rx8 20v turbo motor swap

[tinker-27]

hi guys i have started to fit a VAG 20v motor , i looked at lots of different types of engine and this one seems the best for the job. i didnt want to fit a v8 as its lots of work and to much money, the 20v is 210 bhp stock ( S3 / TT / cupra R ) but 260 is easy and 400 is doable , the later 2.0L motor is the same with more power avaliable. i am doing one for myself and one for a freind of mine ( wendle ) she has put a little post in the rx8 section but i thought i would post here as per v8 talk ( dont want to rock the boat to much ). i am using a adapter plate to the rx8 gearbox so i can use std rx clutch/starter etc i am having a bespoke flywheel made as well. not many pics yet but i will take more as i go along

[B.Martin]

Okay I\'m interested, the 20v turbo VAG lump is widely praised and I\'ve only heard good things. If you can keep the rwd platform and stuff you could be onto a really good thing there, I\'m interested so keep us updated.

(I don\'t approve the RE removal mind)

[tinker-27]

if it goes to plan it i will leave the rack / steering as stock not moving anything, std gearbox prop set up ,std rad,front mount intercooler, i hopefully will do a kit if people are interested but the wiring is a pain !!

[Grant Monkhouse]

Where does the engine sit in the car as to the position of the rotary?

As for wiring can you not keep the rx8 ecu in there and run a standalone just for the engine? Easier said than done but thinking simple is good.

How much heavier is the piston lump?

[oyvindjs]

so... basically.. what you are saying is, you are turning your Mazda RX8 into a Mazda 8?

Well, each to their own, it will be different for sure.
I cant help but ask why though, no critisism intended here.

[tinker-27]

its a small motor i should sit behind the rack ,not sure on the weight of the rotary as i did not weigh it before selling it , if anyone can tell me i can weigh the20v , i am looking into the wiring side of it

[antnicuk]

now that is very clever and i reckon if you could sort the wiring out as a kit,  you are onto a definite winner.  An RX8 with more power torque and fuel economy can only be a good thing.    keep us updated.

[B.Martin]

Well the rx8 engine is a bit naff, uneconomic and rather limited in terms of tuning without big expenditure. I don\'t feel as defensive with the rx8 as I do with the 7\'s, I think because the RX8 doesn\'t have the same iconic stature as the 7\'s, I\'m probably opening a can of worms almost as large as the 20v turbo conversion here.

I was trying to say what antnicuk just said.

[tinker-27]

i am doing it because its a good car but they are getting scrapped which is a shame  and more people buy these who are not rotary lovers but just like the car so want it reliable and on the road

[Grant Monkhouse]

I think this is great but not sure what would happen to the great characteristic handling of them with that engine in, buuut TBH most people including my self wouldn\'t be able to tell the difference in handling from either. Only downside I can see is that the 9500 rom tachometer will never get anywhere near those kind of rpms

[shaunwil]

Interesting conversion. Been seeing the bottom fall out of the RX8 market, which is a shame with it being a seriously capable car.

One freaky question running through my head would be would the 2lt TT diesel engine fit on the same adapter. Would make a very cool daily driver with a longer differential over a LPG Renesis.

Shaun

[Grant Monkhouse]

Interesting conversion. Been seeing the bottom fall out of the RX8 market, which is a shame with it being a seriously capable car.

One freaky question running through my head would be would the 2lt TT diesel engine fit on the same adapter. Would make a very cool daily driver with a longer differential over a LPG Renesis.

Shaun

Bottom of the barrel well and truly hit with this question lol

[tinker-27]

the rev range is the priblem on he tdi , and diff swaps are big money so untill a deisel revs to 7k its a no go really

[BlitzBoy]

are you going to change the final drive  ? as potentially the top speed may be lower then stock as the VAG petrol does not rev has high

[shaunwil]

Bottom of the barrel well and truly hit with this question lol

Don\'t Despair, its only a question. I have mad thoughts that don\'t really go anywhere :rolleyes:

I\'d be more likely LPG\'ing a RX8 renesis than swapping engine, but such an awesome driving car with 50mpg would be awesome too. Shame the sound would be naff though.

The rx8 isn\'t a rare car and this will happen with dead cars.

Shaun