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camber and speedo questions
Posted 08 May 2004 - 08:27 PM
2. With the inrreased tire size, the Miata website says I am now travelling about 10% faster than the speedo says. Is that the same with the odometer reading also? Am I actually going about 10% farther than the odometer reads? I thought the speedo ran off of a gear in the transmission (and I assume the odometer is relative to the speedo). Please advise-I'd be tickled to believe I'm getting more miles to the gallon.
Posted 09 May 2004 - 11:35 AM
Posted 09 May 2004 - 11:58 AM
As for the speedo question--the answer is yes--your speedo & odo will be wrong--you can get a reducer that will change the cable rpm down the correct amount if you want or live with it--you sure won't get tickets that way!!
Posted 09 May 2004 - 12:55 PM
2. Do you have any clue wherea guy could find such a reducer? Since I'm going to install a 5 spd tranny, I might as well do it then. Cost? Thanks.
Posted 09 May 2004 - 06:36 PM
As to the reducer--I know a speedo shop in Portland,OR that will do them--They make a two-piece speedo cable & insert the box where-ever you want--As to the cost-Shrug--I don't know--You might be able to find a shop closer to you--time to go explorin'
Posted 09 May 2004 - 08:15 PM
Posted 09 May 2004 - 09:14 PM
2) The odometer is off as well. The whole device is off by 10% since it's all ran off that one cable from the tranny.
Posted 09 May 2004 - 09:55 PM
Posted 09 May 2004 - 10:27 PM
you also need to be sure you do the proper amount of beating on the inner strut towers to allow the spring to move in as well.
if you oval out the strut tower mount holes, you will also need to beat the inner fender enough to make sure the spring isn't rubbing...
do you have your springs adjusted up as well?
Posted 09 May 2004 - 10:50 PM
Posted 09 May 2004 - 11:39 PM
Unfortunately, there isn't much you can do to get more neg. camber because when lifted, the automatic built in camber correction puts the strut as close to the inside strut tube wall as physically possible without doing major reconstruction to enlarge the strut tube on the car. If one were to be so motivated, they could split the tube and reform it to an oval running laterally so the strut top could be moved in further but I don't know that the re-engineering time and effort would be very cost effective in the long run.
I have had mine on for about 2 years. I (right now) am still running the 13" wagon wheels with 185/80-13's and drive about 15,000-20,000 miles per year on the highway in the car. I can't say that mine has had any exceptional tire wear due to the positive camber, though when I lift the front struts all the way to level the car it does seem like I start to get a little outside tread wear, but nothing obnoxious. I'm on my second set of tires in about 50,000 mi. My first set were lug type snow tread tires so any wear at all on the edge really stood out and the compound wasn't optimum for high mileage highway driving (they discontinued them in 13's). The current set are highway type tread and edge wear is negligible after 10-12,000 miles. As far as handling due to pos camber, I can't tell much, if any, difference post-stock that can't be explained rather by the higher ctr. of gravity than positive camber.
It would be nice to be able to get the camber down to at least 0 deg when lifted all the way cause it sure looks silly when I adjust it up and the tires are leaning out at the top going down the highway.
I'm getting ready to put some 205/75-15's on it. I'm curious to see how the extra height will affect the look (positive camber)....with a taller tire, it may stand out less.(I hope).
Posted 10 May 2004 - 12:01 AM
I was in the process of writing and editing my post...I hate this old keyboard with sticking keys...
After I finally got my post up, I went back and read what you've done...
I presume that is the adapter you ground the inside edge from. Looks like that might help a little but I don't know, on my EA-82, how much hammer-modification I can do to make more spring room. I may try it when I put the 15's on.
Good idea ... and fairly simple!
Posted 10 May 2004 - 01:39 AM
I won't be able to easily identify if I'm wearing the outside edges, since they were already worn from being on MtnGrizzly before...... (it didn't have the modified strut tower)
Posted 10 May 2004 - 01:40 AM
Posted 10 May 2004 - 01:42 AM
Posted 10 May 2004 - 08:24 AM
When I look at my tires from the front, there is lots of toe-in. That's negative camber right?
Posted 10 May 2004 - 09:29 AM
Pos Camber = \ /
Neg Camber = / \
Looking at the wheels from above the vehicle, front of vehicle pointed towards you
(think pidgeon toed, or walking like a duck )
Toe In = \ /
Toe Out = / \
Posted 10 May 2004 - 09:51 AM
I cant decide if all vibrating in the rear is my driveshaft (which I can tell through the floor boards is slightly off) or if its from my suspension and tires.
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