ok... before mugatu runs in and tears my head off, i DID search, a lot, but i didnt find the answer to my specific question

i have the turbo kit en route, and thus is the end of my warranty.
-besides responsible driving and all that, is there anything you guys would reccomend i buy/install on my 8 that would improve on the reliability of the motor to negate the stress the turbo will cause?
-keep in mind, i will just be running it at 5-7 psi max.

oh yeah another question. why doesnt the kit include a blow-off valve?? you figure it'd be needed right away

thanks everyone.

 

Oil catch tank, blow-off valve, lots of sensors and meters, turbo-timer, three-layer radiator, ventilated hood, intercooler water spray.

 

intercepter x... a good tuner that know rotorys.... and read all threads about the greedy turbo..

that should cover it.. pray your car does not have the r flash... if you dont know what that is you need to start reading...

beers

 

I've never quite understood what the problem is with having r flash and the turbo

 

Greddy tuned to piggyback M, N was not a major change, R ran much richer, hence the problem. MD and MM's P2 fix eliminates the issue.

 

It's my understanding that the blow-off valve is for protecting the turbo and not necessarily the engine.

 

Naww. Its so you can go "pooOOOSSSSSSSSHHHHHHhhhhh!"

 

This is my reccomendation for what you should use

Greddy Turbo Kit
Greddy Type RS BOV w/ adapter plate
DO all the mazdamaniac fixes ATLEAST the first 2
If your on R flash do #3 also
if you plan on boosting 7+ PSI buy 490cc p2's
Possibly a boost controller if your budget permits
Buy a case of royal purple 5w20
Emanage Support tool, if you plan on doing any of your own tuning
Innovate LC-1 WB 02 (if you plan on tuning)

GET IT PROFESSIONALLY TUNED IF YOU DONT KNOW WHAT YOU ARE DOING!

Happy boosting!

 

I would go water/methanol injection. Keeps your motor cool and safely bumps up the octane rating to avoid detonation. Iv'e also heard it cleans your motor out via steaming the rotor housing.

 

Out of all of these replies I find it hard to believe nobody mentioned probably the most IMPORTANT Engine Life preserving item:

Increased Oil Capacity Metering PUMP: http://racingbeat.com/FRmazda4.htm

RX-8 Metering Oil Pump Modification (Flow Capacity Increase)

The Metering Oil Pump (MOP) supplies lubrication oil through fittings in the rotor housings to the rotor seals to reduce wear and improve sealing. Operation of the pump is controlled by the PCM (Powertrain Control Module), which adjusts the MOP flow based on engine RPM and volumetric efficiency (load). This is accomplished by a "stepper" positioning motor on the MOP which positions an internal cam to one of the 60 positions (steps) based on a map of values in the PCM.

In a stock RX-8, the pump already runs at maximum flow at the high load/high RPM portion of the map. Thus, the only way to increase flow (for supercharged/turbocharged applications and racing) is to change the piston capacity of the pump.

Racing Beat offers a service to modify your stock metering oil pump to allow it to flow up to 31% more oil at the "60" step. (See a larger photo of the pump assembly on our test bench) By changing only the diameter of the larger piston (there are 2 pistons - a large and a small) the flow rate at idle and light throttle/low RPM is unchanged (at the lower steps the pump runs only on the small piston). Then, as RPM & load increase, so does oil flow, providing the necessary lubrication for high load/high RPM.

This means that, when using this modification in street applications, there is little change in oil consumption up through cruise power - but extra flow is there at higher RPM and load when you need it!

This modification is ONLY intended for boosted engines or those engaged in continued hard use (road racing, etc.). Mazda has established the correct flow for the stock engine in street use. This modification is only performed on pumps that are in good mechanical condition and operating properly, and we flow test every pump to prove performance before delivery. Modification time is one week or less.

 

I have not seen the recommendation for one step colder plugs, yet. Very healthy.


I disagree somewhat with the recommendation 5w20 especially for summer. You might want a step thicker, but that is argueable

 

I went to a professional place and had it installed, they did an excellent job... besides all my moderate after-market products, to go along with the GReddy Turbo Kit, Turbo Timer & adapter plate, Boost Controller, Plug in Emanage to help with the fuel, Blow off Valve and the necessary tuning including the flash and the works... Most importantly you have to change oils... Royal Purple is the way to go because most other oils might give you a little problem.... but VarneyMazda seems to know what he's talking about.... I haven't had a problem yet, no CEL and i'm almost have about 39K on my 8.... Good Luck

 

Yeah, I would go with 5W30 if you are turboing your engine. Also a set of plugs 1 heat range colder will help prevent detonation.

 

so with turbo, change out to 9 on all 4 plugs?

 

The 2 most important things are to keep temps down (coolant, oil, intake) and to prevent detonation.

Here's my recommendations to increase engine reliability in order of importance based on things I have personally done and found to work well.

At base boost setting of 5-7psi:
1. Get a good tune
2. Wideband O2
3. Boost gauge
4. Interceptor EMS
5. Synthetic oil 5w-30 or 20w-50
6. Relocate air filter
7. Ceramic coat or wrap turbo, manifold and downpipe.
8. Upgrade radiator
9. Change coolant mix in summer to 60/40 water/coolant


If you're going to increase the boost you should also
1. Get colder plugs
2. Get a more free flowing cat and cat-back, not just for performance, its actually better for the engine.

Adding another oil cooler, and getting an upgraded fuel pump are also good ideas, but I have not personally upgraded them yet.