So I've recently purchased an 86 Sport with just under 75k miles. It will become my dedicated HPDE car so it's important nothing spews all over the track or it dies a terrible flaming death at the track. What items have I forgotten about that I should check/replace?

Fluids (replace)
- Engine Oil
- Transmission Oil
- Rear Differential Oil
- Brake Fluid
- Clutch Fluid
- Engine Coolant

Filters (replace)
- Oil Filter
- Air Filter

Belts (check/replace)

Hoses (check/replace)
- Coolant Hoses
- Fuel Lines
- Vacuum Lines

Spark Plugs
Spark Plug Wires
Thermostat
Battery (check water level)
Injectors (flow tested/cleaned)
Brake Pads and Rotor (check for thickness)

 

Pulsation dampener.

Edit: Let me clarify. I'd probably replace it if you're concerned with safety. After 21 years it's probably time.

 

Just remembered I should also change out the Oxygen Sensor.

 

Unless you're just cruising, the oxygen sensor is out of the loop.
If you're not getting an error code, it's OK.

Also flush the brake and clutch fluid - just bleed it until it comes clear.

These trannies love synthetic gear oil.

FWIW rotaries eat steel plugs.
Go with platinums, especially for the leading plugs.

-Bill

 

fuel filter
seafoam the engine
IMO remove the pd
replace any cracked fuel lines
check convertors to make sure they are not plugged (or remove if u dont have emissions)
wheel bearings
tie ends
ball joints
check tires rotate and balance

 

Doh had fuel filter written down on my paper list but ended up typing air filter which wasn't on my paper list.

 

I also want to add radiator cap replacement to the list.

 

When you check the coolant hoses remember to replace the heater hoses. The hose under the oil pressure sender is probably ready to go and dump coolant under your tires (ask me how I know - and the guy behind me never had a chance).

Also the water hose going to the intake manifold is likely to be on it's way out. Unfortunately you need to remove the upper intake to get at that hose. You can short circuit or plug that hose if you are removing all the emissions equipment.

Make sure that the undertray is still installed. (standard cooling system health requirement)


And don't forget to install some "rear toe steer eliminators". Those bushings were acceptable on the street when the car was new and they are barely acceptable on the street now but they were never acceptable for the track.

 

I like the rear toe steer bushings.. I will not elim mine

 

Where is the best place (i.e. price/quality) to get what I'm assuming are application specific shaped coolant hoses that attach to the engine?

 

Replace the PD with a newer one. I wouldn't go for a new stock unit. It is going to die again.

There is a write up on how to replace it with a newer unit here:
https://www.rx7club.com/2nd-gen-archive-72/marren-fuel-injection-fpd-retrofit-writeup-356838/

That thread shows how to replace the PD with a newer Marren unit. If you are going to do it..... do it right.

 

I did the removal mod on my pd I think it worked just fine...

I can get the hoses for you.. otherwise mazda or maybe online.