Jorsher

Well, like he was saying, the traction control will make the mixture go rich if it senses the rear wheels moving more than the front, so maybe that's why they didn't dyno well or smelled like ----. Either way, yeah they don't dyno what the factory says. Despite the homo that miatas scream, I wouldn't mind an older one if I could find one in decent shape and decent price. An LSx swap would be nuts if it wasn't too big of a PITA, or the regular engine boosted would still be fun.

RotaryGeek

ah i love the rotay debate. if you dont like them, ok. if you do like them great. any way you look at it, it doesnt matter what you think till you have driven them. they are alot like an EF in that you hate it for all the flaws, but when you sell it you miss it, and when you get back in one you remember why you bothered with them at all. there not cheap, they arent as easy to make power, and they arent (debateable, but only by someone who actually keeps up with the maintanance) reliable. but there is a cult following of the rotary for a reason. as i said before, its a thinking mans engine. if you know what your doing, its an awesome engine, doesnt really matter what platform its in (but it does help not being an rx, it will go and be much more fun than a piston engine.

kain

yeah. like i was saying, the numbers have been all over the place. there have been people report sub 100 numbers, sub 200 numbers, and even sub 250 numbers.

the driveline saps up a ton of power.

when the first 2nd gen came out with 160 hp, it only would make like 120 at the wheels.

BigD

That looks like it should be the new bat mobile. Oh yeah the new bat man comes out in July woot

gon3r

it looks like a running shoe.

krustindumm

hmmmm

i'm installing a turbo on one tomorrow night, maybe I should post a video of the test drive.

kain

what turbo is it?

Aaron Cake

The RX-9 is nothing more then an Internet rumour. If Mazda every did make a new RX-7, it would still be called an RX-7. And I don't have a lot of hope for a new RX-7 anytime soon.

That would be 16X. An experimental direct injection version of the Renesis.

What's wrong with standalones? You'll find almost every high horsepower rotary running either a Haltech, Microtech, Motec (Motec is gaining ground these days), Tec, Megasquirt, etc. Fuel and ignition control are critical and these can only come from a full standalone. Personally I run a Microtech LT8s.

Out of a 1.3 litre, 280 HP is pretty good. The old twin turbo REW made 255, then was upped to 280 late in the production run.

Keep in mind that production engines must do things like give good mileage and burn clean. As odd as it sounds, generally tis means running richer then it would be tuned for in a performance application. While this keeps NOX low and keeps the cats happy, it costs power.

"Continuously" is a bit of an exaggeration. The rotary needs oil to lubricate the apex seals. This oil is supplied by the metering oil pump and burned as part of the combustion process. The older mechanical style pumps would burn abou 1 quart every thousand miles. The newer electronic pumps (which the RX-8 uses) have cut this dramatically to the point where you top up every 3000 miles. It's not that big of a deal.

It's called a "metering oil pump".

The mechanical metering oil pumps just don't fail.

The electrical pumps will fail occasionally, but the ECU will put the engine into limp mode to protect it until the pump is fixed.

'88 RX-7s were still using mechanical metering oil pumps. The switch to electronic happened in '89.

The electronic pumps are slightly less reliable then the mechanical pumps, and occasionally they will fail like any other part. However on the whole, they are very reliable.

The S4 TII made 180 HP. The S5 was 200. A 180HP RX-8 is a lot slower then a 200HP RX-7 due to weight.

Nothing to do with bad metering oil pumps. Without going through the whole story, Mazda screwed up on the firmware. The first software would flood the engine, so they leaned it out. The 2nd would kill cats as it was too lean, so they richened it up under cruise. Which cost power and caused other issues. They have no released several different firmware versions and the problem is basically fixed but the engine is still downrated in power from the original literature. I think they are ECU version "M", but can't remember for sure.

Mazda dominated almost every form of sports car racing in the 80s and 90s thanks to the RX-7. They also won LeMans outright in 1990. RX-7s are well built cars, very solid and overbuilt. They are highly reliable when maintained and respond well to high power setups.

Statements that they are junk are ignorant and just plain wrong.

S4 NA = 146HP
S4 TII = 180HP
S5 NA = 165HP (or 160HP, I forget)
S5 TII = 200HP

krustindumm

Greddy kit. Didn't quite get it done last night. It's a ------- tight fit. Got the E-manage Ultimate installed, turbo & oil lines installed, and about 3/4 done on the intercooler & charge pipes. Need to put in the down pipe, intake pipe, and reinstall all of the factory ----. This dude is loaded, it's an '07 RX8, he's had it for a year, and it has like 1900 miles on it (and an Agency Power exhaust).

I guess the guy's brother found out he got the turbo setup and ordered a bigger turbo kit for his RX8 and wants us to install that also.

kain

arron, what made you migrate over from the soft side at rx7club to the harsh side of the internet such as homemadeturbo?