S8 Motor (4.2L V8) Into B5?

[Siena]

As the title states. I finally made a decision, and sold my 2.7 V6 Biturbo.

Buyer came down last night with a box van, and took it away.

I've just purchased a complete S8 engine, from a 1999 Audi S8. Being delivered sometime next week, along with the airbox, MAF, instrument cluster, ECU / wiring harness. Only part missing is the viscous fan, but that's ok, as I'm running 2 electric units at the front (grille side) of the radiator. So, 340PS stock, loads of grunt, and of course, the V8 rumble.

Now, a lot of folk say it won't fit a B5, but I'll get it in. The more folk say it won't (guys that haven't tried) the more determined I am to prove it will. I never go by hearsay.

I have great confidence in my mechanical / electrical abilities, and not the sort to just give up. I'm initially going to fit the motor as it is, but will be going the forced induction route later. Either turbo/s or supercharger, will need to review space, first once installed.

Ordered a flywheel from Audi today - the V8-engined cars were never available in the UK with manual transmission. I'll of course, be installing it with my 01E 6 speed tranny, coded DSY.

Over the next few weeks, I'll be posting regular updates. Can't wait to get rid of the lame 2.6L V6 12V.

[317ssayzarc]

i wish you the best of luck, i REALLY do... but add me to the list that says it wont happen... hopefully that motivates you and you get it done because i want ME to be wrong

[pac1085]

i think he might actually be able to pull it off. i remember someone on here posted a pic of the v8 sitting in the b5 chassis and it looked to fit quite well. there will be a lot of custom work involved but I think it's doable

[1 sick s4]

ballin' good luck dude.

[Outkasted]

I remember one company putting it into an avant. and it was costly. I am trying to remember what company it was. It was an audi tuner i think in europe.

[UN-PIMP-Z-A4]

bah humbug
it will never happen!!!
Post pics whenyour done. Thanx

[SilverB5A4]

This would be my dream for the B5 chassis, and yes anything can be done with enough money and dedication, it just depends on how much of each you have :)

[aytheory]

twin turbo v8 FTW

[audiFUEGO]

cant wait to see... or should i say.... i cant wait to be jealous of you.

Make sure you take lots of pics and keep us updated along the way!

I have a feeling that wacky orange widebody is going to become the sickest B5 anyone's ever seen.

[AudiA4turrrbo]

i've seen one put into an early 90's coupe quattro, it was tight, and it had twin k03's!

[UN-PIMP-Z-A4]

How much understeer do you anticipate?
LOL!!!

[Siena]

I only need me to motivate me. And the cost of the engine and parts is more than enough to gee me up.

I had the same reactions back in '96, I was one of the first to install an RS2 motor and 6 speed box into my '87 type 85 Coupe quattro. Was very successful, and ran great times.

Then, www.dubmeister.co.uk and his type 85 90 quattro. That runs a 4.2L V8 from a 1993 Audi V8, installed by my fair hands. People doubted it would fit even back then, in 1999 / 2000.

I just laughed, and got on with it. Was a successful install, contact Paul Quince, the owner of Dubmeister. I can still see the expression on his face, as I began to tear his car apart, priceless.

[Siena]

How much understeer do you anticipate?
LOL!!!

Yes, the V8 sits closer to the front of the car by about half a cylinder.

It's also lighter than the cast iron V6, and only marginally heavier than the 1.8T I4.

[Siena]

I remember one company putting it into an avant. and it was costly. I am trying to remember what company it was. It was an audi tuner i think in europe.

Correct. It was Oettinger in Germany.

The recipient car was a 1998 Audi S4 Avant in black.

[317ssayzarc]

Yes, the V8 sits closer to the front of the car by about half a cylinder.

It's also lighter than the cast iron V6, and only marginally heavier than the 1.8T I4.

thats precisely why i really want to be wrong on this... im running out of revs/displacement on my setup and this is the direction i want to go in...

[Flash]

The 12v is a cast iron block? I didn't know that. Is the 30v iron too? So if you get this going, which I'm sure a determined person can, and you boost it are you just going to run stock internals with low boost or would you rebuilt it and put it back in again?

Sounds like an incredible amount of work.

[fred2ka4]

This sounds like an amazing project and I can't wait to see the finished product. You don't need me to say that it can't be done to motivate you, as you already sound motivated enough to pull it off.

[Siena]

The 12v is a cast iron block? I didn't know that. Is the 30v iron too? So if you get this going, which I'm sure a determined person can, and you boost it are you just going to run stock internals with low boost or would you rebuilt it and put it back in again?

Sounds like an incredible amount of work.

All the V6 blocks, 12 / 30V are cast iron. I believe the exceptions are the 3.0 / 3.2 V6.

Am lowering the CR, considering RS6 pistons, or other aftermarket items, dependent on what's available.

[onemoremile]

I've got a 9.2MB zip of a V8 block sitting in a B5 A4. PM me with your email address if you would like me to forward them to you. I'll upload a couple to post. These are from a guy that posted here about the swap.

Alright, got 10 images uploading right now.

[B5Jaeger]

It has been done before multiple times.

I'm sure you can pull it off.

You may have to punch the forward firewall back a bit on the lower (passenger side on UK cars) portion.

Otherwise you'd have to stretch the nose/frame out.

Thread bookmarked, will follow with interest. The motor is all-aluminum and should not weigh substantially more than any of the sixes. PES is coming out with a blower for it, which should get you to around 450hp with instant response and plenty of low end.

[onemoremile]

[maxspeed]

its been done

[onemoremile]

its been done

All the more reason to do it again and a little better.

[legionvr6]

good luck i REALY wana see this. please take an insaine amount of pix.

oh and to get you going some more. it wont fit you'll fail. lol good luck dude

[DGAFxxx]

I'll give $100 to the first person to swap a F20C1 honda engine into a b5, and I'll give them an extra $100 if they add forced induction to that.

[onemoremile]

Why not a 20b three rotor or LS7 with titanium rods and dry sump?

[Siena]

Thanks for the pictures!

That's a later V8, with chain driven camshafts at the rear.

Looks nice and snug in there.

[ibe3pac]

i fucking love and how this forum never makes me happier!! lol... good luck bro.. i hope to see tons of progress by june when i get out of boot!! ill be looking forward to seeing this post when i get back... and ill have one of my buddys keep me updated... GOOD lUCK... and idea... maybe see if you can shorten the rear drive shaft an inch??? so the motor can sit back farther... im assuming your making your own motor mounts too so just an idea... keep on ... and good luck... bc this will be an awesome fucking car and do you already have a shell?? or what year b5? maybe 1996 or 1995 bc of price?... just a couple ideas and food for thought!!

[onemoremile]

Thanks for the pictures!

That's a later V8, with chain driven camshafts at the rear.

Looks nice and snug in there.

Yeah it looks like the B6 S4 V8 which is a little shorter than the one from the S8.

[blacka4]

what about the belt accessories???

[onemoremile]

Go oldschool and run the alternator off the driveshaft and everything else off an electric motor.

[B5Jaeger]

Plenty of room for a blower in thar.

[Nebone]

Here is a same type of thread by a guy with a B6 1.8T doing the V8 swap.

http://www.audizine.com/forum/showth...ht=engine+swap

[Militant-Grunt]

Well you're going to have fun cutting up the firewall, because thats the only way that V8 is fitting in there properly without compromising the nose of the car. Same was discussed when someone proposed fitting a AAN 5cyl 2.2.

[Tiluleshpingen]

it can be done just going to be nose heavy

[317ssayzarc]

it can be done just going to be nose heavy

can you read?

[Tiluleshpingen]

can you read?

yeah our cars are nose heave with the 1.8t . yeah the v8 its lighter then most 6cyl but is not like its almsot the same as the 1.8t.nice face by the way

[onemoremile]

An all aluminum V8 is pretty close to an iron block 4 cylinder when you add in the turbo, intercooler, and all the associated piping. It might even be lighter when finished.

[317ssayzarc]

yeah our cars are nose heave with the 1.8t . yeah the v8 its lighter then most 6cyl but is not like its almsot the same as the 1.8t.nice face by the way

you like it? [O_O]

haha

[317ssayzarc]

An all aluminum V8 is pretty close to an iron block 4 cylinder when you add in the turbo, intercooler, and all the associated piping. It might even be lighter when finished.

THAT was what i meant... sorry it was implied and not written, my mistake