1995 90 quattro V6 to 1.8t Conversion

[Ruffiano]

i have one you can have for free.99 plus shipping

Cool project Dave. You back state side again?

I've got a couple of manual crankshafts around. Gimme a shout if you need one.

Thanks both of you for your offers.

few seconds with a grinder and a bearing later and an auto block was fitted into my 90q think it might have been from a speeding-g60 thread i copied from even..

Exactly, I think the plan for the time being is just grind it and run it stock to get the swap sorted. I'll start watching for a new bottom end that will be upgraded and built up that will eventually be swapped over when its ready and when my budget is ready!

The goal is to have a nice sold 300+ awhp with similiar tq numbers. I want it to be a fun but somewhat practical car that can be driven on a regular basis. Not going for a monster here.

[sam80quattro]

few seconds with a grinder and a bearing later and an auto block was fitted into my 90q think it might have been from a speeding-g60 thread i copied from even..

[saltinot]

Cool project Dave. You back state side again?

I've got a couple of manual crankshafts around. Gimme a shout if you need one.

[speeding-g60]

yeah, and the brake pedal in this one too. and yeah Dave told me its an auto.

the difference in the crank is the snout for the FW/flexplate. the auto has no provision for a pilot bearing, needed to support the input shaft.

[UrS4boy]

ummm, why "find" a flywheel/clutch setup? is the B5 an auto? if so, you need to either machine the crank snout down or find a manual crank. i have one you can have for free.99 plus shipping, BUT the machine shop said it was a couple thou out of round? i was building race car motor so i just found other cranks. and if the B5 is manual, it has the clutch setup you need already.

Looks like its an autobox?? (I copied and pasted this photo and blew it up and the shifter looks autobox to me). Its midnight here so I will have to wait until the AM to find out the real answer. (I had no idea that the automatic transmission engines had a different crank than a manual transmission engine, seems strange):

[speeding-g60]

ummm, why "find" a flywheel/clutch setup? is the B5 an auto? if so, you need to either machine the crank snout down or find a manual crank. i have one you can have for free.99 plus shipping, BUT the machine shop said it was a couple thou out of round? i was building race car motor so i just found other cranks.

and if the B5 is manual, it has the clutch setup you need already.

[Ruffiano]

So I got an old friends 90, He was actually the friend who originally turned me on to older Audis, I mostly watched and slightly helped him put a V8 into a b3 80 which became Javad's V80 (that term was coined by my friend first). After that I got my own 90 and started tinkering, he moved on as well, and came back to buy this B4 90. By that time i was much more familiar with these car than even he was. I machined a set of URS4 hubs for him at Hank's old lab in Utah, gave him my rotors that were re-drilled to 5x112 and sourced him some KW coilovers when i sourced mine. Little did I know that in the future that car would be coming my way.

So we struck up a deal, and I had the car shipped out to Utah:

his picture


Pics as delievered:






The car had a bad thermostat and undocumented timing belt history. So i knew my first order of business.

Did the belt and some clean up:



Installed a euro front bumper:


Bought a cheap ($100) set of wheels and tires since the tires were completely dry rotted and bald on the Borbets:



And i've been driving it and sorting out other small issues. I always had intentions on doing an engine swap, and I was sort of waiting to see what came along. I would have loved to do an I5 20vt swap, but there is a bit of fabrication involved and donor cars don't pop up all that often. The other idea was an I4 20vt aka 1.8t. Which do pop up pretty often. I already had sourced some 1.8t engine brakets since they poped up cheap in europe:



and so I set out to watch the local classifieds for a cheap 1.8t donor. I wasn't expecting to buy anything soon, but this popped up this past weekend and it followed me home...





Very very clean under the hood, very clean inside as well, but with a bad trans. It set me back 500 bucks, but i already have a buyer for the interior and should have one for the wheel/tire combo that will already pay off that price tag.

I have also purchased a european b4 cabrio harness from a 1.8 (non -t) which should help with the wiring of this car, i assume i'll have to add in the N75 wiring, and the MAP sensor wiring, but the ecu plugs are the same as the 1.8t, and the chassis and fuse box connections are the same as the b4, so I'm hoping it will be a mostly plug and play ordeal, I like keeping things clean and simple.

So short term plans:
Part the A4.
prep the engine
find Flywheel and clutch setup
sort wiring
and swap it all over.


Long term:
Rebuild short block (rods, clean, new piston rings, bearings, ect)
Possible valve and valve spring swap
larger turbo, most likely GTX-3071R
T3 Style exhaust manifold
Injectors and tune.
6 speed swap



We'll see how it all plays out. This is a very "loose" plan and is always subject to change.

As the car sits today: