How much to build a 440 ex

[Acf7_400ex]

How much is it to build a 440ex and is it worth doing and are they reliable :muscle:

[123patrickquad]

about 500 over all and you wont be disapointed

[Bigun55]

Yep. I got mine back tonight i just rode it for about an hour but so far i LOVE it.

[xsr71x]

$200 crank & Rod
$177 Piston kit
$200 machine shop (welding crank and inserting sleeve)

New Bearings ???$

[QuadJunkies]

My 440 was alot more than 500 bones !!

:scary:

[400EX QUADER]

Hell the pipe and carb for mine was $800 alone!! + $150 for piston/gaskets, $110 for cam, $40 for cam chain, + labor!!:o guess $500 or less is just to half***** it, no offense...:ermm:

[123patrickquad]

when i sed that it means just for the 440 kit, resleeve, and bore. thats it

[123patrickquad]

im making mine a 440 now and ive spent about 500 give a little on it but im not dun yet. so tell me every thing needed to make it the right way, before i stick it all back to gether and it break in a week.

[johnkmpf]

don't forget to put in a stage 2 cam, its worth the money

[blakefoote]

Originally posted by johnkmpf
don't forget to put in a stage 2 cam, its worth the money

i agree....I have a 406 bore and Wiseco 11:1, hot cam stage 2, HMF full exhaust, no air box lid, and no choke....mine had a big difference in change of power....mine really gained alot!!!....so I can only imageine what that 440 will do for yah!...JMO

[K_Fulk]

Don't forget about a port job.

200 for crank and rod? A good rod is $220

[QuadJunkies]

to havea good kit you need all the above listed^^^^

I have around 2000.00 in my motor :uhoh: and thats before the pipe

u can buy a ims kit for $200

[underpowered]

cost depends on how far you want to go
wiseco piston kit=$140
Gaskets kit (Flessteel)=$28
Sleeve=$80
Install sleeve=$100
Bore=$50

Just for a basic kit, but you can go farther
Port job=$150-300
HD head studs=$60
Crank assembly=$300
Cam=$110-150
Exhaust=$400-800
HD cam chain=$40
Kibble white valves=$33 each $132 for all 4
+ labor if you aren't gonna do it yourself.

[underpowered]

Originally posted by xsr71x

$200 machine shop (welding crank and inserting sleeve)


no need to wled the crank, waste of money on a single cylinder bike. Welding the crank keep it true on multiple cylinder bike, but on a single cylinder, it does nothing.

[xsr71x]

Originally posted by underpowered
no need to wled the crank, waste of money on a single cylinder bike. Welding the crank keep it true on multiple cylinder bike, but on a single cylinder, it does nothing.

My crank twisted.. the welding would help prevent this in the future.

[400EX QUADER]

I wouldnt worry about doin the crank... mostly have to worry about it on banshees. very very slim chance you will have a crank problem. IMO

[xsr71x]

Originally posted by 400EX QUADER
I wouldnt worry about doin the crank... mostly have to worry about it on banshees. very very slim chance you will have a crank problem. IMO

$50 insurance;)

[underpowered]

Originally posted by xsr71x
My crank twisted.. the welding would help prevent this in the future.

not sayin it could not happen, but it is highly doubtful. Something else would have to go wrong to cause it to twist.

[DozerDan]

Im confused, I thought I read on one of the kits you need to bore out the walls?

Is that legit or do you just replace the sleeve altogether.

I have been thinking about doing this, I wasnt worried about boring them out as I work in a machine shop, but now I am confused>


For someone who was going to do all the work themselves, what would a good amount to set aside for the build up be.

No need for TOP of the line, but no junk either--- $500-800

If winter ever sets in I am gonna tear the whole bike down and take care of all the little things, might just have to add in one big one too

[underpowered]

for every 440 kit your actual cylinder must be bored to accept a larger sleeve, so yes you must bore the walls of the cylinder to make it a 440. as for prices, look at teh price list i posted earlier. that is just a rough guess, actuall cost is alittle lower at the shop i work at but i figured i would estimate high because different shops have different rates.