[tcb] Re: Ronnie's engine
- From: Mark Sawyer <mechmark@xxxxxxxxxxxxx>
- To: tcb@xxxxxxxxxxxxx
- Date: Tue, 28 Mar 2006 06:48:03 -0800 (PST)
How do you use plasti-guage on a bearing mounted to the crank?? Do you put it
between the outside of the bearing and the case? I use Royal Purple assembly
lube. I have never heard of break-in additive. But, I'm always open to new
ideas.
Will Wood <evilscientistboo@xxxxxxxxxxxxx> wrote: If the #4 seized on it, IMO,
check the align bore with a straight edge and
plasti-gauge each journal. I also use GM Break-In additive ($6 from the
local GM dealer). I haven't had a flat cam or bearing failure since I
started using this stuff. Just put it in the crankcase.
-----Original Message-----
From: tcb-bounce@xxxxxxxxxxxxx [mailto:tcb-bounce@xxxxxxxxxxxxx] On Behalf
Of Bob Perring
Sent: Tuesday, March 28, 2006 8:00 AM
To: tcb@xxxxxxxxxxxxx
Subject: [tcb] Re: Ronnie's engine
Can't be more "check everything" than that !!
May never know what the culprit was.
Bob
============
At 07:38 3/28/2006, you wrote:
>All tolerances were checked and within specs. The engine had about
>500 miles on it. used a straight 30 weight oil for break-in. The
>engine temp never got over 190 degrees. when I built the engine it
>turned over freely without the plugs in so I don't think I missed
>the bearing pin when I assembled the crank. the end play was set
>with a dial indicater to proper specs. the only thing I can think of
>is a restriction in the oil galley going to the bearing. it has a
>very small hole for the oil to get thru and wouldn't take much to
>block it. I will have the block boiled out and all oil galleys
>checked again. --
>Mark
>
>
>Bob Perring
wrote:
>That would sure do it.
>It is amazing what a slight clearance difference will do to oil flow
>restriction when sleeve bearing tolerances are too tight.
>Bob
>====================>
>
>
>At 05:48 3/28/2006, you wrote:
> >I have seen it a couple of times. If the oil galley is plugged it
> >will run for just a couple of minutes before seizing. Sounds more
> >like the dowel pin hole is too shallow causing the pin to push on
> >the bearing slightly.
> >
> >
> >----------
> >From: tcb-bounce@xxxxxxxxxxxxx [mailto:tcb-bounce@xxxxxxxxxxxxx] On
> >Behalf Of Mark Sawyer
> >Sent: Monday, March 27, 2006 9:20 PM
> >To: tcb@xxxxxxxxxxxxx
> >Subject: [tcb] Ronnie's engine
> >
> >Found the problem. It's confusing the devil out of me. The #4 main
> >bearing next to the pulley had seized. This is one I have never seen
> >seize before. I was expecting the front main next to the flywheel.
> >The block is still standard so a .10 line bore is in order. The
> >crankshaft is standard as well so a .10 turn is in order for it as
> >well. Has any o ne ever seen this bearing go out???
>
>
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