My Motorkhana Car: Alfa 75 V6

[R33_Dude]

Well after seeing Smitty42's Alfa on here I thought I would post up my ongoing project car.

Mary Jane

1985 Alfa Romeo 75

2.5 V6

The car is to be a registered track car delegated to motorkhana events and club track days. Car came with a short ratio gearbox from a twinspark and LSD.

The plan:

Well for now its registration. Then comes extractors, suspension work (koni shocks and new springs probably), updated to slotted rotors, rebuilt SZ calipers that I obtained, and of course the mandatory weight reduction. I think I will run at khana days like that for a while until the engine lets go. Then its out with that and in with either a SR20DET or a quad cam alfa V6 running ITB's.

Personally I like the second option.

When bought her:

Progress so far:

Honestly not much. I have removed all the soft sound deadening and started chipping away at the hard stuff. Dry ice didn't do anything to it. Heat gun and chisel seems to be the way.

Brakes have been overhauled, fatter adjustable rear sway bar has been fitted, replaced a heap of bushes, and general maintenence including a full 100,000 kilometer service. Which was quite the adventure let me tell you.

Updates will be slow, new tyres tomorrow then off to be registered. Getting a stainless side pipe exhaust setup made for me at what is essentially cost price without labor for a) weight reduction and b) because the stock system is restrictive. Need to let out the alfa note!

[N1GTR]

Thread approved

[Smity42]

Alfa love. At least yours is already red.

Car came with a short ratio gearbox from a twinspark and LSD.

Lucky you! I have to find me one of them...

or a quad cam alfa V6 running ITB's.

Honestly not much. I have removed all the soft sound deadening and started chipping away at the hard stuff. Dry ice didn't do anything to it. Heat gun and chisel seems to be the way.

Yeah definitely get the heat gun onto it. Heat it up and then it will peel of with a paint scraper.

[R33_Dude]

Lucky you! I have to find me one of them...

Pity your not in tassie I know of at least another three didion rear ends just sitting around. One in a wrecked twinspark and the other in a wrecked 3.0Q.

In other news minilites have been ordered along with Potenza Re55's - gotta love trade prices.

Also picking up the street tyres tomorrow hopefully, just crappers with tread to get me to and from events.

As well as that I replaced the rear swaybar mounts (one was snapped and the other one looked half torqued to death), took off the badging bar the Alfa 75 bit. Put the stock original 75 windshields up for sale on ebay and did a bit more stripping. Found one patch of rust that I didn't know about in the spare tyre well underneath some deadener. Will probably cut the well out and replace with pressed sheet metal after its registered.

Can't do much more between now and rego. Engine getting a quick tune tomorrow, will try and upload a video.

EDIT: have already decided I will be going with a Porsche for the next track project, probably an early 911S around 1977ish.

Edited May 18, 2010 by R33_Dude

[N1GTR]

EDIT: have already decided I will be going with a Porsche for the next track project, probably an early 911S around 1977ish.

Awesome choice! Let's see a thread on that when you start it

[R33_Dude]

Yeah I went to a track day in my uncles 911 GT3 RS and it converted me.

No abs. No traction control. Interior consisted of me, wheel, seat and guages.

Hard as hell to drive (I kind of spun out a bit - my uncle nearly shat himself...) but he thinks that there is nothing better to learn to drive fast in, because if you can drive a 911 fast you can drive anything.

Upsides are pretty good too, you have a quite high initial purchase price but its comparable to a good R32 GTR. Plus sides are air cooled, easy to get parts (US of A), heaps of tuning potential, handle well and the list goes on and on. Can even pick up a turbo model if I had a death wish.

Back on to the alfa though this car is designed to teach me basic skills, then will be sold after a year or so and replaced with the Porsche for track work.

Won't be as quick as any gtr but the point is skill development more than anything.

Edited May 18, 2010 by R33_Dude

[R33_Dude]

Okay many changes coming this way shortly. Have committed to a particular engine build and very much intend to see it through, this means I give up on another R33 or the 911until this build is finished.

Heres a sample pic of the (not mine) finished product:

Parts List:

- Reconditioned 2.5 Alfa V6 heads, new valves, springs, retainers.

- 164S Cams.

- Balanced crank

- THS Forged Conrods.

- Venolia 8.5:1 Forged Pistons.

- Greg Gordon Eaton MP62 Supercharger Kit.

- FMIC behind grill painted black.

- Replaced water pump.

- replaced oil pump.

- Cleaned inside/out, acid dipped, high temp coated stock headers.

- 440cc Injectors (not sure which brand, still deciding on the ECU).

- New engine mounts and rubbers.

- Twin side pipes.

- Top gun leads.

- New Dissy.

- Bosch sport coil.

- ECU unknown, still making a choice - probably go with Wolf V500.

- Still sorting fuel system, trying to keep it in tank with a modified stock fuel tank

Possible power output unknown, aiming for 300 HP but the real goal is the sound of a supercharged 2.5 litre Italian V6 on side pipes .

Edited June 9, 2010 by R33_Dude

[R33_Dude]

Car is registered as of today.

Amazingly I was faulted on only three things at inspection, all of which took me twenty minutes to correct:

- Heater does not blow air at window

- One number plate globe

- One intermittently faulty reverse light

I have to say I could have failed on so many other things (not essential things)... But I take wins where I can get them

Also added to the "need to buy" list are high temp silicon coolant hoses from Greg Gordon...

Bilsteins on order are taking a while. Can't find a spring that I like either - while it may not look it Alfa 75's sit quite close to the ground already and any drop in height means that ripple strips become problematic let alone speed bumps.

Also picking up two parts cars tomorrow for mock up purposes and general testing.

On and on it goes.