Maintenance & Technical > KX450F / KX250F
KX450F vs. KX500
bigbellybob:
i have one of the most expensive 2t dirt bikes there is for parts KTM380. if a bomb went off in my motor and i needed everything cases, crank + bearings and rod, new cylinder, head, piston and gaskets. it would be under $2,200
Item # Description Your Price Quantity Subtotal
54730018500 CRANKSHAFT. BEAR STROKE 77 $830.54 $830.54
54730006100 CYLINDER HEAD $103.07 $103.07
54730005244 CYLINDER CPL.W.FLANGE 380'98 $456.00 $456.00
54730007200 II PISTON II CPL. 78,0MM 380'98 $106.99 $106.99
54630000944 ENGINE CASE CPL.W.TRAN.BEAR'98
original partnumber 54630000844
superceeded by 54630000944 $522.89 $522.89
Your Total $2,019.48
+ gaskets.
now put a bomb in a 4t and see how much bigger that list of parts gets.
lets say the 2t and 4t will need a fresh top end at 70 hours, with my expensive KTM its under $150 for piston kit and gaskets, if the cylinder is good
can someone tell me how much it will cost to freshen up a 4t if the cylinder is good?
don46:
This is totally out of hand, how often do 4t's blow up and need everything from cases up, not many that I've seen. Heads, yeah I've seen them crater, but again, most can be traced back to the maintenance or lack of. Knock on wood, I have not had 1 problem personally with any of my 4t's. These are not for everybody, but for those that race seriously, they are a must. I have both and like each for the application they are used, the other issues and it doesn't matter whether it's 2 or 4 stroke a person should learn how to repair them.
don46:
--- Quote from: bigbellybob on April 30, 2008, 08:41:15 AM ---i have one of the most expensive 2t dirt bikes there is for parts KTM380. if a bomb went off in my motor and i needed everything cases, crank + bearings and rod, new cylinder, head, piston and gaskets. it would be under $2,200
Item # Description Your Price Quantity Subtotal
54730018500 CRANKSHAFT. BEAR STROKE 77 $830.54 $830.54
54730006100 CYLINDER HEAD $103.07 $103.07
54730005244 CYLINDER CPL.W.FLANGE 380'98 $456.00 $456.00
54730007200 II PISTON II CPL. 78,0MM 380'98 $106.99 $106.99
54630000944 ENGINE CASE CPL.W.TRAN.BEAR'98
original partnumber 54630000844
superceeded by 54630000944 $522.89 $522.89
Your Total $2,019.48
+ gaskets.
now put a bomb in a 4t and see how much bigger that list of parts gets.
lets say the 2t and 4t will need a fresh top end at 70 hours, with my expensive KTM its under $150 for piston kit and gaskets, if the cylinder is good
can someone tell me how much it will cost to freshen up a 4t if the cylinder is good?
--- End quote ---
Your right you do have one of the most expensive brands of bike to repair.
Texas Champ.:
Not everyone is mechanicaly inclined....I've seen guys that are A class riders but can't use a pair of pliers. They are left to pay shop rate for repairs. A guy I race with in the vintage class rides a KX 450 in the +50 modern class also, he had 9 hrs. on his 450 and the crank broke. Good rider and is good about maintenance...Factorys have whittled away at iron and aluminum to the point where they won't last as long as a 2 stk. and all in the attempt to make us content with 4 stroke perfomance. Just look at the shirt-less pistons in a 4 stroke for instance, You could do it to a 2 stk. or a Chey 350 but the reliability goes out the window in lieu of performance....km
KXcam22 ; We are just grown men having a grown man debate here..Don't fear we mean no harm..we'er just stating facts and discussing observations made......km
don46:
The bottom line, and I think we will all agree the 4 stroke is more expensive to maintain, the only debate is how much it will cost and what is likely to break. The 06 KX's did have piston pin issues, kawi stood behind those.
Texas champ, I wpuld of contacted kawi if I was the guy you raced with, they have been very good about repairing failures.
big belly bob, I just put a piston in my 450, with gaskets it cost me less than $100, but we have a deal with Wiesco, retail prices are about $150 piston and another $35 for gaskets.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version