Eric J. Geiger
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PRG Nocturne
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On May 11, 2013, at 12:28 PM, "Mike" wrote:
I replaced the chain not long ago, I just now retarded the cam chain timing by moving the chain by one tooth. It runs, but sounds kind of funny and it still backfires into the intake and out the carb.
Is it possible there is something wrong with one of my intake valves? I also cleaned and surfaced my valves when I rebuilt the engine. A few months ago, I rented a pressure gauge and I think I got something like 90 psi on each cylinder. I forget what the number was, I just know that it was exactly the same on each, which is what I was looking for.
I'll see if I can maybe get a couple decent pictures of my timing with my camera. I don't have a garage, so my car is outside.
--- In
anzhonda600owners@yahoogroups.com
, Mark P Hatten wrote:
> Mike Now, I'm actually not sure if the slipper guide is in there, I looked but couldn't see it. The prior owner says it is in there, it's just too deep and far down to see. My chain does not touch the cylinder or shave any aluminum. If you are backfiring at all you are a tooth off. The crank TDC pulley notch MUST be at the "T", it is possible you have the pulley on wrong giving a false reading. The cam sprocket line must be perfectly horizontal with the cam notch showing perfectly centered in the drivers side cam bearing. You can test a timing chain by rocking TDC. If you can move the crank from "T" to "F" with out moving the cam your chain or tensioner is bad. Mark
www.mphspecialties.com
> To:
anzhonda600owners@yahoogroups.com
> From: megamike78@...
> Date: Fri, 10 May 2013 18:05:08 +0000
> Subject: [anzhonda600owners] Re: Cam Chain guide - go without it?
> Mark,
> I watched your video of you hitting over 7000 rpm. Was that done without the slipper/guide? That's pretty impressive.
> If you do take it apart, will you please let me know how it looks inside? What I'm interested in is whether your chain is rubbing on the block and scraping off aluminum since you don't have the guide.
> Also, I was wondering if I might be off by a tooth. However, if I move the chain by a tooth, then the level line on my chain will no longer be level at the TDC. How about if I retard the timing by a single tooth just to see if it fixes my problem. That won't hurt anything will it?
> thanks,
> Mike.
> --- In
anzhonda600owners@yahoogroups.com
, Mark P Hatten wrote:
> > If it helps, my Blue coupe does not have the black plastic chain guide at all. I just put a new HD cam chain in without it and it runs great. I didn't know at the the time it was even missing. Now I'm thinking about tearing it back apart to put a new guide (slipper) in, but I can't find a replacement anywhere. If yours is backfiring, you are off a tooth
http://www.youtube.com/watch?v=l2anDmZjtF8
www.mphspecialties.com
> > To:
anzhonda600owners@yahoogroups.com
> > From: megamike78@
> > Date: Mon, 6 May 2013 00:41:27 +0000
> > Subject: [anzhonda600owners] Re: Cam Chain guide - go without it?
> > Thanks Bill, I think I know exactly what I need to do.
> > My chain does rub against the slipper. When I rebuilt the engine, the pin holders in the block were worn away. I had a welder build up aluminum in those spots and then I used a dremmel tool to cut new pin holder slots for the slipper to sit on. However, I don't think I cut those spots where they should have been and the slipper pushes very slightly on the chain. I think this causes a slight advance in the valve timing, which causes the intake valve to open just as the spark plug fires on the end of the exhaust stroke(due to the design of the engine).
> > I'll have to push back those pin slots so the slipper sit farther away from the chain.
> > --- In
anzhonda600owners@yahoogroups.com
, "Bill" wrote:
> > > Hi Mike;
> > > Yes, it sounds like timing. And, if your slipper is touching your cam
> > > chain, then its not sitting properly. A tight cam chain shouldn't be
> > > rubbing against the slipper. Maybe you forgot the pin in the bottom of the
> > > slipper, there are two pins holding it in place or maybe it slipped out.
> > > But you do need it. If it wasn't there the cam chain would eat away at the
> > > aluminum and cause metal chips to fall into the crank case. The metal chips
> > > will eventually flow into the bearing cages on your crankshaft and then over
> > > time will eat the bearing cages to a point that a rod will start knocking.
> > > Or before that happens chips will get into the bearings on the transmission
> > > counter shaft causing it to fail. It's not hard to fix the pins if the seat
> > > in the cylinder barrels has warn. Use JB Weld and make them permeant Oh if
> > > there is a failure in the slipper, you can remove the JB Weld and put in
> > > new pins and slipper a whole bunch easier.
> > > If I can suggest it, look at the file on the yahoo group site "Changing out
> > > your Cam Chain" It will give some trouble shooting guides and get your car
> > > timing back.
> > > Bill
> > > _____
> > > From:
anzhonda600owners@yahoogroups.com
> > > [mailto:
anzhonda600owners@yahoogroups.com
] On Behalf Of Mike
> > > Sent: Sunday, May 05, 2013 3:20 PM
> > > To:
anzhonda600owners@yahoogroups.com
> > > Subject: [anzhonda600owners] Re: Cam Chain guide - go without it?
> > > Yes, I actually meant the slipper. I forgot it was called that.
> > > My engine has been backfiring into the intake manifold. It's like the intake
> > > valve is opening too soon or something. The problem becomes less severe if I
> > > significantly advance the timing, but still happens.
> > > It's very frustrating. I set the valve timeing using the line on the
> > > camshaft, and it looks pretty good. It's definitely not off by a full tooth.
> > > --- In
anzhonda600owners@yahoogroups.com
> > > , "Bill" wrote:
> > > > Hi Mike
> > > > Are you talking about the slipper?
> > > > Bill
> > > > _____
> > > > From:
anzhonda600owners@yahoogroups.com
> > > > > > [mailto:
anzhonda600owners@yahoogroups.com
> > > ] On Behalf Of Mike
> > > > Sent: Sunday, May 05, 2013 2:53 PM
> > > > To:
anzhonda600owners@yahoogroups.com
> > > > > > Subject: [anzhonda600owners] Cam Chain guide - go without it?
> > > > Hi guys,
> > > > Has anyone ever put there engine back together WITHOUT that long skinny
> > > > crumbly plastic coated cam chain guide? I mean, how much of a guide is it?
> > > > Will the chain come off track with out it? It seems like there is already
> > > > enough stuff holding the cam chain in place.
> > > > What do you guys think?
> > > > the reason I ask is because I think my chain guide is pushing on my chain
> > > > too much and causing a slight advance in the valve timing. It pushes a
> > > > little more on the chain after I rebuilt the engine and rebuilt the
> > > holders
> > > > for the chain guide.
> > > > thanks,
> > > > Mike.