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: 96,286

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.

I did a lot of research for my driveshaft back at school, it's a crucial part to this swap and so many dimensions had to be perfect. I began by buying an aluminum driveshaft from a C4 Corvette; this driveshaft measured 27.5� between the centers of the yokes. The rear flange is very important because it is what converts Chevy power into Mazda movement; it is built for a standard 1310 U-joint with the Mazda differential bolt pattern. These can be purchased from Granny�s Speed Shop, or from Rockford Driveline #R2-2-3173 (N/A rearend). The tranny yoke is stock. I was a little bit nervous that it wouldn�t fit, which would throw my whole summer off, but it ended up being PERFECT!

mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7

I was quoted $800 for a custom bent exhaust at a local shop, I decided that was too much, so my dad and I took on the project ourselves. We put the car up on two saw horses at the shop with a forklift and started taking some measurements. I wanted to use 2.5� pipe, but compromised with 2.25� pipe for clearance and because I was told that duals of this size supports 500 hp. We started at the headers and worked our way back, we built in an X-pipe which equalizes the pressure in the tubes and used the stock exhaust hangers for the setup. Turned out pretty good for a bunch of newbies! The headers are actually built for the S10 V8 conversion, the Summit part number is HED-69640. They are quite cheap at $135, and you get what you pay for... the flages are very thin and the primaries are a little small, but they will fit and the do get the job done!

mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7

For mufflers, I chose Magnaflow. When I first got them installed, I thought the car was WAY too quiet... probably because I was running straight pipes up to that point. But soon the tone grew on me, now adays I absolutely love it. But just in case, I insalled some exhaust cutouts which are insalled before the diff because this was where they fit best. They are not electric so you have to get under the car and unbolt them... but they sure sound great when they are open!

mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7


mattsterRX7's 1986 Mazda RX-7

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