Lee
If 1.85 is .030 under then you would have to go to .090 under for #4 to clean
up.
I would be leery of turning that more than about 3000 RPM in that condition,
IF you can get the bearings for it.
A much better option is another crank.
BillM
> Date: Thu, 5 Nov 2009 18:35:18 -0600
> From: lee.fox@sbcglobal.net
> To: spridgets@autox.team.net
> Subject: [Spridgets] Can this crank be reground?
>
> I picked up a 1500 engine with a known bad rod knock. It was free, but
> has the desirable higher compression head and flat pistons. I don't know
> what cam is in it yet.
>
> I pulled the pan off and took a peek at the bearing. Number 4 was a
> mess, but the others were not too bad. This engine had been worked on
> before and had .30 under rod bearings and .10 under mains. When I used
> my "accurate" Harbor Freight digital calipers to measure the rod
> journals I came up with the following:
>
> #1 - 1.840 - 1.844
> #2 - 1.842 - 1.845
> #3 - 1.835 - 1.850
> #4 - 1.791 - 1.80
>
> Question: Can this crank be reground or is it too far gone?
> Thanks.
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