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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Grassroots Motorsports challenge car

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Old Apr 11, 2007 | 04:14 PM
  #21  
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Yeah, wish they didn't want an arm and a leg for that and the butterfly, I would have one.
Using some relatively heavy guage sheetmetal it would be easy with a large press break. Could make them bolt on as well.
Now where's that darn thread he had on them.
Old Apr 11, 2007 | 04:20 PM
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ive heard the butterfly is hard to notice compared to just the rails....plus it's makes it a bitch to just pull the exhaust whenever you need to, not to mention get in the way.
Old Apr 11, 2007 | 05:05 PM
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I’ve been reading up on megasquirt but I don’t think I’m ready. It might be a good project for next year. Also I have access to a free beat up 1989 RX7 that had a blown engine and no transmission. I’m thinking about using the rear diff even tho it’s not a limited slip and maybe the injectors. Anything else I can use off the car?
Old Apr 11, 2007 | 05:35 PM
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I just installed the FM rails this past weekend. I can no longer feel the chassis flex when I enter/exit my driveway, other than that it feels the same as before.
Old Apr 11, 2007 | 06:40 PM
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Originally Posted by Pseudosport
I’ve been reading up on megasquirt but I don’t think I’m ready. It might be a good project for next year. Also I have access to a free beat up 1989 RX7 that had a blown engine and no transmission. I’m thinking about using the rear diff even tho it’s not a limited slip and maybe the injectors. Anything else I can use off the car?

if you're going FMU setup, dont bother with the injectors....look for 1.8L tan tops or supra 305s

the rear swap is easy...click the link in my sig for require parts. It's either a VLSD or open.
Old Apr 12, 2007 | 03:24 AM
  #26  
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yeah get the turbo, get a cheap sas intercooler, or cut the bottom section off the oil cooler from the bottom of a junkyard radiator and get a buddy to make a coil to make a water to air intercooler. get a cheap pump and wire it to your ignition, either that or go with water injection. take out the carpet and trunk liner and take the top off, take out the passenger seat. remove smog junk, and take off the ac, modify the powersteering so you can get rid of the pump. upgrade your tires, upgrade to the 1.8 brakes from a junkyard miata.
Old Apr 12, 2007 | 10:40 AM
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DIY water injection would probably be much cheaper than IC. Browse the net, I've seen some WI systems homebuilt for about $150. Not pretty, but it would do the job @ GRMC
Old Apr 12, 2007 | 10:57 AM
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as much as it would be cool to dump in a shitload on the turbo...i think a good combo would just be a cheapass used greddy with 1.8l injectors run to about 6-8psi (about 170rwhp)

then spend the rest on tires and suspension and lightweight and braces
Old Apr 12, 2007 | 04:26 PM
  #29  
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actually all you really need are those lightweight lugnuts from flyin miata. i heard that on a stock miata those things made it beat a ferrari!!!!!!


spend the rest on beer when you win!
Old Apr 12, 2007 | 04:28 PM
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are you being a smartass.....
Old Apr 12, 2007 | 06:12 PM
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Originally Posted by Braineack
are you being a smartass?.....
Is that a rhetorical question?
Old Apr 13, 2007 | 02:19 AM
  #32  
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no no man they are good for at least 50-60HP! trust me i know a guy who knows a guy who put em on.
Old Apr 15, 2007 | 05:36 PM
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Just got the thing home and it looks like I have a lot of work ahead of me just to make the thing drivable. The brakes are junk, coils springs are broken, struts are unhappy, and the clutch will slip if given any throttle.
Attached Thumbnails Grassroots Motorsports challenge car-img_2634.jpg  
Old Apr 15, 2007 | 05:38 PM
  #34  
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BUT it has a hardtop.
How much did you score that for all said and done?
Old Apr 15, 2007 | 05:47 PM
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Originally Posted by cjernigan
BUT it has a hardtop.
I was going to say the same thing.

I'm also interested in how much he paid for it
Old Apr 15, 2007 | 05:50 PM
  #36  
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take out the soft top, for 50 lbs wieght savings and sell it to offset the cost in good shape it could bring 30 bucks. or sell the HT and ST HT could bring 500 or more. but i like the HT and it does help in the handling dept.
Old Apr 15, 2007 | 06:04 PM
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$500 and I drove it home.
Old Apr 15, 2007 | 06:12 PM
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sell the hardtop and the car will cost negative $300
Old Apr 15, 2007 | 06:17 PM
  #39  
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yes remove both and then offset the whole pruchase price with the sale of the tops, airbags and other stuff.
Old Apr 15, 2007 | 06:28 PM
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Wish i could find a car that cheap with a hardtop. FREE HARDTOP upon resale.



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