660 engine case - Yamaha Raptor Forum
 
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post #1 of 4 (permalink) Old 09-23-2006, 04:34 AM Thread Starter
 
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660 engine case

ok..went to glamis last weekend...and came down olds, went to make the turn and klack klack klack...loud noise....so i shut off, trailered back to camp, took it to trinity, they said the motors done, prolly top end...so i tear it apart...top end is fine...look into crank area....no bueno....took it back to trinity for them to put their .02 in again...and yep...case is done...

question is...does anyone know a place, other than ebay, i can get either a case or a total bottom end (crank and trans)?

thanks,
mike
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post #2 of 4 (permalink) Old 09-24-2006, 11:23 PM
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Re: 660 engine case

Places to check:
Every atv forum that allows the mention of a raptor
Online and local classified ads for blown up rap w/ good bottom end
The engine builders, Kenz Craycraft, Trinity, etc.
Local/out of town atv junkyards

Mike

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post #3 of 4 (permalink) Old 10-02-2006, 03:32 AM Thread Starter
 
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Re: 660 engine case

ok...heres the unfortunate damage report....
new (but used): cases (l&r), new oil and water pump gears (apparently theyre plastic), and clutch cover new clutch (supposedly hd dirt racer clutch) gaskets, a hone and 11:1 wiseco, with a hotcam stage 1 bump stick....

im in it for just over a grand...but the bottom end is supposedly done and ready to pick up, gonna go in there tuesday (closed sunday and munday -> ) then put it in, put the cylinder and head, then wait for the cam to get here (ordered off ebay store back east, saved a decent amount of $$$)

then probably try and get it dyno tuned...so that its done right (i tuned it a lil on the rich side last time) plus im curious on what itll put out as the clutch was noticably slipping prior to the "incident"

so what do you guys think it'll put out it is gonna have the stuff mentioned above, with a full sparks pipe, and fully exposed k&n's (literal airbox elimination)
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post #4 of 4 (permalink) Old 10-02-2006, 10:09 AM
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Re: 660 engine case

The clutch is probably EBC, they call them dirt racer clutches. Nothing too extravagent just a decent oem replacement.

Probably looking right around 50hp or a little more with that setup and a lot of good torque to go with it.

Mike

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