Vehicle Owner

Member ID: mattsterRX7

Location: Grand Rapids, MI

Vehicle Info

1986 Mazda RX-7

Bragging Rights

  • 1/4 Mile0 sec @ -1 mph
  • 0-600sec
  • Top Speed-1mph
  • HP325
  • Weight2800lbs

Major Upgrades

  • turbo
  • nitrous
  • bore increase
  • port and polish
  • supercharger
  • extrude honed
  • stroke increase
  • engine swap

Ratings

    • Currently 3.3/5 Stars.

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Last updated: Jun 18, 2009

Hits: 97,338

Matt’s Mazda RX-7

  • Currently 3.3222222222222 /5 Stars.
49 guestbook comments

Page 01: Introduction
Page 02: White RX7
Page 03: Green RX7
Page 04: Engine
Page 05: Let the fun begin!
Page 06: Engine bay work
Page 07: The V8 drop-in
Page 08: IT'S ALIVE!!!
Page 09: Clutch & Radiator
Page 10: Driveshaft & Exhaust
Page 11: RX Unleashed
Page 12: Dyno and Weigh-in
Page 13: Alternator, Fans, Gauges
Page 14: SUSPENSION!
Page 15: Seven Not Stock, 2006
Page 16: Paint & Quarter Mile
Page 17: Saying Goodbye
Page 18: Conclusion.

Choosing the engine and transmission for the project is very important and therefore a really tough decision for me. For this particular swap there are many different choices of which engine/transmission, ranging from ford to chevy, small block to big block, carbureted to fuel injected, automatic to 6 speed. Basically if you think it's better than a rotary, you can put it in the enormous RX-7 engine bay. For me, two things were important, I wanted a fuel injected engine for reliability and fuel economy, and a manual transmission because I love the control and sporty feel... and plus the ladies love it. The first possibility I considered was a ford 302 CI(5.0L)/T-5 combination. This combination is easy to come by and quite cheap. However it also has some disadvantages including incorrect shifter location, low(er) HP ratings, and less RX-7 swap documentation. My second choice was a 350 CI (5.7L) Chevy LT1 V8. This engine when coupled with a T-56 6 speed transmission literally fits like it�s from the factory. It is much more powerful than the 5.0 but bears the burden of the price tag. Even though this project was under an extremely low budget, I decided to start searching for an LT1.

mattsterRX7's 1986 Mazda RX-7

This is mine! It's from a 1994 Chevy Camaro Z28 and is coupled with a T-56 6-speed manual transmission. It also came with the wiring harness, engine computer, accesories, alternator, and driveshaft. This particular find was a eBay auction in which I bought the whole package for $1200. In my opinion this is an incredible deal... even with over 100,000 miles. Generally I have noticed that these types of LT-1 combos cost anywhere from $1800-$2500. Shipping cost from Indiana to Washington was $340, through CON-WAY, and included a huge company discount.

mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7

The engine arrive nicely crated, but badly leaking oil. I was forewarned about the oil leak by the seller, it turned out to be just as he claimed... only a small slash in the pan itself, this was inflicted when the engine was being removed. The engine looked really great, it was showing it's age a little bit with some rust and alluminum corrosion. The tranny is in great condition, the seller left the slave cylinder which will be used down the line.

My plan was for the motor to stay near-stock, I really didn't have a whole ton of money to throw into mods considering my budget. I decided that I would run only the essentials for this car, that meant I was to say good by to comforts such as power steering and AC, but on a positive not running only an alternator frees up a lot of free horsepower. I also decided, that the majority of the emissions stuff was to be removed or blocked off as well, I don't feel like messing with it all and we don't have emissions testing in my hometown (don't tell).

mattsterRX7's 1986 Mazda RX-7

Feels just right� Probably the happiest guy in the world!

Guestbook

Displaying entries 1-5 of 49

Pivotto  

Posted by: Pivotto

08/22/2009 01:52PM

I am super excited to see how you're 3rd Gen. comes along, good luck man.

jmiller18  

Posted by: jmiller18

06/15/2008 11:45PM

DUDE HELP ME OUT. YOu seem very intelligent about this. I have a V8 myself and am looking to get some better times. Im only running a 14.32 at 103 and i cant get any better but the mods prove to be around 400hp at the crank. Shoot some ideas my way please and thanks.

dough957  

Posted by: dough957

06/03/2008 10:05PM

hey man whats up with u...most peoples pages just have stupid useless wording that waste your time, but i just read like 15 pages n every bit was worth it---u did a hell of a job on that rx7, i found your page by searching lt1 motor swap in the lil search engine thing--- what are some pointers i need to know? i already pulled the huge ass 472 out of the caddy, i wanna do a ls1 or lt1 swap i know it's lighter and gonna have more horse power, but i think the lt1 is gonna b easier to find because it's a zillion bubble caprices and impalas in the dc,md,va area---can you kinda give me a run down of what i have to do to make it work

92purplebubble  

Posted by: 92purplebubble

04/07/2008 07:53PM

Very nice i was thinking about doing this setup but the car rides good and motor is still good but when itt goes trust me ill drop a 421 carburated v8 with a turbo 400 and a 5500 stall

GordiniRX7  

Posted by: GordiniRX7

03/25/2008 08:22PM

Dude both your cars are bitchin'!
I cant wait to see your FD done!!!
Nominated for showoff!!!
take a look at my fc ant tell me what you think about my plans,after all, Im only 15

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Vehicle Owner

Member ID: mattsterRX7

Location: Grand Rapids, MI