DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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Plotting my upgrade path

 
Old 08-20-2008, 10:00 PM
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Default Plotting my upgrade path

Hi guys. I picked up a 92 miata last week. (I missed my old 99 for the last five years) The car has 131k on it, a somewhat worn interior and original soft top + a handy factory hard top.

I'm planning to swap in a 6 speed, 1.8 rear end, larger brakes, new springs/shocks, new paint and refurb the interior as time goes by.

Here's the major question:
Right now, I'm trying to decide if I should even consider modding the 1.6. I'm more inclined to pick up a second engine and build it up on the stand while I enjoy the car.

If I go the spare engine route, should I pick up a 1.6 for ease or upgrade to a 1.8? The 1.6 is probably cheaper, but the 1.8 will be easier to find and ultimately make more power. I will definitely use a megasquirt for the ECU - diy electronics are pretty easy for me.

Any thoughts on doing individual throttle bodies? I'm already doing a diy EFI setup on my old motorcycle using a megasquirt and some yamaha R1 bodies. Is it worth the effort on a turbo'd engine?
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Old 08-20-2008, 10:13 PM
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The 1.6/1.8 question is hugely debateable. Which is right for you depends on your plans and power goals. In a sense the cheaper 1.6 is more disposable. However the 1.8 has more potential if peak power is your goal. However I would NOT sell the 1.6 short. It's proven to make big power too. It's just not as popular.
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Old 08-20-2008, 11:11 PM
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same as above. the 1.8 is a good power upgrade even if you leave it stock, and a kit like FM's is under $200 to put it in a 1.6 car. after that, boost will give you more peak power with the 1.8, but like Patsmx5 said, any little breakdown will be just a little more expensive, and the power differential won't be that big. also I think there's a lot more information and tech support off this site for the 1.6
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