425 BHP Alfa Romeo 156

Originally Posted by strat24v

Remember this is a road car engine, not a short stroke/high revving unit like the bike derived v8's. All credit to the Glenwood boys

Actually, if they keep the original V6 crankshaft the 3.8 liters must come from boring the engine block and fitting thinner liners. Therefore the stroke is the same (*) and the bore is wider, so the engine becomes seriously oversquare and revvy.

(*) I believe it is possible to increase the stroke keeping the same crankshaft if you fit different (eccentric?) crank pin journals.

Originally Posted by alfasud.ti

(*) I believe it is possible to increase the stroke keeping the same crankshaft if you fit different (eccentric?) crank pin journals.

Thats how Alfa got the 3.2 out of the 3ltr.... i think you have to use a 3.2 crank to get 3.8 because you cannot take the bores out big enough... again, so ive been lead to believe

Originally Posted by alfaspence

AFGAS? 102 Ron? what class does this run in then
440 on that fuel, and that dissplacement is poor then

It runs in the street racing class
You can ask the AHM boys and Jano at Autodelta what they think of 440BHP from a 3.8 NA car. Ask them if they can squeeze out any more from a 3.8 NA. Certainly if you go the turbo/supercharge route, you can get a lot more.

Originally Posted by Rush

It runs in the street racing class

hey! thats not fair! we are not aloud to do that here

Originally Posted by Rush

You can ask the AHM boys and Jano at Autodelta what they think of 440BHP from a 3.8 NA car. Ask them if they can squeeze out any more from a 3.8 NA.

probably not! but then if i had huge amounts of money, they would be the last people i would approach for an engine! You do not get alot for your wedge from those guys!
Oh, and that GO-TECH your running (Pro x) as in the same iam using? Speak to AHM and let him tell you how crap its supposed to be probably because it didn't cost thousands there for he isn't interested

Originally Posted by Rush

Certainly if you go the turbo/supercharge route, you can get a lot more.

somewhere between 900 and 1000 bhp i heard

Originally Posted by alfaspence

hey! thats not fair! we are not aloud to do that here

Oh, and that GO-TECH your running (Pro x) as in the same iam using? Speak to AHM and let him tell you how crap its supposed to be probably because it didn't cost thousands there for he isn't interested

Street racing is illegal and in S.A it's no exception. You just choose a quiet stretch of road late at night
You're right, the 156 is running the Gotech Pro X (apparently it's the latest version). The S.A 147 race cars (Production cars) used it as well. I spoke to the guys that did the tuning/mapping on our 156.....they reckon that it's got some very good features and makes tuning easy. It's very much a value for money ECU......it cost in the region of R7500.00 or 600 euro

Originally Posted by Rush

Street racing is illegal and in S.A it's no exception. You just choose a quiet stretch of road late at night
You're right, the 156 is running the Gotech Pro X (apparently it's the latest version). The S.A 147 race cars (Production cars) used it as well. I spoke to the guys that did the tuning/mapping on our 156.....they reckon that it's got some very good features and makes tuning easy. It's very much a value for money ECU......it cost in the region of R7500.00 or 600 euro

See! those who use, and have GO-TECH fitted to their vehicles, are happy with it and have GOOD things to say
By the looks of it, your running the same wiring config as i am (6 seperate coil packs instead of one)
Iam glad you say its easy to tune as i have NO experience with tuning engine management systems, and iam yet to bring mine online

Perhaps i ought to have a word with Dawie and see what goodies he can sell me....
Specially as JJ has quit forums

Some impressive work on that V6. But all that power through the front wheels? How does it handle? The V6 engined fwd Alfa's have never been very quick in the approach to corners. I'm interested to know if the set up has been changed and what has been done?

Originally Posted by alfaspence

By the looks of it, your running the same wiring config as i am (6 seperate coil packs instead of one)

Standard on all 24v V6's.

pah its only 115bhp/litre... my mg makes 126bhp/litre...

just messing with you, cracking build and i bet it is absolutely stunning to drive! any NA car that can break 100hp/l is a very well designed machine and deserves respect! It must be insanely loud with no filters on the TB cones tho!!

Originally Posted by v6junky

Standard on all 24v V6's.

Once you ditch the Bosch motronic its NOT there are many configuarations possible! Most opt for one simple coil pack ala 155!!
Read, these are non standard cars running aftermarket ECU's

Originally Posted by marko

pah its only 115bhp/litre... my mg makes 126bhp/litre...

just messing with you, cracking build and i bet it is absolutely stunning to drive! any NA car that can break 100hp/l is a very well designed machine and deserves respect! It must be insanely loud with no filters on the TB cones tho!!

NOS is cheating

Originally Posted by v6junky

Some impressive work on that V6. But all that power through the front wheels? How does it handle? The V6 engined fwd Alfa's have never been very quick in the approach to corners. I'm interested to know if the set up has been changed and what has been done?

I agree, 425BHP through the front wheels is a lot. To assist with traction, Dawie fitted a race Gemini LSD with a 50:50 split. This is the same LSD that was fitted to the race 147's which competed in the S.A Production Cars. A set of Bridgestone Potenza RE55S (semi slicks) were fitted to help assist with the traction. The OMP strutbrace does it's bit as well.
I've mentioned previously that the 156 is mainly used for street racing.
Although it is fitted with Eibach springs and Koni Sport shocks, the handling is fairly good, but that wasn't the main purpose it was built for.

Originally Posted by Pud237

NOS is cheating

but its so much fun