hotchocolate
hotchocolate New Reader
7/3/11 12:58 a.m.

I replaced the shocks on my 147k NA miata today with stock NB units. It took me about 8 hours. A third of that time was spent wrestling with rusty nuts and making rookie mistakes. As Keith said, penetrating oil is your friend. I prepped all the ones that i thought might give me problems--and they gave me none. I was not expecting the nuts in the trunk to be so problematic--especially the one hiding under the filler hoses. Why/how does a car have rusty nuts in the trunk???!!! Could it be the battery? Anyway, ended up having to take out the fuel filler neck so i could get to that last nut that i had rounded in my frustration.

Anyway, the point of this post is not to complain, but to share two things i found interesting.

The lug nut wrench works well if you need something to hold the front upper A-arm(?) nut--the one at the end of the long bolt.

The jack can be used to push down the rear upper a-arm(?) in order to re-install the shock assembly. I found this out after I could not find a rod or bar long enough to give me the proper leverage. After staring at the jack for a while i had this idea to give it a try. It sits rather precariously on the upper arm, but the slot in it fits the "sheet metal" next to the shock mount(?) rather well. I used it for leverage and then installed the shock top first. I used the two 14mm nuts to hold it loosely in place. After lowering the jack the lower a-arm comes back up to meet the lower shock mount. A title bit of wiggling and i got the lower bolt in. It save me a lot of frustration and i thought i should share. This may already be common knowledge, but i just realized that today. If it is not common knowledge, anyone care to give it a try to see if it works well enough and is safe enough to recommend?

Anyway, I think that it is interesting that things meant to change a tire helped me with changing my suspension. Do you think those who engineered the car planned for that?:)

Apart from the fact that the car now looks like its AWD, i like this set up. The feel of the front didn't change much, but the rear is much better. It could be the newness or design, but I do not have to cringe driving over dips anymore. By the way, Keith's book was very helpful. I read that chapter 3-4 times before starting this project. The best tip was penetrating oil and taking off that long bolt. It made it so much easier.

Good night y'all. It is late and i am rambling.

iceracer
iceracer SuperDork
7/3/11 10:36 a.m.

Shocks won't change ride height. Tightening suspension bolts on full droop can do that. Should settle after awhile,

EvanB
EvanB GRM+ Memberand SuperDork
7/3/11 2:43 p.m.

Putting NB (second gen) Miata suspension on a NA (first) will raise the ride height a bit.

mistanfo
mistanfo SuperDork
7/3/11 2:51 p.m.

And the improved feel in the rear when going over bumps is larger due to the additional travel the NB design offers. Shocks with lower mileage likely help too.

Josh
Josh Dork
7/3/11 3:10 p.m.

If all he changed is the shocks (the NA mounts are still installed), he actually has less rear travel.

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