Listers
Does anyone have a 1250 speedo off a 1967B laying around they would be
willing to part with? Has anyone tried this move to rectify the problem?
Jim
Larry Hoy wrote:
> All cars after 1973 had 1000 tpm speedos. So afer 1973 they used the
> gears at the transmission to compensate for OD or Non-OD cars. Your 73
> OD was set up for a 1280 TPM speedo. It would be easy to swap 73 speedo
> for the 78 speedo...if they were the same size. So you could look for a
> 1280 speedo from a 1967 car.
>
> There are some transmission speedo gear issues you could deal with but I
> don't have all that information off the top of my head. Perhaps someone
> else does.
>
> Good luck.
>
> Larry Hoy
>
>
> > Listers,
> > Sent my 1000 Smith Speedo for my 78B to Niosenger's 5 weeks
> > ago to have it calibrated. Got a call on answering machine
> > to call. Did that this morning and to my total surprise,
> > they can't calibrate it. Dan said that the late speedos have
> > cheap plastic gears and they can't be fixed. I have a 73
> > engine and O/D in my 78B. When I did the rolling test he
> > recommended, counting the turns the speedo cable makes with a
> > paper clip attached, it came out really high. As in 19 and
> > 1/4 revolutions. He
> > said it should have been around 14 and some. How could it be so far
> > off? I have 185/70 R14 Firestone tires on rothstyle wheels.
> > The speedo reads 80 when I'm actually doing about 60 mph. Is
> > the gearing in the O/D
> > that far off? Any suggestions?
> > Jim
> > 78B for sale
> > 70B
> > seeking MGCGT when 78B is sold.
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