Hey everybody!

Alright I am new to this site and to rx7's for the most part, and am looking at buying one very soon.

I just have some questions about them.

I have heard that you can't install aftermarket blow off valves on the turbo II's, from a friend who has one, is this true? Can it be done or does it require intake manifold modification like he said...?

The car I am looking at is an 88 Turbo II and has a japaneese engine in it. What are the figures for horsepower for the japaneese spec engine for the turbo II's, does anybody know?

And are mods for these car's relatively available and fair in price?
And what are the best for quick power upgrades?

Thanks

kleetuz

 

kleetuz,

Welcome to the forum.

The stock BOV works pretty well, but I'm assuming if your going aftermarket you have other mods planned as well correct?

The J-spec engines have the same HP they were just tuned to work with Japan's higher octane gas and have less emmission sensors/controls on them.

The 2-rotor engines can handle 350-450 more more HP, but you need to modify them correctly so you don't run lean and destroy the engine. Keeping the air/fuel mixture correct or slightly rich through the entire power band/rpm range and boost levels is very important.

Beyond the below staged HP upgrades, you have a TON of bodykit options, light kits, accessories, and OEM upgrades to customize the look of the car.

The 2nd gen rx-7s are divided into the 86-88 and 89-92 years. The latter years had more OEM HP and the earlier years had a bit more engine lifespan before a rebuild was needed.

Power upgrades can be grouped into "staged" upgrades for ez budgeting. I think rx7.com still has the "staged" upgrade lists.

The main

Stage 1 is usually perf. exhaust, perf. catalytic converter, perf. air intake, cold air box, larger downpipe (best HP gain), fresh air headlight scoop, aftermarket ignition sytem & perf. spark plug wires (stronger spark) and most important - gagues including boost, air/fuel, exhaust temp, and cooland temp. This will net you 220-230 FWHP depending on the year of the car.

Keep in mind stage 1 will run the boost slightly above OEM, so you might want to get a fuel defender (think that's what it's called) and / or boost controller if your concerend about engine longevity.

Stage II is usually FMIC (front mount intercooler), larger fuel injectors, upgraded fuel pump, and boost & fuel cut defeats. It's even more important now you control boost & supply appropriate fuel to keep the engine from running lean. This will net you 230-260FWHP. You can also do lighter flywheels, and other racing parts in stage 2 or 3.

Stage III is usually an aftermarket engine mangement system, street port, larger turbo, 3rd set of injectors, aftermarket fuel railes, blow off valve, pop off valve, etc... This will net you 350-450 or more Rear Wheel HP.

 

A few engine shots, some OEM rx-7s, and some bodykit pictures for ya:


Supercharger:


OEM:

 

you can use aftermarket bov's without modifying anything. each co. sells kits with a little pipe to take place of the stock one.

 

 

Here's a few of the TONS of bodykits:








This is a 3 rotor engine (vs normal 2)

 

 

"vaughnc" is our online rx-7 salesman here. the way he posts all the pictures....you know he's paid comission only.

 

This must be my 15 minutes of fame! The pic of the red stock T2 engine bay is my car taken before I bought it! It looks alot different now =)...

-Brian

 

What body kit is the black car with the 16 spoke rims?
Who makes that body kit?

 

The name of the kit is Maztech, do a search on them in yahoo aus.