Question

Sun Aug 2 09:20:58 PDT 2026

Nope, no issues here, a little over 90 000 km on her.

Sounds to me like she's struggling to build oil pressure, so maybe check
out the oil pump?

/ Rickard

On Sun, 2 Aug 2026, 17:01 dominatr37, <dominatr37 at optonline.net> wrote:

> Has anyone had any main or conrod bearings go on their gpz's? I've got
> just under 74,000 on mine, and I'm running into a problem, that could be a
> bad bearing. When I start the bike up, the oil pressure light goes on. Then
> it goes out after it warms for a few seconds or minutes. At speed, it's
> fine. I changed the oil sensor, but then it (the light) started to come on
> between shifts. This really started last summer. I had changed the oil when
> it started, but I went to a 10w40 Amsoil instead of the 20W50 I normally
> used. I dumped that oil last night and filled it with 20W50 Amsoil again.
> The light is still flashing on when cold. I didn't ride it last night. I
> just put it away. I can't believe there's anything clogging the pick up
> screen. But that is my next step in my search. Anyone have any insight or
> comments to add? I just find it hard to believe a bearing is going bad. I'm
> not getting any knocking or strange sounds. It's running perfectly. Ralph L
> Angelo JrAuthor of Cool Stuff Http://tinyurl.com/ralphsamazon2
> -------- Original message --------From: dominatr37 <
> dominatr37 at optonline.net> Date: 10/17/25  8:14 PM  (GMT-05:00) To: GPZ
> List <gpzlist at lists.micapeak.com> Subject: Re: GPZList Digest, Vol 181,
> Issue 1 ((75k on my GPZ and climbing)) I'm right behind you, Charles. 73K
> on my GPZ. Ralph L Angelo JrAuthor of Cool Stuff
> Http://tinyurl.com/ralphsamazon2-------- Original message --------From:
> Charles Scappaticci <scapco at gmail.com> Date: 10/17/25  4:39 PM
> (GMT-05:00) To: Ralph <DOMINATR37 at optonline.net> Subject: Re: GPZList
> Digest, Vol 181, Issue 1 Hi Bill,I still have my GPZ, rode it to Daytona in
> March from Greensboro NC.  I can’t remember what chain I have sitting,
> waiting for my next chain as I’m in Daytona again but on my Pan America
> ST.I was lucky to get one of the last OEM front sprockets in for that next
> change, which hopefully will be a while.75k on my GPZ and climbing.Charles
> S.Sent from my iPhone> On Oct 17, 2025, at 3:00 PM,
> gpzlist-request at lists.micapeak.com wrote:> > Send GPZList mailing list
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> GPZList digest..."> > > Today's Topics:> >   1. Chain & sprockets (William
> K Denton)> > >
> ----------------------------------------------------------------------> >
> Message: 1> Date: Fri, 17 Oct 2025 14:47:34 -0400> From: William K Denton <
> wkdenton at verizon.net>> To: GPZ List <gpzlist at lists.micapeak.com>>
> Subject: Chain & sprockets> Message-ID: <
> 05379042-98DB-4E92-91AB-FC93FD044366 at verizon.net>> Content-Type:
> text/plain; charset=utf-8> > Hello list,> > I hope I’m not the only person
> left on this list that actually owns a GPZ 1100 in North America lol.> >
> So, I turned 40,000 miles a couple weeks ago and it’s time for new chain
> and sprockets and I’ve come up against a little situation that I’m sure you
> all already know the answer to.> > First, about the chain:> My chain is the
> original stock EK50UV – XX112L, manufactured by Enuma in Japan.> On the
> Enuma website, it says that EK50 chains are “generically equivalent to 520
> chains”, i.e. 5/8” pitch and 2/8” width between the inner plates. Well, I
> verified the 5/8” pitch value, but when I measured the chain width, it
> measures 3/8” between the inner plates, which would make it a 530 chain,
> not a generically equivalent 520 chain as Enuma’s website claims. Please
> explain. Also looking for experience based replacements for the OEM chain.>
> > Drive (front) 17T Sprocket:> This sprocket is NLA from momma Kaw, so I’m
> looking for generic equivalents for this item that are otherwise identical
> to the OEM piece.> > Driven (rear) 45 T Sprocket:> Although this sprocket
> is still available from momma Kaw, I’m thinking that there are other
> equivalent alternatives to the $119 OEM piece. Experience based suggestions
> encouraged and appreciated.> > That is all, and I appreciate any insight
> and recommendations based on your own experiences. I look forward eagerly
> to your replies.> > Best regards,> Bill Denton> Yardley, PA> 267-980-7788>
> WKDENTON at VERIZON.NET> Lazarus CycleWorks> We Breathe New Life into Old
> Bikes> > Sent from my iPhone> > > End of GPZList Digest, Vol 181, Issue 1>
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