Now wait a minute, all these guys have been telling me that 5 psi at
hot idle is not unreasonable... so why are you rebuilding at 10??
Lester
.. hmm, maybe it's the 948 vs 1500 thing..
On Dec 23, 2006, at 9:56 PM, Adrian Jones wrote:
> Hi Folks,
>
> First off, many thanks to the kind people who responded to the
> question of jack stands and/or ramps. I'm glad it started a big
> discussion on the safety aspects of working on these cars.
>
> I decided to stick with jack stands - two 3 ton stands under the
> front cross member (and then two 2 ton stands slid back under the
> frame, as back up. I also put the scissor jack back under the
> front cross member. Back wheels are chocked, front and back. Hand
> brake is on, car in gear.
>
> I think that is the hard part about replacing the bearings/ thrust
> washers from underneath - safely supporting the car before you
> crawl under.
>
> Anyways, using a feeler gauge, the crankshaft endfloat, measured
> between the rear main bearing housing and the counterweight (?) is
> 49 minus 40 = 9 thou. ie within spec ( 0.006 to 0.014). I used a
> clean mini crow bar to slide the crank back and forward.
>
> I am going to replace the main bearing (oil pressure goes down to
> 10 psi when hot, idling) and leave the thrust washers well alone.
> The big end bearings where repaced a couple of years ago.
>
> What do you think.
>
> Merry Christmas, one and all!
>
> Adrian, 1500 Midget
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