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Car Forum / Mazda / Mazda Miata / March 2008

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Finding the jacking points on an NB with body cladding

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earache@spymac.com - 08 Mar 2008 15:54 GMT
I've always felt the silver-gray body cladding on my 2003 Shinsen
edition looked nice, but it's apparently going to be a bit of a
hindrance to jacking the car up.  For one thing, it seems unlikely I'm
going to be able to use Lanny's trick of lifting one whole side with a
jack and a grooved 2x4, which would have been nice.  But forget that
for now, I just want to make sure of where the jack points are.  After
some dirty groping along the underside (can I still call her Classy
GGG?), here is where I think they are (this is an NB, FWIW):

Rear: If you drop a line straight down from the keyhole, it's just a
hair rearward of that on the pinch seam, but forward from the rear
edge of the door.
Front: Just forward of the forward edge of the door.  This one I'm
less sure about because besides the twin notches I think I was feeling
some other stuff too.

While I'm at it, my current plan to jack up one side of the car is to
lift at each jacking point, then reach under the car to place a jack
stand on the subframe, roughly what looks like several inches inward
(toward the centerline of the car) from each jacking point.  I got
this idea after perusing the pics at http://www.cardomain.com/ride/472010/7
and thinking about what my options were.

Am I good so far?

Thanks
Eric
Lanny Chambers - 08 Mar 2008 19:53 GMT
In article
<f0d7a4e4-14f5-45a1-8c49-5c4596d8c5bb@h11g2000prf.googlegroups.com>,

> While I'm at it, my current plan to jack up one side of the car is to
> lift at each jacking point, then reach under the car to place a jack
> stand on the subframe, roughly what looks like several inches inward
> (toward the centerline of the car) from each jacking point.

The subframes carry the suspension. The places you describe are just
boxed sections of the floorpan, probably not strong enough to support
the car without risking damage. You could jack the front crossmember to
lift the front, place two jackstands at the front rocker panel jacking
points, then jack the differential and place two more stands in the rear.

You won't find the jacking points by feel--you gotta grovel and use your
eyeballs.

Signature

Lanny Chambers
St. Louis, MO
'94C

earache@spymac.com - 08 Mar 2008 20:39 GMT
> In article
> <f0d7a4e4-14f5-45a1-8c49-5c4596d8c...@h11g2000prf.googlegroups.com>,
[quoted text clipped - 8 lines]
> boxed sections of the floorpan, probably not strong enough to support
> the car without risking damage.

I'm sure I didn't describe what I mean well.  A ways inboard from the
rocker panel jacking point is sort of a protuding square bar that runs
longtitudinally, and is double-thickness at the north and south ends.
First two pics on http://www.cardomain.com/ride/472010/7

Once I jack the car up from the rocker panel, my plan is to lie down
alongside the car, reach underneath and place a jack stand under this
section, then lower the car back down onto it.

You could jack the front crossmember to
> lift the front, place two jackstands at the front rocker panel jacking
> points, then jack the differential and place two more stands in the rear.

Something like this occurred to me, but the front of the car is pretty
low to the ground.  Seems like to get a jack on the right spot and
have enough clearance to use it may require some pre-raising of the
front end.  I guess a couple 2x4s might do it, or ramps.

> You won't find the jacking points by feel--you gotta grovel and use your
> eyeballs.

Yeah, when I actually do it (I think I'll get a slotted jack pad
first) I'll be getting down low--bought a creeper yesterday.  Just was
curious if those were roughly the locations.  Damn that cladding.

> --
> Lanny Chambers
> St. Louis, MO
> '94C
Lanny Chambers - 08 Mar 2008 22:31 GMT
In article
<7e986cc9-17d7-4fc5-94bc-4af0166aa459@e6g2000prf.googlegroups.com>,

> I'm sure I didn't describe what I mean well.  A ways inboard from the
> rocker panel jacking point is sort of a protuding square bar that runs
> longtitudinally, and is double-thickness at the north and south ends.
> First two pics on http://www.cardomain.com/ride/472010/7

Gotcha. If Rich says they're safe, I'm sure they are.

Signature

Lanny Chambers
St. Louis, MO
'94C

Chris D'Agnolo - 09 Mar 2008 15:28 GMT
Here he is suggesting "groveling" again, hmmmmmm you gotta wonder 'what's
that all about?"  ;-)

cd
99BBB

> You won't find the jacking points by feel--you gotta grovel and use your
> eyeballs.
earache@spymac.com - 09 Mar 2008 16:04 GMT
Lanny isn't married, by any chance?

> Here he is suggesting "groveling" again, hmmmmmm you gotta wonder 'what's
> that all about?"  ;-)
[quoted text clipped - 9 lines]
> > St. Louis, MO
> > '94C
Lanny Chambers - 09 Mar 2008 17:26 GMT
In article
<c162cead-b434-435f-90d6-1bea56f54862@s8g2000prg.googlegroups.com>,

> Lanny isn't married, by any chance?

Only for 37 years. The secret to a long, successful marriage: give in
early and often. Groveling isn't strictly necessary...but it couldn't
hurt.

Signature

Lanny Chambers
St. Louis, MO
'94C

 
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