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Author: Subject: Audi engine in Midtec spyder
Trev Borg

posted on 12/10/15 at 10:01 PM Reply With Quote
Audi engine in Midtec spyder

After This weeks track day, it has me thinking more about my spare Midtec that is currently sat in a barn.

It has never been finished, but did have the renault V6 and un1 transaxlw fitted.

Before I bopught the car (cery cheaply I might ass), it had been sat outside fora fair length of time, so carbs were full of water.

Anyway, back to topic, My mate Mr Owelly, wants me to put an Audi engine and transaxle in this car, and I can't find a could reason not too.

So, what engine?

And which cars do they come in?

The obvious choice would be 1.8T from A4, A6, A8, but Mr O is thinking V6 or V8.

What do you think? Where is a good source? Passat?





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Ugg10

posted on 12/10/15 at 10:17 PM Reply With Quote
If you have the width - scooby flat four with the gearbox mod as per the wr3 v-storm by scooby bits.





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Mr C

posted on 12/10/15 at 10:25 PM Reply With Quote
I wouldn't,t bother with the flat four version, scooby bits are Cowboys and SDR who made the kit have gone under. Aside from that under bonnet temps and turbo pavcksging is an issue along with getting the gear change to work. Front wheel drive A4 or Passatt with 1.8t engine, cable gear change, tuneable and plenty of parts available at reasonable cost





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nick205

posted on 14/10/15 at 10:36 AM Reply With Quote
I remember some Audis and VWs had longitudinal engines with FWD transaxles in them - that would be my start point.






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gallons perminute

posted on 14/10/15 at 11:09 AM Reply With Quote
I have a 2l 4cyl Audi engine and box with driveshafts available. Perfect for a mid engine project. 100.
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coyoteboy

posted on 14/10/15 at 12:30 PM Reply With Quote
No idea if it will fit that chassis but I'm designing mine around the V8/01E combo. 300hp/300lbft. Should be fun but I suspect it's a bit long for your application. If you went with something with less torque you could potentially use the shorter, weaker boxes.





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Trev Borg

posted on 14/10/15 at 03:12 PM Reply With Quote
Pretty sure the 01E will be too long (looks a long old beast on google images)
Also looking at the v6 engines, they seem to be very wide. What angle of V are they?

Gallons, what engine do you have? is it the non turbo unit?

Going to go measure my engine bat now





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coyoteboy

posted on 14/10/15 at 04:56 PM Reply With Quote
There's a few versions of the 01E - the 2WD version is a little shorter but not much. The later spec A4 came with a shorter box again (01A?):
http://workshop-manuals.com/audi/a4_mk2/images/a4-15935.png

The V's are 90 degree, nice and wide and low which is great for CoM height but not great if you have a narrow chassis!

Check this out for a list of transmissions:
http://www.dieselschrauber.de/audi_zuord.html
And this for a bit of info on the 01E, but it's mainly aimed at V8 owners due to discussion of V8's munching 1st gear on one specific variant.:
http://www.elektro.com/~audi/01E/


[Edited on 14/10/15 by coyoteboy]





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obfripper

posted on 14/10/15 at 06:10 PM Reply With Quote
What about a brave move, and use a w8 passat engine and box?
It's not the most efficient lump for bhp/litre, but is compact for a 4l and you might be able to slip a couple turbos on for effectively half a Veyron.

Dave

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gallons perminute

posted on 14/10/15 at 06:38 PM Reply With Quote
Engine is non turbo 8v from an 80 Audi.
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Trev Borg

posted on 14/10/15 at 07:48 PM Reply With Quote
Thanks Gallons, am really looking for a bit more horse power.

W8? will have a look, I know nothing about them.

We have a look at the links posed thanks.

[Edited on 14/10/2015 by Trev Borg]





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Nickp

posted on 14/10/15 at 08:30 PM Reply With Quote
W8's ain't cheap mate, ask Frank!!
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Trev Borg

posted on 15/10/15 at 07:35 AM Reply With Quote
Looking at the chassis, I am now thinking the V6 may be too wide also. The black Spyuder I hace already has a V6 ion but it looks a lot narrower.





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gallons perminute

posted on 15/10/15 at 10:49 AM Reply With Quote
Big engines with big power need big transaxles. This results in a heavy power train. I would suggest that for your car it would make more sense to go with a turbo 4 pot.

Lets face it when Noble designed the chassis I doubt he rated it for 400+BHP

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coyoteboy

posted on 15/10/15 at 07:35 PM Reply With Quote
You could still get 400hp out of a turbo 4pot but it would be as heavy as the V8 (I looked at all the numbers!)





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Trev Borg

posted on 15/10/15 at 08:22 PM Reply With Quote
200 BHP would be nice.

I will not be ableto fit a v6 in my road car, but need to look at the track day car to see if the chassis is diferent. It already has the Renaul V6 in so may be slightly different.

I would like the V6, but its looking more like the 4 pot turbo.

If I go that route, which engine do I need to look for, there are so many.





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Ugg10

posted on 15/10/15 at 09:15 PM Reply With Quote
What about the vr6? not particularly light but 200hp well within reach.





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olberj

posted on 16/10/15 at 09:29 AM Reply With Quote
I've got an audi OB1 gearbox to use. You might be surprised what you can fit with this box as the driveshaft/diff line is right at the flywheel.
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MikeRJ

posted on 16/10/15 at 10:22 AM Reply With Quote
Inline 5 cylinder turbo for the authentic Quatro sound
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coyoteboy

posted on 16/10/15 at 11:57 AM Reply With Quote
quote:
Originally posted by olberj
I've got an audi OB1 gearbox to use. You might be surprised what you can fit with this box as the driveshaft/diff line is right at the flywheel.


I actually found this to be more problematic with my design - it extends so far behind the wheel centreline it's basically the only thing causing an overhang in my design!





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olberj

posted on 16/10/15 at 12:24 PM Reply With Quote
Aye, there is that. Helps if engine bay space is an issue, not overall length.

You got a build thread?

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coyoteboy

posted on 22/10/15 at 11:57 AM Reply With Quote
I had a build blog but my server went south and took it with it. I've not had chance to reinstate it yet. I'm also finding my CoM is so far backward even with an 01E that I need to push everything into the front axle area!





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Trev Borg

posted on 22/10/15 at 07:01 PM Reply With Quote
I think I will continue with my measuring, nit sure if the v6 chassis i have is any different from the one in my garage.

Would like to another V6 really





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Volvorsport

posted on 23/10/15 at 01:42 PM Reply With Quote
use the Renault 12v engine on a UN1 box . we put one in an Alpine replica , it easily achieved over 200 hp .





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olberj

posted on 23/10/15 at 02:06 PM Reply With Quote
quote:
Originally posted by coyoteboy
I had a build blog but my server went south and took it with it. I've not had chance to reinstate it yet. I'm also finding my CoM is so far backward even with an 01E that I need to push everything into the front axle area!


Interesting.

I've bought a 4.2 a8 and a 2.5d a4 this week to strip to bits and use in my bonito. There's loads of room back there so should be ok.

I hope!

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