getting a 2006 apex mtn with bad rod bearing,piston,valve need help!!!

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acforlife

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Dec 24, 2010

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• Nov 19, 2011

• #1

hello all, im in the process of getting a 2006 yamaha apex mtn. the guy says it needs a new rod bearing,piston,and that one cylinders valves done. im looking to fix it my self but not exactly sure how as ive never tore into a 4 poke. i was told that the rod bearing isnt like a 2 stroke it is just 2 sleves and are easy to replace,but im not sure so i need some help. im also wondering what kind of prices im looking at if i do it my self.

 

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Duke

Well-known member

Jan 16, 2005

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• Nov 19, 2011

• #2

acforlife said:

hello all, im in the process of getting a 2006 yamaha apex mtn. the guy says it needs a new rod bearing,piston,and that one cylinders valves done. im looking to fix it my self but not exactly sure how as ive never tore into a 4 poke. i was told that the rod bearing isnt like a 2 stroke it is just 2 sleves and are easy to replace,but im not sure so i need some help. im also wondering what kind of prices im looking at if i do it my self.

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IMO, if you got that much wrong with it, I wouldn't waste my time or money. Pm Laneo and buy a good used, stock (unboosted) running motor and save the headache. Sounds like it needs a new crank, bearings, piston(s), head, block, etc, etc. Some guys resleeve the blocks, but I'm not a big fan of it.....

I've got 3 broken motors I bought for parts, every one has a f$%&ed block. If the motor was abused or detonated, chances are the cylinders are "out of round" anyway. Nice to start with a clean used stocker. My $0.02 :face-icon-small-win

Was it boosted?

 

A

acforlife

Free Member

Dec 24, 2010

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• Nov 19, 2011

• #3

well im actually tradeing it for my 03 yz250. he took it to a dealer and the dealer said that crank was good,block was good,everything but that one set of valves,piston,rod bearing. the motor wasnt boosted and the dealer thought that the bearing was defective. thanks

 

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acforlife

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Dec 24, 2010

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• Nov 19, 2011

• #4

ill pm him. do you have any idea on what kind of prices hes asking?

 

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Duke

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Jan 16, 2005

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• Nov 19, 2011

• #5

acforlife said:

well im actually tradeing it for my 03 yz250. he took it to a dealer and the dealer said that crank was good,block was good,everything but that one set of valves,piston,rod bearing. the motor wasnt boosted and the dealer thought that the bearing was defective. thanks

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Hmmm, id want to see it too believe it. Depending on price, not sure its worth all the headache of dismantling and rebuilding. Your probably looking 2-3K for a good used motor. I think you could find a good used Apex, States side for probably 4K. Really is a buyers market right now...

 

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acforlife

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Dec 24, 2010

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• Nov 19, 2011

• #6

ya it is if you have money lol i think i could trade my other bike for a motor lol. the apex has something called kmod skid or something like that he said it was spendy also has the avid drivers and new track

 

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paulharris

Well-known member

Dec 12, 2007

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Colorado

• Nov 19, 2011

• #7

if its just a rod bearing, piston and a valve why didnt the dealer just fix it for the guy? sounds fishy. Rarely will a rod bearing spin and not wreck the crank too especially if it lost oil pressure. if you do get it make sure its really cheap. the parts for these engines will empty your wallet quick. you can buy good running nice apex's for 4 grand or less.

also, these engines are very complicated. nothing like a 2 stroke if thats what you are used to working on. Make sure you have a genuine yamaha service manual, a lot of time and patience, and good tools if you take on the project.

 

Last edited: Nov 19, 2011

A

acforlife

Free Member

Dec 24, 2010

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• Nov 19, 2011

• #8

the guy said he didnt have the money because he just put a impulse turbo on his nytro
im trading it for my 2003 yz250

 

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philsummers21

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Nov 27, 2007

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Big Horns, Wyoming

• Nov 20, 2011

• #9

Yeah honestly it might be best to look into it buying a used motor. Can actually pick one up for 1600-2000. Can always sell the one in that apex to help cover half the cost. By the time you buy all the parts to fix that one or have it fixed you'll be half way to a used engine anyway

 

sledfvr

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Apr 7, 2008

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NW MT

• Nov 20, 2011

• #10

I'd buy a good used motor. They can be a mess just from a rod bearing going out and getting in the rest of the motor.