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Re: was 4.2 L locked up- Help! now: engine turns freely

To: Jim Stuart <jimbb88@erols.com>
Subject: Re: was 4.2 L locked up- Help! now: engine turns freely
From: Susan and John Roper <vscjohn@iamerica.net>
Date: Mon, 14 Dec 1998 19:57:24 -0600
Cc: MGV8 list <mgb-v8@Autox.Team.Net>, Woody Cooper <SMCTR8@aol.com>
Organization: Vintage Sporting Cars
References: <3675A32F.1109F56D@erols.com>
Reply-to: Susan and John Roper <vscjohn@iamerica.net>
Sender: owner-mgb-v8@Autox.Team.Net
Jim, before you go back with the tranny, best check the length and diameter
of the input shaft, the spigot bush at the end of crank, and the splines.
Bottoming could be source of your problem.  John

Jim Stuart wrote:

> To the list & all who responded with suggestions, thanks.
>
> Got some time to attack the problem, with some help, we found that the
> flywheel moved slightly, but the harmonic balancer at the other end did
> not even quiver. Initial diagnosis was a broken crank, no X-mas presents
> for the grandkids. Well, I wouldn't really short change the little
> ones....
>
> Decided that 30 degrees of crankshaft rotation, via the starter motor,
> was not enough to develop the required momentum to break that great big
> lump of steel, whatever stopped it. Next step was to pull the pan. This
> proved to be suprisingly easy, considering I have a chrome bumper front
> crossmember. The pan came out with the gasket intact, so I figure I'm on
> a roll. Got the drop light, close visual inspection, nothing out of
> place. No big rocks wedged next to the crank, or any nuts or bolts.
> Really on a roll, now.
>
> Well, how about some real fun. Pull the tranny. Engine still locked up.
> More fun, pull the bellhousing. Engine still locked up. Visual shows
> nothing wrong, nothing on the other side of the flywheel that I can see
> or feel. Engine still locked up, the roll is slowing down. Nothing to
> loose, off comes the clutch disk & pressure plate. IT MOVES! the engine,
> that is. Turns freely by hand on the flywheel 'till compression comes
> up, then an assist from Mr. Wrench is required, but still an easy turn.
> And NO, the clutch disk was not on backwards (mine was marked "this side
> toward engine"). Just for fun, I decided to remove the flywheel too.
>
> Don't know what was wrong. No pieces fell out, nothing broken. Clutch
> looks fine as does everything else. Reassembled the flywheel, clutch &
> bellhousing, turning the engine to check at each step. Everything seems
> fine. Ran out of time, so the tranny is not in yet. That should be next
> Sat. I will give all the nuts & bolts a check, & see if it will start &
> run. Don't see any reason it won't.
>
> At some time in my life I must have angered the Great God Mowog, & this
> is payback. I can't think of anything else.
>
> Jim Stuart
>
> looking for a cheap rubber bumper B with a perfect body & no drive train
> in the DC area- time to start another V8.
> also, a Buick 4-speed bellhousing.




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