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Miles
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Joined: 05-06-2005
Location: San Diego, California USA
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Is the 74.5 JH steering wheel bolt pattern identical to any other car? ie- miata, triumph, RX7, mr2......thanks

Mark Rosenbaum
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Joined: 03-12-2005
Location: Kingman, Arizona USA
Posts: 532
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Actually, bolts are not involved.  The stock wheel has a splined hole, fits directly onto the splined steering column shaft, and is held in place by split collar pieces on one end, and a large securing nut on the other.  The securing nut is hidden from view by the escutcheon plate at the center of the wheel.  See the attached sketch.

IIRC, the steering column came from an early-1970s Vauxhall, and presumably parts from that vehicle would fit.  Someone once remarked that a 1960s Chevy Corvair steering wheel would fit, but AFAIK that hasn't been verified.

If you're interested in an aftermarket steering wheel, Motolita offers a 9-screw hub adapter for the JH as well as an assortment of world-class wheels.  I have these on my own car and recommend them highly (usual disclaimers).  There's at least one other aftermarket steering wheel manufacturer with a hub that fits the JH but at the moment I don't recall which.

Alternately, it's possible to take a surplus JH steering wheel to a machine shop that will turn it into a hub that will fit whatever steering wheel you want to use.  I don't know of anyone who's tried this, though.

Attachment: Steering wheel.gif (Downloaded 77 times)

Lawrence Tod
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Joined: 04-11-2005
Location: Westerhall, Grenada
Posts: 30
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Delta Motorsports offered a variety of after market steering wheels
availablein various sizes (diameters), and styles (3 spoke ,four spoke, dished no dish) and their respective adapters in the flyer immediately pre christmas last year.

Might want to start looking there. I'm thinking about it myself.


Lawrence Tod

Jay
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Joined: 08-05-2005
Location: Canton, Ohio USA
Posts: 73
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My 74 JH has the silver and black escutcheon plate at the center of the steering wheel. The rubber material around it is chipped showing signs of someone trying to "dig out" the plate. What is the correct approach to remove this center plate to reveal the steering wheel nut?
Thanks,
Jay

John Finch
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Joined: 08-01-2005
Location: Minneapolis MN
Posts: 120
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I recently replaced my stock steering wheel with an aftermarket Astrali as nothing was avail from Delta or Molita. There are 36 splines on the 5/8" shaft if that info helps.  I didn't reuse the the split collar on the new wheel. Just modified the turn signal shutter offer (technical term) and put it on securing it with the shaft nut only. So far no problems. John

Mark Rosenbaum
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Joined: 03-12-2005
Location: Kingman, Arizona USA
Posts: 532
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Unfortunately, the escutcheon sits in a groove in the wheel, and as far as I know, the only way to remove or reinstall the thing is to use leverage (for me, it was always a bit easier to do this from the short side).  Probably this wouldn't have caused much of a problem 30 years ago when the steering wheel plastic was new and still resilient, but nowadays that's unlikely to be the case.  Using a thin tool like a putty knife or a really tiny crow bar might be less damaging overall than using a screwdriver.  A really smooth polished metal surface on the tool should also help.

To deal with existing damage to the steering wheel, you might try smoothing down any dents or notches with a sanding block or sandpaper, followed by one of those fluids used to leave vinyl fabric with a semi-gloss or glossy finish.

As an alternative, consider sanding away the entire rim of the escutcheon mounting area so that the escutcheon will drop right in without force.  You can then secure the escutcheon to the car by epoxying a suitably spaced magnet to its rear.

Ron Mau
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Joined: 03-14-2005
Location: Davenport, Iowa USA
Posts: 61
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Use some heat from ahair dryer or a paint remover to heat up the rubber and then it will come quite easily and not leave any dents.

Ron Mau

 



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