Mazda MX-5 Miata Forum

PURPOSE of unidirectional tires ????

I read periodically about UNIDIRECTIONAL tires.

WHY do they exist ???

Sounds to me like Chrysler’s silly experiment with L and R lugnuts back in the
60s. Such a great idea they no longer do it. The wheels didn’t fall off after
they did what most if not all other manufacturers did – make all wheel studs R
hand thread.

Mechanics were always snapping bolts during removal with high powered airguns.

TIA

Comments (8)

troubleshoot a rattle

Hello, I own a 91 miata with a BEGI system 3 turbo. I have been getting a
rattleing recently that starts at 2.2k RPM’s and stops at 2.5k RPM’s. It
does it even when i am in neutral. I thought it would be one of the bolts on
the heat shield over the turbo, but it isn’t. I am using 91 octane fuel, and
10W-30 synthetic oil.

here is a video clip of what it does… 5.7MB

http://myweb.cableone.net/shannonv/carrattle1.mpg

-levi

No Comments

changing speedometer cable

Does anyone know where i can find some instructions on how to change out a
speedometer cable in a 94 miata?

Thanks,
Levi

Comments (2)

Valve job

Since it’s Sunday and all the machine shops are closed so I can’t ask them
today and I’m thinking of taking the head off my Miata today, can anyone
tell me what they’ve paid to have a valve job done?

Thanks,
John (’94 Miata)

Comments (2)

Perhaps it's not ALWAYS a good idea to post a pic with your ad

Perusing the Miatas for sale and saw this ad.

http://www.canadatrader.com/trader/carpoint/result/affich.asp?sid=68P…


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How to stop the heat from entering the cabin?

My brother pointed out to me the there is heat coming from the gearshift
area.  Is there a way to stop this?  It is really hot in the summer time

Comments (6)

New radiator, good experience w vendor, nice radiator

Just replaced the radiator on my ’94 5 spd with a/c.  The new one is a
single row plastic and aluminum auto trans spec.  While it’s only one row,
that row is at least twice as large as on the old radiator, about 3/4 in. or
more.  I’m really impressed by the quality and fit of this radiator, it’s a
Koyo A1140.  I got it from www.1800radiator.com for $128.00, they call it a
1140KO.  You have to specifiy the KO, the first one they sent me was an all
metal unit.  They were very nice about letting me take it back to their
local distributor and exchanging it.  I definitely would order over the
phone, not online, so you can specify exactly what you want.

Hope this helps someone,

John (’94 Miata)

Comments (3)

Removing head, advice on other things to do?

Hi all,

Another question; I’m removing the head on my Miata 1.8L, probably going to
do a valve job, definitely going to clean out some carbon.  Any advice on
anything else I might want to do while I’ve got it this far apart (repairs,
maintenance or improvements)?  I’ve got some high RPM (4500+) pinging with
smoke and have some cooling problems on really hot days (often here in
Phoenix) when I run the a/c (although I’m putting in a new, bigger, radiator
and a new thermostat and may have that licked).  I used to have lots of
pinging at all speeds, but cleaning out the EGR passages took care of most
of that.  I don’t think the previous owner ever got it over 3000 rpm or
drove more than 3 miles at a time.

I was going to do a timing belt as it has 93K on it and I didn’t know if the
previous owner had done it or not.  Got the valve cover off and saw that the
belt says Gates on it.  I think I’m safe in asuming that the factory didn’t
use Gates belts.  There’s one thing I guess I don’t have to do.

TIA,
John (’94 Miata)

Comments (2)

Carfax VIN request

Hi group,

Could somebody in this NG be so kind to check this VIN in CarFax?

JM1NA3513N0329479

This american Miata is now located in Belgium (Europe) and I’m curious for
its history. Normally, I would not mind paying for such a service, but this
would be the only american car I’ll probably ever check and I’m afraid an
international money transfer would involve extra costs.

Anyone, I’d be grateful if anyone could do me this one time only favour…
You can reach me at steven.sp…@servico.be

Steven

- – -

Comments (2)

Max Tire Size

I’ve got a ’91 with 7-spoke, 14" factory wheels, currently shod in
185/60-14 rubber.  My son insists it’s possible to get more rubber on
them, and suggests a 205/60-14.  I’ve got Tokico gas shocks/springs,
so I sit around an inch lower than stock.  Any insights?

DonB

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