General Check this out! Turbo Barchetta for sale and its yellow SS

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General Check this out! Turbo Barchetta for sale and its yellow SS

Not so simple to do. I read a detailed blog of how an Australian guy did a 200Hp turbo conversion on his Miata 1.8 (US spec MX5). New pistons, lowered compression ratio. New crank and various strengthened engine internals. FMIC which meant moving the rad and re-plumbing the aircon. Uprated clutch and brakes...and so the list went on. His main problem was the excess heat from the turbo..never really solved. He wished in the end he hadn't done the conversion, reckoned it was a good project that spoiled a good car.
 
You didn't read the blog. I did. Don't comment if you don't know. Turbo/supercharging a normally aspirated motor is a complete rebuild thats why that crowd charge $5k for it. If you look at the amount of work involved, head work. pistons etc then it validates my point. Once its been rebuilt it needs a new or re-mapped ECU and a rolling road check for fuelling. Then we talk about more cost with the brake / clutch / suspension upgrades to cope with the extra power.

When you've finished its not an MX5. Cheaper and simpler/more reliable to either buy a production turbo car in the first place and fiddle with boost/intercoolers etc or buy a Honda S2000.

This sort of post smacks of Max Power: 'I gotta Corza with a bodykit an I wanna turbo it..do Halfrauds stock bolt on turbo's?' BTW the UK company (can't remember their name) stopped offering official Mazda turbo kits for the MX5 due to overheating and melting pistons.

MX5 is fine as it is. Fun low powered car for those who don't track day or hair stylists.
 
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Turbo/supercharging a normally aspirated motor is a complete rebuild

No true ;)

BTW the UK company (can't remember their name) stopped offering official Mazda turbo kits for the MX5 due to overheating and melting pistons.


BBR not sure they stopped for that reason though... :confused:

A few complete bolt on kits available for them still now.. and quite a few force charged ones around... Even a tidy one on ebay at the moment ;)
 
The 'bolt on kits' offered on ebay? Useless. Forced induction on a unmodified non-turbo car will work fine, for a while until the piston rings go. Over compression, overheating and pre-ignition along with a completely screwed lean fuel/air mixture that will burn holes in your pistons.
 
The 'bolt on kits' offered on ebay? Useless. Forced induction on a unmodified non-turbo car will work fine, for a while until the piston rings go. Over compression, overheating and pre-ignition along with a completely screwed lean fuel/air mixture that will burn holes in your pistons.


Ok I didn't say unmodified, but I would hardly call a De-comp plate or new pistons a full rebuild now would you? :confused:

and bolt on i mean these
http://www.mx5mad.com/product_info.php?cPath=26_36&products_id=215

http://www.grahamgoode.com/website/parts.php?website=16&item=11540001

etc etc... ;)
 
In practice car makers make the parts 'strong enough' to do a particular job. So new pistons is a strip down job and wise persons replace all the whirly bits with stronger forged internals at the same time as the extra stress is distributed through the engine. The ECU will definately need to be changed / remapped and a rolling road done to check fuelling.

Not saying you can't do it. if you have the money. But the end result with new brakes/suspension/and clutch doesn't make it very economic.

Your man in the links is charging you half the value of the car to do an engine upgrade. No mention of the other bits that need changing.
 
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Surely you wouldn't even be thinking about it if the words economic played any part in it? :confused:

Wise persons? So none of the people who have turbo'd say a cento for instance are wise? As i can't think of anyone who has bothered with much more than changing the pistons.. and to no ill affect..

Totally agree on the ECU but though that was given point.

I would imagine you would probabaly ring and speak to them before just ordering..

And the cost Iw ouldn't say is excessive for the parts needed..

At the end of it all it comes down to individuals choice if they spend the money on forced induction but I think they should be told the right information..
 
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Suggest you check with a few professional engine rebuilders regarding the amount of work that needs doing for a longish lasting upgrade. Its possible to do it 'cheaply' but the engine will die in the short term. The least is pistons, head work and clutch. Uprated oil pump, probably bigger fuel injectors and a bigger fuel pump.

Been there done this when I took a 220Hp Turbo coupe up to 350Hp. The list of work was huge if I wanted it to last more than 10k miles.
 
Sorry. Not much of a fan of MX5's but I do like S2000's (apart from their lethal wet weather handling..)
 
If we did we would never have things like this.

061505_1j-798193.jpg

or
techart_new911turbo_01.jpg

or even this
 

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And (flying banana excepted) plug ugly. Whoever did the wheels on the Porsche needs a pensioners pass to SpecSavers...:p
 
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