Search found 311 matches

by Keith Jones
Sun Nov 10, 2019 8:08 pm
Forum: MX5 Power & Power Mods
Topic: common issues with engines in 1991 NA?
Replies: 3
Views: 279

Re: common issues with engines in 1991 NA?

You could go with either a turbo or a supercharger. You won't get anywhere near that power normally aspirated. MX5 engines don't have a good head design, unlike Toyota or Honda. You will need around 8 to 10 psi boost to get 200 bhp. Turbos are much more common, so there is a lot of info around on wh...
by Keith Jones
Wed Oct 30, 2019 11:24 am
Forum: MX5 Power & Power Mods
Topic: common issues with engines in 1991 NA?
Replies: 3
Views: 279

Re: common issues with engines in 1991 NA?

There are really no major issues to be worried about providing the engine has been well maintained - regular oil and coolant changes, radiator not blocked etc. The stock engine can be increased in power up to about 200 bhp before you need to look at improving cooling. A quick mod that a lot of peopl...
by Keith Jones
Mon Oct 07, 2019 3:33 pm
Forum: MX5 Discussion
Topic: numbers per model in club
Replies: 3
Views: 163

Re: numbers per model in club

Probably not. There are thousands of MX5s in NZ, including the 130 to 150 that are for sale on Trademe at any one time. There are only around 400 in the MX5 Club.
by Keith Jones
Thu Sep 26, 2019 5:21 pm
Forum: MX5 Discussion
Topic: numbers per model in club
Replies: 3
Views: 163

Re: numbers per model in club

We do have that data for those in the MX5 Club of NZ, but this would only be section of the total MX5 population in NZ.
by Keith Jones
Thu Sep 26, 2019 5:18 pm
Forum: MX5 Power & Power Mods
Topic: I want to manual swap my 1990 1.6 automatic but ive heard bad things about the 1.6 engine, thoughts?
Replies: 2
Views: 166

Re: I want to manual swap my 1990 1.6 automatic but ive heard bad things about the 1.6 engine, thoughts?

Don't believe all you read on the internet about the differences between the auto engine and the manual. Most of this info comes from the US, which had different engine specs from the JDM models that got imported into NZ. In the US the cams were different between the two engines. The JDM engines had...
by Keith Jones
Fri Aug 30, 2019 2:35 pm
Forum: MX5 Discussion
Topic: looking for a NA mx5
Replies: 1
Views: 163

Re: looking for a NA mx5

The price can be anywhere between $2k and $5k depending on condition. A quick look on Trademe shows 20 cars in that price range.
by Keith Jones
Mon Jul 29, 2019 4:59 pm
Forum: MX5 Electrical, Audio, Alarms & Electronics
Topic: Where to buy a new NB Battery
Replies: 1
Views: 561

Re: Where to buy a new NB Battery

You can use any suitably sized lead acid battery from Repco, Supercheap etc. Just measure up your current one.
The one Mazda quoted you on was probably the OEM style gel battery. A very good design, and long life, but not essential.
by Keith Jones
Thu Jun 06, 2019 3:57 pm
Forum: MX5 Electrical, Audio, Alarms & Electronics
Topic: Blower Weakness
Replies: 2
Views: 337

Re: Blower Weakness

When you says the previous owner deleted the A/C, how much did they take out? There should be a big black box behind the passenger's glove compartment. This is the A/C evaporator. If they removed or modified this, the air from the blower might not be getting to the heater unit.
Behind dash.jpg
by Keith Jones
Thu Jun 06, 2019 3:31 pm
Forum: MX5 Suspension, Wheels, Tyres & Brakes etc
Topic: 15x8, 0 Offset D-Windows
Replies: 2
Views: 324

Re: 15x8, 0 Offset D-Windows

NA''s are very sensitive to wheel/tyre weight, as you are aware.
This is particularly so if the shocks haven't been replaced recently.
I don't know how much a 15x8 D window weighs, but it it's anything more than about 7kg, I'd be very cautious about using them. The NA was designed for a 4.5kg wheel
by Keith Jones
Fri Jan 11, 2019 8:30 am
Forum: MX5 Discussion
Topic: Mechanic
Replies: 3
Views: 601

Re: Mechanic

Hi. City Garage, 16 Waverley St, Ak central would be your closest.
by Keith Jones
Wed Jan 02, 2019 5:44 pm
Forum: MX5 Discussion
Topic: Mechanic
Replies: 3
Views: 601

Re: Mechanic

Where about in Auckland are you?
The MX5 Club has some recommended mechanics depending on your location.
by Keith Jones
Mon Jul 09, 2018 1:38 pm
Forum: MX5 Discussion
Topic: NA roof vs NB roof
Replies: 1
Views: 1049

Re: NA roof vs NB roof

I can't speak for the ebay roof you are looking at but those from quality suppliers such as Robbins, http://www.robbinsautotopco.com/mazda.php will fit both NA and NB models.
by Keith Jones
Wed Jul 04, 2018 11:06 am
Forum: MX5 Discussion
Topic: Redline Alloy Radiators
Replies: 2
Views: 818

Re: Redline Alloy Radiators

Had one in my 240bhp race car. It performed fine, but being lightweight construction (compared to Koyo or Mishimoto) I'm not sure about its durability on the road long term.
by Keith Jones
Thu Jun 28, 2018 9:37 pm
Forum: MX5 Discussion
Topic: Turbo parts
Replies: 1
Views: 694

Re: Turbo parts

Keep an eye out on the Buy and Sell fb pages like https://www.facebook.com/groups/NZMX5/ People are selling bits all the time. Just a case of not being in a hurry and getting stuff as it comes up for sale. Just need to know what you need for your particular car and what sort of power you are after. ...
by Keith Jones
Fri Jun 01, 2018 2:59 pm
Forum: MX5 Suspension, Wheels, Tyres & Brakes etc
Topic: New Tyres for fast road
Replies: 2
Views: 1445

Re: New Tyres for fast road

Hi Gary. I would not recommend semi-slicks for road use. They tend to be very noisy (ask my wife when I put my Toyo R888s on her MX5 when I was getting new tyres for her) and they follow every ridge in the road, making steering a real chore. Bridgestone RE003s are very good on the MX5. They are quit...
by Keith Jones
Fri Apr 27, 2018 4:16 pm
Forum: Lighting, Electrical & Audio
Topic: Dash warning light.
Replies: 4
Views: 2204

Re: Dash warning light.

It's OK to take the dash bulb out. Won't cause any problems.
by Keith Jones
Tue Apr 24, 2018 3:58 pm
Forum: Lighting, Electrical & Audio
Topic: Dash warning light.
Replies: 4
Views: 2204

Re: Dash warning light.

It's the catalyst overheat light. Check under the car and see if you still have the catalyst. The JDM cars have a sensor to detect if the catalyst is getting too hot. Most catalysts were removed years ago, and when you unplug the sensor, the light should go out. If you still have the cat with the se...
by Keith Jones
Fri Apr 20, 2018 3:15 pm
Forum: MX5 Discussion
Topic: New to MX 5
Replies: 3
Views: 1118

Re: New to MX 5

There aren't many NC owners on this Forum.
Check out https://forum.miata.net/ if you haven't already done so.
by Keith Jones
Mon Apr 09, 2018 8:17 pm
Forum: MX5 Discussion
Topic: Newbie checking in w/ an NA8
Replies: 1
Views: 755

Re: Newbie checking in w/ an NA8

Welcome to the world of the MX5. If you are interested in the social side of MX5 ownership you might want to check out the MX5 Club of NZ Inc, https://www.mx5carclub.co.nz/ A few suggestions about your cons list: Yes, the CAS O ring is the most likely source of oil leakage if it's in that area. The ...
by Keith Jones
Mon Apr 09, 2018 8:08 pm
Forum: MX5 Discussion
Topic: NB 5spd vs 6spd
Replies: 1
Views: 641

Re: NB 5spd vs 6spd

There is no difference in the engine between the normal NB (5 speed) and the RS (6 speed) so the different red line is probably related more to Mazda's expectations of the type of driver than for any technical reason. You might want to look at the engine revs v road speed relationship before decidin...
by Keith Jones
Sat Mar 31, 2018 9:35 am
Forum: MX5 Discussion
Topic: LSD ratio.
Replies: 1
Views: 763

Re: LSD ratio.

Your NB RS will (unless a previous owner has changed it) have the 3.9:1 diff ratio. The only other higher ratio available is the 3.6:1 but these are almost impossible to get in NZ. You would probably have to import one.
by Keith Jones
Sat Mar 31, 2018 9:25 am
Forum: MX5 Discussion
Topic: Gear shift suddenly smoother? Should I be concerned
Replies: 1
Views: 763

Re: Gear shift suddenly smoother? Should I be concerned

I can't think why it should suddenly get smoother, but it doesn't seem like anything to worry about.
by Keith Jones
Sat Jan 27, 2018 11:17 am
Forum: MX5 Discussion
Topic: Replacement Plastic Rear Window
Replies: 3
Views: 1472

Re: Replacement Plastic Rear Window

If the rest of the top is in good condition it would be best check with an automotive upholsterer to see how much replacing the window would cost. It is a straight forward job for any good upholsterer. A good quality new one from overseas, eg Robbins, would cost at least NZ$500 landed and fitting it...
by Keith Jones
Sat Jan 20, 2018 7:57 pm
Forum: MX5 Discussion
Topic: Soft no had leaks on day, next day water was pouring in
Replies: 1
Views: 1049

Re: Soft no had leaks on day, next day water was pouring in

If both seats were wet it sounds as if the windows were not up fully, particularly as there wasn't a problem during the storm. The windows should sit tight against the rubber seals on the soft top and overlap the bottom edge of the seal so water can't get in. While it's probably not a contributing f...
by Keith Jones
Thu Jan 11, 2018 7:34 pm
Forum: MX5 Power & Power Mods
Topic: A bit more acceleration.
Replies: 2
Views: 1254

Re: A bit more acceleration.

The NC has the usual range of go-faster goodies available for it. At the cheaper end there are aftermarket exhaust systems and cold air intakes. For bigger bucks, and bigger power gains, there are both turbocharger and superchargers kits. Unfortunately almost all of these parts have to be imported. ...

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