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dr350-digest        Thursday, November 4 1999        Volume 01 : Number 191




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Date: Wed, 03 Nov 1999 18:31:39 -0800
From: jessekientz <[e-mail]>
Subject: Re: (dr350) Q: piston ring

Hi Jurgen, I believe that the excessive wear on the rockerarms and cam was from a lack of
lubrication which causes quick wear to these parts resulting in the excessive clearances. I would
check inside the clutch cover where the oil pump gear is and make sure it is ok.  any more questions
please contact me. I would recommend getting a Suzuki shop manual to guide you, the factory one .

regards Jesse

Jⁿrgen Seeger wrote:

> Hi Jesse,
> thanks for your detailed advice. One question: don't you think it may be possible
> that the very high valve clearence, about three times than max. allowed, has
> caused the damages on the cam and the rocker arm?
>
> Jⁿrgen
>
> jessekientz schrieb:
>
> > Hi Jurgen,  The third ring is the oil ring and is made up of three pieces two thin steel and
> > one segmented section the thin ones are removed first and then the segmented one how ever you
> > should measure the piston and cylinder bore to determine the clearance it should be less than.
> > .120mm or.0047", The bore should be checked at the top middle and bottom at a front to back
> > and side to side location. If any location is more than 79.075mm or 3.113" the cylinder should
> > be bored to the next oversize. The cam Should be replaced and the rocker arms should be
> > hardface welded and reground or replaced with new. It sound s like it has been run without oil
> > or the oil pump has failed for some reason the clutch cover should be removed to check the oil
> > pump drive gear train.  If you have more questions please feel free to contact me.
> >
> > Regards  Jesse
> >
> > Jⁿrgen Seeger wrote:
> >
> > > I've had a closer look to my DR 350 SE, which I've bought four weeks ago
> > >
> > > with the hint of the seller "damage in the cylinder had, I think".
> > > Actually
> > > it was very noisy.
> > >
> > > One reason for the was a valve clearance of around 0,4mm, another was a
> > > damaged
> > > surface of the exhaust cam, the same with the rocking arm. Because I had
> > > open
> > > the motor already, I went further and had a look to the piston. Looks
> > > ok,
> > > but, and thats my question:
> > >
> > > The third piston ring is not easily moveable in his slot, and I can't
> > > see were
> > > this ring is open. The other rings are. Is this normal, or is this
> > > irregular?
> > >
> > > Jⁿrgen
> > >
> > > PS: please excuse my bad English regarding mechanical vocabulary, can't
> > > find my dictionary of Technical English ....
> > >
> > > Support Dual Sport News with your subscription http://www.geocities.com/~klrdsn/page2.html
> > > Visit the dr350 archives at http://www.listquest.com/lq/search.html?ln=350
> > > Unsubscribe by sending a message to [e-mail]
> > > Leave subject blank, message is unsubscribe dr350 (or dr350-digest).


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Date: Wed, 3 Nov 1999 21:41:13 -0700
From: "Tom Warr" <[e-mail]>
Subject: Re: (dr350) DR 350 SE 1999

I have a Corbin seat on my DRS 350 and really like it.  It fits on the bike
well, lowers the seat height about 2", and is comfortable enough for all day
rides.  Looks nice, good workmanship.  If you value comfort, it is worth the
money.

I just put a Bill Mayer saddle on my KTM - it is even more comfortable.  He
builds one on the stock seat pan, for about the same money.  Let me know if
you want more details.  TW




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Date: Thu, 4 Nov 1999 06:19:39 -0500 (EST)
From: [e-mail] (John)
Subject: (dr350) for sale or trade

Anyone interested in a stock airbox or exhuast?


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Date: Thu, 4 Nov 1999 12:49:08 EST
From: [e-mail]
Subject: (dr350) DR boingers..

When looking for Suzuki forks to swap on the DR...  will 125RM forks ...say
87,88,90? also fit??  Is there a database or list of what forks (size USD or
conventional, Showa or Kayaba) went on what year RM????

Thanks


Guy

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Date: Thu, 4 Nov 1999 21:38:19 -0500 (EST)
From: [e-mail] (John)
Subject: (dr350) Fwd: Re: plug check

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From: "Bryan Nolastname" <[e-mail]>
To: [e-mail]
Subject: Re: plug check
Date: Thu, 04 Nov 1999 11:43:10 PST
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Dude, it amazes me that your plug is still white.  Are we talkin the same
part of the plug?  I dont really remember what the insulator part of the
plug looked like when I tried the 147.5 (albeit w/ a larger pilot at same
time), but what I looked at was the amount of deposits on the END...you
know, where the two prongs come close to the post that runs thru the middle
of the plug (electrode), there was tons of powdery soot.  I wonder if you're
considering whats going on with the very end of the plug?....I think THAT is
what is important.  BTW, I'm no mechanic....not too sure of the validity of
my observations.  But I've gone by them for many years w/ many bikes, w/
good results.  Good luck-
Bryan
(ps-maybe you should post this whole correspondence to the DR list & maybe
Jesse, Norm, et al will have more worthwhile comments)

>Welp, I went up to the 147.5. Motor still pulls strong to redline with
>no poping or any hesitation from too much fuel. I checked the plug after
>kicking it's ass in for a while and the damn thing is still white!!!! No
>way I am still lean  right? I can't see how. This makes no sense. Also
>today was the coldest weather I've ridden the bike in and when the motor
>was still cold the clutch seemed to be slipping. Is this normal? It got
>better after the motor warmed up I use the Castrol 100% synthetic
>motorcycle oil. I just realized here you live I don't think you get much
>cold weather. Thanks
>
>

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End of dr350-digest V1 #191
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