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Mats
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Post by Mats »

Jim, Sounds great, we got a very odd winder up here as the temp seem to not wanting to drop below 7 degrees. Weird but good, I need to move a shell 250Km during the christmas holiday and snow would be bad.
I'll book some tickets just after I finish carving this cross out of the piece of garlic. :?

Brian: What kind of power did you see when you maxed out the 720cc units?

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Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
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4SFED4
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Post by 4SFED4 »

Mats,

I didn't, I had to lean it out a bit with the bigger injectors because it was too rich. Like I said earlier... old injectors but new exhaust header yielded 234whp @ 10psi or 283whp @ 15 psi. I have not dyno'd the car with the new injectors and remapped VE table. You can feel more power but just how much I cannot be sure.

-Brian
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Barry
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Post by Barry »

:D Matts,I replied to your e-mail.Will send it again right now.If you dont get it let me know and I will dispatch a pigeon.

Brian,is the pic of Jim`s new engine??Sometimes I wonder why I play with the big engines.The little engine produces so much for your money.Please keep us up to date re: Jim`s`engine.

You maxed out 720cc injectors??I have never pushed it this far!!Good stuff!Are your pistons super secret or can we share in the specs??

Barry
French cars are shit and shit expensive to service and bloody awful and unreliable and expensive and friends don't let friends drive french cars and you wait years for parts.
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Post by 4SFED4 »

Barry,

Yes, that is the "new" Bonneville engine. They fried the clutch when dyno testing it (without time to for repair) so they were unable to run it this year. They did run the car in another class with a n/a TS motor and set a new record in that class. Their goal though is to have the outright fastest Alfa ever by topping the current record holder which is a 164 ProCar.

I must have mis-typed something... the 720cc/min injectors have not seen over 85% duty cycle... the 503cc/min injectors did!

Duty cycle of 100% or greater means to me the injector is on all-the-time. Should a failure or hiccup occur that would not be good. Jim was using the 720's in the first Bonneville motor (Nord) so that is what I went with. Depending on BSFC... I could use between a 613cc/min up to a 720cc/min. I err'd on the side of safety... plus I got room for nitrous! (just kidding!)

-Brian
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Post by Barry »

Brian,Not that much experience on the BB turbo`s.We have just fitted a Turbonetics BB to an Integrale evo and the spool up is amazing.The turbo`s` just cost a fortune here in S.A.If I had the cash to blow, I would definately go for them on my personal engines.The rb26 that was fitted to the 200sx Nissan got an HKS BBturbo and this thing is absolutely awsome!!(This is from a discussion on gtv6.org)

From my very limited experience with BB turbo`s,so far I like very much.

Matts,do I send the pigeon?sent you a mail.

Barry
French cars are shit and shit expensive to service and bloody awful and unreliable and expensive and friends don't let friends drive french cars and you wait years for parts.
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Post by 4SFED4 »

Barry,

The pistons are from Mahle; forged 7.8:1 ceramic coated. No secret.

-Brian
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Mats
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Post by Mats »

Barry, just sent you a mail from this site with my adress, maybe you are sending it to the wrong person... :)
I remember your address almost made me hit delete because it looked like a spam address, perhaps if you try not to write "porn", "university diplomas" or "+ 3 inches!!!" in the subject line it will arrive... :D

I also tried to send you a private message (I think), there is a link at the top of the forum page about messages, maybe you missed it?
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
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Post by Dennis »

As the others have stated it all depends on the rules. Minimum weight and if you are allowed to run newer engines in an older chassis.

Chassis
I've been told that the 116 coupe has a lower center of gravity then the 75 but the 75 is lighter when you strip it down. If your minimum weight by rules is above the min. weight of the coupe, I would use the coupe. BUT when you look at the availability of lightweight body panels here in europe I would choose the 75. That might be different in Australia, however.
Lexan side and rear windows and a fully stripped chassis would be the first things to start with. A fully welded roll cage with extensions to the front shocks would be second. You might want to think about seamwelding the body when you have it stripped down for the fitment of the roll cage.

Engine
I would think there's more power to be made with the TS engine, but Jim is more qualified to comment on that :wink:

Suspension
I would go for the RS racing suspension for starters. Yes, it's a shitload of money at 1295 euros ex taxes, but it's by far the best suspension if you don't want a full custom set specifically made for your car and driving style. I have it on the car and it's absolutely amazing!

P.S. Barry, reply to my mail also!!![/b]
'81 GTV6 3.0 QV
'91 75 TS (track)
'02 BMW 330i Touring
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Post by 81GTV6 »

My race car! :D
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Jacob Ricciotti

'81 GTV6 3.0
'81 GTV6 Track car
'91 164S daily driver
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AutoDelta's Best Efforts;

Post by junglejustice »

FYI
2003 Best efforts from AutoDelta's NA 2000... 260 horses...

Alfa 156 GTA Super 2000 TECHNICAL DETAILS:

ENGINE Front, transverse, 4 cylinders in line
CAPACITY 1998 cc
POWER 260 bhp at 8500 rpm
IGNITION Electronic system, integral with injection
MANIFOLD Single throttle, diam. 64 mm
CLUTCH Sintered twin plate, diam. 184 mm
GEARBOX Sequential, 6 speed + reverse
DIFFERENTIAL N.Technology, self-locking, segmented
BRAKES Front: Brembo calipers with 4 cylinders, disks diam. 295 mm
Rear: Brembo calipers with 2 cylinders, disks diam. 278 mm
Brakeforce distributor adjustable at pedals
Rear brakeforce distributor adjustable by driver
STEERING Power assisted, rack and pinion with electric pump
SUSPENSION Front: double wishbone
Rear: MacPherson layout
RIMS OZ in aluminium alloy
9 x 17
ERODYNAMICS Front splitter 80 mm from the ground
Adjustable rear spoiler
WEIGHT 1140 kg (with driver)
...to Alfa, or not to Alfa? That is the question...
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Barry
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Post by Barry »

:D Mats,Have not recieved your mail-dispatched the pigeon,was heard bitchin` about overtime or something ......

Ok,This is where I have to apologise to all who have sent me mails and I have not got back to them..Sorry guys.

Den,please refresh the mail you sent,Im waiting for it.sorry dude.

Brian,have you thought of running a higher comp ratio?I must say that my old engine was excellent in the non boosted mode with 7.8:1 cr. (on carbs)

Barry
French cars are shit and shit expensive to service and bloody awful and unreliable and expensive and friends don't let friends drive french cars and you wait years for parts.
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Post by 4SFED4 »

Barry,

No, I haven't. A static compression ratio of 7.8:1 yields and effective static compression ratio of 11.3:1 @ 15psi. Here in States the best pump gas available is 94 octane from Sunoco (RON+MON/2). Unleaded fuels of 100 ocatane and higher are available but not as easy as going to the corner filling station.

Were I going to fill up with 100+ octane I would just turn up the boost 5 psi to 20 psi and have a lot more power than raising static compression by one or two points. (@ 20psi I would estimate rwhp to be around ~340.)

It is all a compromise. The goal is to optimize power and reliability. I know the magazines sport a lot of dyno queens showing huge rwhp numbes and I also know they don't last to long and are not very streetable. (And they are not using vintage motors!)

-Brian
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Post by Seb »

My race car ain´t a GTV6, its a 75 3.0, but I hope it´ll quallify anyways. It´s still being uppgraded, has only run one season yet.

Low, stiff and fast was the motto, and it is! Will uppdate with more pictures if there is any intrest.

/Seb
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Proud member of Team Rauk Race.

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GTV6 3.0QV-83
75 3.0 Race Car "The raukster"
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MD
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Your Race Car Design

Post by MD »

First and foremost, I want to sincerely thank all the contributors in this thread for helping me increase my knowledge of preparing a potentially competitive 2 litre naturally aspirated race car.

Now if I could just get my hands on the engine from one of these suckers... CHECK OUT THE NEDIES MAN !!!

156 Super Turismo..

General specifications
Country of origin Italy
Years of production 1998 - 2002
Numbers built N/A
Body design N/A
Weight 975 kilo / 2149.5 lbs
Drivetrain
Engine Straight 4
Engine Location Front , transversely mounted
Displacement 1.998 liter / 121.9 cu in
Valvetrain 4 valves / cylinder, DOHC
Fuel feed Weber Marelli Mr3 Fuel injection
Aspiration Naturally Aspirated
Gearbox Xtrac 6 speed Sequential
Drive Front wheel drive
Performance figures
Power 310 bhp / 231 KW @ 8250 rpm
Torque N/A
BHP/Liter 155 bhp / liter
Power to weight ratio 0.32 bhp / kg

..all from a naturally aspirated 2 litre Donk !! Sheeeiit!!
Stuff it I want 2 for a bi motore !!

How do the bastards do it ???

MD
Transaxle Alfas Haul More Arse
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Mats
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Post by Mats »

They remake the engine from scratch. Pretty useless if you don't have a HUGE supply of spares.
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
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