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Mazda Zero - a few questions!
May 12, 2017
11:57 am
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cjwood23
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Hi Guys,
I dabbled with the idea of a kit car a while back, but like most plans these got shelved due to family etc.
No I have bit more spare time (and hopefully space) I'm thinking of building a Mazda based Zero - I have a few questions though if you don't mind.

1. Is there anywhere that sells donor kits? - Would sooner start with a box of bits & do a bit of refurb work than have to strip a donor.
2. What's the approx. weight of the Mazda Zero?
3. What modifications need making to the stock inlet manifold/throttle bodies?
4. Performance of a stock 1.6 Mk1 in the Zero - obviously lighter, but is 100bhp enough?
5. Would it be better going the 1.8 route? - any additional work required to get the larger engine to fit?

Thanks in advance!

Chris

May 12, 2017
1:41 pm
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Simon
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GBS were stripping cars for customers, I don't know if they still do

There are a lot of variants but on average, about 550 to 600 Kg

Mods will depend very much on the donor, the MX has gone through a lot of evolution since the Mk1, which the Zero was altered to suit, and I doubt that anyone will have a full list of mods to suite every combination out there. Be wary of blogs as builders will only have knowledge of the vehicle they built, unless your donor is exactly the same as theirs information may be wrong. Decide on a donor and especially if GBS are stripping they should be able to mod to suit. and talk to them, they have at least seen a number of different donors fitted and the mods needed.

When looking at performance look at BHP per Ton, and the Zero if a lot lighter than a donor.

The early 1.8 will fit, the problem comes with the inlet, and height of VVT and some extra wiring to get everything working.

May 12, 2017
4:56 pm
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Mitch
Gloucester
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GBS are currently doing the Mazda starter kit will all the Mazda parts stripped and good to go. Can't remember exactly what's included but their advert is on eBay so worth a look.

May 12, 2017
7:17 pm
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mac22002
Grays Essex
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Hi Chris
I'm currently building a mazda GT kit and planning on using as much of the donor as possible. Take caution as Simon has suggested with regards to blogs ( mine being no exception) , but have a look at my blog and youll get an idea of where I'm at. Before committing, I read many and made my conclusions from there. It seems the ford's are more straight forward to build than the mazda, but there is a cost implication . I'm finding the mazda build challenging at times, but that's all part of the fun.

May 13, 2017
10:00 am
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Mitch
Gloucester
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Found the link I mentioned: https://www.ebay.co.uk/itm/262981647490

Seems to have all donor components

May 13, 2017
10:28 am
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Simon
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engine and gearbox?

May 13, 2017
12:32 pm
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Mitch
Gloucester
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Shows a pic of the engine but not gearbox. It does say includes ALL donor parts though so I'd assume it's a yes

May 13, 2017
2:15 pm
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cjwood23
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Thanks for the link.
If you zoom in on the engine looks like the 'box is attached.

May 13, 2017
5:19 pm
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Simon
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well if so that looks good value, but you will need a "little" more to get it on the road Cool

May 14, 2017
3:59 pm
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cjwood23
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Simon said
well if so that looks good value, but you will need a "little" more to get it on the road Cool  

Appreciate it'll need more lol, but includes all the main mechanical bits.
Other 'big doesn't items are going to be wiring looms, ecu, tank, wheels and steering rack from what I can see?
Anything else I missed?

May 14, 2017
4:10 pm
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Simon
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I didn't get involved in sales, and I rarely built them new, I concentrated on getting customers through IVA, electrical and mechanical work, so anything I think of will not be an exclusive list.

dash, the grp one looks better and is IVA compliant, the Zero original can be but needs work
switches
clocks
brake lines
fuel lines
seats, sill trims
trim kit for IVA
lighting, if not part of the kit
repeaters
sub looms, Aux, Engine,headlights, dash
fuel pumps
swirl pot
rad
coolant pipe kit

as I say, may have missed a few things SmileSmile

June 16, 2017
2:56 pm
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WallerZero
Coventry
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Late to the party but can confirm 1.6 engine is plenty fun!! Although thats the Eunos spec at 115bhp and not the UK at 90bhp. 1.8 gets 130-140bhp so bit of a hike from 90, eitherway, you're still gonna have a great time! Once built you can then look at the very well trodden path of forced induction on the mx5 engines, easily bumping them up to 200bhp (250 on stock internals if you're feeling slightly more nuts and the desire for more power grows - there is no escaping it!)

My 1.6 weighed in at 550kg pre IVA (no windscreen) and used a pretty much stock engine and loom. I reckon 500kg was possible if I'd gone for ITBS, aftermarket loom (thats a lot of unused wiring in the original loom) and GRP/Carbonfibre seats.

Intake manifold wise, I think GBS now have addressed the issue of it clashing the chassis so mention it to them and they can build it with the desired clearances - it was literally the diagonal cross bar in the engine bay that anything but the mk1 1.6 engine would clash with.

Don't forget the exhaust and manifold, unless you like upsetting your neighbours 😛 I have a 1.6 manifold if anyone wants to make me an offer 😉 is it pre-95 Simon that didn't need a Cat? That saves £100 on the silencer 😀

Just remember there is a number of little items that will be picked up on the way, steering rack extenders, Drive/Propshaft mods, new ball joints etc, more trim (you always run out!) loads and loads of random bolts, and tools, you can never have enough tools 😉

Mazda Zero 2.5L KLDE V6
Registered: March 2014.
Build Blog: http://zachsgbszero.blogspot.co.uk/

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