Suds

How many of you plan on swapping in a Renesis? Sooo much horsepower 250hp 150ft/lb torque 10000 rpm redline, 12500 can be reached. Probably easily modified, larger ports etc. Hopefully not too much modification to install, gods gift to n/a Second Gens. They better offer them as crates!

rico05

HAHAHAHAHAHA!!!! Very funny. Tell me this is a joke? So much work it wouldn't be worth the effort, IMO. Do a search, this has been talked about before.

Suds

Damn! You have banished my pipe dreams!

Herm.. I know I should search but, why so much effort?

rico05

Because it has never been done. Ok, think of how hard it would be to install an engine never designed to fit into a FC. Then, meet up w/ a tranny never intended for your car. Next, custom driveshaft. How about steering? What happens if the steering shaft no longer fits around the new engine? Fuel lines? Cooling? It is just not pratical. There are places to get kits for a V8 or GNX engine as well as for a 13B-REW and 20B. But no one has figured out if the Renesis will even fit into an FC yet. Plus, you know how much new engines cost from the dealer? Try $8k easy.

Flobb

Another example you could have used is the going rate for having a 20b installed. It's been done many times and the knowledge is available. Yet to have it done at a top name rotary shop will cost $30,000 - 40,000.

SureShot

I really expect that the renesis engine gets as much HP as can be had from the NA 1.3 twin rotor. If you really look at the cutaways, you'll see 2 throttle bodies, two separate induction systems, 4 side exhaust ports, and I think I see a 4 port exhaust header (no detune collector box). This thing is already ported to the max..
Excerpt from 1-8-02 press release:
It features a side-intake, side-exhaust layout, with the exhaust ports moved to the side housing of the rotor chamber. This allows the size of the ports to be freely set, resulting in an expanded air-intake port area which is 30 percent larger than in conventional rotary engines. This greatly improves intake resistance and contributes to an output of 250 hp at 8,500 rpm and maximum torque of 162 lb-ft at 7,500 rpm without having to rely on a turbo- or supercharger.
In addition, the adoption of dual exhaust ports for each chamber achieves >> twice << the port area of conventional designs and also allows exhaust port timing to be delayed for increased thermal efficiency in the expansion process. Unburned hydrocarbons are retained for combustion in the next cycle, which greatly reduces emissions. A three-stage induction system, featuring shutter valves at the intake ports of each rotor, utilizes the incoming airs dynamic charge effect and improves filling efficiency, while twin electronic throttles precisely and flexibly control the valve operation. Furthermore, a wet-sump lubrication system with oil-panheight just half that of conventional designs also reduces engine height and weight.

SureShot

Well -- Maybe a Renesis with shot of nitrous would be fun..
Bill

rico05

Ok, SureShot, I had a hard time understanding what you were saying. It makes 250hp, way more than any streetable 13B n/a could make. The Renesis is an awesome engine, but it is just a bad idea to try and install it. If you want big n/a power, go 20B.

SureShot

Yeah, It's an interesting dream, but converting an 80's car to 21st century fly-by-wire power may be impossible.
BTW have you seen the Mazda press about using the RX-8 platform for future 2-seat cars? (If the RX-8 does well)

rico05

Well, our engines aren't really low tech. I wasn't aware that the RX-8 was fly by wire.

Suds

Yeah, I have read that the rx-8 is fly-by-wire in a press release somewhere.

As for buying an engine from a car dealer? No, buy it from mazdaspeed (btw check mazdaspeed.com in the fall its back!) it will be cheaper (if it is even offered), and all the dealers are cut out of performance parts. Was just asking them a week ago if they will get mazdaspeed parts, and they said no.

SureShot

As in electric throttles and 6-ports.

deadRX7Conv

As in--electronic gas pedal(ecu controls everything) just like the volume control in your stereo. There shouldn't be any issue with the conversion. But, you must use everything that the car came with: wires/ecus/sensors....... more like a real PITA--not a bad idea! Definitely not in my budget.

The real question should be "WHO WILL BE THE FIRST?"

Even though I own a '91, I would love to see the Renesis in a RX3, FB.......

Does anyone know if it is still an iron/aluminum sandwich or did it finally go all aluminum housings?

Mazda offering a crate engine(ecu/intake and all)--it will never happen(I hope that I can eat those words)

Save your money for when all the rich teenagers wreck their RX8s.

FC Drifter

my shitty old tech engine makes power like i want it too, and i have a lot more room to improve. unless the RX-8 comes boosted i dont care too much for it.

scathcart

Lets see... These are my two current options for engine plans:

Swing in a 250 hp renesis.

or...

swing in a twin turbo, 800 hp, 14K rpm, all-aluminum, dual intermediate bearing, 3 piece eccentric shaft,dowel-pinned 3 rotor... and then add nitrous.

What would YOU choose?

lol

Funklord

the renesis is a huge step up as far as N/A engines go. the 13B made 160hp, if the REW was N/A it'd probbly be 175 maybe. then the renesis is 250. thats almost a 50% increase in power without changing the displacement. i'd like to see a turbocharged renesis. that would make some good numbers.

darkwaveboi

im with sean

kristopher_d

That has been my plan since I heard about the Renesis. Of course I plan to go forced induction on top of that (twin-screw sc, sorry turbo guys). Of course, we still have to wait for Mazda to release the damn thing, if they ever do. They've pushed it back almost a year now (oct '03 - feb '04).

TKE

Renesis + boost =

Cheers!

renesis.. N/A

i'm sure if u wait like 6 months after all the dust has settled there will be a few write ups documenting how to do it... and some places offerening kits to do it.

rico05

I would still rather do a 20B swap, as the two are most assuredly going to cost the same. I agree w/ Sean....After all he is my brother

SureShot

Pushing it back is bad news/good news. The bad news is they are finding problems. The good news is they are taking the (expensive) time to fix them..
Bill

gold87na

i would like to see the Renesis with some boost.. I guess if i wait 6mo or so i should see some dyno papers on a turbo 13B Renesis i'm guessing maybe 325 with a small turbo..? Does anyone know the specs on that motor? like compression? I would think that it is higher then 9.5 to get all that power.. hmmmm set that up for 2bar and be done..

scathcart

Smart guy are you!

We all know the renesis lacks low end ***** big time, hence, adding a twin-screw sc makes sense. Full boost all the time, so it makes gobs more power across the board, and really bumps up the lacking low end.

I completely agree with your choice.

Digi7ech

iTrader: (1)

I agree the SC will help, but that means you have to find one which will still amke power all the way until it drops off to get a good setup.

That means a SC that will go up to 8-9K.
Not familiar with twin screw so I don't know if their capable of that.