john-t5
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| posted on 21/8/15 at 02:23 AM |
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Rx8 20v VAG
Don't know if this is the correct section, or if you guys would be intrested.
Was looking at building a locost for a while, then realised how cheap a RX8 with a dead engine has become. This got me thinking (never a good thing).
After a bit of deliberation & measuring of engines, I decided to try & stick a 1.8 20v turbo in one.
I've decided that I'm going to do an engine swap in my track car project. More out of curiosity than anything else.
I've seen a few projects done, but with no real world feedback.
Here's some of the things I'll try show.
•REAL & FULL cost of conversion.
•Time actually spent working on car.
•How car compares once finished (if finished) have my other RX8 to compare it with.
•Cost of any engine modifications. (Again if finished)
I'll keep editing this first post with costs & times.
COSTS.
•RX8 £200
•Transporting RX8 £90
• Audi engine, loom, ecu & gearbox(will be sold on) £200
TIME.
•Removing engine & box from Audi 1:15 (was just over an hour, will round things up to the nearest 15 mins)
• Remove engine from RX8 2.30 (lots of swearing evolved [-X )
• Sit block in place & take some measurements, experiment with what clutch could work. (Time including picking up parts 2.30
TOTAL TIME SO FAR. = 6.15
If you can think of anything else, just post up & I'll add it on.
I have no time limit on this, but will do my best not to let it drag on forever. Finishing off a xr2 turbo track car for a friend over the next week
then this is top of the list. :wink:
Engine I will be using is the VAG 1.8 20v turbo, not my first choice of engine. But had to make a few compromises. Cheap & plenty available.
Massive market for tuning & one of the main reasons was, easy to use standard ecu.
This is the RX8 I bought with low compression for £200
Got the car dropped off to remove the engine from.
I'll do my best to answer any questions as I go. :wink:
Cheers John
[Edited on 21/8/15 by john-t5]
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john-t5
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| posted on 21/8/15 at 02:33 AM |
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Finally got the xr2 I was restoring & convering to a turbo finished & MOT'd last month.
So after taking a few weeks off the REX has finally made it into the garage. :mrgreen:
Cheers John
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john-t5
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| posted on 21/8/15 at 03:16 AM |
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Removed the engine. Lots of seized & snapped bolts, as the car has been lying by the sea in Wick for 2 years before I bought her. #-o
Now the hard work starts. Collect a loan of a mockup block later this week.
Cheers John
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john-t5
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| posted on 21/8/15 at 03:18 AM |
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Well picked up a lone of a scrap block for mock up, so stuck it in to take a few measurements.
Also got donated a few old flywheels & clutches to have a play with. Have found a mix that might work. 1.9 tdi a4 solid flywheel (if I can find
one at a reasonable price) with a 4x4 Sierra Cosworth friction plate & Audi pressure plate. Fly would need a lip machined on it to take the rx8
starter ring gear. Or get a custom fly made to take rx8 clutch. Once adapter plate arrives I can take final measurements & make a decision.
So most of my time has been spent like this. :roll:
Another 2 1/2 hours spent. Including picking up parts donated.
Cheers John
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john-t5
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| posted on 21/8/15 at 03:20 AM |
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Posts copied from another forum, just to bring things upto how it stands at the moment. Any feedback, criticism or advice is welcomed.
Cheers John
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threadbare wallet
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| posted on 21/8/15 at 05:24 AM |
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Very interesting,shame to not have to proper engine in there,but will watch ya progress.
Very few things are "really" needed.
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maccmike
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| posted on 21/8/15 at 06:16 AM |
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Great stuff.
Insurance will be expensive due to the official cc increase.
Love the Fords, xr2 looks good in green but sorry the sierra would look million $$$$ better in grey, black or white.
I look forward to reading more.
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Slimy38
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| posted on 21/8/15 at 07:43 AM |
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I'lll be keeping an eye on this, I've often wonder whether there is a viable option to convert the 1.8 VAG engine to RWD. As you say there
are huge tuning options, even the variations in factory engines give a variety of powers (150 to >200 if memory serves, and that's without
aftermarket parts).
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tegwin
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| posted on 21/8/15 at 08:13 AM |
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As you say atrong engines. The highest spec was the BAM engine which had 225hp in the standard tt and seat Leon chorus R. There was a special version
in the tt sport with 250hp.
I had a 225 cupra r remapped to 290hp with no mods other than a stronger waste gate.
Nice project 
[Edited on 21/8/15 by tegwin]
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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dubzter
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| posted on 21/8/15 at 11:00 AM |
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If there was a rear drive conversion for the VAG group engines I'd defo be considering that. I've had VWs since I was 21 just recently got
and Audi daily. My Mk4 R32 (supercharged) is my other toy. The 1.8t has bags of potential and loads of them about, what sort of size is it though?
Thoughts around fitting one in a 7 trype car. I guess you need an adapter plate or custom bellhousing to mate it to a type 9 or something like that.
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big_wasa
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| posted on 21/8/15 at 01:06 PM |
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Keep up the progress and lots of photos please.
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PAUL FISHER
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| posted on 21/8/15 at 03:10 PM |
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Great project, watching with interest
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nero1701
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| posted on 21/8/15 at 05:46 PM |
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Donkervoort use many Audi engines in rwd format
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Slimy38
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| posted on 21/8/15 at 08:14 PM |
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quote:
Originally posted by nero1701
Donkervoort use many Audi engines in rwd format
And they don't give any information away... 
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john-t5
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| posted on 21/8/15 at 09:47 PM |
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Cheers for the intrest guys. I'll do my best to keep this as updated with info, cost & times as possible. Not much will get done this
weekend touring cars up here. 
Cheers John
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coozer
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| posted on 22/8/15 at 06:54 PM |
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quote:
Originally posted by dubzter
If there was a rear drive conversion for the VAG group engines I'd defo be considering that. I've had VWs since I was 21 just recently got
and Audi daily. My Mk4 R32 (supercharged) is my other toy. The 1.8t has bags of potential and loads of them about, what sort of size is it though?
Thoughts around fitting one in a 7 trype car. I guess you need an adapter plate or custom bellhousing to mate it to a type 9 or something like that.
There is an off the shelf adapter plate available to turn the vagengine round to mate up with the Mazda gearbox.
There was a write up about it in PPC not long ago.
1972 V8 Jago
1980 Z750
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john-t5
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| posted on 22/8/15 at 08:00 PM |
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Not found anyone doing one for the VAG engine to Mazda yet. Rayland used to sell them. Do you have a link.
Cheers John
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Badger_McLetcher
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| posted on 22/8/15 at 09:47 PM |
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Sweet project, I shall watch with interest!
If disfunction is a function, then I must be some kind of genius.
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coozer
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| posted on 23/8/15 at 08:59 AM |
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Quote from April PPC... Martin Harland at Reyland Motorsport is well underway with a conversion kit...
It goes on to describe the simple bolt up option with the gearbox adaptor plate. There's pictures of the vag engine in the rx8 engine bay.
It also shows one with a Honda engine in and one with a supra engine and one with a Chevy LS V8 yum yum...
LS1RX8.com
pakwheels.com
1972 V8 Jago
1980 Z750
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john-t5
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| posted on 23/8/15 at 08:13 PM |
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Martin never finished his & has removed all details from his website.
Cheers John
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john-t5
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| posted on 27/8/15 at 11:30 PM |
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quote:
Originally posted by maccmike
Great stuff.
Insurance will be expensive due to the official cc increase.
Love the Fords, xr2 looks good in green but sorry the sierra would look million $$$$ better in grey, black or white.
I look forward to reading more.
Insurance doesn't bother me, as it's getting build as a track toy. But technically it's a cc decrease according to the dvla from a
2.6 to s 1.8.
Cheers John
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john-t5
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| posted on 27/8/15 at 11:37 PM |
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Time to get a bit high tech and brake out the CAD (cardboard adided design) to get a wooden mock up adapter plate made up. Let's hope it works.
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[Edited on 27/8/15 by john-t5]
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john-t5
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| posted on 28/8/15 at 08:13 AM |
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Offered wooden mock up plate up to the vw engine, fits great. Can't beleave it
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john-t5
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| posted on 30/8/15 at 09:36 PM |
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Adapter plate looks like it will work, will need to make the real one now. Can cut bulkhead & make engine mounts while I wait.
Cheers John
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olberj
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| posted on 31/8/15 at 08:56 PM |
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Nice project!
Were you at our last TT meet at Eurocentral? Can't imagine there's many green Cossies.
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