve shattered

Wow that sucks! Did you have anything as of a bigger oil cooler or air scoops and also did you have your quad jetted properly?
Mikey
11-19-2004, 11:07 AM
What if you get an LA sleeve and bore it to 426... still run hot?
ReconRider25
11-19-2004, 06:17 PM
running a 440 sleeve for a 426 will be much better then using the stock sleeve. it wont break as easy and should run cooler. i suggest getting atleast airscoops though.
torqen2k1
11-19-2004, 06:22 PM
Originally posted by ReconRider25
running a 440 sleeve for a 426 will be much better then using the stock sleeve. it wont break as easy and should run cooler. i suggest getting atleast airscoops though.

How are you gona put a smaller piston in a bigger cylinder? You will have mad blow by and piston slap. Put a 426 piston in a 440 cylinder. Not gona work
QuadJunkies
11-19-2004, 07:25 PM
I have had my 426 for almost a year now ,other than a Cam issue(seems it was a Cam defect ) mine has been great!!! I am getting to where I need to put in another piston after this series is over I plan on doing that .:) Get a set if Tineer scoops and you will be fine ;)
crazyatvn
11-19-2004, 09:48 PM
I al ready have air scoops and an over size oil tank. I am sure this will help alot. I think I like the sound of a 416 better one more bore is not a bad thing. Althought I might might not have it in a year or two anyway. ELECTRIC START 450R? Maybe if it ever happens.
sleeveslave
11-19-2004, 11:56 PM
Originally posted by torqen2k1
How are you gona put a smaller piston in a bigger cylinder? You will have mad blow by and piston slap. Put a 426 piston in a 440 cylinder. Not gona work

It is easy to do provided the "440" sleeve starts at 88mm.. and most manufacturers build for 88mm instead of 89mm nowadays.