| Re: Valve Stem Seal replacement [message #498623] |
Tue, 01 November 2005 15:34 |
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Nomen Nescio <nobody [at] dizum.com> wrote in
news:75ef97d7cf3bc4964d1fa82d22ce5965 [at] dizum.com:
> A couple of things. Its mandatory for anybody who owns a motorbike to
> be a motorbike mechanic. That is my secret for two wheel motoring. As
> for your valve stem oil seals, some bikes don't even have them. For
> those engines, I recommend installing a universal seal, otherwise your
> bike will be a smoke belcher.
>
> You only need seals on intakes because no oil goes down the exhausts
> because there's no suction. Cars need oil seals more than bikes because
> cars flood their valve train with oil but bikes just gently drip oil.
>
> Forget about chemical overhauls. All those after market additives are
> gimmicks and totally ineffective. That includes STP, TCP, Mink Oil,
> Motor Medic, Bars Stop Leak, Axle Grease and Elastic Keepemfromfloppin.
>
> You need a genuine Yamaha shop manual. Study up on it and get yourself
> some scrap iron and pipe to fabricate all the special servicing tools
> called for. There is no puller or driver you can't fabricate from pipe
> and iron, with an occasional Craftsman tool ground down to fit.
>
> You will need a torch to free stuck parts driven on and remember every
> bike has a lot of press-fit parts. To install such parts, you heat the
> female, freeze the male and couple them while in that state, using a
> heavy sledge to drive them home.
>
>
you are getting desperate Nomen. sledge hammer? That is funny. We had
one heavy equment mechanic that was nickname Frank "Get a bigger hammer"
Mitchall. I will let you guess how he earned that nickname.
pierce
pierce
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| Re: Valve Stem Seal replacement and other potential vintage buys [message #498624 ] |
Tue, 01 November 2005 15:51 |
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Well, as the OP I suppose it should be an honor that the great numbnut Nomen
replied to my post and gave y'all such rich fodder for chat. I have decided
not to buy that particular bike because I don't want to spend more on
repairs than the bike costs, and I could see it coming. This business of
trying to buy an old bike is a real PITA.
Currently on the short list are a 1981 CB 900, a 1982GS850 and a 1985 V45
Sabre...we'll see how they work out.
The sellers of the CB and Sabre say it needs nothing, the GS seems to need a
coil pack ($155 from Old Bike Barn - if that's the only problem, which I
dunno yet).
Thanks for the good posts, guys.
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| Re: Valve Stem Seal replacement and other potential vintage buys [message #498625 ] |
Tue, 01 November 2005 16:33 |
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BobN wrote:
> Currently on the short list are a 1981 CB 900, a 1982GS850 and a 1985 V45
> Sabre...we'll see how they work out.
>
> The sellers of the CB and Sabre say it needs nothing, the GS seems to need a
> coil pack ($155 from Old Bike Barn - if that's the only problem, which I
> dunno yet).
Suzuki's GS-series had a lot of alternator stator and voltage regulator
problems, which we've discussed in great depth. Mechanically, the GS's
aren't bad motorbikes, it's just the *stupid* design of the wiring
harness.
It seems that the real culprit isn't the stator or the regulator at
all, it's the excessive number of electrical connections in the wiring
harness.
The stator and the regulator have different connectors, so the
engineers had to add a short pigtail to the wiring harness in order to
plug the stator and the voltage regulator into the bike to make the
mechanic's job easier when something went wrong. That's all electrical
connectors do, yannow. They make it possible for the mechanic to
replace stuff quickly and enhance their paycheck.
The extra connectors get hot and melt and the overheated electrical
connections prevent the voltage regulator from working to shunt part of
the charging current to ground. So the stator and the voltage regulator
eventually fry.
On some GS models, a wire runs all the way from the stator up to the
handlebars to attach to a headlight switch that no longer exists on
American models. There is a little jumper wire that sends the power
back to the voltage regulator.
When the little jumper wire starts melting, the charging current from
the stator gets reduced by half and the battery doesn't charge. I lost
track of how many batteries I bought for my GS-1100 before I figured
out what the heck was going on with the excessive number of electrical
connections.
I cut off the melted electrical connectors and soldered the wires
directly together.
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| Re: Valve Stem Seal replacement [message #498626 ] |
Tue, 01 November 2005 16:45 |
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R. Pierce Butler wrote:
> you are getting desperate Nomen. sledge hammer? That is funny. We had
> one heavy equment mechanic that was nickname Frank "Get a bigger hammer"
> Mitchall. I will let you guess how he earned that nickname.
I knew a guy whose favorite expression was "Bash it again, Harry!"
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