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Vehicle Owner

Member ID: RX5man

Location: Western Australia, AU

Vehicle Info

1977 Mazda RX-5

Bragging Rights

  • 1/4 Mile11.7 sec @ 119 mph
  • 0-603 sec
  • HP316
  • Weight2513 lbs

Major Upgrades

  • turbo
  • port and polish

Modifications

Performance Parts

Ratings

    • Currently 3.5/5 Stars.

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Last updated: Jul 05, 2007

Hits: 14,107

cd’s Mazda RX-5

  • Currently 3.5/5 Stars.
9 guestbook comments

Purchased as a stock brown 13b RX5, it has been modified over the years from standard to a 13b extend port, to 13b bridge port, to currently having for the last 9 years a 13b turbo conversion from a Mazda RX7. During that time it's been modified to be a fast & reliable 11 second street car. The current engine was built in 1999 and has always put out over 300 rear wheel horsepower.

The RX5 ran its best time of 11.71 recently which you can view below. As we found out on the day it still had a few issues to sort out as it had hesistant 3rd gear acceleration due to a rich tune and dirty plugs. I had been driving the RX5 as a daily every day for the previous 3 months. The 11.71 was run on a safe 14psi without the transbrake.

RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 11RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 12
It now has a Garrett T04Z turbo replacing the TA45.
A new 3 inch Rotaflow exhaust system and Malpassi fuel regulator.
Mazda RX8 seats have also been installed replacing the standard RX5 seats. The drivers seat retains its full electrics.
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 17RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 14
Matching RX8 rear seats are currently being fitted to the RX5. While its always been possible to fit 3 adults in the back uncomfortably, it will now be a comfortable 2+2 seater.

RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 145


A B&M Pro-Stick has replaced the B&M Quicksilver shifter. The previous Jatco 3N71b auto transmission which had a shift kit and modified valve body was in the car 10 years and is still in excellent working condition. But it has been replaced with another 3-speed Jatco 3N71b. Though this one is a tough, fully race prepped full manual auto with all the fruit including transbrake capability which is now hooked up to the red button on the gearknob and works well. The transbrake by itself will cut 1/4 mile times by 1/2 a second. Shifts between gears are more responsive, firmer and faster.

RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 146


Ignition problems have been sorted and it now revs cleanly all the way and over 8000rpm. It has now been tuned to 14psi for street/drag duties using street fuel and makes 300rwhp on the dyno using 3rd gear. The traditional 2nd gear powerrun isnt possible because it just smokes the tyres on the dyno rollers. If it was, it would show 330+rwhp.
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 9RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 10
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 15RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 16


13b turbo series 4 RX7 engine, extend port, dowelled, 3mm hurley seals, 4x extra injectors
Garrett T04Z turbo, 1.00 exhaust housing
Full manual race prepped Jatco 3 speed auto with transbrake, 4K Dominator convertor, transcooler, B&M Pro-Stick shifter with transbrake button.
Exhaust is now full 3 inch mandrel with 2 resonators, one a Rotaflow resonator and Rotoflow exhaust
62mm Greddy extrernal wastegate with screampipe, Type R BOV
Micks Metalcraft custom made front mounted intercooler, 3 inch stainless steel piping
PWR aluminium radiator
Turbosmart boost controller, low/high in-cabin dash switch
Microtech MTX8(upgraded), Microtech turbo timer, Microtech Dash
2x600hp fuel pumps, 2x 1/2 inch fuel lines, surge tank
Polished B45 Simmons wheels
2 Pak Black
Weight - 1160kg, 1240kg with driver
300rwhp @ 14psi on street fuel BP ultimate, 3rd gear powerrun.

Performance:
Best 1/4 - 11.71 T04Z turbo
0-100kph in 3 seconds
0-150kph in 7 seconds
0-192kph in 11.7 seconds

RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 1RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 4
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 2RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 6
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 3RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 5
RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 7RX5man's 1977 Mazda RX-5 Western Australia, AU Customized with Custom Exhaust, K&N Intake - 8

Interested in the buildup of this RX5 right from the beginning?
Read on to page 2

My website - Mazda RX5 Cosmo Central

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Vehicle Owner

Member ID: RX5man

Location: Western Australia, AU