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Krannie McKranface

.....dang.....

26 posts in this topic

Well, the internal noises from my 2008 WR450F are getting to the point that I am afraid that something will come flying through the cases soon.

 

I am going to have Paul as ASRacing tear down the entire motor, and mic and inspect everything.

 

Most likely I will be replacing the crank and some bearings, and a top end, if it is time.

 

 

Pics to follow.

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That doesn't sound good (pun intended). Hope it's nothing too serious (meaning expen$ive).

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I tried to record the noises, but there is too much auto-compression and level adjustment on a phone or camera to make it a useable recording

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I'm okay on the sound clip... It would not do me any good unless I watch it on the IMAX sound system :) for example....

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i wish I could hear some of these noises most people hear... And it sucks to have a yami in the ER... :(

I bet you could "hear" abnormal noises by feel and your other senses just as well as others can hear them with their ears. Kind of like the premise behind "Blind Fury."
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I bet you could "hear" abnormal noises by feel and your other senses just as well as others can hear them with their ears. Kind of like the premise behind "Blind Fury."

Spot on!

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Yup. Feel is the first thing for me.

I can 'feel' the crank grinding away through my feet and ankles, and the clutch throw-out in my balls. 

It's like riding one of those reclining massage chairs at the car wash.

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Yup. Feel is the first thing for me.

I can 'feel' the crank grinding away through my feet and ankles, and the clutch throw-out in my balls.

It's like riding one of those reclining massage chairs at the car wash.

You should put a coin-op mechanism on the side of that thing and chain it down outside the front door of your local Vons. Retirement plan - check.
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Yup. Feel is the first thing for me.

I can 'feel' the crank grinding away through my feet and ankles, and the clutch throw-out in my balls.

It's like riding one of those reclining massage chairs at the car wash.

Whatever became of the debris you found in your oil filter ?

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Whatever became of the debris you found in your oil filter ?

 

 

Um, the debris went in the trash

 

Seriously, most particles were ferrous metal, as were the mushroom of debris found on the magnetic drain plug.

Since Yamaha does not use the Bronzing process on their cranks, you don't get the tell-tale 'gold-dust' when the crank bushing starts to go, (like with Honda ) so it's pretty tought to know exactly where the debris comes from......but the 'clunk-clunk' from the general direction of the crank kind of gives it away....

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....IT MIGHT be cheaper to buy a whole used low-hour '08 and transfer over the 'good' parts..... cause then everything, not just a dozen motor parts....would be 'fresh'. 

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Um, the debris went in the trash

Seriously, most particles were ferrous metal, as were the mushroom of debris found on the magnetic drain plug.

Since Yamaha does not use the Bronzing process on their cranks, you don't get the tell-tale 'gold-dust' when the crank bushing starts to go, (like with Honda ) so it's pretty tought to know exactly where the debris comes from......but the 'clunk-clunk' from the general direction of the crank kind of gives it away....

So the crank went out in your engine ? Are you rebuilding it stock or ?

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What I expect to replace

 

Crank set

Piston set

...at least (4) trans shaft bearings

Shift drum

(1) shift fork

Clutch pack

Clutch cable

Clutch perch (ASV)

 

What I will also replace

 

DHR triple clamps (too stiff), back to stock (ebay)

Billet wheels and black Excels (too black/over kill strength), back to stock (ebay)

GPR damper (too crappy), change to Scotts and BRP

Bars, back to CR High 

IMS tank; replace leaky one with non-leaky used one (ebay)

 

What I will achieve:

 

Same bike, less problems, less 'clunky-thuddy' sounding motor, better throttle response (crank is dragging BADly), less stiff ride up front, better clutch feel and pull,  Shiny-shiny lighter wheels, no more 'ohshit' moments eliminating the GRP damper

 

Cost: $2k-sih.

 

Why put $2k in a old bike? Why not buy an FI?  Cause they are too small for me.

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What I expect to replace

Crank set

Piston set

...at least (4) trans shaft bearings

Shift drum

(1) shift fork

Clutch pack

Clutch cable

Clutch perch (ASV)

What I will also replace

DHR triple clamps (too stiff), back to stock (ebay)

Billet wheels and black Excels (too black/over kill strength), back to stock (ebay)

GPR damper (too crappy), change to Scotts and BRP

Bars, back to CR High

IMS tank; replace leaky one with non-leaky used one (ebay)

What I will achieve:

Same bike, less problems, less 'clunky-thuddy' sounding motor, better throttle response (crank is dragging BADly), less stiff ride up front, better clutch feel and pull, Shiny-shiny lighter wheels, no more 'ohshit' moments eliminating the GRP damper

Cost: $2k-sih.

Why put $2k in a old bike? Why not buy an FI? Cause they are too small for me.

Bill, PM sent on the rims.

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