SuzukiSavage.com - Crank bearing replacement & a few other questi

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Crank bearing replacement & a few other questi (Read 8 times)

SlushPuppy

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Crank bearing replacement & a few other questi
Today at 03:36:34

Hello! After owning an older savage for awhile now, and way too many hours of research. I stumbled across a comment on an old unrelated forum of someone confidently attributing the notorious tensioner/chain issue to the fly wheel side main bearing, causing crank to slightly lift and loosen chain while still in spec and even cause piston to run out of line. Having the obsessive struggle I do, I now have L & R side old stock oem crank bearings lol. My first question is just if anyone has heard this or gone down this route before ? Logically it makes sense to me but you never know. Secondly, if in theory the piston has been running slightly out of line, would only correcting the bearings straighten it and disrupt its slight deviancy causing possible seal issues ? And 3rd, does the crankcase use any sort of premade gasket or is it just rtv sealed ? If you took the time to read this, thanks! I know its a mouthful.

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Dave

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Re: Crank bearing replacement & a few other qu
Reply #1 - Today at 04:15:46

The crank bearings are very durable and failure is not common.

I seriously doubt the crank bearings have any affect on the length and durability of the cam chain. If the crank bearings get loose or sloppy, there will be a very loud banging noise every time the piston goes up and down!

For years the loose cam chain was blamed on the chain stretching - one of our forum members named "DragBikeMike" has pretty much debunked that possibility with his very thorough modification and testing on his bike. The real cause of the cam chain movement and tensioner failure is the rear cam chain guide loses its' curve over time.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1593671973/0

His cure is to install a "Jack Bolt" in the cylinder that allows adjustment of the curve in the cam chain guide without taking anything apart. This modification is beyond the ability of most of us "mortals" - but it is a good fix. (I will post a link here as soon as I find it).

NOTE: Care and feeding of the Suzuki Savage is well documented on this forum - there are several old and gray haired people who are very knowledgeable on this forum and they are very helpful. I have seen lots of other places where the folks offering to help you work on your Savage have little or no mechanical experience - and they often give bad (or wrong) advice.

Someday I will be old......But not today!

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